// CODE SNIPPET
D.2 Occupant and Inspector Safety
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Prior to entering a
building, the inspector should have both a combustible gas
detector (CGD) and CO detector turned on, calibrated, and
operating. Immediately upon entering the building, a sample
of the ambient atmosphere should be taken. Based on CGD
and CO detector readings, the inspector should take the following
actions:
If during the inspection process it is determined a condition exists that could result in unsafe appliance operation, shut off the appliance and advise the owner of the unsafe condition. Where a gas leak is found that could result in an unsafe condition, advise the owner of the unsafe condition and call the gas supplier to turn off the gas supply. The inspector should not continue a safety inspection on an operating appliance, venting system, and piping system until repairs have been made.
- The CO detector indicates a carbon monoxide level of 70 ppm or greater1 The inspector should immediately notify the occupant of the need for themselves and any building occupant to evacuate; the inspector shall immediately evacuate and call 911.
- Where the CO detector indicates a reading between 30 ppm and 70 ppm1 The inspector should advise the occupant that high CO levels have been found and recommend that all possible sources of CO should be turned off immediately and windows and doors opened. Where it appears that the source of CO is a permanently installed appliance, advise the occupant to keep the appliance off and have the appliance serviced by a qualified servicing agent.
- Where CO detector indicates CO below 30 ppm1 the inspection can continue.
- The CGD indicates a combustible gas level of 20% LEL or greater. The inspector should immediately notify the occupant of the need for themselves and any building occupant to evacuate; the inspector shall immediately evacuate and call 911.
- The CGD indicates a combustible gas level below 20% LEL, the inspection can continue.
If during the inspection process it is determined a condition exists that could result in unsafe appliance operation, shut off the appliance and advise the owner of the unsafe condition. Where a gas leak is found that could result in an unsafe condition, advise the owner of the unsafe condition and call the gas supplier to turn off the gas supply. The inspector should not continue a safety inspection on an operating appliance, venting system, and piping system until repairs have been made.
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