Preliminary Requirements

Safety Requirements

WARNING

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

WARNING

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WARNING

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WARNING

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Procedure

1. SUBTASK 70-11-49-860-001 Equipment and Material

   1. Standard equipment - none

   2. Consumable materials.

      CoMat 01-007 ETHYL ALCOHOL C2H5OH (DENATURED)	Ethyl alcohol C2H5OH
      CoMat 01-031 ACETONE (CH3)2CO	Acetone (CH3)2CO
      CoMat 01-124 ISOPROPYL ALCOHOL	Isopropyl alcohol
      CoMat 01-393 ACETONE	Acetone
      CoMat 01-410 ISOPROPYL ALCOHOL, REAGENT GRADE	Isopropyl alcohol
      NOTE To identify the consumable materials, refer to the PCI.

2. SUBTASK 70-11-49-860-010 Testing of Cleaning Solutions

   1. General.

      1. This document gives the stock (part material) loss test procedure for cleaning solutions.

      2. This document specifies controls and tests for cleaning and preservation consumables that you use in a tank.

         NOTE

         Service-related corrosion is usually on local areas of the part. When cleaning solutions cause corrosive attack, the attack is on all surfaces of the part.

         NOTE

         The chemical properties of cleaning solutions can change if the solution temperature becomes higher than the specified operating temperature, and this can cause stock loss rates to increase on some metals. Thermostat malfunction or operator error can cause the solution temperature to become too high.

      3. Do the stock loss test of the cleaning solution when corrosion on parts after cleaning is different from the usual service related corrosion.

   2. Materials.

      1. Test panel materials for cleaning solution stock loss test are:

         1. AMS 5504 (12.5 percent Chromium) annealed stainless steel sheet stock.

         2. AMS 5508 (13Cr-2Ni-3W) annealed stainless steel sheet stock.

         3. AMS 5536 (Hastelloy X) nickel alloy sheet stock.

         4. AMS 4911 (6Al-4V) titanium alloy sheet stock to represent all titanium.

3. SUBTASK 70-11-49-180-001 Test Panel Material

   1. This subtask is Deleted.

4. SUBTASK 70-11-49-180-002 Prepare the Standard Test Panels For Cleaning Solution Stock Loss Test

   1. Make or purchase the standard test panels.

      1. To make the standard test panels, do the steps in the subsequent procedure:

         1. Cut panels from the applicable sheet stock materials to: 5 inches plus or minus 0.0625 (127.00 plus or minus 1.588 mm) long x 2 plus or minus 0.0625 inches (50.8 plus or minus 1.588 mm) x approximately 0.040 inch (1.016 mm) or 0.060 inch (1.524 mm) thick.

            1. Refer to Step for the panel materials and coatings that are necessary for the cleaning solution.

            2. Use AMS 5504 stainless steel sheet stock for the necessary coated test panels.

         2. Drill or punch a 0.125 in. (3.175 mm) hole in each panel to make it possible to hang the panels.

         3. Deburr edges after cutting, drilling, or punching.

      2. It is permitted to purchase the standard test panels.

         1. Refer to Step for the panel materials and coatings that are necessary for the cleaning solution.

         2. Use AMS 5504 stainless steel sheet stock for the necessary coated test panels.

         3. The subsequent list gives the part numbers for the standard test panels made of each sheet stock material:

            Material	Test Panel Part Number
            AMS 5504 Stainless Steel	PWA 37606
            AMS 5508 Stainless steel	PWA 37623
            AMS 5536 Nickel Alloy	PWA 37611
            AMS 4911 Titanium Alloy	PWA 37604

            These test panels are available from:

            1. Supplier (CAGE) Code 6T384.

               Scientific Material International (SMI), Inc.

               12219 SW 131st Avenue

               Miami

               FL 33186-6401

               USA

               Tel: 1-305-971-7047

               Fax: 1-305-971-7048

      3. As an alternative, it is permitted to use a plain uncoated test panel from a completed stock loss test again for a subsequent stock loss test if the test panel agrees with the requirements in Step (Criteria To Use Test Panels Again). It is necessary to do the abrasive blast step below to prepare the panel before you do the subsequent stock loss test.

