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What is the code for the distributionfire of fire detection sensors in electrical substations?
33 kv switch rooms are to be furnished with fire detectors (smoke, flame, MCP,..) how many, topology and distribution, and what type of detectors to be used? Well, I am not sure about "specifics" for that particular hazard, but NFPA 72 outlines the applications and use for all fire detection and alarm equipment. NFPA 850 is the "Recommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current" I would think I would start by at least including basic smoke detection with either spot or projected beam smoke detection. I have used the beam detectors in large switch rooms before. They seem to work well because they can cover such a large area. We have done a number of smaller "enclosed" stations with just a few spot photoelectric type smoke detectors. todvango | Read more What is a Fire Detection and Alarm system write-up? Can some one explain what will be the contents of a FDAS System write up document? What are the mandatory information needed and what optional info can be given? I would be happy to recieve a brief reply from a person working in this area. Is a "write up document" a specification? CSI MasterFormat Division 13, Special Construction, Section 13850 Detection and Alarm deals with the specification of Fire Alarm, Gas Detection, Leak Detection and Smoke Alarm systems. Here is an example specification 13850 for a Fire Detection and Alarm System http://www.notifier.com/ahj/specifications/nfs2-3030-w-digital-audio-spec.pdf Note: I am not a fire protection engineer. Lawrence | Read more How to divide Zoning a chemical industry for installing Fire and Gas Detection? Nice English. How can I answer best your industry of chemical gas and fire question divide zoning? Sorry. I couldn't resist. Seriously speaking... Fire and gas detection are two different things. Fire detection can be accomplished with smoke or heat detection. Linear heat detection may work well depending on your application. If ultra-quick responses are impertative, than infrared or ultraviolet based flame detection may be in order. Gas detection is accomplished by using catalytic bead sensors either high in the room or low along the floor depending on if the gases you are trying to detect are lighter or heavier than air. Spacing of the detection should pay attention to the storage, but manufacturer's recommendations should be followed. One thing for sure, it's not every 130 sq. in. (that would be 1 detector every foot!) I don't think you need quite that many! todvango | Read more Does anyone know where I can find the regulations for fire detection systems in an oil and gas facility? I work in a very large oil and as facility. We frequently have X-Ray inspection of many of our piping system during which the entire facility is required to shut off its fire detection systems leaving the plant open to severe risk. I would like to submit a concern about this, but I can not find any regulations governing fire fire detection systems. Does anyone know what CFR or OSHA regulation would cover the requirements for fire detection systems? I have looked through the CFR's and can't find anything that says anything about disconnecting fire detection systems. Thanks for your help! if it involves maintenance,they do what they want. I worked at a Unocal refinery for a little over 10 years, and, yes, x-rayers can trigger false alarms,but only infrared, and UV detectors. At the refinery, they have "procedures", and "protocols" for different situations. Like, if a unit is running at capacity, they'll have a fire watch(a guy with a hose) on standby during x-raying, I think a lot has to do with the auto-notifier that goes directly to the F/D, and when they get a refinery alarm, they bring a whole lota stuff, and if its cause of x-rayers,and no fire they get kinda pissy, something about, "entrence fees, meaning, if they respond to an alarm, and don't get let in the gate, they can't charge. But,if the guard lets them in, and its a false alarm, the plant gets charged a whole lota dough, like, 10's of thousands. Even though the plant has its own F/D, trucks and all, the city still has to respond, but, they don't have to be let in. unless, its an actual fire, even though, the in house fire guys have the last say. I'm pretty sure some government agency has some kind of regulation about it, but the oil companys, pretty much write their own rules, and they have the money to do it. I,m assuming you work at a pump rack, so you are probably familiar with the "deluge", its amazing how much water comes out of those things, I got to do the simi-anual detector tests at the truck and rail loading racks. Had to notify the boiler plant, before the tests, because of the tremendous pressure drop, it would set off alarms on the boiler control panels. There were 27 detectors, and each one had to be tested, reset, test the next one, etc. And some of them I had to be directly under with the UV gun, and get out before the valve slamed open, it dumps like 500,000 gal. in the first 4 seconds,I've heard storys about how hard it can knock a person to the deck, but never witnessed it myself. Anyhoo, swing by your local fire station one day, and ask the capt., they love talking about that kinda stuff Joe Blough | Read more |
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