Table 1-3. Penetrant Procedure (Type I, Method A)

Table 1-4. Penetrant Procedure (Type I, Method B)

TM-1-1520-265-23 H-60 Helicopter Series Manual
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TM 1-1520-265-23 Table 1-3. Penetrant Procedure (Type I, Method A) Task Description a. Preparation of Part: Refer to Preparation of Part or Area for NDI, paragraph 1.4.4. b. Precleaning Procedure: Refer to TM 1-1500-344-23. c. Penetrant Application: The Penetrant may be applied by brushing, spraying, or dipping. d. Penetrant Dwell: Allow a minimum of 30 minutes dwell time to a maximum of 240 minutes. Extended dwell time may require rewetting of parts. e. Penetrant Removal/Rinse: Rinse the part by waterwash using a low-pressure spray (pressure not to exceed 20 PSI) and a temperature of 16°C to 38°C (60°F to 100°F). DO NOT OVERRINSE. f. Drying Operation: The parts should be dried in a circulating air dryer with a temperature range from 38°C to 60°C (1 00°F to 1 40°F). The time in the dryer should not exceed the time necessary to completely dry the surface of the parts. 9. Developer Application: The dry developer is sprayed or dusted lightly over the part to be inspected. Shake or blow off with low, oil-free air to remove excess developer. h. Inspect: Perform inspection under black light. i. Materials: Type I, Method A, Level 3 or 4 (water washable) Penetrant. 1-22

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