Long wave ultraviolet or UV-A radiation (between 320 to 400 nm) is used for fluorescent inspections in magnetic particle and liquid penetrant examinations. The UV-A radiation is obtained from either fluorescent or high intensity discharge lamps that are stationary or portable. The commercially available UV-A lamps possess a large variation in intensity output that can cause a legitimate concern for possible health hazard. This draft reviews the nature of UV-A radiation emitted by these lights@ blacklight equipment@ acceptable UV dosage limits adopted by the American Conference of Governmental Industrial Hygienists (ACGIH) and the European Standards Committee for Nondestructive Testing@ and recommendation of proper practices when working with UV-A radiation.
SAE AIR4964-1998 history
2019SAE AIR4964-2019 Exposure Levels of UV Radiation in Nondestructive Inspection Processes
1998SAE AIR4964-1998 Exposure Levels of UV Radiation in Nondestructive Inspection Processes