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CHST Exam Questions with correct Answers (Graded A)
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CHST Exam Questions with correct Answers
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CHST Exam Questions with correctAnswers
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
According to OSHA regulation 29 CFR 1926.651, a stairway, ladder, ramp, or other safe
means of egress shall be located in trench excavations that are ____ feet or more in
depth. - Answer -four feet or more
Excavation cave-in protection is ALWAYS required when which of the following
conditions are met? - Answer -The excavation mainly comprises clay or silt, and is
greater than five feet in depth.
What level of electrical current is enough to potentially result in death? - Answer -over
10 milliamperes
Which of the following types of construction equipment can NOT make inadvertent
contact with overhead power lines? - Answer -Bulldozers are generally not tall enough
to hit overhead power lines.
29 CFR 1926.502, when a 200-pound load is applied in a downward direction to the top
edge of a guardrail, it shall not deflect to a height any less than ________ above the
walking or working level. - Answer -39 inches
Which of the following is NOT a type of welding?
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