CHST FREE Construction Health and Safety Technician MCQ Questions and Answers 3

Question 1

Under OSHA's excavation standard (29 CFR 1926 Subpart P), what is the minimum depth at which a protective system is required for a trench in Type C soil?

Accepted Answer

5 feet

Answer

OSHA requires a protective system for any trench 5 feet or deeper, regardless of soil type, unless the excavation is made entirely in stable rock.

Question 2

A worker is exposed to a noise level of 95 dBA for the entire 8-hour shift. According to OSHA's permissible exposure limit table, how long may a worker be exposed to 95 dBA before reaching the PEL?

Accepted Answer

4 hours

Answer

OSHA's noise PEL table specifies that 95 dBA is permissible for a maximum of 4 hours per workday.

Question 3

Which OSHA standard establishes requirements for controlling hazardous energy during servicing and maintenance of machinery?

Accepted Answer

29 CFR 1910.147

Answer

29 CFR 1910.147 is the OSHA lockout/tagout standard that controls hazardous energy during servicing and maintenance activities.

Question 4

When conducting a Job Hazard Analysis (JHA), what is the FIRST step in the process?

Accepted Answer

Select the job to be analyzed

Answer

The first step in a JHA is selecting which job to analyze, typically prioritizing jobs with high injury rates or serious potential hazards.

Question 5

According to OSHA's scaffold standard, what is the minimum safe working load for scaffold planks used on light-duty scaffolds?

Accepted Answer

50 lbs/sq ft

Answer

OSHA requires light-duty scaffolds to support at least 25 pounds per square foot of the platform area, but standard plank ratings begin at 50 lbs/sq ft for light-duty classification.

CHST - Construction Health and Safety Technician Practice Test

CHST - Construction Health and Safety Technician Practice Test

CHST FREE Construction Health and Safety Technician MCQ Questions and Answers 3