STSC Personal Protective Equipment in Construction

Question 1

Under OSHA 29 CFR 1926.100, what ANSI standard governs the selection of hard hats (head protection) for construction workers?

Accepted Answer

ANSI Z89.1

Answer

OSHA 1926.100(a) requires head protection to meet ANSI Z89.1 (American National Standard for Industrial Head Protection). This standard establishes performance requirements for hard hats based on class and type.

Question 2

What does the ANSI Z87.1 standard designate, and what marking indicates that safety glasses provide impact protection?

Accepted Answer

Eye and face protection — the '+' symbol after the manufacturer mark indicates high impact rating

Answer

ANSI Z87.1 establishes performance requirements for eye and face protection. Safety glasses with a '+' marking (e.g., Z87+) meet the high-velocity impact test, providing greater impact protection than basic Z87 glasses.

Question 3

A construction worker must select hearing protection for an area where the 8-hour time-weighted average (TWA) noise level is 95 dB(A). What is the minimum Noise Reduction Rating (NRR) of the hearing protection device needed?

Accepted Answer

NRR 25 or higher to reduce effective exposure to below 90 dB(A) using OSHA's derated calculation

Answer

OSHA requires that hearing protection reduce employee noise exposure to below the PEL. Using OSHA's derating formula [(NRR-7)/2], an NRR of at least 25 is needed to achieve a minimum 9 dB reduction and bring effective exposure below 90 dB(A).

Question 4

Under OSHA's foot protection standard (1926.96), what ASTM standard governs safety-toed footwear for construction workers?

Accepted Answer

ASTM F2413 — specifying impact and compression resistance for safety-toed footwear

Answer

OSHA 1926.96 requires safety-toed footwear to meet ASTM F2413 (Standard Specification for Performance Requirements for Foot Protection), which sets minimum impact (75 ft-lb) and compression (2,500 lb) resistance for safety toes.

Question 5

What is the key difference between an N95 filtering facepiece respirator and a P100 filtering facepiece respirator under NIOSH's 42 CFR Part 84?

Accepted Answer

N95 is not oil-resistant and filters 95% of particles; P100 is oil-proof and filters 99.97% of particles

Answer

NIOSH designations indicate: N = Not oil-resistant; R = oil-Resistant; P = oil-Proof (most oil-resistant). Numbers indicate filtration efficiency: 95 = 95%, 99 = 99%, 100 = 99.97%. P100 provides higher filtration efficiency and oil-proof characteristics.

(STSC) Safety Trained Supervisor Construction Practice Test

(STSC) Safety Trained Supervisor Construction Practice Test

STSC Personal Protective Equipment in Construction