CHST Exam Questions and Answers With Verified Solutions 2025
not less than 25 feet and not more than 75 feet - ✔✔On a construction site, fire extinguishers should be
how close/how far from flammable materials?
How to determine modified rate - ✔✔modification rate X manual rate
If a company is cited by OSHA, you must post the violation for how many days? - ✔✔Three
What is article 500 of the NEC - ✔✔Hazardous Locations
Balance by design and blast gate methods - ✔✔According to the ACGIH, there are two ways to control
air flor distribution
nA sphere, 2 foot in diameter, centered on the head
nOf course, the closer the better... - ✔✔When taking measurements in the "hearing zone", in a non-
reverberant environment, what is the recommended distance?
What is the definition of a STS?(1910.95) - ✔✔nThe Standard Threshold Shift, that is revealed by the
annual audiogram, is a shift from the baseline of 10db or more in the 2000, 3000, or 4000 Hz in the left
or right ear. (A Hz is one cycle per second)v
Once a Significant Threshold Shift is observed for an employee, the hearing protection attenuation must
reduce the exposure to... - ✔✔TWA of 85 DB
impact or impulse noise should be limited to? - ✔✔140 db peak sound pressure level
NFPA 704 Diamond - ✔✔Red - flammability, BLUE - health hazard, YELLOW - reactivity, WHITE - reacts
with water, oxidizing problems, special precautions (anything greater than "1" = stop
NFPA 101 Requires minimum access width to an exit to be? - ✔✔28 inches
not less than 25 feet and not more than 75 feet - ✔✔On a construction site, fire extinguishers should be
how close/how far from flammable materials?
How to determine modified rate - ✔✔modification rate X manual rate
If a company is cited by OSHA, you must post the violation for how many days? - ✔✔Three
What is article 500 of the NEC - ✔✔Hazardous Locations
Balance by design and blast gate methods - ✔✔According to the ACGIH, there are two ways to control
air flor distribution
nA sphere, 2 foot in diameter, centered on the head
nOf course, the closer the better... - ✔✔When taking measurements in the "hearing zone", in a non-
reverberant environment, what is the recommended distance?
What is the definition of a STS?(1910.95) - ✔✔nThe Standard Threshold Shift, that is revealed by the
annual audiogram, is a shift from the baseline of 10db or more in the 2000, 3000, or 4000 Hz in the left
or right ear. (A Hz is one cycle per second)v
Once a Significant Threshold Shift is observed for an employee, the hearing protection attenuation must
reduce the exposure to... - ✔✔TWA of 85 DB
impact or impulse noise should be limited to? - ✔✔140 db peak sound pressure level
NFPA 704 Diamond - ✔✔Red - flammability, BLUE - health hazard, YELLOW - reactivity, WHITE - reacts
with water, oxidizing problems, special precautions (anything greater than "1" = stop
NFPA 101 Requires minimum access width to an exit to be? - ✔✔28 inches
