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, AND HEALTH HAZARD DATA; PRECAUTIONS FOR SAFE HANDLING; USE AND CONTROL MEASURES), AND ALSO TO TAKE LOCAL REGULATIONS INTO CONSIDERATION.

CAUTION

ALKALI DERUSTER SOLUTIONS MUST NOT BE USED ON ALUMINUM PARTS.

Procedure

1. SUBTASK 70-11-05-300-001 Preparation of the Parts

   1. If there is loose or powdery soil on the part, use a high pressure water spray unit to remove the loose or powdery soil from the part. Refer to SPM TASK 70-10-00-100-501 for high-pressure water spray unit (power washer) information.

   2. If there is grease or oil on the part, remove the grease of oil. Refer to SPM TASK 70-11-03-300-503.

2. SUBTASK 70-11-05-300-002 Remove the Paint and Clean the Areas That are Not Painted

   1. Soak in one of the following solutions at the specified temperature for the specified time.

      1. Solution Code 20 at 180 deg F to 200 deg F (82 deg C to 93 deg C) for 15 to 30 minutes.

      2. Solution Code 23 at 180 deg F to 200 deg F (82 deg C to 93 deg C) for 15 to 30 minutes.

      3. Solution Code 24 at 180 deg F to 200 deg F (82 deg C to 93 deg C) for 15 to 30 minutes.

      4. Solution Code 25 at 180 deg F to 200 deg F (82 deg C to 93 deg C) for 15 to 30 minutes.

      5. Solution Code 175 at 185 deg F to 195 deg F (85 deg C to 95 deg C) for 15 to 30 minutes.

3. SUBTASK 70-11-05-300-003 Pressure Flush the Part with Cold Water

   1. Pressure spray the part over the solution tank with cold water.

   2. Put the part fully in a cold water tank.

   3. Remove the part from the cold water, and pressure spray the part with cold water.

4. SUBTASK 70-11-05-300-004 Inspection of Part

   1. While the part is still wet, examine the part for smut.

   2. NOTE

      To make sure that the smut does not bond to the part after stripping paint, do not let the part dry while there is smut on the part.

      If there is smut on the part, do these steps while the part is still wet to make sure the smut does not bond to the part.

   3. Scrub/wipe the part with scrub pad or a tampico brush to remove the smut.

   4. Flush the part with a cold water pressure spray.

   5. If there is remaining paint on part surfaces, do this procedure again. If there is remaining paint on part surfaces, after you do the procedure again, replace the stripping solution.

   6. If there is remaining carbon or corrosion on part surfaces after you remove the paint, clean the part surfaces by SPM TASK 70-11-13-300-503.

5. SUBTASK 70-11-05-300-005 Flash Dry the Part With Hot water

   1. Put the part fully in hot water at a temperature of 150 deg F to 200 deg F (66 deg C to 93 deg C) until the temperature of the part increases sufficiently to flash dry.

      1. If the water on the part surface does not flash off when the part comes out of the hot water, then the time interval that the part stayed in the hot water was too short to increase the part temperature sufficiently.

   2. Remove the part from the hot water and flash dry.

6. SUBTASK 70-11-05-300-006 Plastic Blast

   1. If necessary, remove remaining smut by plastic blast SPM (TASK 70-12-07-120-501).

7. SUBTASK 70-11-05-300-007 Prevent Corrosion of the Part.

   1. Corrosion protect with SPM TASK 70-38-05-380-501 corrosion inhibitor.