CHST Test: Questions With Correct Solutions
Which of the following is NOT considered a significant factor in determining
the outcome of an electrocution event? Right Ans - 1. The amount of
electrically resistant material present in work boots and work gloves.
A Noise-Hazard Control Program (and associated Hearing Conservation
Program) is required under OSHA regulation 29 CFR 1910.95 (Occupational
Noise Exposure) where workers may be exposed to noise levels in excess of
an eight -hour-time-weighted average of.. Right Ans - 2. 85 decibels (dB)
As per 29 CFR 1910.1001, the allowable eight-hour exposure limit
concentration to asbestos fibers is not to exceed which of the following?
Right Ans - 3. 0.1 fibers per cm^3 of air
Per OSHA regulations 29 CFR 1910.25-1910.27, the maximum length a single
ladder or a single section of ladder may be is.. Right Ans - 4. No greater
than 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? Right
Ans - 5. Mutagenicity
In a construction environment, which of the following types of PPE is most
suitable for protecting the eyes against airborne dust? Right Ans - 6. Safety
goggles
At what minimum frequency must electrical-insulating gloves be tested to
ensure they adequately protect workers against electrical shock? Right Ans
- 7. Every six months
The most useful tool that CHST's can potentially use for evaluating system
safety levels at smaller-scale worksites is a(n): Right Ans - 8. Job Safety
Analysis (JSA)
If 25 or more employees are to be working unserground at the same time,
which of the following safety procedures MUST be in effect? Right Ans - 9.
,Two separate rescue teams must be available. One within 30 minutes travel
and the second within two hours travel
If a five-foot deep trench is dug in clay material, what angle must the trench
wall not exceed? Right Ans - 10. 53 degrees
"Lifting Index" (LI) is calculated per which of the following? Right Ans - 11.
Load weight / recommended weight limit
"Flash Point" is most accurately defined as which of the following? Right
Ans - 12. The lowest temperature at which a flammable liquid can form an
ignitable mixture in air
Which of the following does a mobile crane operator NOT need to be aware of
in order to ensure a safe lift? Right Ans - 13. The width of the jib
To what part of the body does a body harness typically NOT distribute any
significant fall-arrest force? Right Ans - 14. Lower back
" Recommended weight limit" (RWL) is most accurately defined as which of
the following? Right Ans - 15. The weight that healthy workers could lift for
up to eight hours without causing injuries
The Heinrich "incident to injury ratio" model states that for every 330
accidents,---- result in no injuries, ---- cause minor injuries, and ---- cause
major injuries. Right Ans - 16. 300,29,1
Which of the following is regarded as the "three E's of safety"? Right Ans -
17. Engineering, Education, Enforcement
Total case incident rate ( TCIR) is calculated via which of the following?
Right Ans - 18. (Number of recordable injuries per year x 200,000) / (total
hours worked)
Which type of incident usually accounts for the highest fatality rate in the
construction industry? Right Ans - 19. Falls
, According to OSHA regulation 29 CFR 1926.651, a Stairway, ladder, ramp, or
other safe means of egress shall be locate in trench excavations that are----
feet or more in depth. Right Ans - 20. Four feet
Excavation cave-in protection is ALWAYS required when which of the
following conditions are met? Right Ans - 21. The excavation mainly
comprises of clay or silt, and is greater than five feet in depth
What level of electrical current is enough to potentially result in death?
Right Ans - 22. 75 milliamperes. ----10 milliamperes will cause painful to
severe shock but death usually does not occur below 75 milliamperes.
Which of the following types of construction equipment can NOT make
inadvertent contact with overhead power lines? Right Ans - 23. Bulldozers
Which of the following is NOT a recommended course of action for preventing
falling -object injuries to workers below a scaffold? Right Ans - 24. A safety
buffer zone of 12 feet around the perimeter of a scaffold, for every 10 feet of
elevation, should be employed while the scaffold is in use.
Per OSHA regulation 29 CFR 1926.502, when a 200 pound load is applied in a
downward direction to the top of the edge of a guardrail , it shall not deflect to
a height any less than ---- above the walking or working level. Right Ans -
25. 39 Inches
Which of the following is NOT a type of welding? Right Ans - 26. Modules
welding ----the three common types are oxygen-fuel gas welding , Arc
Welding, Resistance welding.
Which of the following is a common test used to check for cracks in a grinding
wheel? Right Ans - 27. The "Ring Test". ----When a wheel of 10cm in
diameter or less is tapped with a non metallic object it will emit a clear ringing
sound if undamaged.
Which of the following soil classifications is correct? Right Ans - 28. Type
"B"- Cohesive soil with a moderate compressive strength.
