Worker Protection, Decontamination, and Waste Handling
Respiratory and dermal protection
Use a fit-tested respirator with HEPA filters (P100). Half-mask APR for lower exposures; full-face or PAPR where higher protection or eye protection is needed; supplied-air for the highest exposures. Tight-fitting respirators require medical evaluation, fit testing, and no facial hair at the seal. Wear disposable coveralls with hood, booties, and gloves; tape cuffs; inspect for tears. Heat stress is a real hazard-use work/rest cycles and hydration.
Medical surveillance
OSHA requires medical surveillance for employees exposed above the PEL or required to wear a respirator for 30+ days/year: baseline and annual history, physical exam, chest X-ray, and pulmonary function testing. Keep records confidential and available to the worker. Surveillance does not replace exposure control.
Decontamination sequence
Use a three-stage unit: dirty room, shower, clean room. In the dirty room, HEPA-vacuum the suit, remove it and booties, and bag them as asbestos waste. Shower before entering the clean room. Remove the respirator only after showering and only in the clean room-never in the dirty room. Do not eat, drink, smoke, or chew in the regulated area. Street clothes stay in the clean room; contaminated clothing never goes home.
Waste handling
Keep waste wet, double-bag it in labeled 6-mil bags, seal each bag, and decontaminate the outer bag. Use rigid containers for sharp or heavy debris. Labels must identify asbestos, the generator, and the hazard. Transport with a waste shipment record/manifest to a landfill permitted to accept asbestos; NESHAP prohibits visible emissions and requires covering loads. Return signed manifests to the project file.
Worked example
A worker leaves the dirty room wearing his respirator, walks past the shower, and carries bags to the truck. Errors: he should HEPA-vacuum and remove the suit in the dirty room, shower, and remove the respirator in the clean room; bags must be double-bagged, sealed, labeled, and the exterior wiped clean. His route also spreads contamination.
Traps
A beard breaks a tight seal. An N95 is not a HEPA respirator. A PAPR still needs fit testing if tight-fitting. Waste cannot go in a dumpster. One bag is not the standard. The shower is not optional, and the respirator comes off last.