Table 1-5. Penetrant Procedure-Portable or Field Application (Type I, Method C)

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

Table 1-6. Penetrant Procedure (Type I, Method D)

TM-1-1520-265-23 H-60 Helicopter Series Manual
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TM 1-1520-265-23 Table 1-5. Penetrant Procedure-Portable or Field Application (Type I, Method C) 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: Apply penetrant either by brushing or spraying. In a confined area, apply with brush to prevent overspray. d. Penetrant Dwell: Allow a minimum of 30 minutes penetrant dwell time. In tem- perature below 16°C (60°F), refer to Nondestructive In- spection. Methods manual listed in Table 1-1 for dwell time compensations. e. Penetrant Removal: Wipe dry with a dry, lint-free cloth. Wipe down with a solvent- moistening cloth. Check area to be inspected with black light to be sure all surface penetrant has been removed be- fore applying developer. Do not spray cleaner directly onto part. f. Developer Application: Spray a light film of developer over area to be inspected. g. Inspect: Perform inspection under black light. Observe any obvious bleed-out as developer dries. Complete inspection after developer dwell time is complete. h. Materials: Type I, Method C, Level 3 or 4, Solvent - Removable Fluores- cent Dye Penetrant (Refer to Table 1-8). 1-24

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