Preliminary Requirements

Safety Requirements

WARNING

IT IS THE RESPONSIBILITY OF THE OPERATOR TO OBTAIN AND OBSERVE THE MANUFACTURER'S MATERIAL SAFETY DATA SHEETS FOR CONSUMABLE MATERIALS INFORMATION SUCH AS, HAZARDOUS INGREDIENTS, PHYSICAL/CHEMICAL CHARACTERISTICS, FIRE, EXPLOSION, REACTIVITY, HEALTH HAZARD DATA, PRECAUTIONS FOR SAFE HANDLING, USE AND CONTROL MEASURES AND ALSO TO TAKE LOCAL REGULATIONS INTO CONSIDERATION.

THIS PROCEDURE INCLUDES THE USE OF SODIUM HYDROXIDE, SODIUM CYANIDE OR POTASSIUM CYANIDE. CYANIDE SALTS AND/OR SOLUTIONS ARE VERY POISONOUS AND WORK VERY QUICKLY. THEY GIVE OFF HYDROCYANIC GAS, WHICH CAN KILL WHEN MIXED WITH ACID. THE PRECAUTIONS THAT FOLLOW MUST ALWAYS BE OBEYED.

CYANIDE SALTS AND SOLUTIONS MUST ALWAYS BE KEPT AWAY FROM ACIDS.

SODIUM HYDROXIDE SOLUTIONS MUST ALWAYS BE KEPT AWAY FROM THE SKIN AND EYES, BECAUSE THEY CAN BURN.

WARNING

OPERATORS MUST ALWAYS USE THE APPROVED PROTECTIVE CLOTHING SUPPLIED.

WARNING

FINGERNAILS MUST BE KEPT SHORT AND MUST ALWAYS BE FULLY CLEANED BEFORE YOU EAT, DRINK, OR SMOKE.

WARNING

ITEMS THAT ARE USED TO EAT OR DRINK WITH MUST NOT BE KEPT AT LOCATIONS WHERE CYANIDE IS KEPT OR USED. ALSO, YOU MUST NOT EAT, DRINK, OR SMOKE AT SUCH LOCATIONS.

WARNING

CYANIDE MUST ALWAYS BE KEPT AT A SAFE LOCATION, WHERE ACCESS IS ONLY AVAILABLE TO APPROVED PERSONS.

WARNING

A SUPPLY OF CYANIDE ANTIDOTE MUST ALWAYS BE EASILY AVAILABLE.

WARNING

THE INSTRUCTIONS GIVEN BY THE SAFETY OFFICER MUST ALWAYS BE OBEYED.

WARNING

THE OPERATORS MUST ALWAYS WEAR THE PROTECTIVE CLOTHING SUPPLIED, WHICH INCLUDES RUBBER GLOVES AND EYE PROTECTION.

WARNING

IMMEDIATELY REMOVE SOLUTION IN THE EYES. SUFFICIENTLY FLUSH THE EYES WITH WATER TO REMOVE CONTAMINATION. GET MEDICAL AID IMMEDIATELY.

WARNING

A SUPPLY OF BUFFERED PHOSPHATE SOLUTION MUST ALWAYS BE EASILY AVAILABLE, TO APPLY TO BURNS.

WARNING

CARE MUST BE TAKEN WHEN YOU ADD COMPOUNDS THAT CONTAIN SOLID SODIUM HYDROXIDE TO WATER, BECAUSE HEAT IS GIVEN OUT WHEN THE COMPOUND DISSOLVES. MAKE MUCH MOVEMENT OF THE SOLUTION, WITH AIR OR MECHANICAL METHODS, AS YOU ADD THE COMPOUND TO THE SURFACE OF THE SOLUTION. DO NOT ADD LARGE QUANTITIES OF THE COMPOUND TO ONE SMALL AREA OF THE TANK, BECAUSE THE SOLUTION WILL BOIL.

WARNING

ALL INSTRUCTIONS GIVEN BY THE SAFETY OFFICER MUST BE OBEYED.

WARNING

THE OPERATORS MUST ALWAYS WEAR THE PROTECTIVE CLOTHING SUPPLIED, WHICH INCLUDES RUBBER GLOVES AND EYE PROTECTION.

WARNING

IF ACID SOLUTIONS GET INTO THE EYES, FULLY FLUSH THEM WITH CLEAN WATER, THEN GET MEDICAL AID IMMEDIATELY.

WARNING

EVERY POSSIBLE PRECAUTION MUST BE TAKEN TO KEEP SOLUTIONS AWAY FROM THE EYES AND BARE SKIN. OPERATORS MUST WEAR PROTECTIVE CLOTHING (THIS INCLUDES RUBBER GLOVES AND GOGGLES) WHEN THEY PREPARE AND USE ACID SOLUTIONS. BE SURE TO REGULARLY EXAMINE RUBBER GLOVES FOR PIN HOLES AND REPLACE THE GLOVES, IF NECESSARY.

WARNING

SAFETY NOTICES MUST BE IN A POSITION THAT THE OPERATOR CAN EASILY SEE.

WARNING

EYE-WASH BOTTLES AND HYDROFLUORIC ACID (HF) BURN JELLY MUST BE AS CLOSE AS POSSIBLE TO THE OPERATOR'S WORK AREA.

WARNING

IF CONTAMINTION OF THE SKIN OCCURS, FLUSH THE SKIN WITH A LARGE QUANTITY OF CLEAN WATER.

WARNING

FOR ALL BURNS, HOWEVER SLIGHT, IT IS IMPORTANT TO GET MEDICAL AID IMMEDIATELY.

WARNING

MEDICAL PERSONNEL MUST BE TOLD WHICH SOLUTION (THE ACIDS INVOLVED) HAS CAUSED THE BURN PARTICULARLY IF HYDROFLUORIC ACID IS A CONSTITUENT.

Procedure

1. SUBTASK 70-33-27-180-001 Index of Plating Solutions

   1. Plating solutions.

      1. Solution Code 1 is given as a Caustic - potassium permanganate descaling solution. Refer to the SPM TASK 70-11-48-110-501.

      2. Solution Code 27 is given as a 20 percent hydrochloric acid solution. Refer to Step.

      3. Solution Code 28 is given as a 55 percent nitric acid solution. Refer to Step.

      4. Solution Code 29 is given as a 20 percent sulfuric acid solution. Refer to Step.

      5. Solution Code 30 is given as a nickel strike solution. Refer to Step.

      6. Solution Code 31 is given as a 40 percent sulfuric acid solution. Refer to Step.

      7. Solution Code 32 is given as a titanium etching solution. Refer to Step.

      8. Solution Code 33 is given as a nitric-hydrofluoric acid solution. Refer to Step.

      9. Solution Code 34 is given as a 10 percent sulfuric acid solution. Refer to Step.

      10. Solution Code 35 is given as a 3 percent sodium hydroxide solution. Refer to Step.

      11. Solution Code 36 is given as a 65 percent hydrochloric acid solution. Refer to Step.

      12. Solution Code 37 is given as a sulfuric-hydrofluoric acid solution. Refer to Step.

      13. Solution Code 38 is given as a molten salt bath. Refer to Step.

      14. Solution Code 39 is given as an alkali cleaner (heavy duty). Refer to Step.

      15. Solution Code 40 is given as a chromium plating solution. Refer to Step.

      16. Solution Code 41 is given as a chromium strip solution. Refer to Step.

      17. Solution Code 42 is given as a chromium plating solution. Refer to Step.

      18. Solution Code 43 is given as a chromium plating solution (self regulating). Refer to Step.

      19. Solution Code 44 is given as a 20 percent nitric acid solution. Refer to Step.

      20. Solution Code 45 is given as a copper sulfate solution. Refer to Step.

      21. Solution Code 46 is given as an acid salt solution. Refer to Step.

      22. Solution Code 47 is given as an alkali cleaner solution (medium duty). Refer to Step.

      23. Solution Code 48 is given as an alkali smut removal solution. Refer to Step.

      24. Solution Code 49 is given as an alkali cleaner solution. Refer to Step.

      25. Solution Code 50 is given as a descaling solution. Refer to Step.

      26. Solution Code 51 is given as an 11 percent sodium hydroxide solution. Refer to Step.

      27. Solution Code 52 is given as a silver strike solution. Refer to Step.

      28. Solution Code 53 is given as a silver plate solution. Refer to Step.

      29. Solution Code 54 is given as a nickel strip solution (cyanide). Refer to Step.

      30. Solution Code 55 is given as a soft nickel plating solution (sulfamate). Refer to Step.

      31. Solution Code 56 is given as a strip solution. Refer to Step.

      32. Solution Code 57 is given as a nickel strip solution (without cyanide) for silver or copper alloy brazed parts. Refer to Step.

      33. Solution Code 58 is given as an alkali cleaner (heavy duty phosphate free). Refer to Step.

      34. Solution Code 59 is given as a nickel strip solution (without cyanide). Refer to Step.

      35. Solution Code 60 is given as a nickel strip solution (cyanide). Refer to Step.

      36. Solution Code 61 is given as a nickel strip solution (Without cyanide) (For silver or copper alloy brazed parts). Refer to Step.

      37. Solution Code 62 is given as a descaling solution. Refer to Step.

      38. Solution Code 63 is given as a descaling solution. Refer to Step.

      39. Solution Code 64 is given as a descaling solution. Refer to Step.

      40. Solution Code 65 is given as a gold-nickel braze strip solution. Refer to Step.

      41. Solution Code 66 is given as a nickel sulfamate strike solution. Refer to Step.

      42. Solution Code 67 is given as a stripping solution. Refer to Step.

      43. Solution Code 68 is given as a nickel strip solution (without cyanide) (For silver or copper alloy brazed parts). Refer to Step.

      44. Solution Code 69 (100 percent inhibited hydrochloric acid) is superceded. Refer to Step.

      45. Solution Code 70 is given as an inhibited hydrochloric acid solution (200:1). Refer to Step.

      46. Solution Code 71 is given as 50 percent inhibited hydrochloric acid solution. Refer to Step.

      47. Solution Code 81 is deleted.

      48. Solution Code 82 is given as a 100 percent hydrochloric acid solution. Refer to Step.

      49. Solution Code 83 is given as a Rochelle salt solution. Refer to Step.

      50. Solution Code 84 is given as a copper strike solution. Refer to Step.

      51. Solution Code 85 is deleted.

      52. Solution Code 86 is given as an electroless nickel plating solution. Refer to Step.

      53. Solution Code 87 is given as an electroless nickel plating solution. Refer to Step.

      54. Solution Code 88 is given as a chromic acid solution. Refer to Step.

      55. Solution Code 89 is given as a high speed chromium plating solution. Refer to Step and Step.

      56. Solution Code 90 is given as CoCrAlY and NiCoCrAlY stripping solution. Refer to Step.

      57. Solution Code 102 is given as a sodium carbonate-tartrate stripping solution. Refer to Step.

      58. Solution Code 118 is given as a nitric/inhibited phosphoric acid solution. Refer to Step.

      59. Solution Code 135 is given as a chromium strip solution. Refer to Step.

      60. Solution Code 136 is deleted (was heavy duty electrolytic cleaner). Refer to Step.

      61. Solution Code 137 is given as a heavy duty electrolytic cleaner without phosphate or cyanide. Refer to Step.

      62. Solution Code 138 is given as a chromium plating solution. Refer to Step.

      63. Solution Code 150 is given as hydrofluoric-nitric acid solution. Refer to Step.

      64. Solution Code 151 is given as a nitric-hydrofluoric acid solution. Refer to Step.

      65. Solution Code 152 is given as a hydrochloric-hydrofluoric acid solution. Refer to Step.

      66. Solution Code 153 is deleted.

      67. Solution Code 154 is given as electrolytic cleaner solution (cyanide-type, phosphate-free). Refer to Step.

      68. Solution Code 155 is given as an electroless nickel plating solution. Refer to Step.

      69. Solution Code 156 is given as an alkali smut removal solution. Refer to Step.

      70. Solution Code 163 is given as a braze strip solution. Refer to Step.

      71. Solution Code 164 is given as a braze strip solution. Refer to Step.

      72. Solution Code 165 is given as an electrolytic cleaner solution (noncyanide). Refer to Step.

      73. Solution Code 166 is given as a nickel strip solution (noncyanide). Refer to Step.

      74. Solution Code 169 is given as an electrolytic cleaner solution (noncyanide). Refer to Step.

      75. Solution Code 170 is given as sulfuric acid - 30 percent. Refer to Step.

      76. Solution Code 181 is given as dimethylglyoxime (DMGO) indicator solution. Refer to Step.

      77. Solution Code 203 is given as a silver plate stripper (non-cyanide). Refer to Step.

      78. Solution Code 204 is given as copper and silver plate stripper. Refer to Step.

2. SUBTASK 70-33-27-180-002 Make-up of Solution Code 1

   1. For the make up of Solution Code 1, refer to the SPMTASK 70-11-48-110-501, SUBTASK 70-11-48-110-001.

3. SUBTASK 70-33-27-180-003 Make-up of Solution Code 27

   1. Solution Code 27 is made up with 20 percent by volume of CoMat 01-099 HYDROCHLORIC ACID with operating limits of 15 to 25 percent by volume. The procedure is given below.

      1. Fill the tank to approximately 80 percent of its operating volume with clean cold tap water.

      2. Slowly and carefully fill the tank to its operating volume with CoMat 01-099 HYDROCHLORIC ACID.

      3. Stir to mix.

4. SUBTASK 70-33-27-180-004 Make-up of Solution Code 28

   1. Solution Code 28 is made up with 50 percent by volume of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE with operating limits of 45 to 65 percent by volume. The procedure is given below.

      1. Fill the tank to approximately 50 percent of its operating volume with clean cold tap water.

      2. Slowly and carefully fill the tank to its operating volume with CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE.

      3. Stir to mix.

5. SUBTASK 70-33-27-180-005 Make-up of Solution Code 29

   
   WARNING
   YOU MUST NOT ADD WATER TO CONCENTRATED SULFURIC ACID. SPLATTERING OF ACID WHICH WILL RESULT CAN CAUSE SERIOUS BURNS.

   1. Solution Code 29 is made-up with 20 percent by volume of CoMat 01-043 SULFURIC ACID H2SO4 with operating limits of 12 to 25 percent by volume. The procedure is given below.

