CWEA Collection Systems Maintenance Questions and 100% CORRECT answers

You should never attempt to install, maintain, repair or replace electrical equipment panels, controls, wiring or circuits unless - ANSWERYou know what you are doing, are qualified and are authorized What are the different areas of traffic zones? - ANSWERAdvance 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? - ANSWERto protect from corrosion and odors Personnel entering a Permit Required Confined Space must have the following training - ANSWERentry and rescue To find protective gear before application of a product, you should: - ANSWERlook at the MSDS The gas most commonly associated with septic wastewater is - ANSWERHydrogen 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: - ANSWERsome dangerous gasses are odorless (for example, carbon monoxide) What are the four conditions necessary to create an explosion? - ANSWERcombustible gas, adequate oxygen, heat and proper mixing of gas and oxygen what does the "transition area" mean in traffic control? - ANSWERIt moves traffic out of its normal path what elements should be considered to improve worker safety in High speed Temporary Traffic control Zones? - ANSWERRerouting traffic around the work site, positioning of law enforcement officers in the temporary traffic control zone, and work zone training What key features would you need to address when developing an S.O.P. for a Lift Station failure? - ANSWERTraffic Control Plan, By-Pass connections, and Spill containment What tools are used with a power rodder? - ANSWERSpring Blades Tools used for sewer rodding include: - ANSWERporcupine, root saw, square bar cork screw What tool would you use to cut VCP pipe? - ANSWERChain Pipe Cutter Which conditions should a gas detection device test for? - ANSWERHydrogen sulfide, explosive/flammable gases, oxygen What does "LEL" mean on a gas detection meter? - ANSWERLower Explosive Limit The oxygen level alarm normally goes off if oxygen levels are below: - ANSWER19.5 percent When developing an S.O.P. for scheduled maintenance of electrical equipment, what program should be addressed as a primary safety guideline? - ANSWERThe L.O.T.O