CHST FREE Construction Health and Safety Technician Questions and Answers 3

Question 1

What is the maximum permissible noise exposure level for an 8-hour time-weighted average under OSHA construction standards?

Accepted Answer

90 dBA

Answer

OSHA's construction noise standard (29 CFR 1926.52) sets the permissible exposure limit at 90 dBA for an 8-hour TWA.

Question 2

When conducting a confined space entry on a construction site, which atmospheric condition requires immediate evacuation?

Accepted Answer

Oxygen level below 19.5% or above 23.5%

Answer

An oxygen-deficient atmosphere below 19.5% or oxygen-enriched atmosphere above 23.5% both represent immediately dangerous conditions requiring evacuation.

Question 3

Which hierarchy of controls method is considered the MOST effective for eliminating construction site hazards?

Accepted Answer

Elimination of the hazard

Answer

Elimination removes the hazard entirely and is the most effective level in the hierarchy of controls.

Question 4

What is the minimum width requirement for a scaffold platform used in construction under OSHA standards?

Accepted Answer

18 inches

Answer

OSHA requires scaffold platforms to be at least 18 inches wide for standard scaffolding in construction (29 CFR 1926.451).

Question 5

According to OSHA, how often must ground-fault circuit interrupters (GFCIs) be tested on construction sites when using the assured equipment grounding conductor program alternative?

Accepted Answer

Before each use and at regular intervals not exceeding 3 months

Answer

Under the assured equipment grounding conductor program, equipment must be tested before first use, after repair, and at intervals not exceeding 3 months.

CHST - Construction Health and Safety Technician Practice Test

CHST - Construction Health and Safety Technician Practice Test

CHST FREE Construction Health and Safety Technician Questions and Answers 3