      1. Fill the tank to approximately 80 percent of its operating volume with clean cold tap water.

      2. Slowly and carefully fill the tank to its operating volume with CoMat 01-043 SULFURIC ACID H2SO4.

      3. Stir to mix.

6. SUBTASK 70-33-27-180-006 Make-up of Solution Code 30

   1. Solution Code 30 is made up with 28.0 oz/gal (210.0 g/l) of CoMat 01-077 NICKEL CHLORIDE NiCl2+6H2O with nickel (as metal) operating limits of 6.5 to 25.0 oz/gal (48.8 to 187.5 g/l).

   2. Solution Code 30 is also made up with 37.4 fl oz/gal (291.72 ml/l) of CoMat 01-078 NICKEL CHLORIDE SOLUTION and 420 ml/gal (111 ml/l) of CoMat 01-099 HYDROCHLORIC ACID with operating limits of 330 to 510 ml/gal (87.20 to 134.70 ml/l).

   3. The procedure to make up the solution is given below.

      1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

      2. Slowly and carefully add the necessary quantity of CoMat 01-077 NICKEL CHLORIDE NiCl2+6H2O or CoMat 01-078 NICKEL CHLORIDE SOLUTION.

      3. Stir to dissolve and mix.

      4. Fill the tank to 80 percent of its operating volume with tap water.

      5. Filter the solution if it is made up with CoMat 01-077 NICKEL CHLORIDE NiCl2+6H2O.

      6. Slowly and carefully add the necessary quantity of CoMat 01-099 HYDROCHLORIC ACID.

      7. Stir to mix.

      8. Fill the tank to its operating volume with tap water.

      9. Stir to mix.

         NOTE

         If the solution was made up with CoMat 01-078 NICKEL CHLORIDE SOLUTION, this step can be ignored.

      10. Electrolytically purify the solution for a minimum of 24 hours with nickel plated dummy cathodes at 3 to 5 A/sq ft (0.021 to 0.035 A/sq in).

   4. If Solution Code 30 has organic contamination, the Hull Cell panel must show full coverage of nickel plate on the front side when processed at 3 A for 5 minutes in the solution being tested. In the range of 0 to 6 ASF, coverage is good but not necessary. A solution that does not meet this must be carbon treated as follows:

      1. Filter the solution into a clean auxiliary tank.

      2. Add 3 to 5 lb (1.36 to 2.27 Kg) of CoMat 01-281 ACTIVATED CARBON for every 100 gal (378.50 l) of solution.

      3. Agitate the solution for a minimum of 2 hours.

      4. Filter the solution into a clean tank, not the plating tank, until a clean effluent is obtained.

      5. Change the filter pads and filter the solution into the nickel strike tank.

      6. Analyze the strike solution and make the necessary adjustments.

         NOTE

         1. Good dummy results are obtained by the use of 2 sq ft (1858.06 sq cm) of dummy cathode area for every 100 gal (378.50 l) of plating solution.

         2. A 20 in (508 mm) long dummy cathode has 2.80 sq ft (0.26 sq m) surface area.

         3. A 48 in (1219 mm) long dummy cathode has 6.80 sq ft (0.63 sq m) surface area.

      7. Electrolytically purify the solution with a dummy cathode at 2 to 5 A/sq ft for a minimum of 12 hours before use.

   5. Solution maintanance.

      NOTE

      You can initially omit this procedure if the solution was made up with CoMat 01-078 NICKEL CHLORIDE SOLUTION. Refer to Step 6.B.

      1. It is recommended to electrolytically purify the solution as in step C.(10) for 24 hours minimum each week that the tank is in use.

7. SUBTASK 70-33-27-180-007 Make-up of Solution Code 31

   1. Solution Code 31 is made up with 40 percent by volume of CoMat 01-043 SULFURIC ACID H2SO4 with operating limits of 37 to 43 percent by volume. The procedure is given below.

      1. Fill the tank to approximately 60 percent of its operating volume with clean cold tap water.

      2. 

         WARNING

         THE SOLUTION WILL HEAT UP WHEN YOU ADD ACID.

         Slowly and carefully fill the tank to its operating volume with CoMat 01-043 SULFURIC ACID H2SO4.

      3. 

         WARNING

         THE SOLUTION WILL HEAT UP WHEN YOU MIX THE SOLUTION.

         Stir to mix.

8. SUBTASK 70-33-27-180-008 Make-up of Solution Code 32

   1. Solution Code 32 is made up with 35 percent by volume of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE with operating limits of 30 to 40 percent by volume and 3 percent by volume of CoMat 01-132 HYDROFLUORIC ACID HF with operating limits of 2.5 to 3.5 percent by volume. The procedure is given below.

      1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

      2. Slowly and carefully add the necessary quantity of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE.

      3. Stir to mix.

      4. Slowly and carefully add the necessary quantity of CoMat 01-132 HYDROFLUORIC ACID HF.

      5. Stir to mix.

      6. Fill the tank to its operating volume with tap water.

      7. Stir to mix.

9. SUBTASK 70-33-27-180-009 Make-up of Solution Code 33

   1. Solution Code 33 is made up with 70 percent by volume of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE with operating limits of 55 to 75 percent by volume and with either 10 percent by volume of CoMat 01-132 HYDROFLUORIC ACID HF (70 percent) with operating limits of 7 to 13 percent by volume or with 14.5 percent by volume of CoMat 01-510 HYDROFLUORIC ACID (49 percent) with operating limits of 10 to 18.6 percent by volume. The procedure is given below.

      1. Fill the tank to approximately 1/5 (20 percent) of its operating volume with clean cold tap water.

      2. Slowly and carefully add CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE to bring the solution to approximately 9/10 (90 percent) of the operating volume of the tank.

      3. Stir to mix.

      4. Slowly and carefully fill the tank to the operating volume with CoMat 01-132 HYDROFLUORIC ACID HF (70 percent), or CoMat 01-510 HYDROFLUORIC ACID (49 percent).

      5. Stir to mix.

10. SUBTASK 70-33-27-180-010 Make-up of Solution Code 34

    1. Solution Code 34 is made up with 10 percent by volume of CoMat 01-043 SULFURIC ACID H2SO4 with operating limits of 5 to 15 percent by volume. The procedure is given below.

       1. 

          WARNING

          YOU MUST NOT ADD WATER TO CONCENTRATED SULFURIC ACID. SPLATTERING OF ACID WHICH WILL RESULT CAN CAUSE SERIOUS BURNS.

          Fill the tank to approximately 90 percent of its operating limits with clean cold tap water.

       2. Slowly and carefully fill the tank to its operating volume with CoMat 01-043 SULFURIC ACID H2SO4.

       3. Stir to mix.

11. SUBTASK 70-33-27-180-011 Make-up of Solution Code 35

    1. Solution Code 35 is made up with 4 oz/gal (30.0 g/l) of CoMat 01-022 SODIUM HYDROXIDE NaOH (SOLID) with operating limits of 2 to 6 oz/gal (15.0 to 45.0 g/l). The procedure is given below.

       1. Fill the tank to approximately 50 percent of its operating volume with clean cold tap water.

       2. Slowly and carefully add the necessary quantity of CoMat 01-022 SODIUM HYDROXIDE NaOH (SOLID).

       3. Stir to dissolve.

       4. Fill the tank to its operating volume with tap water.

       5. Stir to mix.

12. SUBTASK 70-33-27-180-012 Make-up of Solution Code 36

    1. Solution Code 36 is made up with 65 percent by volume of CoMat 01-099 HYDROCHLORIC ACID with operating limits of 50 to 70 percent by volume. The procedure is given below.

       1. Fill the tank to approximately 35 percent of its operating volume with clean cold tap water.

       2. Slowly and carefully fill the tank to its operating volume with CoMat 01-099 HYDROCHLORIC ACID.

       3. Stir to mix.

13. SUBTASK 70-33-27-180-013 Make-up of Solution Code 37

    NOTE

    This solution preparation contains the option to use one of two concentrations of hydrofluoric acid (70 or 49 percent). Be sure to examine the label on the container for the CoMat number and concentration before you add the hydrofluoric acid to the solution.

    1. Solution Code 37 is made up with 25 percent by volume of CoMat 01-043 SULFURIC ACID H2SO4 with operating limits of 25 to 35 percent by volume and 4.5 percent by volume of CoMat 01-132 HYDROFLUORIC ACID HF (70 percent) or 6.4 percent by volume of CoMat 01-510 HYDROFLUORIC ACID (49 percent). Total acid as Sulfuric acid is 25 to 35 percent by volume. When additions are necessary, add both acids in the same proportion as in the initial make-up. The procedure is given below.

       1. Fill the tank to approximately 50 percent of its operating volume with clean water.

       2. 

          WARNING

          NEVER ADD WATER TO CONCENTRATED SULFURIC ACID; THIS WILL CAUSE SPATTERING OF ACIDS AND SPATTERING CAN CAUSE SERIOUS BURNS TO OCCUR.

          Slowly and carefully add the necessary amount of CoMat 01-043 SULFURIC ACID H2SO4 and stir to mix.

       3. Slowly and carefully add CoMat 01-132 HYDROFLUORIC ACID HF (70 percent) or CoMat 01-510 HYDROFLUORIC ACID (49 percent) and stir to mix.

       4. Fill the remaining operating volume of the tank to its operating volume with clean water.

       5. Stir to mix.

14. SUBTASK 70-33-27-180-014 Make-up of Solution Code 38

    1. Solution Code 38 must have weekly additions of CoMat 01-329 DESCALING SALT to replace drag-out and keep the operating level of the bath. Sludge must be removed one time each week minimum. More frequent removals of sludge must be made when told to do so. The operating limits are 2 to 20 percent sodium carbonate. The procedure is given below.

       1. 

          WARNING

          CoMat 01-329 DESCALING SALT IS A STRONG CAUSTIC MATERIAL. PREVENT SKIN AND EYE CONTACT. FACE MASK, GLOVES AND LONG SLEEVES MUST BE WORN WHEN HANDLING THIS MATERIAL.

          

          WARNING

          KEEP ALL CONTAINERS CLOSED WHEN NOT REMOVING MATERIAL. WHEN BAILING OUT A BATH, MOLTEN SALTS MUST NOT BE STORED IN A MOLD OR CONTAINER OF A DEPTH MORE THAN SIX INCHES. THE RISK OF SERIOUS ERUPTION WHILE SOLIDIFYING INCREASES WITH DEPTH. USE DRY BAILING TOOLS.

          Put the necessary quantity of CoMat 01-329 DESCALING SALT to fill a pot.

          NOTE

          Keep sealed salt containers in a dry place.

       2. Increase the temperature of the solution to the temperature specified for use.

15. SUBTASK 70-33-27-180-015 Make-up of Solution Code 39

    
    CAUTION
    THIS PROCESS SOLUTION MUST NOT BE USED TO CLEAN TITANIUM OR TITANIUM ALLOY PARTS.

    1. Solution Code 39 is made up with 12 oz/gal (90.0 g/l) of CoMat 01-138 ALKALI CLEANER (HEAVYDUTY) or CoMat 01-139 ALKALI CLEANER (HEAVYDUTY) with operating limits of 9 to 14 oz/gal (67.5 to 105.0 g/l). The procedure is given below.

       1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Slowly and carefully add the necessary quantity of CoMat 01-138 ALKALI CLEANER (HEAVYDUTY) or CoMat 01-139 ALKALI CLEANER (HEAVYDUTY).

       3. Stir to mix.

       4. Fill to 87.5 percent of its operating volume with tap water.

       5. Stir to mix.

       6. Increase the temperature of the solution to the temperature specified for use.

       7. Fill the tank to its operating volume with tap water and keep the specified temperature.

       8. Stir to mix.

16. SUBTASK 70-33-27-180-016 Make-up of Solution Code 40

    NOTE

    The low limit is recommended to keep the 100 to 1 ratio.

    1. Solution Code 40 is made up with 45 oz.wt/gal. (337.5 g/l) of CoMat 01-256 CHROMIC ACID FLAKES with operating limits of 40 to 50 oz.wt/gal. (300.0 to 375.0 g/l).

       NOTE

       The low limit is recommended to keep the 100 to 1 ratio.

    2. Solution Code 40 is also made up with 7 ml/gal (1.85 ml/l) of CoMat 01-043 SULFURIC ACID H2SO4 or CoMat 01-320 SULFURIC ACID with operating limits of 0.40 to 0.65 oz.wt/gal. (3.00 to 4.87 g/l).

    3. The procedure to make up the solution is given below.

       1. 

          WARNING

          YOU MUST NOT ADD WATER TO CONCENTRATED SULFURIC ACID. SPLATTERING OF ACID WHICH WILL RESULT CAN CAUSE SERIOUS BURNS.

          Fill the tank to approximately 50 percent of its operating volume with clean cold tap water.

       2. Increase the temperature of the water to 115 to 135 deg F (46 to 57 deg C).

          NOTE

          When you add CoMat 01-256 CHROMIC ACID FLAKES to a solution to be used for high speed plating, dissolve the CoMat 01-256 CHROMIC ACID FLAKES with clean cold tap water in a suitable container. Filter through sufficient layers of cheesecloth before you add it to the tank.

       3. Slowly and carefully add CoMat 01-256 CHROMIC ACID FLAKES and stir to dissolve.

       4. Slowly and carefully add the CoMat 01-043 SULFURIC ACID H2SO4 or CoMat 01-320 SULFURIC ACID.

       5. Fill the tank to approximately 85 percent of its operating volume with tap water and stir.

       6. Increase the temperature of the solution to the temperature specified in the plating procedure.

       7. Fill the tank to its operating volume with tap water and keep the specified temperature.

       8. Stir to mix.

17. SUBTASK 70-33-27-180-017 Make-up of Solution Code 41

    
    CAUTION
    CoMat 01-138 ALKALI CLEANER (HEAVYDUTY) MUST NOT BE USED TO CLEAN ALUMINUM, TITANIUM AND TITANIUM ALLOY GAS TURBINE ENGINE PARTS. CoMat 01-139 ALKALI CLEANER (HEAVYDUTY) MUST NOT BE USED TO CLEAN ALUMINUM GAS TURBINE ENGINE PARTS.

    1. Solution Code 41 is made up with 20 oz.wt/gal. (150.0 g/l) of CoMat 01-138 ALKALI CLEANER (HEAVYDUTY) or CoMat 01-139 ALKALI CLEANER (HEAVYDUTY) with operating limits of 18 to 23 oz.wt/gal. (135.0 to 172.5 g/l). The procedure is given below.

