Wednesday, January 5, 2011

Smokin'!

Hello,
My name is bwings and my roof is on fire!
I don't need no water let the ... oh... well....censorship and all. *ahem*
Sorry, got a little carried away. I haven't checked my smoke detector because I know it isn't broken and it isn't due to be replaced for another 10 years. However there are some facts about your smoke detectors I feel you might want to know.

Although it is common knowledge and there are certainly enough warnings, as is required by law, I'm sure at least 60% of my readers are unaware of radioactive material in their home. Hmmm I just heard at least a few jaws drop, don't worry, it's not deadly....sort of. If you take your smoke detector down, assuming you even leave it up, and look at the bottom you might discover some warning signs. "Contains Radioactive Material", "Warning radioactive material" and most importantly "Return to supplier or department of health for disposal"

As long as you don't take your detector apart, severely damage or crush it you will be fine as the small amount of radioactive americium is contained securely inside. The radiation is also predominantly alpha which can not penetrate paper. The thing that concerns me is the disposal and possible resulting damage and compromising of the beta particles. I'll admit I haven't looked into proper disposal of my batteries I just toss them in the trash. I know this is wrong and I keep meaning to make an effort to correct this. Instead, my main effort, has been in the reduction of my battery trash. I have rechargeable batteries for all heavy electronics and even my wii balance board uses a modified piece that charges through the usb port in your computer. Instead of tossing out 4 AA batteries every time I just disconnect and charge.

The idea of radioactive material laying improperly disposed in the waste land does concern me a little more and so in 10 years time (although I hope to not be in this present location by that time) when I need to replace my detector I will be contacting the manufacturer of the alarm. Unfortunately it may be the case that you would have to pay the postage to send the detector but this may differ per company. I'm sure there are at least some who will send you a box to send the detector back in. There should be a telephone number on the bottom of your detector that you can call to find out this information.

Don't necessarily run out and replace your ionizing smoke detector with a photoelectric detector as there are differences.

An ionizing detector is that annoying apartment detector that goes off when you're having your shower, this is because the ionization detector can detect slight alterations in the atmosphere such as steam or combustion gases produced by an open flame. This makes it more sensitive to open flame fires than a photo-electric detector.

There have been studies to determine the more common causes for false/nusiance alarms. Findings in Woodlands, Texas from 1970 found the most common causes to be: Cooking (30.4%). Mechanical/Sensitivity (24.2%,. Fireplace (21,6%). In  Maryland, Texas 1984 another study found similar reasons but a tendancy for cooking to be the problem. Their findings were cooking (72%), Fireplace (7%). Steam (4%) and more recently in Devils Lake Sioux Reservation again it was found that cooking was the main cause at (76.7%), Steam from bathroom came in at second (17.8%), followed by Cigarettes(5.5%)

I first heard of the steam situation from two tenants when I first became a landlord. I had never heard it before and were it not for the honest reputation of these tenants I'd have smiled, nodded and went on my way. To this day I have never had my smoke detector go off from my shower or, as some stated they had, boiling water on the stove. So what makes it happen? Condensed steam from sources such as showers, kitchens (tea kettles), laundry rooms, sterilizers, humidifiers etc. would be viewed and register with the detector as being white smoke. If it's a heavy steam it will even set off a photoelectric smoke detector, think fogged up sauna's, you wouldn't want a smoke detector in there.

In summary, the comparison between the two main types of smoke detectors shows the main differences are the type of fires they are better at detecting. Ionization detectors are best at detecting smoke from an open flame fire while photoelectric are best for smoke from smoldering fires where there is enough heat to create smoke but no flame. If anything I would say you'd want one of each but the fire departments say either or works just fine. All the same, before tossing yours in the trash, phone the number on the back or bottom and see about returning the americium for proper disposal.

Until then, everybody wave your hands in the air, like you just don't care...the roof...the ...umm...sorry.

Your friendly neighborhood hippie mom.

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