CWEA Collection Systems Maintenance (140 Questions with 100% Correct Answers)
CWEA Collection Systems Maintenance (140 Questions with 100% Correct Answers) 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?
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