CSS CSS - Certified Safety Supervisor Personal Protective Equipment and Industrial Hygiene Questions and Answers 1 — Questions and Answers
Question 1: Which ANSI standard governs the selection and use of industrial head protection in the US?
- ANSI Z89.1 (Correct answer)
- ANSI Z87.1
- ANSI Z41.1
- ANSI Z88.2
Correct answer: ANSI Z89.1
ANSI Z89.1 establishes performance requirements for industrial head protection, including hard hats and bump caps.
Question 2: Which type of hearing protection typically provides the highest Noise Reduction Rating (NRR) in occupational settings?
- Earmuffs
- Foam earplugs (Correct answer)
- Banded earplugs
- Canal caps
Correct answer: Foam earplugs
Properly inserted foam earplugs generally achieve NRR values of 29–33 dB, the highest among common hearing protection types.
Question 3: OSHA's respiratory protection standard 29 CFR 1910.134 requires a written program when respirators are used in what circumstance?
- Voluntarily only
- Required for job tasks (Correct answer)
- Whenever any dust is present
- Only for SCBA use
Correct answer: Required for job tasks
A written respiratory protection program is mandatory whenever respirator use is required to protect worker health.
Question 4: An industrial hygienist measures a worker's 8-hour TWA noise exposure at 92 dBA. Under OSHA 29 CFR 1910.95, what is the permissible exposure limit (PEL) for an 8-hour day?
- 85 dBA
- 90 dBA (Correct answer)
- 95 dBA
- 100 dBA
Correct answer: 90 dBA
OSHA's PEL for noise is 90 dBA as an 8-hour TWA; exposure at 92 dBA therefore exceeds the PEL.
Question 5: Which glove material offers the best chemical resistance to ketones and esters?
- Latex
- Nitrile
- Butyl rubber (Correct answer)
- Leather
Correct answer: Butyl rubber
Butyl rubber gloves provide superior resistance to ketones, esters, and many other polar organic solvents.
Question 6: When selecting eye protection, ANSI Z87.1 requires impact-rated safety glasses to be marked with which designation?
- Z87
- Z87+ (Correct answer)
- Z87.1
- ANSI-I
Correct answer: Z87+
The 'Z87+' marking indicates the eyewear meets the high-impact performance requirements of ANSI Z87.1.
CSS CSS - Certified Safety Supervisor Personal Protective Equipment and Industrial Hygiene Questions and Answers 1
Which ANSI standard governs the selection and use of industrial head protection in the US?