26 Questions
What is the purpose of the policy outlined in the text?
To establish protocols for monitoring CO and HCN at structure fires
When should members remove their self-contained breathing apparatus (SCBA) at a structure fire?
After the fire has been knocked down
Why should gas detection meters not be exposed to active fire conditions?
Because exposure to heat can damage the instruments
What should members utilize for monitoring at structure fires according to the text?
Department-issued gas detection meters
Who determines when structural firefighting personal protective equipment (PPE) can be removed?
Incident commander
What are the symptoms of acute exposure to HCN?
Weakness, headache, confusion, and vertigo
What may indicate that respiration has ceased or been inadequate for a few minutes?
Cyanosis
What is the half-life of HCN?
One hour
What symptoms may occur after chronic exposure to cyanide?
Dermatitis and itching
What changes have been produced by long-term exposures to cyanide?
Thyroid changes
What is the recommended action if firefighters are found to have been operating in an IDLH atmosphere without SCBA or experiencing severe health effects?
Immediate medical evaluation is strongly recommended
What is important when transporting the exposed firefighter to the hospital?
Advise the hospital about the presence of CO and HCN in the hazardous environment
Where can information about Hazardous Substances Data Bank for Hydrogen Cyanide be found?
National Library of Medicine (NLM)
What is the half-life of HCN?
One hour
What should be done if a company with an HCN meter is not on the scene?
Request a unit with a meter to respond
What is the short-term exposure limit (STEL) [skin] for HCN?
4.7 ppm
When should SCBAs be utilized based on CO levels?
When CO is detected at 25 ppm or greater
What should be done if an operational HCN meter is not available at the scene?
Readings of 20 ppm or lower of CO are required in order to operate without an SCBA
What are the signs and symptoms of acute exposure to CO?
Headache, flushing, nausea, vertigo, weakness, irritability
What is a characteristic of HCN exposure?
Causes rapid death due to metabolic asphyxiation
What information should be supplied when reporting HCN exposures?
Areas monitored with corresponding readings
When should field decontamination of PPE/SCBA be done?
Once an incident is under control
What should happen if turnout gear has a reading higher than 5 ppm CO?
The gear should be cleaned again using an approved gear extractor
"What is important for members to do prior to drinking and eating in Rehab?"
"Practice good personal hygiene by washing hands"
What does CO combine with to form carboxyhemoglobin?
Reversibly with hemoglobin
When should SCBAs be utilized based on HCN levels?
HCN is detected at 2 ppm
Test your understanding of the standard operating procedures for carbon monoxide and hydrogen cyanide monitoring at structure fires as outlined in the Fresno Fire Department's SOP manual. The quiz covers important policies and guidelines for FFD members.
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