NDT ( PT ) Level II

A: Option A feels tidy but only adds two minutes for a 10°C drop, not the actual 8°C reduction. Option C is a classic over-application—developer time isn't part of penetrant dwell correction. Option D sounds safety-driven, but it's inventing a roughness factor that isn't in the written procedure, which breaks compliance. The linear correction gives 10 min + (8/5 ≈ 1.6, rounded up to 2) = 14 minutes.

A: Option A works on smooth parts but risks background on weld toes. Option C is valid in immersion lines, not hand-applied weld inspection. Option D exists in catalogs but sacrifices sensitivity and control. Fluorescent solvent-removable penetrant gives higher flaw contrast on stainless welds when UV is available.

A: Option B swaps Type I and Type II, a frequent memory slip. Option C gets Type I right but Method A, not C. Option D matches Method C but misses that Type I is fluorescent, not visible. ASTM E1417 coding locks Type I to fluorescent and Method C to solvent removable.

A: Option A ignores embedded oils that kill capillary action. Option B matters, but temperature limits don't fix contamination. Option D is a QA traceability check, not a pre-cleaning acceptance. Residual solvent or oil blocks penetrant entry, so evaporation and cleanliness are the gate.