CWEA Collection Systems Maintenance Practice Questions for CWEA Grade 1 and 2 Tests with Verified Answers| 100% Correct| 100% Score

CWEA Collection Systems Maintenance Practice Questions for CWEA Grade 1 and 2 Tests with Verified Answers| 100% Correct| 100% Score Why are gasoline and volatile solvents objectionable when present in a sewer? - They produce an explosion hazard You should never attempt to install, maintain, repair or replace electrical equipment panels, controls, wiring or circuits unless - You know what you are doing, are qualified and are authorized What are the different areas of traffic zones? - Advance Warning Area, Transition Area, Activity Area (buffer space and work space), Termination Area. Could be 4 or 5, justify your answer on the test! why should hydrogen sulfide be controlled? - to protect from corrosion and odors Personnel entering a Permit Required Confined Space must have the following training - entry and rescue To find protective gear before application of a product, you should: - look at the MSDS The gas most commonly associated with septic wastewater is - Hydrogen Sulfide The lack of an unpleasant odor in a manhole, lift station or other structures does not always mean that dangerous gases are not present because: - some dangerous gasses are odorless (for example, carbon monoxide) What are the four conditions necessary to create an explosion? - combustible gas, adequate oxygen, heat and proper mixing of gas and oxygen what does the "transition area" mean in traffic control? - It moves traffic out of its normal path