Soil classifications are A,B,C, and are all cohesive and start with a high
compressive strength, and end with a low compressive strength
Which of the following is NOT considered a significant factor in determining
the outcome of an electrocution event? Right Ans - 1. The amount of
electrically resistant material present in work boots and work gloves.
A Noise-Hazard Control Program (and associated Hearing Conservation
Program) is required under OSHA regulation 29 CFR 1910.95 (Occupational
Noise Exposure) where workers may be exposed to noise levels in excess of
an eight -hour-time-weighted average of.. Right Ans - 2. 85 decibels (dB)
As per 29 CFR 1910.1001, the allowable eight-hour exposure limit
concentration to asbestos fibers is not to exceed which of the following?
Right Ans - 3. 0.1 fibers per cm^3 of air
Per OSHA regulations 29 CFR 1910.25-1910.27, the maximum length a single
ladder or a single section of ladder may be is.. Right Ans - 4. No greater
than 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? Right
Ans - 5. Mutagenicity
In a construction environment, which of the following types of PPE is most
suitable for protecting the eyes against airborne dust? Right Ans - 6. Safety
goggles
At what minimum frequency must electrical-insulating gloves be tested to
ensure they adequately protect workers against electrical shock? Right Ans
- 7. Every six months
The most useful tool that CHST's can potentially use for evaluating system
safety levels at smaller-scale worksites is a(n): Right Ans - 8. Job Safety
Analysis (JSA)
If 25 or more employees are to be working unserground at the same time,
which of the following safety procedures MUST be in effect? Right Ans - 9.
,Two separate rescue teams must be available. One within 30 minutes travel
and the second within two hours travel
If a five-foot deep trench is dug in clay material, what angle must the trench
wall not exceed? Right Ans - 10. 53 degrees
"Lifting Index" (LI) is calculated per which of the following? Right Ans - 11.
Load weight / recommended weight limit
"Flash Point" is most accurately defined as which of the following? Right
Ans - 12. The lowest temperature at which a flammable liquid can form an
ignitable mixture in air
Which of the following does a mobile crane operator NOT need to be aware of
in order to ensure a safe lift? Right Ans - 13. The width of the jib
To what part of the body does a body harness typically NOT distribute any
significant fall-arrest force? Right Ans - 14. Lower back
" Recommended weight limit" (RWL) is most accurately defined as which of
the following? Right Ans - 15. The weight that healthy workers could lift for
up to eight hours without causing injuries
The Heinrich "incident to injury ratio" model states that for every 330
accidents,---- result in no injuries, ---- cause minor injuries, and ---- cause
major injuries. Right Ans - 16. 300,29,1
Which of the following is regarded as the "three E's of safety"? Right Ans -
17. Engineering, Education, Enforcement
Total case incident rate ( TCIR) is calculated via which of the following?
Right Ans - 18. (Number of recordable injuries per year x 200,000) / (total
hours worked)
Which type of incident usually accounts for the highest fatality rate in the
construction industry? Right Ans - 19. Falls
, According to OSHA regulation 29 CFR 1926.651, a Stairway, ladder, ramp, or
other safe means of egress shall be locate in trench excavations that are----
feet or more in depth. Right Ans - 20. Four feet
Excavation cave-in protection is ALWAYS required when which of the
following conditions are met? Right Ans - 21. The excavation mainly
comprises of clay or silt, and is greater than five feet in depth
What level of electrical current is enough to potentially result in death?
Right Ans - 22. 75 milliamperes. ----10 milliamperes will cause painful to
severe shock but death usually does not occur below 75 milliamperes.
Which of the following types of construction equipment can NOT make
inadvertent contact with overhead power lines? Right Ans - 23. Bulldozers
Which of the following is NOT a recommended course of action for preventing
falling -object injuries to workers below a scaffold? Right Ans - 24. A safety
buffer zone of 12 feet around the perimeter of a scaffold, for every 10 feet of
elevation, should be employed while the scaffold is in use.
Per OSHA regulation 29 CFR 1926.502, when a 200 pound load is applied in a
downward direction to the top of the edge of a guardrail , it shall not deflect to
a height any less than ---- above the walking or working level. Right Ans -
25. 39 Inches
Which of the following is NOT a type of welding? Right Ans - 26. Modules
welding ----the three common types are oxygen-fuel gas welding , Arc
Welding, Resistance welding.
Which of the following is a common test used to check for cracks in a grinding
wheel? Right Ans - 27. The "Ring Test". ----When a wheel of 10cm in
diameter or less is tapped with a non metallic object it will emit a clear ringing
sound if undamaged.
Which of the following soil classifications is correct? Right Ans - 28. Type
"B"- Cohesive soil with a moderate compressive strength.
Soil classifications are A,B,C, and are all cohesive and start with a high
compressive strength, and end with a low compressive strength