       1. Fill the tank to approximately 1/2 (50 percent) of its operating volume with tap water.

       2. Increase the temperature of the water to 120 to 160 deg F (49 to 71 deg C).

       3. Slowly and carefully add CoMat 01-138 ALKALI CLEANER (HEAVYDUTY) or CoMat 01-138 ALKALI CLEANER (HEAVYDUTY).

       4. Stir to dissolve.

       5. Fill the tank to approximately 7/8 (87 percent) of its operating volume with tap water.

       6. Stir to mix.

       7. Increase the temperature of the solution to the temperature specified in the plating procedure.

       8. Fill the remaining operating volume with tap water and keep the specified temperature.

       9. Stir to mix.

    2. Solution Maintenance.

       1. When this solution is used for stripping chromium plating, discard the solution when the stripping time becomes excessive.

18. SUBTASK 70-33-27-180-018 Make-up of Solution Code 42

    1. Solution Code 42 is made up with 25 oz/gal (187.5 g/l) of CoMat 01-256 CHROMIC ACID FLAKES with operating limits of 23 to 30 oz/gal (172.5 to 225.0 g/l).

    2. Solution Code 42 is also made up with 3.8 ml/gal (1.00 ml/l) of CoMat 01-043 SULFURIC ACID H2SO4 or CoMat 01-320 SULFURIC ACID with operating limits of 0.23 to 0.30 oz/gal (1.72 to 2.25 g/l).

    3. The procedure to make up the solution is given below.

       1. 

          WARNING

          YOU MUST NOT ADD WATER TO CONCENTRATED SULFURIC ACID. SPLATTERING OF ACID WHICH WILL RESULT CAN CAUSE SERIOUS BURNS.

          Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Increase the temperature of the water to 115 to 135 deg F (46 to 57 deg C).

          NOTE

          When you add CoMat 01-256 CHROMIC ACID FLAKES to a solution to be used for high speed plating, dissolve the CoMat 01-256 CHROMIC ACID FLAKES with clean cold tap water in a suitable container. Filter through sufficient layers of cheesecloth before you add it to the tank.

       3. Slowly and carefully add the CoMat 01-256 CHROMIC ACID FLAKES and stir to dissolve.

       4. Slowly and carefully add the CoMat 01-043 SULFURIC ACID H2SO4 or CoMat 01-320 SULFURIC ACID.

       5. Fill the tank to 85 percent of its operating volume with tap water and stir to mix.

       6. Increase the temperature of the solution to 115 to 135 deg F (46 to 57 deg C).

       7. Fill the tank to its operating volume with tap water and keep the specified temperature.

       8. Stir to mix.

19. SUBTASK 70-33-27-180-019 Make-up of Solution Code 43

    1. Solution Code 43 is made up with 40 oz/gal (300.0 g/l) of CoMat 01-257 CHROMIUM PLATING SALT with operating limits of 31 to 38 oz/gal (232.5 to 285.0 g/l) for the chromate and 0.14 to 0.28 oz/gal (1.05 to 2.10 g/l) for the sulfate. The procedure is given below.

       1. Fill the tank to 67 percent of its operating volume with clean cold tap water.

       2. Increase the temperature of the water to 135 deg F (57 deg C).

       3. Slowly and carefully add CoMat 01-257 CHROMIUM PLATING SALT.

       4. Add tap water to work level.

       5. Increase the temperature of the solution to 115 to 135 deg F (46 to 57 deg C) and stir to mix.

       6. Work with a dummy cathode at 250 A/sq ft for 2 hours before use. Stir frequently during this time.

20. SUBTASK 70-33-27-180-020 Make-up of Solution Code 44

    1. Solution Code 44 is made up with 17 percent by volume of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE with operating limits of 15 to 20 percent by volume. The procedure is given below.

       1. Fill the tank to approximately 50 percent of its operating volume with clean cold tap water.

       2. Slowly and carefully add the necessary amount of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE.

       3. Stir to mix.

       4. Fill the remaining volume of the tank with tap water and keep the specified temperature.

       5. Stir to mix.

21. SUBTASK 70-33-27-180-021 Make-up of Solution Code 45

    
    WARNING
    YOU MUST NOT ADD WATER TO CONCENTRATED SULFURIC ACID. SPLATTERING OF ACID WHICH WILL RESULT CAN CAUSE SERIOUS BURNS.

    1. Solution Code 45 is made up with 3 oz/gal (22.50 g/l) of CoMat 01-362 COPPER SULFATE (POWDER) and 5 ml/gal (1.32 ml/l) of CoMat 01-043 SULFURIC ACID H2SO4. The procedure is given below.

       1. Add the necessary quantity of clean cold tap water to the container.

       2. Slowly and carefully add the necessary quantity of CoMat 01-043 SULFURIC ACID H2SO4.

       3. Stir to mix.

       4. Add the necessary quantity of CoMat 01-362 COPPER SULFATE (POWDER).

       5. Stir to mix.

       6. Transfer to pint containers.

22. SUBTASK 70-33-27-180-022 Make-up of Solution Code 46

    
    WARNING
    EVERY POSSIBLE CARE MUST BE TAKEN TO AVOID THE SOLUTION COMING INTO CONTACT WITH EYES OR BARE SKIN. PROTECTIVE CLOTHING INCLUDING RUBBER GLOVES AND GOGGLES MUST BE PROVIDED FOR THE OPERATORS WHEN PREPARING AND USING THE SULFURIC ACID SOLUTION. RUBBER GLOVES SHOULD BE CHECKED REGULARLY FOR PIN HOLES AND REPLACED IF NECESSARY.

    1. Solution Code 46 is made up with 1 lb/gal (120.0 g/l) of CoMat 01-254 DRY ACID SALT or CoMat 01-255 DRY ACID SALT with operating limits of 12 to 20 oz/gal (90.0 to 150.0 g/l). The procedure is given below.

       1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

          NOTE

          On make up and addition, CoMat 01-254 DRY ACID SALT or CoMat 01-255 DRY ACID SALT must be added to the tank in full drum lots only.

       2. Slowly and carefully add the necessary quantity of CoMat 01-254 DRY ACID SALT or CoMat 01-255 DRY ACID SALT.

       3. Stir to dissolve.

       4. Fill the tank to its operating volume with clean cold tap water.

       5. Stir to mix.

23. SUBTASK 70-33-27-180-023 Make-up of Solution Code 47

    1. Solution Code 47 is made up with 8 oz/gal (60.0 g/l) of CoMat 01-176 ALKALI CLEANER (MEDIUMDUTY) with operating limits of 6 to 10 oz/gal (45.0 to 75.0 g/l). The procedure is given below.

       1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Increase the temperature of the water to 120 to 160 deg F (49 to 71 deg C).

       3. Slowly and carefully add CoMat 01-176 ALKALI CLEANER (MEDIUMDUTY) and stir.

       4. Fill the tank to 87 percent of its operating volume with tap water and stir.

       5. Increase the temperature of the solution to 180 to 210 deg F (82 to 99 deg C).

       6. Fill the tank to its operating volume with tap water and keep the specified temperature.

       7. Stir to mix.

24. SUBTASK 70-33-27-180-024 Make-up of Solution Code 48

    
    WARNING
    SOLUTION CODE 48 ALKALI SMUT REMOVAL SOLUTION IS VERY POISONOUS AND WILL CAUSE CAUSTIC BURNS. THERE MUST BE GOOD VENTILATION.
    
    WARNING
    YOU MUST USE THE PROTECTIVE CLOTHING SUPPLIED, TOGETHER WITH RUBBER GLOVES AND EYE PROTECTION.

    1. Solution Code 48 is made up with 33 oz/gal (247.5 g/l) of CoMat 01-143 ALKALI SMUT REMOVAL COMPOUND. There are operating limits of 18 to 24 oz/gal (135.0 to 180.0 g/l) for alkali material and 8 to 14 oz/gal (60.0 to 105.0 g/l) for free sodium cyanide. The operating limits of free sodium cyanide can be adjusted with CoMat 01-063 SODIUM CYANIDE NaCN. The procedure is given below.

       1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Slowly and carefully add CoMat 01-143 ALKALI SMUT REMOVAL COMPOUND.

       3. Stir to dissolve.

       4. Fill the tank to 85 percent of its operating volume with clean cold tap water.

       5. Increase the temperature of the solution to 120 deg F (49 deg C).

       6. Fill the tank to its operating volume with tap water and keep the specified temperature.

       7. Stir to mix.

25. SUBTASK 70-33-27-180-025 Make-up of Solution Code 49

    1. Solution Code 49 is made up with 8 oz/gal (60.0 g/l) of CoMat 01-141 ALKALI DRAWING COMPOUNDREMOVER with operating limits of 4 to 8 oz/gal (30.0 to 60.0 g/l). The procedure is given below.

       1. Fill the tank to 75 percent of its operating volume with clean cold tap water.

       2. Increase the temperature of the water to 140 deg F (60 deg C) or higher.

       3. Slowly and carefully add the necessary quantity of CoMat 01-141 ALKALI DRAWING COMPOUNDREMOVER to prevent too much boiling.

       4. Fully mix to dissolve.

       5. Fill the tank to 87 percent of its operating volume with clean tap water.

       6. Increase the temperature of the solution to the temperature specified for use.

       7. Fill the tank to its operating volume with tap water and keep the specified temperature.

       8. Stir to mix.

26. SUBTASK 70-33-27-180-026 Make-up of Solution Code 50

    1. Solution Code 50 is made up with 40 percent by volume of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE with operating limits of 33 to 45 percent by volume and 2 percent by volume of CoMat 01-132 HYDROFLUORIC ACID HF with operating limits of 1.5 to 2.5 percent.

       NOTE

       The operating limits for titanium content are applicable only on tanks that are used to process parts made from Titanium or Titanium alloys.

    2. For parts made from titanium or titanium alloys the operating limits for titanium content is 4 oz/gal (30 g/l) maximum.

    3. The procedure to make up the solution is given below.

       1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Slowly and carefully add the necessary quantity of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE.

       3. Stir to mix.

       4. Slowly and carefully add the necessary quantity of CoMat 01-132 HYDROFLUORIC ACID HF.

       5. Stir to mix.

       6. Fill the tank to its operating volume with tap water.

       7. Stir to mix.

27. SUBTASK 70-33-27-180-027 Make-up of Solution Code 51

    1. Solution Code 51 is made up with 16 oz/gal (120.0 g/l) of CoMat 01-022 SODIUM HYDROXIDE NaOH (SOLID) with operating limits of 12 to 18 oz/gal (90.0 to 135.0 g/l). The procedure is given below.

       1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Slowly and carefully add the necessary quantity of CoMat 01-022 SODIUM HYDROXIDE NaOH (SOLID).

       3. Stir to mix.

       4. Fill the tank to its operating volume with tap water and keep to the specified temperature.

       5. Stir to mix.

28. SUBTASK 70-33-27-180-028 Make-up of Solution Code 52

    1. Solution Code 52 is made up with 0.6 oz/gal (4.50 g/l) of CoMat 03-103 POTASSIUM SILVER CYANIDE or CoMat 03-104 POTASSIUM SILVER CYANIDE and 8 oz/gal (60.0 g/l) of CoMat 01-107 POTASSIUM CYANIDE KCN95% MIN.

    2. For silver metal in the solution the operating limits are 0.2 to 0.4 oz/gal (1.50 to 3.00 g/l). For free potassium cyanide (not chemically combined with silver cyanide) the operating limits are 7 to 9 oz/gal (52.5 to 67.5 g/l).

    3. The procedure to make up the solution is given below.

       1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Slowly and carefully add CoMat 01-107 POTASSIUM CYANIDE KCN95% MIN.

       3. Stir to dissolve.

       4. Slowly and carefully add CoMat 03-103 POTASSIUM SILVER CYANIDE or CoMat 03-104 POTASSIUM SILVER CYANIDE.

       5. Stir to dissolve and mix.

       6. Fill the tank to its operating volume with tap water.

       7. Stir to mix.

       8. Filter the solution before use.

29. SUBTASK 70-33-27-180-029 Make-up of Solution Code 53

    1. Solution Code 53 is made up with 13 oz/gal (97.5 g/l) of CoMat 03-103 POTASSIUM SILVER CYANIDE or CoMat 03-104 POTASSIUM SILVER CYANIDE and 10 oz/gal (75.0 g/l) of CoMat 01-107 POTASSIUM CYANIDE KCN95% MIN.

    2. Solution Code 53 is also made up with 4 oz/gal (30.0 g/l) of CoMat 03-105 POTASSIUM CARBONATE with operating limits of 4 to 16 oz/gal (30.0 to 120.0 g/l) and 1 oz/gal (7.5 g/l) of CoMat 01-129 POTASSIUM HYDROXIDE KOH, CoMat 01-130 POTASSIUM HYDROXIDE or CoMat 03-107 POTASSIUM HYDROXIDE with operating limits of 0.5 to 2 oz/gal (3.75 to 15.0 g/l).

    3. For silver metal in the solution the operating limits are 5 to 9 oz/gal (37.5 to 67.5 g/l). For free potassium cyanide (not chemically combined with silver cyanide) the operating limits are 8 to 12 oz/gal (60.0 to 90.0 g/l).

    4. The procedure to make up the solution is given below.

       1. 

          WARNING

          CYANIDE CAN KILL. PREVENT CONTACT WITH THE SKIN OR CLOTHING. THERE MUST BE GOOD VENTILATION.

          Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Slowly and carefully add CoMat 01-107 POTASSIUM CYANIDE KCN95% MIN.

       3. Stir to dissolve.

       4. Slowly and carefully add CoMat 03-103 POTASSIUM SILVER CYANIDE or CoMat 03-104 POTASSIUM SILVER CYANIDE.

       5. Stir to dissolve and mix.

       6. Slowly and carefully add CoMat 03-105 POTASSIUM CARBONATE.

       7. Slowly and carefully add CoMat 01-129 POTASSIUM HYDROXIDE KOH, CoMat 01-130 POTASSIUM HYDROXIDE or CoMat 03-107 POTASSIUM HYDROXIDE.

       8. Stir to dissolve and mix.

       9. Fill the tank to its operating limits with tap water.

       10. Stir to mix.

       11. Filter the solution before use.

30. SUBTASK 70-33-27-180-030 Make-up of Solution Code 54

    1. Solution Code 54 is made up with 8 oz/gal (60.0 g/l) of CoMat 01-178 NICKEL STRIP SALT, CoMat 01-179 NICKEL STRIP SALT, CoMat 01-180 NICKEL STRIP SALT, CoMat 01-181 NICKEL STRIP SALT or CoMat 01-182 NICKEL STRIP SALT.

    2. Solution Code 54 is also made up with 16 oz/gal (120.0 g/l) of CoMat 01-063 SODIUM CYANIDE NaCN with operating limits of 12 to 18 oz/gal (90.0 to 135.0 g/l).

