Kamis, 15 Agustus 2013

What is an acceptable Carbon Monoxide level in a home?

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mememe


I have a detector in my bedroom that reads 17. I assume that's 17 ppm. Is that an acceptable level?

I checked it a week ago and it was at 17. After resetting it, it still reads 17 so I think there is a consistent amount of carbon monoxide in the room.

Any help would be appreciated.



Answer
"Standard for Action Levels
The following action levels have been defined as minimums for BPI certified Carbon Monoxide Analysts. Analysts may work for a government agency or business entity that has adopted more stringent standards than the ones defined in this document. As such, CO Analysts may enforce those higher standards. Under no circumstances shall a BPI certified CO Analyst recognize less stringent standards or ignore conditions in excess of the defined action levels. The action levels are considered net indoor ambient readings - i.e. - indoor ambient minus outdoor ambient readings.

0 to 9 parts per million (ppm)
Normal - No Action: Typical from: outdoor sources, fumes from attached garages, heavy smoking, fireplace spillage and operation of unvented combustion appliances. With ambient conditions in this range, analysts may continue testing sequences.

10 to 35 parts per million (ppm)
Marginal: This level could become problematic in some situations. Actions: Occupants should be advised of a potential health hazard to small children, elderly people and persons suffering from respiratory or heart problems. If the home has an attached garage, document CO levels in garage. Accept this level as normal for unvented appliances but not for vented appliances. If unvented appliances are in operation, recommend additional ventilation in the areas of operation. With ambient conditions in this range, analysts may continue testing to locate the CO source.

36 to 99 parts per million (ppm)
Excessive: Medical Alert. Conditions must be mitigated. Actions: Ask occupants to step outside and query about health symptoms. Advise occupants to seek medical attention. If occupants exhibit any symptoms of CO poisoning, have someone drive them to a medical facility. Enter the building, open doors and windows to ventilate the structure. Turn off all combustion appliances until the CO level has been reduced to safe levels. If forced air equipment is available, continuos operation of the air handler is recommended at this time. If the home has an attached garage, document CO levels in garage. Test combustion appliances one at a time to determine the source of CO production. If an appliance is determined to be the source of CO production, it should be shut off and not used until a qualified technician with proper test equipment can service it.

100 - 200 parts per million (ppm)
Dangerous: Medical Alert. Emergency conditions exist. Actions: Evacuate the building immediately and check occupants for health symptoms. Advise all occupants to seek medical attention. Occupants should have someone else drive them to a medical facility. If occupants exhibit symptoms of CO poisoning, emergency service personnel must be called. Evacuation is important, but Analysts must not subject themselves to excessive conditions. Maximum exposure time is 15 minutes. Open all doors and windows that can be done quickly. If the home has an attached garage, document CO levels in garage. Disable combustion appliance operation. Continually monitor indoor ambient levels while moving through the building. Once the atmosphere within the structure has returned to safe levels and the appliances have been turned back on, locate the source of CO production for corrective measures.

Greater than 200 parts per million (ppm)
Dangerous: Medical Alert..."

Hope that helps

Carbon Monoxide and Smoke Detectors going off?




mac


Today, mainly the carbon monoxide detectors have been going off but a few of the smoke detector in my house keep chirping every now and then. It was quiet for some time and know there going on and off about every 30 seconds. I have never heard the the carbon monoxide detector in my life! is there any danger, are they malfunctioning, should i step outside of the house or are they just old and need new batteries. please help, especially if you have experience with this, thanks!


Answer
Combination of previous answers. There are 2 sources of carbon-monoxide in your home, your car running in the garage, or a malfunctioning furnace or water-heater. Obviously if your car is not running in the garage, you can rule that one out. If you don't have gas appliances you can rule that one out. If you do have gas appliances, call the gas company or fire-department to come inspect your home. You can smell the natural gas that runs the appliances, but you can't smell the exhaust from the appliances. Carbon-monoxide detectors don't detect natural gas leaks, they detect an exhaust leak. Side-note: Natural gas is odorless too, but the gas company adds that funky smell to it so leaks can be detected. It is recommended that all your smoke and carbon-monoxide detector batteries be changed once a year to keep the units serviceable. Another side-note, and maybe the first thing you want to try; the carbon-monoxide detectors are more ultra-sensitive than the smoke detectors so they tend to give false readings more quickly from common dust particles in the air. If you have some compressed air like in a can of computer keyboard cleaner, squirt some of that into the CM detector and see if that shuts it off. Chirping is an indicator that your batteries are going dead.




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