CWEA Collections Grade 2 (Two) | 75 Questions with Verified Answers.

CWEA Collections Grade 2 (Two) | 75 Questions with Verified Answers. Why are gasoline and volatile solvents objectionable when present in a sewer? They produce an explosion hazard You should never attempt to install, troubleshoot, maintain, repair, or replace electrical equipment unless: You know what you are doing, are qualified, and are authorized. How many different areas of traffic zones are there when working in roadways? Five Why should hydrogen sulfide be controlled? To protect sewers and structures from corrosion Personnel entering a Permit Required Confined Space must have the following training: Entry and rescue procedures To find proper protective gear before application of a product, you would: Look at the MSDS (Material Safety Data Sheet) The gas most commonly associated with septic wastewater is: Hydrogen Sulfide (H2S) The lack of an unpleasant odor in a structure does not always mean that dangerous gases are not present because: Some dangerous gases have no odor What four conditions are necessary to create an explosion? Combustible gas, adequate oxygen, sufficient heat, and proper mixing of gas and oxygen. What does "transition area" mean in traffic control? Moves traffic out of its normal path The term "transition area" is one component of a: Traffic Control Zone