    3. The procedure to make up the solution is given below.

       1. 

          WARNING

          CYANIDE CAN KILL. PREVENT CONTACT WITH THE SKIN OR CLOTHING. THERE MUST BE GOOD VENTILATION.

          

          WARNING

          PREVENT NICKEL STRIPPING SALT SPILLAGE OR DRAGOUT FROM COMING INTO CONTACT WITH PAPER, WOOD, CLOTH OR ALL ORGANIC MATERIALS OTHER THAN NEOPRENE. USE STEEL, STAINLESS STEEL OR NEOPRENE SCOOPS AND CONTAINERS.

          Fill the tank to the necessary quantity of clean cold tap water.

       2. Increase the temperature the water to 130 to 175 deg F (54 to 79 deg C).

       3. Add the necessary quantity of CoMat 01-178 NICKEL STRIP SALT, CoMat 01-179 NICKEL STRIP SALT, CoMat 01-180 NICKEL STRIP SALT, CoMat 01-181 NICKEL STRIP SALT or CoMat 01-182 NICKEL STRIP SALTsalt.

       4. Stir to mix.

       5. Slowly and carefully add the necessary quantity of CoMat 01-063 SODIUM CYANIDE NaCN.

       6. Stir to mix.

          NOTE

          2 oz/gal (15.0 g/l) of CoMat 01-178 NICKEL STRIP SALT, CoMat 01-179 NICKEL STRIP SALT, CoMat 01-180 NICKEL STRIP SALT, CoMat 01-181 NICKEL STRIP SALT or CoMat 01-182 NICKEL STRIP SALT must be added when stripping rate becomes impractical.

          1. Discard the solution when it no longer operates to the nickel strip salt additions.

       7. Increase the temperature of the solution to the temperature specified in the plating procedure.

31. SUBTASK 70-33-27-180-031 Make-up of Solution Code 55

    
    WARNING
    CoMat 03-108 SULFAMATE NICKEL PLATING SOLUTION AND CoMat 03-131 SULFAMATE NICKEL REPLENISHING SOLUTION ARE STRONGLY ACIDIC. USE THE NECESSARY PROTECTION.

    NOTE

    Solution B is an alternative solution to Solution A when CoMat 03-108 SULFAMATE NICKEL PLATING SOLUTION is not available.

    1. Material Requirements.

       1. Solution A.

          Material		Make-up		Operating Limits
          CoMat 01-549 BRAZE STRIP COMPOUND		90 percent of Volume (approximately)		Nickel (as metal) 10 to 12 oz.wt/gal (75 to 90.0 g/l).
          CoMat 03-131 SULFAMATE NICKEL REPLENISHING SOLUTION		As necessary		Adjust nickel content as necessary
          CoMat 01-015 BORIC ACID H3BO3		As necessary		4 oz.wt/gal (30 g/l), minimum
          CoMat 03-130 SULFAMIC ACID or Sodium Hydroxide Solution (11 percent) (Solution Code 51)		Decrease pH with CoMat 03-130 SULFAMIC ACID or increase pH with Solution Code 51 as necessary		pH 3.5 to 4.5, electrometric
          CoMat 01-279 SULFAMATE NICKEL ANTI-PIT-AGENT(LIQUID)		As necessary		As necessary

       2. Solution B.

          Material		Make-up		Operating Limits
          CoMat 03-131 SULFAMATE NICKEL REPLENISHING SOLUTION		50 percent of Volume (approximately)		Nickel (as metal) 10 to 12 oz.wt/gal (75 to 90.0 g/l).
          CoMat 01-015 BORIC ACID H3BO3		4 oz.wt/gal (30g/l)		4 oz.wt/gal (30 g/l), minimum
          CoMat 01-557 NICKEL CHLORIDE (SALTS) or CoMat 01-078 NICKEL CHLORIDE SOLUTION		As necessary		Chloride (as Cl) 0.8 to 1.2 oz.wt/gal (6 to 9 g/l) Note: Operate to the lower end of the strength range
          CoMat 03-130 SULFAMIC ACID or Sodium Hydroxide Solution (11 percent) (Solution Code 51)		Decrease pH with CoMat 03-130 SULFAMIC ACID or increase pH with Solution Code 51 as necessary		pH 3.5 to 4.5, electrometric
          CoMat 01-279 SULFAMATE NICKEL ANTI-PIT-AGENT(LIQUID)		As necessary		As necessary

       3. Purified Nickel Chloride Solution.

          Material		Make-up
          CoMat 01-557 NICKEL CHLORIDE (SALTS) or CoMat 01-078 NICKEL CHLORIDE SOLUTION		As necessary to give a nickel chloride (as NiCl2) content of 30 oz.wt/gal (225 g/l)
          Sodium Hydroxide Solution (11 percent) (Solution Code 51)		As specified to increase pH
          CoMat 01-280 HYDROGEN PEROXIDE H202		As specified to purify the solution
          Activated Carbon		As specified to purify the solution

    2. Preparation of Solution Code 55 Soft Nickel Plating Solution (Sulfamate).

       1. Prepare Solution A or Solution B nickel plating solution by these steps:

          1. Solution A.

             1. Fill the tank to approximately 90 percent of the operating volume with CoMat 03-108 SULFAMATE NICKEL PLATING SOLUTION.

             2. Increase the temperature of the solution to 115 to 130 deg F (46 to 54 deg C).

          2. Solution B.

             1. Fill the tank to approximately 50 percent of the operating volume with CoMat 03-131 SULFAMATE NICKEL REPLENISHING SOLUTION.

             2. Slowly and carefully add the necessary amount of CoMat 01-015 BORIC ACID H3BO3, and stir to mix.

             3. Increase the temperature of the solution to 115 to 130 deg F (46 to 54 deg C).

       2. Measure the chloride content of the nickel plating solution (Solution A or Solution B). Refer to Test Method P-100 in the SPM TASK 70-11-47-110-501, SUBTASK 70-11-47-180-033.

       3. Calculate the quantity of nickel chloride that is necessary to bring the chloride to the requirements of Solution Code 55 (0.8 to 1.2 oz.wt/gal (6 to 9.0 g/l) as chloride (Cl)).

       4. Make up sufficient nickel chloride solution, with a nickel chloride content of 30 oz.wt/gal (225 g/l), to bring the chloride content of the plating solution to the requirements of Solution Code 55. Use CoMat 01-557 NICKEL CHLORIDE (SALTS) or CoMat 01-078 NICKEL CHLORIDE SOLUTION.

       5. Increase the temperature of the nickel solution to approximately 115 to 130 deg F (46 to 54 deg C).

       6. Purify the nickel chloride solution.

          NOTE

          Solution Code 51 will increase the pH; CoMat 03-130 SULFAMIC ACID will decrease the pH.

          1. Adjust the pH of the nickel chloride solution to 5.0 to 5.5 by the addition of Solution Code 51 Sodium Hydroxide Solution (11 percent). This addition will produce a heavy white precipitate. To help in redissolution of the precipitate, make the additions into the tank overflow.

          2. Add 0.1 fl.oz/gal (0.77 ml/l) of CoMat 01-280 HYDROGEN PEROXIDE H202 to the nickel chloride solution. Use mechanical agitation (such as, a corrosion-resistant stainless steel solution pump, mixer, or up/down lift), to mix the solution.

          3. Add 1 oz.wt/gal (7.5 g/l) of CoMat 01-281 ACTIVATED CARBON to the nickel chloride solution as a slurry in a small quantity of water or nickel plating solution.

          4. Use mechanical agitation to mix the nickel chloride solution for a minimum of 2 hours.

          5. Let the nickel chloride solution sit, without agitation, for a minimum of 12 hours.

          6. Filter the nickel chloride solution into a clean tank; use an auxiliary tank that is not the nickel plating tank.

          7. Replace the filter pads, and then filter the nickel chloride solution into the nickel plating tank that contains the nickel plating solution.

       7. Analyze again the nickel plating solution for chloride and adjust with purified nickel chloride solution, as necessary.

       8. Adjust the pH of the nickel plating with CoMat 03-130 SULFAMIC ACID or Solution Code 51 Sodium Hydroxide Solution (11 percent), as necessary.

          NOTE

          For the best results, use of 2 sq ft of dummy cathode area for each 100 gallons of plating solution (490.9 sq.cm of dummy cathode area for each 100l of plating solution).

       9. Electrolytically purify the nickel plating solution for 24 hours minimum each week with a corrugated dummy cathode at an average current density of 3 to 5 amps/sq.ft. (3.23 to 5.38 amps/1000 sq. cm).

    3. Purification of Solution Code 55 Nickel Plating Solution.

       1. Filter the nickel plating solution into a clean auxiliary tank.

       2. Increase the temperature of the nickel plating solution to 115 to 130 deg F (46 to 54 deg C).

       3. Add 5 to 6 lbs of CoMat 01-281 ACTIVATED CARBON, or 9 to 11 lbs of CoMat 01-282 ACTIVATED CARBON (GRANULAR), which can be in nylon bags, for each 100 gal (378.50 l) of nickel plating solution (599 to 719 g of CoMat 01-281 ACTIVATED CARBON or 1.08 to 1.32 kg of CoMat 01-282 ACTIVATED CARBON (GRANULAR) Activated Carbon (Granular) for each 100l of nickel plating solution).

       4. Use mechanical agitation (such as, a corrosion-resistant stainless steel solution pump, mixer, or up/down lift), to mix the nickel plating solution for 3 to 4 hours.

       5. Let the nickel plating solution sit, without agitation, to let the carbon particles fall to the bottom of the tank.

       6. Filter the nickel plating solution into a clean tank until the effluent is clear (not turbid or cloudy); use an auxiliary tank that is not the nickel plating tank.

       7. Replace the filter pads, and then filter the nickel plating solution into the nickel plating tank.

       8. Analyze the nickel plating solution and adjust the solution as necessary.

          NOTE

          For the best results, use of 2 sq ft of dummy cathode area for each 100 gallons of plating solution (490.9 sq.cm of dummy cathode area for each 100l of plating solution).

       9. Electrolytically purify the nickel plating solution with corrugated dummy cathodes at 3 to 5 amps/sq.ft (3.23 to 5.38 amps/sq.cm) for 24 hours minimum before use.

       10. Measure the stress of the nickel plating solution with a spiral contractometer one time minimum every three months. Refer to Test Method P-66 in the SPM TASK 70-11-47-110-501, SUBTASK 70-11-47-180-028.

           1. The nickel plate stress in Solution Code 55 nickel plating solution must be 5000 psi (34473.8 kPa) in compression to 15000 psi (103421.4 kPa) in tension.

           2. If necessary, correct the stress of the nickel plating solution by these steps:

              NOTE

              To decrease the time necessary to correct the compressive stress condition, it is permitted to decrease the pH of the nickel plating solution to 2.4 with CoMat 03-130 SULFAMIC ACID during the electrolytic treatment, and then increase then pH to the operating range of 3.5 to 4.5 with Solution Code 55 Sodium Hydroxide when the electrolytic treatment is completed.

              1. If tensile stress of the nickel plating solution is too low, or the compressive stress is too high, electrolytically activate the nickel plating solution with corrugated dummy cathodes at the maximum possible amperage possible for a time that is necessary to correct the stress condition of the plate.

                 NOTE

                 This electrolytic activation removes metal contamination (such as, copper, lead, zinc) from the nickel plating solution.

              2. If the tensile strength of Solution Code 55 is too high, electrolytically activate the nickel plating solution with corrugated dummy cathodes at 3 to 5 amps/sq. ft (3.23 to 5.38 amps/1000 sq.cm) for 24 hours minimum.

    4. Keep the CoMat 01-279 SULFAMATE NICKEL ANTI-PIT-AGENT(LIQUID) by these steps:

       1. Put clean 4 inch (101.6 mm) and 7 inch (177.8 mm) diameter rings (made of approximately 1/16 inch (1.587 mm) diameter stainless steel wire) fully into a calm area of the bath (that is, where there is little or no movement of the solution), and then remove the rings carefully in a horizontal position.

          1. A solution film must stay across the 4 inch (101.6 mm) ring a minimum of 75 percent of the times tried.

             NOTE

             You can use a 5 inch (127 mm) and 6 inch (152.4 mm) rings (made of approximately 1/16 inch (1.587 mm) diameter stainless steel wire) to get intermediate measures of concentration.

          2. The solution film on the 7 inch (177.8 mm) ring must break a minimum of 75 percent of the times tried.

       2. If a solution film holds on the 4 inch (101.6 mm) ring less than 75 percent of the time, do these steps:

          1. Add CoMat 01-279 SULFAMATE NICKEL ANTI-PIT-AGENT(LIQUID) to the nickel plating solution in the ratio of 2 fl.oz of CoMat 01-279 SULFAMATE NICKEL ANTI-PIT-AGENT(LIQUID) to 100 gal of plating solution (156 ml of CoMat 01-279 SULFAMATE NICKEL ANTI-PIT-AGENT(LIQUID) to 1000l of plating solution).

          2. Let the nickel plating solution mix for at least 2 hours.

          3. Do a check of the concentration again with a 4 inch (101.6 mm) ring.

          4. If a solution film still does not hold across the 4 inch (101.6 mm) ring a minimum of 75 percent of the times tried, do the procedure again.

       3. If a solution film holds across the 7 inch (177.8 mm) ring 25 percent, or more, of the times tried, use carbon treatment to decrease the amount of antipit wetting agent in the solution by one of these procedures:

          1. Industrial-type filter system procedure.

             1. Replace the filter papers in the industrial-type filter systems with bagged CoMat 01-282 ACTIVATED CARBON (GRANULAR) in Nylon bags.

             2. Flow the solution through the filter system until you correct the condition.

             3. Replace the carbon after each 8 to 12 hours of operation.

          2. Carbo-clear unit procedure.

             1. Flow the solution through a carbo-clear unit until you correct the condition.

             2. Replace the carbon in the carbo-clear unit after each 8 to 12 hours of operation.

32. SUBTASK 70-33-27-180-032 Make-up of Solution Code 56

    1. Solution Code 56 is made up with 8 oz.wt/gal (60.0 g/l) of CoMat 01-062A NICKEL ELECTROPLATE STRIPPINGSOLN, or CoMat 01-178 NICKEL STRIP SALT and 18 oz.wt/gal (135.0 g/l) of CoMat 01-063 SODIUM CYANIDE NaCN with operating limits of 18 to 24 oz.wt/gal (135.0 to 180.0 g/l).

    2. The procedure to make up the solution is given below.

       1. 

