CHST Exam Questions with Complete Answers
NOT considered a significant factor in determining the outcome of an electrocution event? -
ANSWER
29 CFR 1910.1001, the allowable eight-hour exposure limit concentration to asbestos fibers is
not to exceed which of the following? - ANSWER 0.1 fiber per cm3
29 CFR 1910.25-1910.27, the maximum length a single ladder or a single section of ladder may
be is __________. - ANSWER 30 feet
Which of the following is NOT stipulated as a hazardous waste material attribute to which the
U.S. Environmental Protection Agency extends a designated waste code (e.g., #D001), as per 40
CFR 261, Subpart C?
a. Toxicity b. Corrosivity c. Mutagenicity d. Ignitability - ANSWER Ignitability
At what minimum frequency must electrical-insulating gloves be tested to ensure they
adequately protect workers against electrical shock? - ANSWER 6 month intervals
The most useful tool that CHSTs can potentially use for evaluating system safety levels at
smallerscale worksites is a(n): a. Failure modes and - ANSWER JSA
If 25 or more employees are to be working underground at the same time, which of the
following safety procedure(s) must be in effect? - ANSWER Two separate, independent
telephone lines to the underground must be active and operational.
If a five-foot deep trench is dug in clay material, what angle must the trench wall not exceed? -
ANSWER 53 degrees
, "Lifting index" (LI) is calculated by? - ANSWER dividing the load weight by the recommended
weight limit (RWL)
"Flash point" is most accurately defined as? - ANSWER the lowest temperature at which a
flammable liquid can form an ignitable mixture in air.
what does a mobile-crane operator need to be aware of in order to ensure a safe lift? -
ANSWER -Whether outriggers are ended or retracted
-angel of the boom
-if tires are inflated
-ensure the crane is level
-extended outriggers are supported
To what part of the body does a body harness typically NOT distribute any significant fall-arrest
force? - ANSWER lower back
"Recommended weight limit" (RWL) is most accurately defined as? - ANSWER the weight that
healthy workers could lift for up to eight hours without causing musculoskeletal injuries
The Heinrich "incident to injury ratio" model states that for every 330 accidents, _______ result
in no injuries, _______ cause minor injuries, and _______ cause(s) major injuries. - ANSWER
300:29:1.
"three E's of safety"? - ANSWER engineering, education, enforcment
Total case incident rate (TCIR) is calculated via which of the following? - ANSWER the number of
OSHA-recordable injury cases in a year per hundred full-time employees
Which type of incident usually accounts for the highest fatality rate in the construction
industry? - ANSWER Falls
NOT considered a significant factor in determining the outcome of an electrocution event? -
ANSWER
29 CFR 1910.1001, the allowable eight-hour exposure limit concentration to asbestos fibers is
not to exceed which of the following? - ANSWER 0.1 fiber per cm3
29 CFR 1910.25-1910.27, the maximum length a single ladder or a single section of ladder may
be is __________. - ANSWER 30 feet
Which of the following is NOT stipulated as a hazardous waste material attribute to which the
U.S. Environmental Protection Agency extends a designated waste code (e.g., #D001), as per 40
CFR 261, Subpart C?
a. Toxicity b. Corrosivity c. Mutagenicity d. Ignitability - ANSWER Ignitability
At what minimum frequency must electrical-insulating gloves be tested to ensure they
adequately protect workers against electrical shock? - ANSWER 6 month intervals
The most useful tool that CHSTs can potentially use for evaluating system safety levels at
smallerscale worksites is a(n): a. Failure modes and - ANSWER JSA
If 25 or more employees are to be working underground at the same time, which of the
following safety procedure(s) must be in effect? - ANSWER Two separate, independent
telephone lines to the underground must be active and operational.
If a five-foot deep trench is dug in clay material, what angle must the trench wall not exceed? -
ANSWER 53 degrees
, "Lifting index" (LI) is calculated by? - ANSWER dividing the load weight by the recommended
weight limit (RWL)
"Flash point" is most accurately defined as? - ANSWER the lowest temperature at which a
flammable liquid can form an ignitable mixture in air.
what does a mobile-crane operator need to be aware of in order to ensure a safe lift? -
ANSWER -Whether outriggers are ended or retracted
-angel of the boom
-if tires are inflated
-ensure the crane is level
-extended outriggers are supported
To what part of the body does a body harness typically NOT distribute any significant fall-arrest
force? - ANSWER lower back
"Recommended weight limit" (RWL) is most accurately defined as? - ANSWER the weight that
healthy workers could lift for up to eight hours without causing musculoskeletal injuries
The Heinrich "incident to injury ratio" model states that for every 330 accidents, _______ result
in no injuries, _______ cause minor injuries, and _______ cause(s) major injuries. - ANSWER
300:29:1.
"three E's of safety"? - ANSWER engineering, education, enforcment
Total case incident rate (TCIR) is calculated via which of the following? - ANSWER the number of
OSHA-recordable injury cases in a year per hundred full-time employees
Which type of incident usually accounts for the highest fatality rate in the construction
industry? - ANSWER Falls
