CHST Exam Prep: Questions Answered With Expert
Insight
Class I Standpipe Right Ans - For professional Fire Fighters. Hose is 2 1/2
inches in diameter. Typically found in stairwells
Class II Standpipe Right Ans - Hose is 1 1/2 inches in diameter. For
occupants in the building and intended for all spaces in building. Typically
found in cabinets and spaced according to the hose length.
Class III Standpipe Right Ans - Both firefighters and occupants. Adjusts to 1
1/2 or 2 1/2 in diameter.
How far from electrical power lines must a scaffold be? Right Ans - 10 feet
The refuge area must have a fire-resistance rating of at least how much?
Right Ans - Minimum one hour fire resistance for walls protecting refuge area
from inside of building
Standpipe System Right Ans - An arrangement of piping, valves, and hose
connections installed in a structure to deliver water for fire hoses.
Metal Fume Fever Right Ans - What results from the inhalation of fumes,
like iron, nickel, copper, zinc. Often results from welding without proper
ventilation/respiratory protection. Resembles flu like symptoms
Symptoms of Metal Fume Fever Right Ans - Flu like symptoms such as
headaches, fever, chills, muscle aches/weakness, thirst, nausea, vomiting,
chest pain, fatigue, stomachaches.
Employees who work with what substance(s) tend to have higher incidents of
Metal Fume Fever? Right Ans - Zinc Oxide, Chromium (stainless steel),
nickel, manganese, cobalt, lead, arsenic, copper platinum, selenium, gold and
silver
What can prevent Metal Fume Fever? Right Ans - local or exhaust
ventilation and personal respirators
, What are the safe operating procedures for utility and service lines PRIOR to
demolitions? Right Ans - 1. Conduct survey report
2. Document specific hazards
3. Evaluate utility functions servicing the building
What utilities must be cut PRIOR to demolition? Right Ans - Electric, water,
gas, sewer and any other service
What should the (preliminary) demolition survey report include? Right
Ans - 1. Whether there are dangers posed to workers
2. Whether there are dangers posed to the environment
Ex: Chemicals, gases, explosives, flammables, or any other hazardous
materials in storage tank(s)
When can materials be dropped through floor openings? Right Ans - 1.
When the drop area is completely enclosed and barricaded.
What requirements must barricades meet before material can be dropped
through floor openings? Right Ans - Barricades must be at least 42 inches
high and no closer to the drop area than 6 feet.
At what height must a chute be used when removing waste from upper levels
of buildings? Right Ans - 20 feet
What requirements must chutes meet when they are used to remove waste
from upper levels of a building? Right Ans - Must be made from wood or
alloyed metal. Chutes must be securely anchored.
Should glass windows be removed PRIOR to demolition? Right Ans - Yes,
when there is a concern regarding workers exposed to broken glass.
What is an exit discharge? Right Ans - An exit discharge leads directly to an
outdoor area or street
What is an exit route? Right Ans - An exit route DOES NOT NECESSARILY
lead out into an open area, yard or street. Exit routes often lead to refuge
areas.
Insight
Class I Standpipe Right Ans - For professional Fire Fighters. Hose is 2 1/2
inches in diameter. Typically found in stairwells
Class II Standpipe Right Ans - Hose is 1 1/2 inches in diameter. For
occupants in the building and intended for all spaces in building. Typically
found in cabinets and spaced according to the hose length.
Class III Standpipe Right Ans - Both firefighters and occupants. Adjusts to 1
1/2 or 2 1/2 in diameter.
How far from electrical power lines must a scaffold be? Right Ans - 10 feet
The refuge area must have a fire-resistance rating of at least how much?
Right Ans - Minimum one hour fire resistance for walls protecting refuge area
from inside of building
Standpipe System Right Ans - An arrangement of piping, valves, and hose
connections installed in a structure to deliver water for fire hoses.
Metal Fume Fever Right Ans - What results from the inhalation of fumes,
like iron, nickel, copper, zinc. Often results from welding without proper
ventilation/respiratory protection. Resembles flu like symptoms
Symptoms of Metal Fume Fever Right Ans - Flu like symptoms such as
headaches, fever, chills, muscle aches/weakness, thirst, nausea, vomiting,
chest pain, fatigue, stomachaches.
Employees who work with what substance(s) tend to have higher incidents of
Metal Fume Fever? Right Ans - Zinc Oxide, Chromium (stainless steel),
nickel, manganese, cobalt, lead, arsenic, copper platinum, selenium, gold and
silver
What can prevent Metal Fume Fever? Right Ans - local or exhaust
ventilation and personal respirators
, What are the safe operating procedures for utility and service lines PRIOR to
demolitions? Right Ans - 1. Conduct survey report
2. Document specific hazards
3. Evaluate utility functions servicing the building
What utilities must be cut PRIOR to demolition? Right Ans - Electric, water,
gas, sewer and any other service
What should the (preliminary) demolition survey report include? Right
Ans - 1. Whether there are dangers posed to workers
2. Whether there are dangers posed to the environment
Ex: Chemicals, gases, explosives, flammables, or any other hazardous
materials in storage tank(s)
When can materials be dropped through floor openings? Right Ans - 1.
When the drop area is completely enclosed and barricaded.
What requirements must barricades meet before material can be dropped
through floor openings? Right Ans - Barricades must be at least 42 inches
high and no closer to the drop area than 6 feet.
At what height must a chute be used when removing waste from upper levels
of buildings? Right Ans - 20 feet
What requirements must chutes meet when they are used to remove waste
from upper levels of a building? Right Ans - Must be made from wood or
alloyed metal. Chutes must be securely anchored.
Should glass windows be removed PRIOR to demolition? Right Ans - Yes,
when there is a concern regarding workers exposed to broken glass.
What is an exit discharge? Right Ans - An exit discharge leads directly to an
outdoor area or street
What is an exit route? Right Ans - An exit route DOES NOT NECESSARILY
lead out into an open area, yard or street. Exit routes often lead to refuge
areas.