          WARNING

          CYANIDE CAN KILL. PREVENT CONTACT WITH THE SKIN OR CLOTHING. THERE MUST BE GOOD VENTILATION.

          

          WARNING

          PREVENT NICKEL STRIPPING SALT SPILLAGE OR DRAGOUT FROM COMING INTO CONTACT WITH PAPER, WOOD, CLOTH OR ALL ORGANIC MATERIALS OTHER THAN NEOPRENE. USE STEEL, STAINLESS STEEL OR NEOPRENE SCOOPS AND CONTAINERS.

          Fill the tank with the necessary amount of tap water.

       2. Add the necessary amount of CoMat 01-062 NICKEL ELECTROPLATE STRIPPINGSOLNA or CoMat 01-178 NICKEL STRIP SALT.

       3. Stir to mix.

       4. Slowly and carefully add the necessary amount of CoMat 01-063 SODIUM CYANIDE NaCN.

       5. Stir to mix.

       6. Increase the temperature of the solution to the temperature specified in the plating procedure.

       7. Add 2 oz.wt/gal (15.0 g/l) of CoMat 01-062 NICKEL ELECTROPLATE STRIPPINGSOLN or CoMat 01-178 NICKEL STRIP SALT, when the stripping rate becomes not effective. Discard the solution when it no longer responds to the nickel strip salt additions.

33. SUBTASK 70-33-27-180-033 Make-up of Solution Code 57

    
    CAUTION
    DO NOT LET SOLUTION A FREEZE.
    
    CAUTION
    KEEP SOLUTION CODE 57 COOL AND COVERED WHEN NOT IN USE.
    
    CAUTION
    DO NOT USE THIS SOLUTION FOR STRIPPING COPPER OR COPPER PLATE.
    
    CAUTION
    DO NOT USE BRASS OR COPPER HOOKS IN THIS SOLUTION.
    
    CAUTION
    REMOVE CADMIUM PLATE FROM PARTS BEFORE THEY ARE PUT FULLY INTO THIS SOLUTION.

    1. Solution Code 57 is made up with CoMat 01-096 ELECTROLYTIC STRIPPINGSOLUTION where 20 percent is solution A and 20 percent is solution B with operating limits of 18 to 22 percent by volume. 60 percent of water by volume is also used. The procedure is given below. CoMat 01-278 NICKEL STRIP ADDITIVE (regenerator) is added, as necessary, to adjust the solution.

       1. Fill the tank with 50 percent of the necessary quantity of water.

       2. Slowly and carefully add the necessary quantity of CoMat 01-096 ELECTROLYTIC STRIPPINGSOLUTION, Solution A.

       3. Stir to mix.

       4. Slowly and carefully add the necessary quantity of CoMat 01-096 ELECTROLYTIC STRIPPINGSOLUTION, Solution B.

       5. Stir to mix.

       6. Add water to the remaining operating volume of the tank.

       7. Stir to mix.

    2. Solution maintenance.

       1. Refer to the manufacturer's instructions to keep the solution.

    3. Regenerator maintenance.

       1. Refer to the manufacturer's instructions to keep the regenerator, CoMat 01-278 NICKEL STRIP ADDITIVE.

34. SUBTASK 70-33-27-180-034 Make-up of Solution Code 58

    1. Solution Code 58 is made up with 16 oz/gal (120.0 g/l) of CoMat 01-302 ALKALI CLEANER PHOSPHATE-FREE with operating limits of 12 to 20 oz/gal (90.0 to 150.0 g/l). The procedure is given below.

       1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Increase the temperature of the water to 100 to 120 deg F (38 to 49 deg C).

       3. Slowly and carefully add the specified quantity of CoMat 01-302 ALKALI CLEANER PHOSPHATE-FREE.

       4. Stir to dissolve.

       5. Fill the tank to 88 percent of its operating volume with tap water.

       6. Stir to mix.

       7. Increase the temperature of the solution to 120 to 140 deg F (49 to 60 deg C).

       8. Fill the tank to its operating volume with tap water and keep the specified temperature.

       9. Stir to mix.

    2. Alternatively, Solution Code 58 is made up with 100 percent by volume of CoMat 01-462 ALKALI CLEANER, PHOSPHATE-FREE with operating limits of 75 to 100 percent by volume. The procedure is given below.

       1. Fill the tank to its operating volume with CoMat 01-462 ALKALI CLEANER, PHOSPHATE-FREE.

       2. Increase the temperature of the solution to the temperature specified in the procedure.

    3. Solution maintenance.

       1. Refer to the manufacturer's instructions to keep the solution made by either of the above methods.

35. SUBTASK 70-33-27-180-035 Make-up of Solution Code 59

    1. Solution Code 59 is made up with 20 oz/gal (150.0 g/l) of CoMat 01-190 NICKEL STRIP SALT (NONCYANIDE) and 20 oz/gal (150.0 g/l) of CoMat 01-191 NICKEL STRIP SALT (NONCYANIDE). The procedure is given below.

       1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Increase the temperature of the water to 130 deg F (54 deg C).

       3. Slowly and carefully add the specified quantity of CoMat 01-190 NICKEL STRIP SALT (NONCYANIDE).

       4. Fully mix.

       5. Increase the temperature of the solution to 130 deg F (54 deg C) while you stir.

       6. Slowly and carefully add the necessary quantity of CoMat 01-191 NICKEL STRIP SALT (NONCYANIDE).

       7. Stir until fully dissolved.

       8. Fill the tank to its operating volume with clean cold tap water.

       9. Increase the temperature of the solution to 130 deg F (54 deg C).

    2. Solution maintenance.

       1. Add clean cold tap water when necessary to replace loss in bath volume to evaporation.

       2. Constant mechanical agitation is necessary during operation.

       3. Refer to the manufacturer's instructions to keep the solution.

36. SUBTASK 70-33-27-180-036 Make-up of Solution Code 60

    
    WARNING
    DO NOT LET NICKEL STRIP COMPOUND TOUCH PAPER, WOOD, CLOTHING OR ALL ORGANIC MATERIALS OTHER THAN NEOPRENE. USE STEEL, STAINLESS STEEL OR NEOPRENE SCOOPS AND CONTAINERS.

    1. Solution Code 60 is made up with 25 oz/gal (187.5 g/l) of CoMat 01-192 NICKEL STRIP COMPOUND or CoMat 01-194 NICKEL STRIP COMPOUND and CoMat 01-063 SODIUM CYANIDE NaCN with operating limits of 12 to 18 oz/gal (90.0 to 135.0 g/l). The procedure is given below.

       1. Fill the tank with the necessary quantity of clean cold tap water.

       2. Increase the temperature of the water to 130 to 175 deg F (54 to 79 deg C).

       3. Slowly and carefully add the necessary quantity of CoMat 01-192 NICKEL STRIP COMPOUND or CoMat 01-194 NICKEL STRIP COMPOUND.

       4. Stir to mix.

          NOTE

          5 oz/gal (37.5 g/l) of CoMat 01-192 NICKEL STRIP COMPOUND or CoMat 01-194 NICKEL STRIP COMPOUND must be added when stripping rate becomes impractical.

          1. Discard the solution where it no longer responds to the nickel strip salt additions.

       5. Increase the temperature of the solution to the temperature specified in the plating procedure.

37. SUBTASK 70-33-27-180-037 Make-up of Solution Code 61

    
    CAUTION
    KEEP SOLUTION CODE 61 COVERED WHEN NOT IN USE.
    
    CAUTION
    DO NOT USE THIS SOLUTION FOR STRIPPING COPPER OR COPPER PLATE.
    
    CAUTION
    DO NOT USE BRASS OR COPPER HOOKS IN THIS SOLUTION.
    
    CAUTION
    REMOVE CADMIUM PLATE FROM PARTS BEFORE THEY ARE PUT FULLY INTO THIS SOLUTION.

    1. Solution Code 61 is made up with 5.3 oz/gal (39.75 g/l) of CoMat 01-193 NICKEL STRIPPER part 1, and 10 percent by volume of CoMat 01-193 NICKEL STRIPPER part 2, and the remainder is water. The procedure is given below.

       1. Dissolve CoMat 01-193 NICKEL STRIPPER part 1 in a container of clean warm tap water and add to the tank.

       2. Fill the tank to 67 percent of its volume with water.

       3. Dilute the necessary quantity of CoMat 01-193 NICKEL STRIPPER part 2 with an equal volume of water.

       4. Add CoMat 01-193 NICKEL STRIPPER part 2 mixture to the tank while you stir.

       5. Fill the tank to its operating volume with water.

       6. Stir to mix.

    2. Solution maintenance.

       1. Refer to the manufacturer's instructions to keep the solution.

38. SUBTASK 70-33-27-180-038 Make-up of Solution Code 62

    1. Solution Code 62 is made up with 40 percent by volume of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE with operating limits of 30 to 45 percent by volume and 2.5 percent by volume of CoMat 01-199 ACID ADDITION AGENT with operating limits of 2 to 3 percent by volume. The procedure is given below. The operating limit for titanium in the solution is 12 g/l maximum.

       1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Slowly and carefully add the necessary quantity of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE.

       3. Stir to mix.

       4. Slowly and carefully add the necessary quantity of CoMat 01-199 ACID ADDITION AGENT.

       5. Stir to mix.

       6. Fill the tank to its operating volume with tap water.

       7. Stir to mix.

39. SUBTASK 70-33-27-180-039 Make-up of Solution Code 63

    1. Solution Code 63 is made up with 49 percent by volume of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE with operating limits of 40 to 55 percent by volume and 7 percent by volume of CoMat 01-200 ACID ADDITION AGENT with operating limits of 6 to 8 percent by volume. The procedure is given below. The operating limit for titanium in the solution is 12 g/l maximum.

       1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Slowly and carefully add the necessary quantity of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE.

       3. Stir to mix.

       4. Slowly and carefully add the necessary quantity of CoMat 01-200 ACID ADDITION AGENT.

       5. Stir to mix.

       6. Fill the tank to its operating volume with tap water.

       7. Stir to mix.

40. SUBTASK 70-33-27-180-040 Make-up of Solution Code 64

    1. Solution Code 64 is made up with 60 percent by volume of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE with operating limits of 55 to 65 percent by volume and 1.5 oz/gal (11.25 g/l) of CoMat 01-198 ACID ADDITION AGENT with operating limits of 1 to 2 oz/gal (7.5 to 15.0 g/l).

       1. Fill the tank to 33 percent of its operating volume with clean cold tap water.

       2. Slowly and carefully add the necessary quantity of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE.

       3. Stir to mix.

       4. Slowly and carefully add the necessary quantity of CoMat 01-198 ACID ADDITION AGENT.

       5. Stir to mix.

       6. Fill the tank to its operating volume with tap water.

       7. Stir to mix.

41. SUBTASK 70-33-27-180-041 Make-up of Solution Code 65

    1. Solution Code 65 is made up with 100 parts by volume of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE and 1 part by volume of CoMat 01-380 GOLD-NICKEL BRAZE STRIPSALTS part A with operating limits of 0.5 to 1.5 percent by volume, and 5 oz/gal (37.5 g/l) of CoMat 01-380 GOLD-NICKEL BRAZE STRIPSALTS part B with operating limits of 4 to 6 oz/gal (30.0 to 45.0 g/l). The procedure is given below.

       1. Fill the tank with the necessary quantity of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE.

       2. Slowly and carefully add the necessary quantity of CoMat 01-380 GOLD-NICKEL BRAZE STRIPSALTS part B, with constant stirring, in approximately 2 to 3 lb (approximately 910g to 1350g) increments.

       3. Stir to dissolve.

       4. Slowly and carefully add the necessary quantity of CoMat 01-380 GOLD-NICKEL BRAZE STRIPSALTS part A, with constant stirring, in approximately 1 pt to 1 qt (approximately 475 to 945 ml) increments.

    2. Solution maintenance.

       1. Refer to the manufacturer's instructions to keep the solution.

42. SUBTASK 70-33-27-180-042 Make-up of Solution Code 66

    NOTE

    This solution is to be used at ambient temperature to 100 deg F (38 deg C).

    1. Solution Code 66 is made up by these steps:

       1. 50 percent by volume of CoMat 03-131 SULFAMATE NICKEL REPLENISHING SOLUTION with nickel (as metal) operating limits of 10 to 12 oz/gal (75.0 to 90.0 g/l).

       2. 4 oz/gal (30.0 g/l) of CoMat 01-015 BORIC ACID H3BO3 with operating limits of a minimum of 4 oz/gal (30.0 g/l).

       3. 1.54 fl oz/gal (11.86 ml/l) of CoMat 01-099 HYDROCHLORIC ACID with operating limits of 0.4 to 1.0 fl oz/gal (3.08 to 7.70 ml/l).

       4. 2.7 oz/gal (20.25 g/l) of CoMat 03-130 SULFAMIC ACID adjust the pH as necessary with a maximum pH of 1.5.

    2. The equipment necessary for the make up of Solution Code 66 are a steel or fiberglass tank lined with sulfur-free rubber, plastisol or plastic. Ceramic or glass tanks can also be used.

    3. The procedure for the make up of Solution Code 66 is given below.

       1. Fill the tank to 40 percent of its operating volume with clean cold tap water.

       2. Slowly and carefully add CoMat 01-015 BORIC ACID H3BO3 with agitation.

       3. Slowly and carefully add CoMat 01-099 HYDROCHLORIC ACID with agitation.

       4. Slowly and carefully add CoMat 01-130 POTASSIUM HYDROXIDE with agitation.

       5. Slowly and carefully add the necessary quantity of CoMat 03-131 SULFAMATE NICKEL REPLENISHING SOLUTION.

       6. Fill the tank to its operating volume with tap water.

       7. Stir to mix.

    4. Solution maintenance.

       1. Refer to the manufacturer's instructions to keep the solution.

    5. Solution maintenance test procedure.

       1. Nickel metal, refer to the SPM TASK 70-11-47-110-501, SUBTASK 70-11-47-180-016.

       2. Boric acid, refer to the SPM TASK 70-11-47-110-501, SUBTASK 70-11-47-180-030.

       3. Hydrochloric acid.

          1. Pipet 5 ml of working solution into a 250 ml beaker.

          2. Dilute to approximately 70 ml.

          3. Add 3 ml of CoMat 01-327 NITRIC ACID.

          4. Add 10 ml of 0.1M silver nitrate solution. Refer to the SPM TASK 70-11-47-110-501, SUBTASK 70-11-47-180-033 for the make-up and standardization of a 0.1M silver nitrate solution.

