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CHST Study Guide | 420 Questions | With Complete Solutions
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CHST Study Guide | 420 Questions | With Complete Solutions
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CHST Study Guide | 420 Questions | WithComplete Solutions
1910.120 Hazardous Waste Operations and Emergency
Response, requires training for waste site worker, occasional
workers, and sire supervisors. What training is required for the
general waste site workers? Correct Answers 40 hours of
HH HH
training off-site, with at least 3 days field experience under a
trained supervisor
1926.502(d)(15) Anchorages used for attachment of personal
fall arrest equipment shall be independent of any anchorage
being used to support or suspend platforms and capable of
support at least __________? Correct Answers 5,000lbs
HH HH
(22.2kN)
1926.502(d)(16) Personal Fall Arrest Systems , when stopping a
fall, shall be rigged such that an employee can neither free fall
more than
____________________________________________________
___. Correct Answers 6 feet nor contact any lower level
HH HH
1926.502(d)(16) Personal Fall Arrest Systems , when stopping a
fall, shall limit maximum arresting force on an employee to
_______ when used with a body belt and ______ when used
with body harness. Correct Answers 900lbs (4kN) and 1800lbs
HH HH
(8kN)
1926.502(e), Position device system and their use shall conform
to the provisions of: shall be rigged such that employee cannot
,free fall more than_________ and support at least ________ of
potential impact load of employees fall or ___________ which
ever is greater? Correct Answers 2 feet, twice, 3000lbs
HH HH
A __________ is an object that connects a piece of the electrical
equipment to earth or some conducting body that serves in place
of earth. A __________ served to complete the electrical circuit
and prevent the hazard to electrical shock caused by defective
equipment and that may cause death or serious injury. Correct
HH
Answers Ground
HH
A 1000 pound load is lifted with a 2-leg bridle sling whose legs
are at a 30 deg angle with the load. The stress on each leg of the
sling is: Correct Answers SIN A = a/c, a=1000/2
HH HH
SIN A = 500/SIN30 = 1000
A 1200 lbs load is lifted with a 2 leg sling whose legs are at 30
Deg angel with the load. The stress on each leg is? Correct
HH
Answers Sin A = a/c, c=a/sin A, c=600/sin 30, c=1200 lbs
HH
A 20,000 lbs load is lifted with a 2 leg sling whose legs are at 60
Deg angel with the load. The stress on each leg is? Correct
HH
Answers Sin A = a/c, c=a/sin A, c=10000/sin 60, c=11547 lbs
HH
A 25,000 lbs weight is suspended by two equal length cables as
a bar with two hoist lines forming a triangle a 100 Deg angle.
What the stress on each line? Correct Answers Separate into a
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single right triangle carrying half of the load. Reorient and label
(the 40 Deg is complimentary)
Sin A = a/c, c=a/sin A, c=12500/sin 40, c=19450 lbs
,A beam that is safely loaded with a concentrated weight of
4000lbs will be able to carry how much weight equally
distributed the entire length of the beam? Correct Answers
HH
8000lbs, a beam that is safety loaded can carry up to two times
HH
its weight
A bench grinder should have the tool rest adjusted to within
____ inch of the wheel, and the tongue guard should be adjusted
to within ____ inch of the wheel> Correct Answers According
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to the NCS, 1/8 inch and 1/4 inch.
A CHST is involved in a monitoring operation within an
equipment repair area and is using a CO direct reading
instrument. It has been reading 35 ppm for 4 hours, suddenly
without any changes in condition in the general area. Then the
reading increases to 65 ppm for 5 minutes, whats your next step?
Correct Answers Stop and re-calibrate instrument
HH HH
A radioisotope has a half-life of 1 year. How many years will it
take to reduce the initial activity to less than 10%. Correct
HH
Answers 4 years
HH
100% 1 year = 50%, 2 Years = 25%, 3 years = 12.5, 4 years =
6.25%
A safety orientation session might include the information that
the A-weighted sound level measurement is used as the standard
scale in occupational noise measurement because:? CorrectHH
Answers Weighing is related to effects of noise on the ear
HH
A standard combustible gas indicator reads in? Correct
HH
Answers Percentage of LEL
HH
, A steel manufacturing plant with a $1,100,000 payroll sustains
workers' compensation loss of $90,000 in cy 2003. The
Experience modification factor for this plant is 1.4 and the
manual rate is $7.45 per $100.00 of payroll. What is the
modification rate for this company? Correct Answers
HH
Modification Rate = Manual Rate X Experience Modification
HH
7.45 x 1.4 = 10.43
A train carrying industrial chemical is traveling at 120 mph. The
engineer's reaction time is 0.9 second. How many Feet will the
locomotive travel before the engineer recognizes an emergency
situation and actually applies the brakes? Correct Answers
HH
Distance = Speed x Time
HH
D = (120 x 5280) s 0.9secs
D = 5280/3600=1.47 (a constant that is often used in these type
of problems) 1.47 x MPH = Feet per second
D = 120x1.47x.0.9 = 158.8
A worker has returned to work after an injury with a "light
work" letter from his doctor. The supervisor told the worker that
he would have to do his normal job and ignore the doctors
orders. Your first action should be: Correct Answers Discuss
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the situation with the supervisor
A worker wearing a belt with a six-foot lanyard attached at
waist-height could be subject to a maximum of __________ feet
free fall? Correct Answers 6
HH HH
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