HAZWOPER Module 41-50 Exam All Possible Questions and Answers with complete solution

One should never enter a permit-requiring confined space without a safety attendant on duty and adequate air testing - True If the confined space has contained hazardous substances, it is important for the confined space to be ______ before entry - Emptied and purged Air in the confined space should be tested for _____ - Oxygen content, flammability, and toxicity What are the OSHA acceptable limits for oxygen in a confined space? - 19.5%-23.5% What must you have prior to entering a confined space? - Confined Space Entry Permit Other than a confined space entry permit, what else must you have prior to entry? - Communications Training _____ be provided for all personnel associated with a confined space entry - Must For rescue operations, the rescue line should pass a - 2,000 pound test If the meter reading is still above _____ of the LEL, the confined space must be cleaned before entry is permitted - 10% Two factors that can cause an atmosphere to become flammable are _______ - Oxygen and flammable components Define LEL - Lower Explosive Limit_____ devices permit employees to work safely on de-energized equipment without fear that the devices will be accidentally moved - Lockout/Tagout Portable electric tools used in a confined space must be protected by a _______ - Ground fault circuit interrupter Along with other equipment, a _________ must be worn when making a top entry into a confined space - Safety harness ______ is required before entry to ensure the atmosphere is acceptable before an entry permit is issued - Ventilation Many fatalities occur because victims do not fully understand the threat of airborne hazards that they cannot ____ - See, smell, or feel