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CHST 4 Exam Questions and Answers (Graded A)
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CHST 4 Exam Questions and Answers
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CHST 4 Exam Questions and AnswersArrange the following hazard control steps in the proper sequence: (1) guard the hazard
(2) engineer the hazard out if possible (3) educate personnel.
A.)
2,1,3
B.)
3,1,2
C.)
1,2,3
D.)
3,2,1 - Answer -A
Calculate the incidence rate for a company if the recordable accidents are 40 and the
total man-hours are 1,500,000:
A.)
5.3
B.)
8.7
C.)
10.2
D.)
11.5 - Answer -A
The procedure used to make a job safe by identifying hazards in each step of the job
and developing measures to counteract those hazards is called:
A.) MORT analysis B.) Fault Tree
C.) Job Safety Analysis
D.) Probabilistic Risk Assessment - Answer -C
The ANSI standard that covers construction Hard Hats is: A.) ANSI Z87.1
B.) ANSI B16.4 C.) ANSI A12.1 D.) ANSI Z89.1 - Answer -D
Which of the following best describes the evaluation of tasks involving steps, hazards
and solutions?
A.) System Safety Analysis (SSA) B.) Fault Tree Analysis (FTA)
C.) Job Safety Analysis (JSA)
D.)Management Oversight and Risk Tree (MORT) - Answer -C
,If a job site operation results in a $90,000 loss every three years, what is the expected
loss over a period of 12 years?
A)
$180,000
B.)
$270,000
C.)
$250,000
D.)
$360,000 - Answer -D
Which of the following best meets the definition of"Highly Toxic" as described in the
OSHA Hazcom standard?
A.) A chemical that causes visible destruction of, or irreversible alterations in, living
tissue by chemical action at the site of contact
B.) A chemical that has a median lethal dose LD 50 of 50 milligrams or less per
kilogram of body weight when administered orally to albino rats weighing between 200
and 300 grams each
C.) A chemical that causes a substantial proportion of exposed people or animals to
develop an allergic reaction in normal tissue after repeated exposure to the cheiiiical
D.)A chemical that has a median lethal dose LD 50 of more than 50 milligrams per
kilogram but not more than 500 milligrams per kilogram of body weight when
administered orally to albino rats weighing between - Answer -B
Medical records maintained under the provisions of 1910.1030 must be retained for
what period of time?
A.) 30 years
B.) Duration of employment plus 30 years C.) 5 years
D.)Duration of employment plus 5 years - Answer -B
Wlllch of the following precautions would be the least effective against occupational
dermatoses?
A.) Frequent washing of the face and hands with an organic solvent followed by soap
and water
B) Use of good housekeeping and frequent washing with soap and water
Good hygiene practices and use of gloves
D.)Frequent washing with soap and water and the use of barrier cream. - Answer -A
Which of the following techniques would be the preferred control method for preventing
exposure to a hazardous noise exposure?
A.) Control employee work hours to reduce exposure time B.) Engineer a less
hazardous environment
C.) Provide protective equipment
D.)Automate the process to reduce worker interaction - Answer -B
, Which of the following concerning dilution ventilation is correct? Dilution ventilation is
used to:
A.) Control a contaminant at its source B.) Control fumes from lead fusing C.) Control
low toxicity vapors
D.)Control asbestos fibers - Answer -We selected answer C because:
Dilution ventilation lowers the concentration of a contaminant by adding air to the
general work area. Since the air is added to the general work area it will not effectively
control exposure to a toxic or highly toxic substance used in a specific location.
Which of the following best describes the audiogram?
A.) A ear-cleaning machine
B.) A hearing booth and noise measuring instrument C.) A indicator of hearing acuity
D.) A tool to detect high hazard noise areas - Answer -We selected answer C because:
An audiogram is a record of hearing loss or hearing level measured at several different
frequencies, normally from 500 to 6000 hertz. Hearing levels are generally presented
graphically as a function of frequency. The audiogram measures the acuity or
sharpness of hearing ability.
When respirator qualitative fit testing, required by OSHA, is conducted, which of the
following is used to perform taste threshold screening?
A.) Isoamyl Acetate B.) Isopentyl Acetate C.) Banana Oil
D.)Sodium Saccharin - Answer -We selected answer D because:
Taste threshold screening is conducted using a solution of 0.83 grams of sodium
saccharin in water. Safety and Health Practitioners preparing for the CHST examination
should become familiar with all of the Qualitative Fit Test Protocols required by OSHA.
Which of the following would not be required in an OSHA mandated hearing
conservation program?
A.) Workers must be provided with hearing protection B.) Workers must be trained and
retrained annually C.) Given an audiogram within 6 months
D.) Workers must be given time off to protect hearing - Answer -We selected answer D
because:
The OSHA requirements include provisions for insuring that the employees are provided
hearing protection, given a baseline hearing test (audiogram) in most cases the
audiogram is required within 6 months.
However requirements for removal from the industrial environment to protect hearing is
required only after a hearing threshold shift is detected.
Which of the following is not a principle benefit of a Job Safety Analysis (JSA)?
A.) Assist the supervisor in training
B.) Tool to study jobs for possible improvement C.) Instruct new personnel on a specific
job
D.)Replaces workplace procedures - Answer -We selected answer D because:
The principle benefits of a Job Safety Analysis (JSA) are:
Allowing the supervisor to perform training for safe, efficient operations
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