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.
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