NANTeL Industrial and Fire Safety 3 — Questions and Answers
Question 1: What is the primary purpose of a Safety Data Sheet (SDS) in an industrial nuclear facility?
- To document nuclear material inventory
- To provide hazard and safe handling information for chemicals (Correct answer)
- To record employee safety training completion
- To list emergency evacuation assembly points
Correct answer: To provide hazard and safe handling information for chemicals
An SDS provides detailed information on chemical properties, hazards, safe handling, PPE requirements, and emergency measures.
Question 2: Under NFPA 101, a 'means of egress' consists of how many distinct components?
- One
- Two
- Three (Correct answer)
- Four
Correct answer: Three
NFPA 101 defines means of egress as three components: the exit access, the exit, and the exit discharge.
Question 3: When a worker is exposed to noise levels at or above what dB(A) threshold must an employer implement a Hearing Conservation Program per OSHA?
- 75 dB(A)
- 80 dB(A)
- 85 dB(A) (Correct answer)
- 90 dB(A)
Correct answer: 85 dB(A)
OSHA's Hearing Conservation Amendment requires a program when workers are exposed to 85 dB(A) or more as an 8-hour TWA.
Question 4: In nuclear plant industrial safety, a 'confined space' that requires a permit before entry is characterized by:
- Any space with less than 7 feet of vertical clearance
- A space large enough to enter, not designed for continuous occupancy, and has a recognized serious hazard (Correct answer)
- Any underground space below grade level
- A room with only one entry/exit point
Correct answer: A space large enough to enter, not designed for continuous occupancy, and has a recognized serious hazard
A permit-required confined space must meet all three criteria: large enough to enter, not designed for continuous occupancy, and contain a serious hazard.
Question 5: Which type of fire sprinkler system is most appropriate for areas in a nuclear plant subject to freezing temperatures?
- Wet pipe system
- Dry pipe system (Correct answer)
- Foam deluge system
- Pre-action system
Correct answer: Dry pipe system
Dry pipe systems use pressurized air instead of water in the pipes, preventing freezing in cold environments.
Question 6: A worker discovers a small chemical spill of an unknown substance in a nuclear plant lab. The FIRST action should be:
- Attempt to identify the substance before taking any action
- Immediately evacuate the area and notify supervision (Correct answer)
- Cover the spill with paper towels and continue working
- Pour water over the spill to dilute it
Correct answer: Immediately evacuate the area and notify supervision
Unknown chemical spills require immediate evacuation and notification so trained hazmat responders can safely assess and clean up.
Question 7: The fire resistance rating of a fire door is intended to ensure the door can withstand fire exposure for a rated period while:
- Remaining fully open to allow egress
- Remaining closed and preventing fire and smoke spread (Correct answer)
- Automatically triggering the plant PA system
- Allowing sprinklers on both sides to activate simultaneously
Correct answer: Remaining closed and preventing fire and smoke spread
Fire doors are rated to remain closed and maintain a barrier against fire and smoke spread for their specified time rating.
NANTeL Industrial and Fire Safety 3
What is the primary purpose of a Safety Data Sheet (SDS) in an industrial nuclear facility?