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Fire extinguisher question

Is it a local thing that these are suppose to be checked annually and tagged (runs $10 each) or is this rather universal in all jurisdictions? And why if the gage is reading "full charge" do they have to checked? Maybe a big fire protection lobby at the state capitol? Just doesn't make a whole of sense to me? If there is concern that the gage might not be correct why don't they go after the gage manufactures?
Comments
Same monthly maintenance applies to your car fire extinguisher. The bumps, jolts and vibrations in the car will settle the retardant. I flip and shake mine up once a month.
As an X-fire fighter I can tell you It's not a Scam. Depending on the retardent, some will settle and "Cake" over a period of time rendering them to about half of it's usefulness. Recharge every 2 years is good and flip them upside down on occasion and shake them.
Thanks for the tip,,[:)][:)][:)]
The number & type of fire extinguishers depends upon the occupancy, hazard, & size. And, they periodically require hydrostatic testing.
Theoretically, dry chemical agent can cake, so shaking them when performing the annual inspection is always done. I've set off extinguishers that were not moved for 30-40 years, & they worked fine.
Dry chemical agent is corrosive; everything electronic in the area where you use one has to be discarded ---- fridge, range, microwave, TV, computer, etc are toast.
Neal
Re: ABC dry chemical extinguishers- Most are filled with tri-ammonium phosphate, not baking soda. Puts out fire by powder fusing, forming coating that cuts air off. For a cooking (grease) fire, baking soda works better.
Extinguishers need to be serviced (inspected) annually. For dry chems, every 6 years, emptied and refilled, every 12 yrs, emptied, hydro tested, refilled. Usually cheaper to replace than refill.
ABC dry chem will kill a computer, server, etc. They make clean extinguishers to protect that stuff. Pricy, but so is a computer server.
National Fire Protection Assoc. sets standards for extinguishers. Local fire code (nd your insurance company) will want to see service done. Worth the bother- every year we will find a couple (out of 200) that have leaked down, been damaged or missing. Do not want to lose a $500K drill rig for lack of a working $40 extinguisher.