320-03 Carbon Monoxide step-by-step (attachment D)

A procedure for investigating a carbon monoxide (CO) alarm where occupants have been in contact with the potentially contaminated environment, but there is no known source of the CO.

Crews wearing full protective equipment, SCBA, and a Drager 2500 gas monitor will enter the structure, monitor the atmosphere, locate the source of CO, and ventilate the structure until CO levels reach 0 ppm.

The process of removing a potential source of CO from the structure to the outside, if possible.

An emergency response procedure for a carbon monoxide alarm where there is no contact with occupants.

The process of contacting occupants through neighbors, key holders, or alternative phone numbers in a CO alarm with no occupant contact.

The process of transitioning a CO alarm incident with reported exposures to a full-scale emergency response involving a Battalion Chief, EMS Captain, and the closest Rescue unit.

The evaluation of CO levels in the blood (carboxyhemoglobin) using a rainbow sensor.

A post-fire air quality assessment to check for the presence of CO, HCN, and OV gases in the affected unit and adjacent units.

Informing occupants about the potential source of CO, the atmospheric monitoring procedures used, and recommending they contact a qualified contractor for further inspection and repairs.

Using a Drager 2500 gas monitor to measure CO levels in the affected area and ensuring they reach 0 ppm before allowing occupants back in.

Crews enter the structure wearing full PPE, SCBA, and using a Drager 2500 gas monitor to locate the source of CO and monitor atmospheric conditions.

Assessing and ruling out alternative sources of gas like hydrogen from golf cart battery charging or electric wheelchairs, even though the procedures remain the same as for CO.

Crews will attempt to make contact with occupants through neighbors, key holders, or alternative phone numbers.

Crews will attempt to take CO readings from outside, especially through crevices and openings.

If possible, crews will enter the structure without causing damage or with minimal damage.

Crews with full PPE, SCBA, and Drager 2500 gas monitor may enter using forcible entry when applicable, and search for victims.

The officer will notify dispatch of 'all clear' within the structure or initiate medical assistance as needed (Follow CO Protocol).

Firefighters use special monitors (4Gas or 5Gas) to detect the presence of dangerous gases like CO, HCN, and OV. If any of these gases are found, they must wear full protective gear (PPE) and self-contained breathing apparatus (SCBA) during post-fire operations.

Even if the monitors don't detect any dangerous gases, it's essential to wear a half-face mask with an OV cartridge for protection from undetected toxic vapors that might be present. The fire-affected structure will continue to release gases long after the fire is out.

If the monitors show no dangerous gases and only oxygen (O2) at a normal level (20.9%), firefighters can wear half-face masks and OV cartridges for continued protection against unseen vapors. However, they should be aware that the structure will continue to release gases for several hours.

Ventilating a burned area can help clear out dangerous gases. It is a crucial step in post-fire operations.