Table 1-3. Penetrant Procedure (Type I, Method A)
Preparation of Part:
Refer to Preparation of Part or Area for.ND!, paragraph 1.4.4.
Refer to TM 1-1500-344-23.
The penetrant may be applied by brushing, spraying, or dipping.
Allow a minimum of 30 minutes dwell time to a maximum of 240 minutes. Extended
dwell time may require rewetting of parts.
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.
The parts should be dried in a circulating air dryer with a temperature range from 38C
to 60°C (100°F to 140
°F). The time in the dryer should not exceed the time
necessary to completely dry the surface of the parts.
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.
Perform inspection under black light.
Type I, Method A, Level 3 or 4 (water washable) Penetrant.