Solar Atmospheres of Western PA (SAWPA) has been certified for fluorescent liquid penetrant (FLP) inspection. The original certification resulted primarily from an audit of inspection work currently being performed on major aerospace structural parts. This renewed certification awarded to the Hermitage, Pa., plant covers a process where fluorescent light is used to check for cracks immediately following heat treating. A liquid penetrant is uniformly applied to the part, allowed to reside on the part for a pre-determined length of time, and then washed from the part. The part is then air dried by passing through a controlled-temperature dryer and slowly advanced through a darkroom, where fluorescent lighting and magnification are used to identify crack locations. Cracked parts are rejected, segregated and the customer notified.
SAWPA also recently passed, with merit status, a Nadcap heat-treating audit. This allows SAWPA to go 24 months before its next Nadcap heat-treating audit.