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2025 CHST (Construction Health and Safety Technician)
Exam with accurate questions and verified answers covering
safety regulations, hazard control, risk management, and
construction standards.
During a forklift operation you observe the back of a forklift tip
as a heavy load is being lifted which of the following is the
proper course of action? - ANSWER-Do not proceed with this
lift
Entry into a confined space is required at one of your
construction site. The oxygen concentration in a confined space
has been measured at 16% which of the following most correctly
indicates the danger to personnel entering this atmosphere? -
ANSWER-This level of oxygen because impairment of
judgment and difficult breathing
A CHST is involved in a monitoring operation within an
equipment repair area and is using a carbon monoxide direct
reading instrument. The instrument has been reading 35 ppm for
four hours, suddenly without any change in the conditions in the
general area the indicator increases rapidly to 65 ppm and has
remained constant for five minutes which of the following is the
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most appropriate action? - ANSWER-Stop and re-calibrate
instrument - this is due to the lack of environmental changes
The following statement best describes the intent of a
NSI/ASCZ 49.1, an excellent voluntary consensus standard. The
standard sets forth requirements for all aspects of safety and
health in the welding environment. It contains info on protection
of personnel the general area, generation fire prevention and
protection, and confined space. - ANSWER-The firewatch
should maintain vigilance for 1/2 hour after welding operations
cease
A 1000 pound load is lifted with a two leg brittle sling whose
legs are at A 13° angle with the load distress on each leg of the
sling is most nearly - ANSWER-2,233lbs
Double divided slings are SIN full
1000/2/SIN13=2,223
A liquid with a flash point of 100°F and boiling point of 110°F
would be classified by the OSHA and the NFPA as a? -
ANSWER-Class II combustible liquid
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Flammable
Class I flash point below 100
Class IA boiling below 100 flash point below 73
Class IB boiling point At or above 100°F flashpoint below 73°F
Class IC flashpoint at or above 73°F and below 100°F
Combustible: All flashpoint
Class II at or above 100 breeze Fahrenheit and below 140°F
Class III at or above 140°F
Class IIIA. At or above 140°F and below 200°F
Class IIIB At or above 200°F
Sound pressure levels are measured in which Unit? - ANSWER-
Microbars
According to OSHA at 1910. 147 and energy control program is
required to ensure for any worker performs servicing
maintenance on a machine or equipment, where the unexpected
start up or release of stored energy could occur and cause injury,
the machine or equipment shall be isolated from the energy
source. This generally requires a physical lock and tag
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arrangement to meet the intent of the OSHA. When is it
permissible to only use a tag out system of protection? -
ANSWER-When other protective measures are in place
When placing a standard straight ladder the horizontal distance
from the base to the vertical plane of the support should be
approximately_____________ The ladder length between
supports - ANSWER-1/4 of the working length
What type of respirator should be used for entry into a confined
space? - ANSWER-Airline with supplied escape bottle
Which of the following respirator is an air purifying type? -
ANSWER-Gas mask
Which personal protective equipment would provide the greatest
degree of protection and be the most appropriate for a worker
transporting or handling H2S04 (sulfuric acid)? - ANSWER-A
combination of non-vented goggles and a face shield
OSHA requires protective equipment for protection from high-
voltage electrical contact in some instances. These "rubber
goods" consist of gloves, matting, blankets, hoods, line hose and
2025 CHST (Construction Health and Safety Technician)
Exam with accurate questions and verified answers covering
safety regulations, hazard control, risk management, and
construction standards.
During a forklift operation you observe the back of a forklift tip
as a heavy load is being lifted which of the following is the
proper course of action? - ANSWER-Do not proceed with this
lift
Entry into a confined space is required at one of your
construction site. The oxygen concentration in a confined space
has been measured at 16% which of the following most correctly
indicates the danger to personnel entering this atmosphere? -
ANSWER-This level of oxygen because impairment of
judgment and difficult breathing
A CHST is involved in a monitoring operation within an
equipment repair area and is using a carbon monoxide direct
reading instrument. The instrument has been reading 35 ppm for
four hours, suddenly without any change in the conditions in the
general area the indicator increases rapidly to 65 ppm and has
remained constant for five minutes which of the following is the
,2|Page
most appropriate action? - ANSWER-Stop and re-calibrate
instrument - this is due to the lack of environmental changes
The following statement best describes the intent of a
NSI/ASCZ 49.1, an excellent voluntary consensus standard. The
standard sets forth requirements for all aspects of safety and
health in the welding environment. It contains info on protection
of personnel the general area, generation fire prevention and
protection, and confined space. - ANSWER-The firewatch
should maintain vigilance for 1/2 hour after welding operations
cease
A 1000 pound load is lifted with a two leg brittle sling whose
legs are at A 13° angle with the load distress on each leg of the
sling is most nearly - ANSWER-2,233lbs
Double divided slings are SIN full
1000/2/SIN13=2,223
A liquid with a flash point of 100°F and boiling point of 110°F
would be classified by the OSHA and the NFPA as a? -
ANSWER-Class II combustible liquid
,3|Page
Flammable
Class I flash point below 100
Class IA boiling below 100 flash point below 73
Class IB boiling point At or above 100°F flashpoint below 73°F
Class IC flashpoint at or above 73°F and below 100°F
Combustible: All flashpoint
Class II at or above 100 breeze Fahrenheit and below 140°F
Class III at or above 140°F
Class IIIA. At or above 140°F and below 200°F
Class IIIB At or above 200°F
Sound pressure levels are measured in which Unit? - ANSWER-
Microbars
According to OSHA at 1910. 147 and energy control program is
required to ensure for any worker performs servicing
maintenance on a machine or equipment, where the unexpected
start up or release of stored energy could occur and cause injury,
the machine or equipment shall be isolated from the energy
source. This generally requires a physical lock and tag
, 4|Page
arrangement to meet the intent of the OSHA. When is it
permissible to only use a tag out system of protection? -
ANSWER-When other protective measures are in place
When placing a standard straight ladder the horizontal distance
from the base to the vertical plane of the support should be
approximately_____________ The ladder length between
supports - ANSWER-1/4 of the working length
What type of respirator should be used for entry into a confined
space? - ANSWER-Airline with supplied escape bottle
Which of the following respirator is an air purifying type? -
ANSWER-Gas mask
Which personal protective equipment would provide the greatest
degree of protection and be the most appropriate for a worker
transporting or handling H2S04 (sulfuric acid)? - ANSWER-A
combination of non-vented goggles and a face shield
OSHA requires protective equipment for protection from high-
voltage electrical contact in some instances. These "rubber
goods" consist of gloves, matting, blankets, hoods, line hose and
