CMRT Maintenance Safety Procedures 2 — Questions and Answers
Question 1: When performing a group lockout on a complex machine with multiple energy sources, which statement best describes the correct approach?
- One authorized employee applies a single lock on behalf of the entire crew
- Each authorized employee applies their own personal lock to a hasp or lockout device (Correct answer)
- The supervisor applies a master lock and distributes keys to all workers
- A single tag is placed on the main disconnect and the crew verbally confirms awareness
Correct answer: Each authorized employee applies their own personal lock to a hasp or lockout device
In a group lockout, every authorized employee applies their own personal lock so no single individual can re-energize equipment while others are still working.
Question 2: A confined space is classified as 'permit-required' under OSHA 29 CFR 1910.146 when it:
- Has restricted entry or exit and is large enough for a worker to enter
- Contains or has the potential to contain a serious safety or health hazard (Correct answer)
- Is not designed for continuous occupancy by employees
- Requires a ladder for entry and has limited natural ventilation
Correct answer: Contains or has the potential to contain a serious safety or health hazard
A confined space becomes permit-required when it contains or has the potential to contain a hazard such as hazardous atmosphere, engulfment material, or internal configuration that could trap a worker.
Question 3: What is the primary purpose of a Job Hazard Analysis (JHA) before beginning maintenance work?
- To document the time required to complete the task for scheduling purposes
- To identify and eliminate or control hazards associated with each step of the job (Correct answer)
- To assign liability in the event of a workplace injury
- To satisfy OSHA recordkeeping requirements before work begins
Correct answer: To identify and eliminate or control hazards associated with each step of the job
A JHA breaks a task into steps and identifies hazards at each step so that appropriate controls can be implemented before work begins.
Question 4: During hot work (welding/cutting) near flammable materials, which action is the FIRST priority before igniting a torch?
- Notify the fire department of the planned work
- Obtain a hot work permit and verify the area is clear of flammable materials within the required radius (Correct answer)
- Ensure a fire watch is stationed with a charged extinguisher
- Don welding PPE including face shield and leather gloves
Correct answer: Obtain a hot work permit and verify the area is clear of flammable materials within the required radius
Obtaining a hot work permit and clearing the area of flammable materials within the required distance is the first administrative step that authorizes and conditions the work.
Question 5: Which electrical safety standard governs safe work practices for electrical installations in general industry, including maintenance activities?
- OSHA 29 CFR 1910.147 (LOTO standard)
- NFPA 70E — Standard for Electrical Safety in the Workplace (Correct answer)
- ANSI Z10 — Occupational Health and Safety Management Systems
- OSHA 29 CFR 1926.404 (construction wiring methods)
Correct answer: NFPA 70E — Standard for Electrical Safety in the Workplace
NFPA 70E establishes electrical safety requirements for workers in general industry, including arc flash boundaries, PPE selection, and energized work permits.
Question 6: A maintenance technician notices a yellow 'caution' tag on a piece of equipment. According to OSHA's Tagout-Only program rules, this means:
- The equipment is safe to operate under reduced load conditions
- The equipment has a known deficiency but the tag alone does not provide the same protection as a lockout (Correct answer)
- The equipment has passed inspection and is cleared for full operation
- The equipment requires two-person operation until the tagged condition is corrected
Correct answer: The equipment has a known deficiency but the tag alone does not provide the same protection as a lockout
A tag alone does not provide the physical restraint that a lock does; OSHA requires employers to demonstrate that a tagout program provides equivalent protection when a lock cannot be applied.
Question 7: When using a hierarchy of controls to address a maintenance safety hazard, which control method provides the highest level of protection?
- Administrative controls such as written procedures and safety training
- Personal protective equipment (PPE) selected for the specific hazard
- Elimination of the hazard at its source (Correct answer)
- Engineering controls such as guards and ventilation systems
Correct answer: Elimination of the hazard at its source
Elimination — physically removing the hazard — is the most effective control because it prevents exposure entirely rather than managing or mitigating it.
CMRT Maintenance Safety Procedures 2
When performing a group lockout on a complex machine with multiple energy sources, which statement best describes the correct approach?