          5. Increase the temperature of the solution to 212 deg F (100 deg C) and keep at this temperature for 5 minutes.

          6. Decrease the temperature of the solution to room temperature.

          7. Filter through CoMat 02-192 FILTER PAPER into a 250 ml erhlenmeyer flask. Wash through the filter three times with CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER. The filtrate must be clear. If not, do steps (e) to (g) again.

             NOTE

             Ferric indicator is a 10 percent solution of ferric ammonium sulfate.

          8. Add 5 ml of ferric indicator to the filtrate.

          9. Titrate excess of silver with 0.1M sodium thiocyanate solution until a permanent red-brown color is produced. For the make up and standardization of sodium thiocyanate solution, refer to the SPM TASK 70-11-47-110-501, SUBTASK 70-11-47-180-018.

    6. Calculations.

       1. fl oz/gal hydrochloric acid = (10 - ml 0.1M thiocyanate) x 0.256.

       2. ml/l hydrochloric acid = (10 - ml 0.1M thiocyanate) x 2.

       3. For pH, refer to the SPM TASK 70-11-47-110-501, SUBTASK 70-11-47-180-030.

43. SUBTASK 70-33-27-180-043 Make-up of Solution Code 67

    1. Solution Code 67 is made up with 50 percent of CoMat 01-344 STRIPPING COMPOUND and 1 lb/gal (119.80 g/l) of CoMat 01-345 STRIPPING COMPOUND. The procedure is given below.

       1. Fill the tank to 40 percent of its operating volume with clean cold tap water.

       2. Add the necessary quantity of CoMat 01-344 STRIPPING COMPOUND while you stir.

       3. Add the necessary quantity of CoMat 01-345 STRIPPING COMPOUND.

       4. Mix to dissolve.

       5. Fill the tank to its operating volume with tap water.

    2. Solution maintenance.

       1. Operation without replenishment is recommended. Discard when the solution becomes ineffective or falls outside of the operating limits, if not to be kept.

       2. Refer to the manufacturer's instructions.

44. SUBTASK 70-33-27-180-044 Make-up of Solution Code 68

    1. Solution Code 68 is made up with 20 percent of CoMat 01-315 NICKEL STRIP LIQUID and 6 oz/gal (44.94 g/l) of CoMat 01-316 NICKEL STRIP POWDER. The procedure is given below.

       1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Add the necessary quantity of CoMat 01-315 NICKEL STRIP LIQUID.

       3. Stir to mix.

       4. Add the necessary quantity of CoMat 01-316 NICKEL STRIP POWDER.

       5. Fill the tank to its operating volume with tap water.

       6. Stir to mix.

       7. Increase the temperature of the solution to the temperature specified in the plating procedure. Mechanically agitate the solution to prevent overheating.

    2. Solution maintenance.

       1. Refer to the manufacturer's instructions.

45. SUBTASK 70-33-27-180-045 Make-up of Solution Code 69

    1. Solution Code 69 is superseded by Solution Code 70 (Step).

46. SUBTASK 70-33-27-180-046 Make-up of Solution Code 70

    1. Solution Code 70 is made up with 200 parts by volume of CoMat 01-099 HYDROCHLORIC ACID and 1 part by volume of CoMat 01-196 INHIBITOR FOR HYDROCHLORICACID. The procedure is given below.

       1. Slowly and cautiously fill the tank to operating level with CoMat 01-099 HYDROCHLORIC ACID adding one gallon of CoMat 01-196 INHIBITOR FOR HYDROCHLORICACID for every 200 gallons of acid.

       2. Stir to mix.

47. SUBTASK 70-33-27-180-047 Make-up of Solution Code 71

    1. This subtask is deleted.

48. SUBTASK 70-33-27-180-048 Make-up of Solution Code 81

    1. This subtask is deleted.

49. SUBTASK 70-33-27-180-049 Make-up of Solution Code 82

    1. Solution Code 82 is made up with 100 percent by volume of CoMat 01-363 HYDROCHLORIC ACID (HCl),REAGENT GRADE with operating limits of 70 to 100 percent by volume. The make-up procedure is given below.

       1. Slowly and carefully fill the tank to its operating level with CoMat 01-363 HYDROCHLORIC ACID (HCl),REAGENT GRADE.

50. SUBTASK 70-33-27-180-050 Make-up of Solution Code 83

    1. Solution Code 83 is made up with:

       1. 5 gallon (18.9 l) of CoMat 01-433 DISTILLED OR DEIONIZEDWATER or CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER or tap water.

       2. 2.1 lbs (0.95 kg) of CoMat 01-431 ROCHELLE SALT.

    2. The make-up procedure for Solution Code 83 is given below.

       1. Fill the tank to its operating level with CoMat 01-433 DISTILLED OR DEIONIZEDWATER, or CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER or tap water.

       2. Add the necessary amount of CoMat 01-431 ROCHELLE SALT.

          NOTE

          No additions to this solution are permitted.

       3. Stir to mix.

51. SUBTASK 70-33-27-180-051 Make-up of Solution Code 84

    1. Solution Code 84 is made up with:

       1. 7 oz/gal (52.5 g/l) of CoMat 01-309 COPPER SULFATE (CuSO4),HYDRATED.

       2. 7 oz/gal (52.5 g/l) of CoMat 01-314 SODIUM HYDROXIDE (NaOH), REAGENT GRADE (SOLID).

       3. 24 oz/gal (180 g/l) of CoMat 01-431 ROCHELLE SALT with the operating limits of 15 to 27 oz/gal (135.5 to 202.5 g/l).

       4. CoMat 01-433 DISTILLED OR DEIONIZEDWATER or CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER or tap water as required.

    2. The make-up procedure for Solution Code 84 is given below.

       1. Fill the tank to its operating level with CoMat 01-433 DISTILLED OR DEIONIZEDWATER or CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER or tap water.

       2. Slowly and carefully add the necessary amount of CoMat 01-314 SODIUM HYDROXIDE (NaOH), REAGENT GRADE (SOLID).

       3. Stir to dissolve.

       4. Add the necessary amount of CoMat 01-431 ROCHELLE SALT.

       5. Stir to dissolve.

       6. Add the necessary amount of CoMat 01-309 COPPER SULFATE (CuSO4),HYDRATED.

       7. Increase the temperature of the solution to 115 to 125 deg F (46 to 52 deg C) until all salts are dissolved.

    3. Solution maintenance.

       1. Keep the solution at a pH value of 11 to 14, and 1.0 to 2.0 oz/gal (7.5 to 15 g/l) of a copper metal in solution.

52. SUBTASK 70-33-27-180-052 Make-up of Solution Code 85

    1. Deleted.

53. SUBTASK 70-33-27-180-053 Make-up of Solution Code 86

    1. Solution Code 86 is made up with:

       1. CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER.

       2. 6.5 gal/100 gal (24.6 l/378.5 l) of CoMat 03-356 ELECTROLESS Ni SOURCE/REPLENISHER.

       3. 15 gal/100 gal (56.8 l/378.5 l) of CoMat 03-357 ELECTROLESS Ni COMPLEXER/BUFFER.

       4. CoMat 03-358 ELECTROLESS Ni REDUCER/pHCONTROL as necessary raise pH.

          NOTE

          Plate as deposited must contain 7.0 to 12.5 percent phosphorus.

       5. CoMat 01-320 SULFURIC ACID (C.P.) as necessary to lower pH.

    2. The make-up procedure for Solution Code 86 is given below.

       1. Flush tank fully with CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER.

       2. Fill 1/2 of operating volume of tank with CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER.

       3. While you stir add the necessary amount of CoMat 03-356 ELECTROLESS Ni SOURCE/REPLENISHER and mix well.

       4. While you stir add the necessary amount of CoMat 03-357 ELECTROLESS Ni COMPLEXER/BUFFER and mix well.

       5. Fill tank to operating volume with CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER and mix well.

       6. Check pH for a value of 4.5 to 5.5.

       7. Adjust pH as necessary with CoMat 03-358 ELECTROLESS Ni REDUCER/pHCONTROL to raise pH or CoMat 01-320 SULFURIC ACID to lower pH.

       8. Increase the temperature of the solution to operating temperature specified in plating procedure. Shake the solution while heating to prevent localized overheating.

    3. Solution maintenance.

       NOTE

       1. To prevent breakdown of solution components, do not keep the bath at operating temperature longer than necessary if work is not being processed.

       2. Continuous agitation is necessary as you increase the temperature of the solution and while it is in use. Use clean, mild air or mechanical agitation. The rate of agitation can have an effect on the deposition rate.

       3. Continuous filtration is recommended for optimum results. Use periodic filtration if continuous filtration is not possible.

       1. To keep the solution, refer to the manufacturer's instructions.

54. SUBTASK 70-33-27-180-054 Make-up of Solution Code 87

    1. Solution Code 87 is made up with:

       1. Two-thirds by volume of CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER.

       2. 6 gal/100 gal (22.7 l /378.5 l) of CoMat 03-353 ELECTROLESS Ni PLATINGSOLUTION.

       3. 18 gal/100 gal (67.9 l/378.5 l) of CoMat 03-354 ELECTROLESS Ni PLATINGSOLUTION.

       4. CoMat 03-355 ELECTROLESS Ni PLATINGSOLUTION when necessary to replenish the solution.

       5. CoMat 01-306 AMMONIUM HYDROXIDE (NH4OH),CONCENTRATED or CoMat 01-432 POTASSIUM CARBONATE to raise the pH.

       6. CoMat 01-320 SULFURIC ACID to lower the pH.

    2. The make-up procedure for Solution Code 87 is given below:

       1. Flush tank fully with CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER.

       2. Fill the tank to approximately two-thirds of operating volume with CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER.

       3. Add the necessary amounts of CoMat 03-353 ELECTROLESS Ni PLATINGSOLUTION and CoMat 03-354 ELECTROLESS Ni PLATINGSOLUTION A and B with air or mechanical agitation.

       4. Fill the remaining operating volume of the tank with CoMat 01-282 ACTIVATED CARBON (GRANULAR).

       5. Check pH for a value of 4.8 to 5.2.

       6. Adjust pH as necessary with CoMat 01-306 AMMONIUM HYDROXIDE (NH4OH),CONCENTRATED or CoMat 01-432 POTASSIUM CARBONATE to raise the pH, or CoMat 01-320 SULFURIC ACID to lower the pH.

       7. Increase the temperature of the solution to the operating temperature specified in plating procedure. Stir the solution while heating to prevent localized overheating.

    3. Solution maintenance.

       NOTE

       1. The plate as deposited must contain 7.0 to 12.5 percent phosphorus.

       2. To prevent breakdown of reducer component, do not keep the bath at the operating temperature longer than necessary if work is not being processed.

       3. Continuous filtration of the solution, while in operation, is recommended. Use periodic filtration if continuous filtration is not possible.

       4. Replenish nickel metal content when below the operation limit. Nickel metal in solution must be 0.7 to 0.8 oz/gal (5.25 to 6.0 g/l).

       1. To keep the solution, refer to the manufacturer's instructions.

55. SUBTASK 70-33-27-180-055 Make-up of Solution Code 88

    1. Solution Code 88 is made up with 28 oz.wt/gal (210 g/l) of CoMat 01-256 CHROMIC ACID FLAKES with the operating limits of 25 to 30 oz.wt/gal (187.5 to 225 g/l). The procedure is given below.

       1. Fill the tank to approximately 1/2 (50 percent) of the operating volume of the tank with tap water.

       2. Increase the temperature of the water to 115 to 135 deg F (46 to 57 deg C).

       3. Slowly and carefully add the necessary amount of CoMat 01-256 CHROMIC ACID FLAKES.

       4. Stir to dissolve.

       5. Fill to approximately 7/8 (87 percent) of the operating volume of the tank with tap water.

       6. Stir to mix.

       7. Increase the temperature of the solution to the temperature specified in the procedure.

       8. Fill the remaining operating volume of the tank with tap water and keep the temperature specified in the procedure.

56. SUBTASK 70-33-27-180-056-001 Make-up of Solution Code 89

    1. A new solution of Solution Code 89 is made up with 55 gal of CoMat 03-336 HIGH SPEED CHROMIUM CONVERSIONSOL to 100 gal of tap water. The operating limits are 31 to 35 oz.wt/gal (232.5 to 262.5 g/l) of chromic acid and 0.34 to 0.39 oz.wt/gal (2.550 to 2.925 g/l) of sulfate.

       CoMat 01-043 SULFURIC ACID H2SO4 or CoMat 01-320 SULFURIC ACID and CoMat 03-338 HIGH SPEED CHROM. REPLENISHERSOLution have to be added as necessary, to adjust the solution to the operational limits. The procedure is given below.

       1. Fill 25 percent of the operating volume of the tank with tap water.

       2. Increase the temperature of the water to 115 to 135 deg F (46 to 57 deg C).

       3. Slowly and carefully add the required amount of CoMat 03-336 HIGH SPEED CHROMIUM CONVERSIONSOL high speed chromium make-up solution.

       4. Stir to mix.

       5. Fill to 7/8 of the operating volume of the tank with tap water.

       6. Stir to mix.

       7. Increase the temperature of the solution to the temperature specified in the plating procedure.

       8. Fill the remaining operating volume of the tank with tap water and maintain temperature specified in the procedure.

       9. Stir to mix.

       10. Slowly and carefully add the necessary amount of CoMat 01-043 SULFURIC ACID H2SO4 or CoMat 01-320 SULFURIC ACID to adjust the solution to the operational limits.

       11. Stir to mix.

57. SUBTASK 70-33-27-180-056-002 Make-up of Solution Code 89 (Alternative)

    1. The alternative Solution Code 89 can be converted from Solution Code 42 (Refer to Step for make-up) with 2 gal of CoMat 03-337 HIGH SPEED CHROMIUM CONVERSIONSOLution added to 100 gallons of Solution Code 42. The operating limits are 31 to 35 oz.wt/gal (232.5 to 262.5 g/l) of chromic acid and 0.34 to 0.39 oz.wt/gal (2.550 to 2.925 g/l) of sulfate.

       CoMat 03-338 HIGH SPEED CHROM. REPLENISHERSOL must be added as necessary, to adjust the solution to the operational limits. The procedure is given below.

       1. Fill 50 percent of the operating volume of the tank with Solution Code 42.

       2. Increase the temperature of the solution to 115 to 135 deg F (46 to 57 deg C).

       3. Slowly and carefully add the necessary amount of CoMat 03-337 HIGH SPEED CHROMIUM CONVERSIONSOL.

       4. Stir to mix.

       5. Fill to 7/8 of the operating volume of the tank with Solution Code 42.

       6. Stir to mix.

       7. Increase the temperature of the solution to the temperature specified in the plating procedure.

       8. Fill the remaining operating volume of the tank with Solution Code 42 and maintain temperature specified in the plating procedure.

