CHST Exam Questions and Complete Solutions
When must a handrail be added to stairwell? - ANSWER When it is 30 inches or one having four
or more risers.
What are four concerns a CHST must address regarding unsafe use of ladders and stairwells? -
ANSWER Slippery conditions, handrails on specific types, not used for storage and examined for
weak structure.
Specifications state that scaffolding must be of sufficent strength to hold more than how many
times its specified weight? - ANSWER 4 times.
How often should ropes and rigging in suspension scaffolding be inspected for damage? -
ANSWER At the beginning and during each shift.
How far from electrical power lines must a scaffold be? - ANSWER 10 feet
What are three things scaffolds must have? - ANSWER Toe boards, guardrails and mid rails.
How many catagories does an MSDS have? - ANSWER 16
What is the cheif concern in choosing the appropriate respirator? - ANSWER Material hazards
presented by the worksite.
What type of respirator is not good for workers with asthma? - ANSWER Negative pressure.
Workers medical conditions are factors in choosing respirators.
What are the three main factors to consider when choosing respirators? - ANSWER 1. The
physical configuration of the jobsite. 2. The workers medical conditions. 3. Worker comfort.
, What does MFF stand for? - ANSWER Metal Fume Fever.
What are the symptoms of MFF? - ANSWER Resemble classical flu symptoms.
Welders who work with hat tend to have higher incidence of MFF? - ANSWER Zinc Oxides
What can prevent MFF? - ANSWER Welders to wear respirators and local or exhaust ventilation
can effect nearby workers.
What are the safe operating procedures pertaining to utlility and service lines when a building is
being prepared for demolitions. - ANSWER 1. Conduct survey inspection. 2. Document specific
hazards. 3. Evaluate utility functions servicing the building.
What utlilties must be cute before demolition begins? - ANSWER Electric, water, gas, sewer and
any other service.
What should the survey report include for demolition? - ANSWER Whether there are dangers
posed to workers or the environment like chemicals, gases, explosives, flammables or other
hazardous materials in storage tanks.
When can materials be dropped through floor openings? - ANSWER When the drop area is
completely enclosed and barricaded. Barricades must be at least 42 inches high and no closer to
the drop area than 6 feet.
From which height must a chute be used when removing waste form upper levels of buildings?
- ANSWER 20 feet. The chute can be made of wood, alloyed metal and must be securely
anchored.
Should glass windows be removed before demolition? - ANSWER YEs, when there are concerns
for workers being cut by broken glass.
When must a handrail be added to stairwell? - ANSWER When it is 30 inches or one having four
or more risers.
What are four concerns a CHST must address regarding unsafe use of ladders and stairwells? -
ANSWER Slippery conditions, handrails on specific types, not used for storage and examined for
weak structure.
Specifications state that scaffolding must be of sufficent strength to hold more than how many
times its specified weight? - ANSWER 4 times.
How often should ropes and rigging in suspension scaffolding be inspected for damage? -
ANSWER At the beginning and during each shift.
How far from electrical power lines must a scaffold be? - ANSWER 10 feet
What are three things scaffolds must have? - ANSWER Toe boards, guardrails and mid rails.
How many catagories does an MSDS have? - ANSWER 16
What is the cheif concern in choosing the appropriate respirator? - ANSWER Material hazards
presented by the worksite.
What type of respirator is not good for workers with asthma? - ANSWER Negative pressure.
Workers medical conditions are factors in choosing respirators.
What are the three main factors to consider when choosing respirators? - ANSWER 1. The
physical configuration of the jobsite. 2. The workers medical conditions. 3. Worker comfort.
, What does MFF stand for? - ANSWER Metal Fume Fever.
What are the symptoms of MFF? - ANSWER Resemble classical flu symptoms.
Welders who work with hat tend to have higher incidence of MFF? - ANSWER Zinc Oxides
What can prevent MFF? - ANSWER Welders to wear respirators and local or exhaust ventilation
can effect nearby workers.
What are the safe operating procedures pertaining to utlility and service lines when a building is
being prepared for demolitions. - ANSWER 1. Conduct survey inspection. 2. Document specific
hazards. 3. Evaluate utility functions servicing the building.
What utlilties must be cute before demolition begins? - ANSWER Electric, water, gas, sewer and
any other service.
What should the survey report include for demolition? - ANSWER Whether there are dangers
posed to workers or the environment like chemicals, gases, explosives, flammables or other
hazardous materials in storage tanks.
When can materials be dropped through floor openings? - ANSWER When the drop area is
completely enclosed and barricaded. Barricades must be at least 42 inches high and no closer to
the drop area than 6 feet.
From which height must a chute be used when removing waste form upper levels of buildings?
- ANSWER 20 feet. The chute can be made of wood, alloyed metal and must be securely
anchored.
Should glass windows be removed before demolition? - ANSWER YEs, when there are concerns
for workers being cut by broken glass.