   2. For the necessary coated test panels, electro-plate the applicable coatings for the stock loss test on AMS 5504 stainless steel standard test panels.

      1. Refer to Step for the coatings that are necessary for the cleaning solution.

      2. Refer to Step for the electro-plate procedure and coating thickness.

   3. Abrasive blast each panel all over by one of these procedures:

      1. SPM TASK 70-12-08-300-503.

      2. SPM TASK 70-12-11-300-503.

      3. SPM TASK 70-12-09-120-501.

      4. SPM TASK 70-12-06-120-501.

5. SUBTASK 70-11-49-300-001 Apply a Layer to the Test Panels for Stock Loss Test

   1. Use AMS 5504 steel panels plated with nickel 0.0018 in. to 0.0022 in. (0.046 mm to 0.056 mm) thick. Refer to SPM TASK 70-33-06-300-503.

6. SUBTASK 70-11-49-180-003 Cleaning Solution Stock Loss Test

   1. Prepare the necessary test panels. Refer to Step or Step.

   2. Remove the grease from the panels.

   3. Flush fully with one of the solvents in the subsequent list:

      1. CoMat 01-007 ETHYL ALCOHOL C2H5OH (DENATURED).

      2. CoMat 01-031 ACETONE (CH3)2CO.

      3. CoMat 01-124 ISOPROPYL ALCOHOL.

      4. CoMat 01-393 ACETONE.

      5. CoMat 01-410 ISOPROPYL ALCOHOL, REAGENT GRADE.

   4. Let the test panel dry in ambient air for 15 minutes minimum.

   5. Weigh the panel to the nearest milligram and record the weight.

   6. Hang the test panel in the cleaning solution 2.0 inches (50.8 mm) minimum below the surface of the cleaning solution.

      1. Use stainless steel wire to hang the test panel in the cleaning solution.

         NOTE

         Electrical connection between the test panel and the tank or other grounding source will cause a galvanic effect, which will cause the test result to not be accurate.

         NOTE

         If the test panel touches or is very near to the heater coils, the test result will not be accurate.

         1. Isolate stainless steel wire from electrical connection to the tank and other grounding sources, and do not let the test panel touch the sided or bottom of the tank.

      2. The solution must be at the maximum operation temperature specified in the applicable cleaning procedure.

      3. Use the same agitation that is usually used to agitate (that is, cause continuous movement of) the solution for the applicable cleaning procedure.

      4. Keep the test panel in the solution for the time specified in Step.

   7. Flush fully in cold water.

   8. Brush with a soft brush, or flush with a pressure spray of cold water.

   9. Flush fully in cold water.

   10. Flush fully in hot water.

   11. Flush fully with one of the solvents in the subsequent list:

       1. CoMat 01-007 ETHYL ALCOHOL C2H5OH (DENATURED).

       2. CoMat 01-031 ACETONE (CH3)2CO.

       3. CoMat 01-124 ISOPROPYL ALCOHOL.

       4. CoMat 01-393 ACETONE.

       5. CoMat 01-410 ISOPROPYL ALCOHOL, REAGENT GRADE.

   12. Let dry in ambient air for 15 minutes minimum.

   13. Weigh the panel again to the nearest milligram. Subtract this weight from the recorded weight of the panel to calculate the weight lost in the cleaning solution.

   14. Use the weight lost in the cleaning solution, the total surface area of the test panel and density of the panel material or coating (refer to Step) to calculate the stock loss in the cleaning solution. See Figure for the equation to calculate the stock loss.

7. SUBTASK 70-11-49-180-005 Procedure for Correction

   
   CAUTION
   CHEMICALS USED WITH THE CLEANING PROCEDURES WHICH REFER TO CONCENTRATIONS, CYCLE TIMES, AND OPERATION TEMPERATURES HAVE BEEN APPROVED AS SATISFACTORY TO BE APPLIED TO THE JET ENGINE PARTS SPECIFIED. IT IS THE RESPONSIBILITY OF THE OPERATOR TO MAKE SURE THAT THESE SPECIFICATIONS ARE FOLLOWED.

   1. If the stock loss is more than 0.05 mil, start the procedure for correction immediately. After correction of the cleaning solutions do the stock loss tests again before you start to clean the parts.