       9. Stir to mix.

    2. Solution maintenance.

       1. To replenish the solution, make chromic acid additions with CoMat 03-338 HIGH SPEED CHROM. REPLENISHERSOL.

58. SUBTASK 70-33-27-180-057 Make-up of Solution Code 90

    NOTE

    1. This solution has no operating limits. Discard the solution when the stripping rate exceeds the maximum immersion time in the stripping procedure.

    2. It is permitted to use CoMat 01-219 ACID ADDITION AGENT at the above concentration when the parts to be stripped are soiled or oily. The use of wetting agent is not necessary.

    1. Solution Code 90 is made up with 75 percent by volume of CoMat 01-099 HYDROCHLORIC ACID and 0.5 percent by volume of CoMat 01-219 ACID ADDITION AGENT (if necessary).

       1. Totally empty the tank of all liquid and solids and slowly and carefully rinse out the tank with water.

       2. Add 20 percent of the operating volume of the tank with water.

       3. Fill the tank to 75 percent of the operating level with CoMat 01-099 HYDROCHLORIC ACID slowly and carefully.

       4. Stir carefully to mix.

       5. Slowly and carefully add the specified amount of CoMat 01-219 ACID ADDITION AGENT, if necessary.

       6. Slowly and carefully fill the tank with water to 100 percent of its operating level.

       7. Stir carefully to mix.

    2. 
       WARNING
       YOU MUST BE CAREFUL AT ALL TIMES TO PREVENT SPATTERING OF THE SOLUTION ON HANDS OR CLOTHING.

       Solution maintenance.

       NOTE

       1. The stripping action of Solution Code 90 decreases as the metal load increases. At approximately 12 g/l total dissolved metal, the stripping is unsatisfactorily slow.

       1. The hydrochloric acid concentration does not significantly affect the stripping rate and is acceptable from approximately 55-100 percent of CoMat 01-099 HYDROCHLORIC ACID.

       1. Add concentrated CoMat 01-099 HYDROCHLORIC ACID to maintain solution level.

59. SUBTASK 70-33-27-180-058 Make-up of Solution Code 102

    1. Solution Code 102 is made up with 25 oz/gal (187.5 g/l) of CoMat 01-030 SODIUM CARBONATE Na2CO3 and 10 oz/gal (75 g/l) of CoMat 01-451 SODIUM TARTRATE. The procedure is given below.

       1. Fill the tank to 50 percent of its operating volume with tap water.

       2. Add the necessary amount of CoMat 01-030 SODIUM CARBONATE Na2CO3.

       3. Stir to dissolve.

       4. Add the necessary amount of CoMat 01-451 SODIUM TARTRATE.

       5. Stir to dissolve.

       6. Fill the remaining operating volume of the tank with tap water.

       7. Stir to mix.

    2. Solution maintenance.

       1. Discard the solution when the rate of stripping falls below an economical level.

60. SUBTASK 70-33-27-180-059 Make-up of Solution Code 118

    1. Solution Code 118 is made up with 50 percent by volume of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE and 50 percent by volume of CoMat 01-474 PHOSPHORIC ACID, INHIBITED. The procedure is given below.

       1. Fill 50 percent of the operating volume of the tank with CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE.

       2. Slowly and carefully fill the remaining operating volume of the tank with CoMat 01-474 PHOSPHORIC ACID, INHIBITED.

       3. Stir to mix.

61. SUBTASK 70-33-27-180-060 Make-up of Solution Code 135

    1. Solution Code 135 is made with 8 to 12 oz.wt/gal (60 to 90 g/l) of CoMat 01-022 SODIUM HYDROXIDE NaOH (SOLID). The procedure is given below.

       1. Fill 50 percent of the operating volume of the tank with clean cold tap water.

       2. Slowly and carefully add the necessary amount of CoMat 01-022 SODIUM HYDROXIDE NaOH (SOLID).

       3. Stir to mix.

       4. Fill the tank to 88 percent of its operating volume with clean cold tap water.

       5. Stir to mix.

       6. Increase the temperature of the solution to the temperature specified in the plating procedure.

       7. Add the remaining water to fill the tank, keep the temperature, and stir to mix.

    2. Discard the solution when the stripping time becomes too long.

62. SUBTASK 70-33-27-180-061 Make-up of Solution Code 136

    1. Deleted.

63. SUBTASK 70-33-27-180-062 Make-up of Solution Code 137

    1. Solution Code 137 is made with 16 oz.wt/gal (120 g/l) of CoMat 01-430 CLEANER ELECTROLYTIC (HEAVYDUTY) with operating limits of 12 to 20 oz.wt/gal (90 to 150 g/l). The procedure is given below.

       1. Fill 50 percent of the operating volume of the tank with clean cold tap water.

       2. Increase the temperature of the water to 100 to 120 deg F (38 to 49 deg C).

       3. Slowly and carefully add the necessary amount of CoMat 01-430 CLEANER ELECTROLYTIC (HEAVYDUTY).

       4. Stir to dissolve.

       5. Fill the tank with tap water to 88 percent of its operating volume.

       6. Stir to mix.

       7. Increase the temperature of the solution to 120 to 140 deg F (49 to 60 deg C).

       8. Fill the remaining operating volume of the tank with tap water, keep the solution at the temperature specified in the plating procedure, and stir to mix.

64. SUBTASK 70-33-27-180-063 Make-up of Solution Code 138

    1. Solution Code 138 is made with 32 oz.wt/gal (240 g/l) of CoMat 01-256 CHROMIC ACID FLAKES with operating limits of 30 to 36 oz.wt/gal (225 to 270 g/l) and 3.8 ml/gal (1 ml/l) CoMat 01-043 SULFURIC ACID H2SO4 or CoMat 01-320 SULFURIC ACID with operating limits of 0.30 to 0.36 oz.wt/gal (2.25 to 2.70 g/l). The procedure is given below.

       1. Fill the tank to 50 percent of its operating volume with clean cold tap water.

       2. Increase the temperature of the water to 115 to 135 deg F (46 to 57 deg C).

       3. Slowly and carefully add the necessary amount of CoMat 01-256 CHROMIC ACID FLAKES.

          NOTE

          When you add chromic acid to a solution to be used for high speed plating, dissolve the chromic acid with water in a suitable container and filter through sufficient layers of CoMat 02-349 BLEACHED CHEESECLOTH (NEW) before you add the acid to the tank.

       4. Stir to dissolve.

       5. Slowly and carefully add the necessary amount of CoMat 01-043 SULFURIC ACID H2SO4 or CoMat 01-320 SULFURIC ACID to the tank.

       6. Fill the tank to 85 percent of its operating volume with tap water.

       7. Stir to mix.

       8. Increase the temperature of the solution to 115 to 135 deg F 46 to 57 deg C).

       9. Fill the remaining operating volume of the tank with tap water, keep the solution at the temperature specified in the plating procedure, and stir to mix.

65. SUBTASK 70-33-27-180-064 Make-up of Solution Code 154

    1. The make-up for this solution is moved to Step to place in number sequence.

66. SUBTASK 70-33-27-180-065 Make-up of Solution Code 150

    1. Material Requirements.

       Table 5. Option 1 - Uses 70 percent Hydrofluoric acid

       Material	Make-up	Operating Limits
       CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE	14% by Volume	8 - 16% by Volume
       70% CoMat 01-132 HYDROFLUORIC ACID HF	9% by Volume	3 - 10% by Volume
       CoMat 01-183 WETTING AGENT FOR ACIDCLEANER	0.05oz.wt/gal (0.38 g/l)	Add as necessary
       Dissolved Titanium Metal	None	30g/l Maximum

       Table 6. Option 2 - Uses 49 percent Hydrofluoric acid

       Material	Make-up	Operating Limits
       CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE	14% by Volume	8 - 16% by Volume
       49% CoMat 01-510 HYDROFLUORIC ACID	12% by Volume	4.3 - 14.3% by Volume
       CoMat 01-183 WETTING AGENT FOR ACIDCLEANER	0.05oz.wt/gal (0.38 g/l)	Add as necessary.
       Dissolved Titanium Metal	None	30g/l Maximum

       Table 7. Option 3 - Nitric-Hydrofluoric acid mixture

       Material		Make-up	Operating Limits
       CoMat 01-560 NITRIC ACID - HYDROFLUORICACID MIXTURE:		26% by Volume
       	Nitric Acid		8 - 16% by Volume
       	Hydrofluoric Acid (49%)		4.3 - 14.3% by Volume
       CoMat 01-183 WETTING AGENT FOR ACIDCLEANER		0.05 oz.wt/gal (0.38 g/l)	Add as necessary.
       Dissolved Titanium Metal		None	30g/l Maximum

    2. Preparation.

       Prepare solutions as follows:

       NOTE

       This preparation contains three options to use to make up Solution Code 150. Two use concentrations of Hydrofluoric Acid (70% or 49%) and one uses a pre-mixed solution of Nitric and Hydrofluoric Acids. Be sure to examine the label on the container for the CoMat number and concentration before you add the Hydrofluoric Acid to the solution.

       1. Fill the tank to approximately 50% of the operating volume of tank with tap water.

       2. For Option 1 and Option 2 mixtures:

          1. Slowly and carefully add the necessary amount of (CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE).

          2. Stir to mix.

          3. Slowly and carefully add the necessary amount of (CoMat 01-132 HYDROFLUORIC ACID HF or CoMat 01-510 HYDROFLUORIC ACID).

          4. Stir to mix.

       3. For Option 3 mixtures:

          1. Slowly and carefully add the necessary amount of (CoMat 01-560 NITRIC ACID - HYDROFLUORICACID MIXTURE).

          2. Stir to mix.

       4. Fill the remaining operating volume of the tank with tap water.

       5. Carefully stir to mix.

       6. Add the necessary amount of (CoMat 01-183 WETTING AGENT FOR ACIDCLEANER).

       7. Carefully stir to mix.

67. SUBTASK 70-33-27-180-066 Make-up of Solution Code 151

    1. Solution Code 151 is made up of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE, CoMat 01-132 HYDROFLUORIC ACID HF or CoMat 01-510 HYDROFLUORIC ACIDas follows:

       Material	Make-up	Operating Limits
       CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE	70% by Volume	65 - 85% by Volume
       70% CoMat 01-132 HYDROFLUORIC ACID HF	15% by Volume	10 - 20% by Volume
       OR
       49% CoMat 01-510 HYDROFLUORIC ACID	20% by Volume	15 - 30% by Volume

    2. Preparation.

       Prepare the solution as follows:

       NOTE

       This preparation contains the option to use one of two concentrations of Hydrofluoric Acid (70% or 49%). Be sure to examine the label on the container for the CoMat number and concentration before you add the Hydrofluoric Acid to the solution.

       1. Fill tank to 10% of its operating volume with CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER or tap water.

       2. Slowly and carefully add the necessary amount of (CoMat 01-132 HYDROFLUORIC ACID HF or CoMat 01-510 HYDROFLUORIC ACID).

       3. Slowly and carefully add the necessary amount of (CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE).

       4. If necessary, bring the tank to 100% of its operating volume with water.

       5. Carefully stir the contents of the tank to mix fully.

68. SUBTASK 70-33-27-180-067 Make-up of Solution Code 152 (Hydrochloric-Hydrofluoric Acid)

    1. Solution Code 152 is made up of CoMat 01-099 HYDROCHLORIC ACID or CoMat 01-363 HYDROCHLORIC ACID (HCl),REAGENT GRADE and CoMat 01-132 HYDROFLUORIC ACID HF or CoMat 01-510 HYDROFLUORIC ACID as follows:

       Material	Make-up	Operating Limits
       CoMat 01-099 HYDROCHLORIC ACID	75% by Volume
       OR
       CoMat 01-363 HYDROCHLORIC ACID (HCl),REAGENT GRADE	75% by Volume
       70% CoMat 01-132 HYDROFLUORIC ACID HF	0.3% by Volume
       OR
       49% CoMat 01-510 HYDROFLUORIC ACID	0.45% by Volume

    2. Preparation.

       Prepare the solution as follows:

       NOTE

       If parts do not gas within five seconds of immersion in Solution Code 152, discard the old solution and make up a new solution.

       NOTE

       This preparation contains the option to use one of two concentrations of Hydrofluoric Acid (70% or 49%). Be sure to examine the label on the container for the CoMat number and concentration before you add the Hydrofluoric Acid to the solution.

       .

       1. Fill tank to 25% of its operating volume with CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER or tap water.

       2. Slowly and carefully add the necessary amount of (CoMat 01-132 HYDROFLUORIC ACID HF or CoMat 01-510 HYDROFLUORIC ACID).

       3. Slowly and carefully add the necessary amount of (CoMat 01-099 HYDROCHLORIC ACID or CoMat 01-363 HYDROCHLORIC ACID (HCl),REAGENT GRADE).

       4. Carefully bring the tank to 100% of its volume with tap water or (CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER).

       5. Carefully stir the contents of the tank to mix fully.

69. SUBTASK 70-33-27-180-068 Make-up of Solution Code 153 (Electroless Nickel Plating Solution)

    1. Deleted.

70. SUBTASK 70-33-27-180-069 Make-up of Solution Code 154

    1. Material Requirements.

       Solution Code 154 is made with 32 oz.wt/gal (240 g/l) of CoMat 01-511 Cleaner- Electrolytic,Cyanide-type (phosphate -free) with operating limits of 30 to 34 oz.wt/gal (225 to 255 g/l) and 6 to 8 oz.wt/gal (45 to 60 g/l) of CoMat 01-063 SODIUM CYANIDE NaCN. The procedure is given below.

       1. Fill 50 percent of the operating volume of the tank with clean tap water.

       2. Increase the temperature of the water to 100 to 120 deg F (38 to 49 deg C).

       3. Slowly and carefully add the necessary amount of CoMat 01-511 Cleaner- Electrolytic,Cyanide-type (phosphate -free). Stir to dissolve.

       4. Slowly and carefully add the necessary amount of CoMat 01-063 SODIUM CYANIDE NaCN. Stir to mix.

       5. Fill the tank with tap water to 85 percent of its operating volume and stir to mix.

       6. Increase the temperature of the solution to 110 to 130 deg F (43 to 54 deg C).

       7. Fill the remaining operating volume of the tank with tap water. Keep the solution at the temperature specified in the plating procedure and stir to mix.

