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