Cwea collections Grade 1 Quiz with complete solution Sewer maintenance vehicles are - difficult to maneuver At low concentrations, hydrogen sulfide smells like - Rotten Eggs which safety hazard in a collection system operations can be detected by an insturment? - Toxic Gases What must be checked first before entering a manhole? - Proper barricades or warning devices around manhole.When should field crews use signs and cones? - When over half the street is blocked.The different zones of traffic control include - buffer Elements of defensive driving include - having your vehicle under control The primary function of an entry supervisor is to - maintain overall saftey of permited confied space operations What should be the alarm set point for oxygen in an atmospheric monitoring/testing device? - 19.5% Warning,caution,danger,on a label means - Hazardous MSDS means - Material Data Safety Sheet What is the purpose of the OSHA Hazard Communication SHeet - To make sure employees know about any hazardous chemicals they may contact How can traffic be warned of your presence in the street? - Signs,Cones,Flagman What check should be preformed before driving a vehicle? - Mechanical/Safety Where will collection system operators most likely find black windows Spiders and scorpions. - Manholes Typical safety hazards in collections system operations include - Oxygen defiency You have an air compressor and you have been instructed to compact the backfill in a trench. Which of the following is the best tool to use? - Tamper
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