71. SUBTASK 70-33-27-180-070 Electroless Nickel Plating Solution (Solution Code 155)

    1. Material Requirements.

       Material	Make-up	Operating Limits
       CoMat 01-537 Electroless Nickel Plating Solution A	6 percent by Volume
       CoMat 01-538 Electroless Nickel Plating Solution B	15 percent by Volume
       CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER	79 percent by Volume
       pH		4.4 to 5.2
       Nickel Metal in Solution		0.65 to 0.85 oz wt/gal (4.88 to 6.38 g/l)
       CoMat 01-306 AMMONIUM HYDROXIDE (NH4OH),CONCENTRATED or CoMat 01-432 POTASSIUM CARBONATE		As necessary to raise pH
       CoMat 01-320 SULFURIC ACID		As necessary to lower pH
       CoMat 01-576 ELECTROLESS NICKEL REPLENISHER SOLUTION		As necessary for the manufacturer's solution maintenance instructions

       NOTE

       The electroless nickel plate as-deposited must contain 7.0 to 12.5 percent phosphorus. To prevent the breakdown of the reducer component, do not keep the bath at the operating temperature longer than necessary, if work is not being processed.

       NOTE

       Continuous filtration of the solution is necessary while in operation.

       NOTE

       It is necessary to replenish the nickel metal content when it is below the operating limit.

    2. Preparation.

       1. Flush the tank fully with CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER.

       2. Fill the tank fully to one-half of the operating volume with CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER.

       3. Add the necessary amounts of CoMat 01-537 Electroless Nickel Plating Solution A and CoMat 01-538 Electroless Nickel Plating Solution B. Air agitate or mechanically agitate the solution as you add the CoMat 01-537 Electroless Nickel Plating Solution A and CoMat 01-538 Electroless Nickel Plating Solution B.

       4. Fill the tank to its operating volume with CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER, and agitate (shake) the solution to mix.

       5. Do a check of the pH and adjust the pH of the solution by the manufacturer's instructions.

          1. Use CoMat 01-306 AMMONIUM HYDROXIDE (NH4OH),CONCENTRATED or CoMat 01-432 POTASSIUM CARBONATE to raise the pH.

          2. Use CoMat 01-320 SULFURIC ACID to lower the pH.

       6. Increase the temperature of the solution to the temperature specified in the plating procedure and agitate (shake) the solution to prevent localized overheating.

    3. Solution Maintenance.

       1. Follow the manufacturer's instructions to keep Solution Code 155.

72. SUBTASK 70-33-27-180-071 Alkali Smut Removal Solution (Solution Code 156)

    1. Material Requirements.

       Material	Make-up	Operating Limits
       CoMat 01-539 ALKALI SMUT REMOVAL COMPOUND	16 oz wt/gal (120 g/l)	12 to 16 oz wt/gal (90 to 120 g/l)
       CoMat 01-063 SODIUM CYANIDE NaCN	16 oz wt/gal (120 g/l)	8 to 16 oz wt/gal (60 to 120 g/l)

    2. 
       WARNING
       SOLUTION CODE 156 (ALKALI SMUT REMOVAL SOLUTION) IS EXTREMELY POISONOUS AND WILL CAUSE CAUSTIC BURNS. GOOD VENTILATION IS NECESSARY. BE SURE THERE IS NO PHYSICAL CONTACT. WEAR PROTECTIVE CLOTHING.

       Preparation.

       1. Fill the tank to 50 percent of the operating volume with tap water.

       2. Slowly and carefully add the necessary amount of CoMat 01-539 ALKALI SMUT REMOVAL COMPOUND. Stir to dissolve.

       3. 1. Let the solution temperature decrease to below 130 deg F (54 deg C).

          2. 

             WARNING

             CYANIDE CAN BE FATALLY POISONOUS. PREVENT CONTACT WITH SKIN OR CLOTHING. GOOD VENTILATION IS NECESSARY.

             Slowly and carefully add the necessary amount of CoMat 01-063 SODIUM CYANIDE NaCN. Stir to dissolve.

          3. Fill the remaining operating volume of the tank with tap water. Fully mix. Increase the temperature of the solution to the temperature specified in the repair procedure.

    3. Solution Maintenance.

       1. Follow the manufacturer's instructions to keep Solution Code 156.

73. SUBTASK 70-33-27-180-072 Braze Strip Solution (Solution Code 163)

    NOTE

    Solution Code 163 has two alternative make-ups; use either CoMat 01-549 BRAZE STRIP COMPOUND to make up Solution Code 163A or CoMat 01-550 BRAZE STRIP COMPOUND to make up Solution Code 163B.

    1. Solution Code 163A (Solution A and Part B).

       1. Solution Code 163A is made up with CoMat 01-549 BRAZE STRIP COMPOUND as follows:

          1. Solution A at 30 percent by volume.

          2. Part B at 1.25 lbs./gal. (150 g/l).

       2. Prepare Solution Code 163A as follows:

          1. Fill the tank to 50 percent of its operation volume with water.

          2. Increase the temperature of the water to 130 deg F (54 deg C).

          3. Slowly and carefully add the specified quantity of Solution A; mix fully.

          4. Increase the temperature of the solution to 130 deg F (54 deg C).

          5. Add the specified quantity of Part B; fully mix to dissolve.

          6. Fill the tank with water to its operation volume, keep the solution at the temperature specified in the repair procedure, and fully mix.

    2. Solution Code 163B (Solution A and Solution B and Part C).

       1. Solution Code 163B is made up with CoMat 01-550 BRAZE STRIP COMPOUND as follows:

          1. Solution A at 30 percent by volume with operation limits at 22 to 33 percent by volume.

          2. Solution B at 20 percent by volume with operation limits of 14 to 22 percent by volume.

          3. Part C at 13.5 oz.wt/gal (101.2 g/l) with operation limits of 8 to 15 oz.wt/gal (60 to 112.5 g/l).

       2. Prepare Solution Code 163B as follows:

          1. Fill the tank to 50 percent of its operation volume with water.

          2. Slowly and carefully add the necessary quantity of Solution A; fully mix.

          3. Slowly and carefully add the necessary quantity of Solution B; fully mix.

          4. Slowly and carefully add the necessary quantity of Part C; fully mix to dissolve.

          5. Make sure that the tank is at its operation volume. If necessary, add water.

          6. Increase the temperature of the solution to the temperature specified by the repair procedure, fully mix, and keep the solution at this temperature.

    3. Solution Maintenance.

       1. Follow the manufacturer's instructions to keep either Solution 163A or Solution Code 163B.

74. SUBTASK 70-33-27-180-073 Braze Strip Solution (Solution Code 164)

    1. Solution Code 164 is made up with CoMat 01-551 BRAZE STRIP COMPOUND as follows:

       1. Solution A at 30 percent by volume with operation limits of 28 to 34 percent by volume.

       2. Part B at 18 oz.wt/gal (135 g/l) with operation limits of 16 to 20 oz.wt/gal (120 to 150 g/l).

    2. Prepare Solution Code 164 as follows:

       1. Fill the tank to 50 percent of its operation volume with water.

       2. Increase the temperature of the water to 130 deg F (54 deg C).

       3. Slowly and carefully add the specified quantity of Solution A; fully mix.

       4. Increase the temperature of the solution to 130 deg F (54 deg C).

       5. Add the specified quantity of Part B; fully mix to dissolve.

       6. Fill the tank with water to its operation volume, keep the solution at the temperature specified in the repair procedure, and fully mix.

    3. Solution Maintenance.

       1. Follow the manufacturer's instructions to keep Solution 164.

75. SUBTASK 70-33-27-180-074 Electrolytic Cleaner Solution (Noncyanide) (Solution Code 165)

    1. Material Requirements.

       Material	Make-up	Operating Limits
       CoMat 01-552 CLEANER, ELECTROLYTIC(NONCYANIDE)	12 oz.wt/gal (90 g/l)	6 to 12 oz.wt/gal (45 to 90 g/l)

    2. Preparation.

       1. Fill the tank with tap water to 50 percent of its operation volume.

       2. Increase the temperature of the water to 100 to 120 deg F (38 to 49 deg C).

       3. Slowly and carefully add the necessary amount of CoMat 01-552 CLEANER, ELECTROLYTIC(NONCYANIDE).

       4. Stir to dissolve.

       5. Increase the temperature of the solution to 110 to 120 deg F (43 to 49 deg C) while you stir.

       6. Fill the remaining operation volume of the tank with tap water; stir to mix. Keep the solution at the temperature specified in the plating procedure.

    3. Solution Maintenance.

       1. Follow the manufacturer's instructions to keep Solution 165.

76. SUBTASK 70-33-27-180-075 Nickel Strip Solution (Noncyanide)(Solution Code 166)

    1. Material Requirements.

       Material	Make-up	Operating Limits
       CoMat 01-453 NICKEL STRIP COMPOUND(NONCYANIDE)	2.5 lbs/gal (300 g/l)

    2. Preparation.

       1. Fill the tank with tap water to 50 percent of its operation volume; Increase the temperature of the water to 120 to 150 deg F (49 to 66 deg C).

       2. Slowly and carefully add the necessary amount of CoMat 01-453 NICKEL STRIP COMPOUND(NONCYANIDE) and mix fully until the powder dissolves.

       3. Fill the tank with water to its operation volume.

       4. Increase the temperature of the solution again to 120 to 150 deg F (49 to 66 deg C) while you stir.

    3. Solution Maintenance.

       1. Add water to the solution, as necessary, to replace the loss in the bath volume due to evaporation.

       2. Constant mechanical agitation is necessary during operation.

       3. Follow the manufacturer's instructions to keep Solution Code 166.

77. SUBTASK 70-33-27-180-076 Cadmium Strip Solution (Solution Code 167)

    1. This subtask is deleted.

78. SUBTASK 70-33-27-180-077 Electrolytic Cleaner Solution (Noncyanide) (Solution Code 169)

    1. Material Requirements.

       Material	Make-up	Operating Limits
       CoMat 01-369 ALKALINE RUST REMOVER	20 percent by volume	12 to 20 percent by volume

    2. Preparation.

       1. Fill the tank with water to 50 percent of its operation volume.

       2. Slowly and carefully add the necessary amount of CoMat 01-369 ALKALINE RUST REMOVER and stir to mix.

       3. Fill the tank with water to 100 percent of it operating volume and stir to mix.

       4. Heat the solution to the temperature specified in the plating process, keep the solution at the specified temperature, and stir to mix.

    3. Solution Maintenance.

       1. Follow the manufacturer's instructions to keep Solution Code 169.

79. SUBTASK 70-33-27-180-078 Sulfuric Acid Solution - 30 Percent (Solution Code 170)

    1. Material Requirements.

       Material	Make-up	Operating Limits
       CoMat 01-043 SULFURIC ACID H2SO4	32 percent by volume	30 to 33 percent by volume

    2. Preparation.

    3. 
       WARNING
       DO NOT ADD WATER TO CONCENTRATED SULFURIC ACID. SPATTERING OF ACID, WHICH WILL BE THE RESULT, CAN CAUSE DANGEROUS BURNS.

       1. Fill the tank with water to 68 percent of its operation volume.

       2. 

          WARNING

          THE SOLUTION WILL INCREASE IN TEMPERATURE WHEN YOU ADD THE ACID.

          Slowly and carefully fill the remaining volume of the tank with CoMat 01-043 SULFURIC ACID H2SO4.

       3. 

          WARNING

          THE SOLUTION WILL INCREASE IN TEMPERATURE WHEN YOU MIX THE ACID.

          Slowly and carefully stir to mix.

80. SUBTASK 70-33-27-180-079 Make-up of Solution Code 181 Dimethylglyoxime (DMGO) Indicator Solution

    1. Material Requirements.

       Material	Make-up	Operating Limits
       CoMat 01-580 DIMETHYLHLYOXIME (DMGO), REAGENT GRADE	10 g
       CoMat 01-306 AMMONIUM HYDROXIDE (NH4OH),CONCENTRATED	1 litre

    2. Preparation

       1. Add the necessary amount of CoMat 01-580 DIMETHYLHLYOXIME (DMGO), REAGENT GRADE to the necessary amount of CoMat 01-306 AMMONIUM HYDROXIDE (NH4OH),CONCENTRATED.

       2. Stir to mix.

81. SUBTASK 70-33-27-180-080 Silver Plate Stripper (Non-Cyanide) (Solution Code 203)

    1. Material Requirements

       Table 17.

       Material	Make-up	Operating Limits
       CoMat 01-587 Silver Plate Stripper (Non-Cyanide)	25 oz.wt/gal (187.5 g/l)	20 oz.wt/gal - 32 oz.wt/gal (150 g/l - 240 g/l)

    2. Preparation

       1. Fill the tank with clean water to 3/4 of the operating level.

       2. Slowly and carefully add the necessary amount of CoMat 01-587 Silver Plate Stripper (Non-Cyanide) while you stir the solution.

       3. Fill the tank with clean water to 100 percent of the operating level.

       4. Heat to the temperature specified in the TASK, stir to mix. Keep the solution at this temperature.

       5. Use mechanical methods to keep this solution in continuous movement.

    3. Solution Maintenance

       1. Follow the manufacturer's instructions to keep the solution.

82. SUBTASK 70-33-27-180-081 Silver Plate Stripper (Solution Code 204)

    1. Material Requirements

       Table 18.

       Material	Make-up	Operating Limits
       CoMat 01-022 SODIUM HYDROXIDE NaOH (SOLID)	1 oz.wt/gal (7.5 g/l)
       CoMat 01-079A TRI-SODIUM PHOSPHATE Na3PO4+12H2O	6 oz.wt/gal (45 g/l)
       Cyanide:
       CoMat 01-063 SODIUM CYANIDE NaCN	16 oz.wt/gal (120 g/l)
       or
       CoMat 01-107 POTASSIUM CYANIDE KCN95% MIN	21 oz.wt/gal (157.5 g/l)

    2. Preparation

       1. Fill 50 percent of operating volume of tank with tap water.

       2. Slowly and carefully, add the necessary amount of CoMat 01-022 SODIUM HYDROXIDE NaOH (SOLID) and stir.

       3. Slowly and carefully, add the necessary amount of CoMat 01-063 SODIUM CYANIDE NaCN or CoMat 01-107 POTASSIUM CYANIDE KCN95% MIN. Stir to dissolve and mix.

       4. Slowly and carefully, add the necessary amount of CoMat 01-079A TRI-SODIUM PHOSPHATE Na3PO4+12H2O, stir to dissolve and mix.

       5. Fill the remaining operating volume of the tank with tap water and stir to mix.