ABSTRACT
A.Yes. B. Yes. Also beware of excavation hazards! C. No. It is not a confined space until connected to the collection
system. 3. The primary hazards of collection (sewer) systems are A. Toxic or flammable gases B. Oxygen deficiency C. Machinery D. A and B 4. When using a self-contained breathing apparatus (SCBA) in the
sewer system, the amount of time you can spend in the collection system depends on
A. The amount of air in the tanks, and how fast it is consumed when you are in the sewer system.