      1. In general, the solution maintenance recommendations of the material manufacturer will best identify the necessary corrective action.

         1. It is possible that replacement of the cleaning solution will be the only satisfactory procedure for corrections.

      2. If you add make-up material or water to do the procedure for correction, you must do the applicable chemical tests to keep the solution in the specified operating limits.

      3. For cleaning solutions that contain inhibitors, it is also important to make sure that the amount of corrosion inhibitor in the solution does not become too low.

8. SUBTASK 70-11-49-180-004 Criteria to Use Panels Again for Subsequent Stock Loss Tests

   1. Plain Uncoated Panels.

      1. If a plain uncoated panel shows no etching or pits after the stock loss test, it is permitted to use the again for subsequent stock loss tests.

         1. Do Step before you use the test panel for a subsequent stock loss test.

   2. Coated Panels.

   3. It is not permitted to use coated panels again for subsequent stock loss tests.

9. SUBTASK 70-11-49-180-006 Solution Testing Parameters

   NOTE

   Refer to the SPM TASK 70-11-48-110-501 for the solution make-up instructions.

   Solution Name (Specification)	Panel Material or Coating Layer	Applicable Cleaning Procedure (Note)	Time in Solution (In Minutes)
   Acidic Scale Conditioner Solution (Solution Code 91, 96, 119, 160)	AMS 5504 AMS 5508 AMS 5536	(1) (1) (1)	60 60 60
   Alkaline Permanganate Solution (Solution Code 100, 140, 161, 162, 168)	AMS 5504 AMS 5508 AMS 5536	(1) (1) (1)	60 60 60
   Alkaline Rust Remover Solution (Solution Code 20, 23, 24, 25, 97)	AMS 2416 AMS 5504 AMS 5508 AMS 5536 AMS 4911 AMS 4911	(2) (1) (2) (1) (2) (1) (2) (3) (4)	60 60 60 60 10 60
   				Alkaline Rust Remover Solution (Solution Code 175)	AMS 2416 AMS 5504 AMS 5508 AMS 5536	(2) (1) (2) (1) (2) (1) (2)	60 60 60 60
   				Alkaline Rust Remover Solution (Solution Code 106, 108, 109, 111)	AMS 4911	(4)	60
   				Caustic-Potassium Permanganate Descaling Solution (Solution Code 1)	AMS 5504 AMS 5508 AMS 5536	(1) (1) (1)	60 60 60
   				Inhibited Phosphoric Acid (Solution Code 14)	AMS 2424 AMS 5504 AMS 5508 AMS 5536	(1) (1) (1) (1)	60 60 60 60
   				Sodium Hydroxide Solution (11 percent) (Solution Code 51)	Refer to TASK 70-11-47-110-501, SUBTASK 70-11-47-180-035 for the Test Method.
   NOTE (1) SPM TASK 70-11-54-300-503. (2) SPM TASK 70-11-13-300-503. (3) SPM TASK 70-11-06-300-503, SUBTASK 70-11-06-300-002-A01. (4) SPM TASK 70-11-06-300-503, SUBTASK 70-11-06-300-002-A02.

10. SUBTASK 70-11-49-180-007 Material or Coating Densities

    	Material	Density g/ml
    	AMS 4911 Titanium	4.5
    	AMS 5504 Stainless Steel	7.8
    	AMS 5508 Stainless Steel	8.0
    	AMS 5536 Stainless Steel	8.2
    	AMS 2424 Nickel Plate	8.9

11. SUBTASK 70-11-49-180-008 Cleaning and Preservation Consumables

    1. Controls and tests for cleaning and preservation consumables that you can use in a tank:

       CoMat Number and Name		Frequency	Test and Requirements
       Deleted		Deleted	Deleted
       CoMat 10-061 STODDARD SOLVENT		Each 2 months	Specific Gravity: 0.775 to 0.805. Copper corrosion: ASTM B5 corrosion standard 1b maximum and no pitting.
       CoMat 12-027A CORROSION PREVENTIVE COMPOUND		Each 1 month	Copper corrosion: ASTM B5 corrosion standard 1b maximum and no pitting. Volatile content: 60 to 94 percent.

Figure: Calculate the material loss in the cleaning solution

Calculate the material loss in the cleaning solution