green-foam
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Posts posted by green-foam
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On line surveys such as yours do not give good results, since you can "adjust" the way you look at the figures to give the results you want.
I wish you luck with your project, but ask yourself this.
At the end of the day, can you really make a better smoke detector that is affordable? If its not affordable it will be a "gimmick"
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It's interconnected to two other smoke alarms of different manufacture.
NEVER interlink mains smoke detectors that are from different makers. Change them ALL to the same make, even the the first two you already had.
When a mains interlinked smoke alarm fails, you should only replace it with one from the same maker.
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To add to what Tom said, if the fire brigade were called (and it was a genuine fire) who is to tell them that there are people still sitting in the building (not to mention the residents) it can't be you because you are still sitting in the building waiting for.......
Yes, it can be a "pain" if you have to evacuate a building, but, is it not better to get out and find its a false alarm or would you rather stay inside and find out that one day its a real fire.
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There is no regulation as to which circuit it is connected to, however if it is connected to its own MCB there is the possibility that some one will turn it off. They will not do that if it is connected to the lighting circuit.
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As Tom said, sprinklers are to protect against fire when the building is un-ocupied. By the time sprinklers activate the fire has to be "reasonably big*" where as if a member of staff sees the fire first, they can use an extinguisher which in turn will stop a small fire becoming a big fire, saving both time and money.
I would suggest that staff should also be given basic training on how to use portable fire extinguishers.
* Depending on location of sprinklers.
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The air temperature at the sprinkler will have to be above 56 degrees centigrade. If your steamer and hot plate can do this then yes it will set it off.
Being as its steam, I would suggest when in use you keep a couple of windows open to prevent mould growth.
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Right I'm not a scientist of rockets here……..but how can my alarm be disconnected from the power supply and have the battery removed and yet still it is beeping at me every 40 or so seconds!!!
If there is no source of power at all………….how can that possibly be?
As Harry says, and you (Yer ma) have said, it is not possible for a smoke alarm to make any noise for any reasonable length of time with out some sort of power supply.
I have to agree with Harry, you have another detector somewhere nearby (may not be a CO detector) that has a low battery. My personal favourite is one put in a drawer and never fitted, but still with battery installed. I have also heard of them being "put down" on the top of a cupboard, and forgotten until..............
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You may also like to see video clips of complete discharge of some portable fire extinguishers, Click here
However, do bear in mind the video's show just the duration of the discharge, when fighting a fire, often it can be extinguished in 10 - 20 seconds of actual discharge. (Most "modern" fire extinguishers have a lever which stops discharge when released.)
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Only new builds must have a mains operated smoke alarm, a battery operated smoke alarm is acceptable.
I should also point out that being a maisonette you do not have a communal stair way, so a fire alarm Is NOT required.
You could ask your landlord to fit a mains operated smoke alarm, but even if he does, it would be up to YOU to test it on a regular basis. You would not want your landlord coming round once a week just to press the smoke alarm test button would you?
If you do wish to ask your landlord, I should point out that you should ask for a "mains smoke alarm" NOT a "mains fire alarm" as the they are very different.
Safelincs can supply mains smoke alarms from only £17.75 Click here
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Alex, what country are you based in?
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I would guess that it is an incompatibility between the two detectors.
From what you have said you have two different brands of device. I would suggest you change either one or both so that they are the same make / model
As they are due to expire in 2016 you could change them both now. Safelincs do supply mains (with battery back up) smoke alarms for around £20 Click here
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Sorry, and your question is .............
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If they are "nearer to the ground" they would be more likely to be damaged.
Also would it not "be the norm" that everyone gets out before the smoke reduces visibility, and the natural reaction of Joe public would be to run, so again, a sign low down would be of no use.
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I have to agree with Harry. The "Bit on the ceiling" is just a connection / mounting plate, it has no other function. Below is a video from Safelincs, showing how to remove the detector from the base.
https://www.youtube.com/watch?v=7AQvjqhnHTE
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I have two sofas which were made for my mother in about 1975. I want to sell these on eBay.
I have just looked on said auction site, most sofas that came up are less than 1 year old, I did search again for very old sofas, one was going for 99p another for £10, and no bids on either, my point being (sorry to say this) I don't think they will sell even if you had a label.
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I would suggest you ask the local council what they specify.
Most EM lights are fed from the nearest normal lighting circuit in twin and earth. Its pointless wiring non-maintained, standalone EM lights in fire resistant cable as this is self defeating, in that if there is a fire the cable will not melt, so the supply to the light is still maintained, so the light will not illuminate.
Since the idea of a test switch is to remove the supply from the EM light it would be advisable to have a test switch near each EM light, other wise you could have a large lighting load going through one EM test switch
You could have all the EM lights on the same circuit all connected via twin and earth back to the consumers unit and have one test switch, but this means the CU would have to loose power for all the lights to illuminate. (It would also cost more due to the added expense of more cable) where as if each EM light is connected to the "local light" if this fails then the EM light will illuminate.
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Just curious Tom.
How can an item of furniture made in the 70's have a label for a regulation that came into being in 1988?
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Peter
The charity shops are just "covering all bases" by refusing to take the furniture.
It could be a piece of furniture had a label which has since been damaged, but as it can not be read, it will be deemed to have no valid label.
Yes it is a shame that they will not take the furniture, but as a private individual you can dispose of it privately. So you could advertise it in your local paper as a "free to collector" item.
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I believe that as they are in your flat (not the communal area) it is up to you to test them.
Ideally you should test them once a week. You test them by pressing the test button.
Once every 6 months you should clean them (Run a vacuum cleaner around each one)
Once a year change the battery unless it has a sealed in X year life battery. Most "mains supplied" smoke alarms have a back up battery.
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Get a CO detector and install it near the boiler.
I would suggest you do not get an interlinked CO detector as if CO is detected any other interlinked smoke alarms will NOT sound, how ever if smoke is detected by a smoke alarm the interlinked CO alarm will sound. This is so that you can distinguish between smoke and CO
You can get one from Safelincs Click here
I would suggest you also consider an Emergency light, as there is a boiler in the loft and you are looking at it and the lights fail, how will you see to get out to investigate why the lights went out?
You can get one for less than £20 from Here
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If when you swap them over the fault stays where it is, then I would have to ask have you checked to see if the incoming mains cable connections are tight? SWITCH OFF the electricity FIRST
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There is a number of agents that can be used as a replacement for Halon and the best one will depend on the individual risk, the volume of the area in question etc.
Dependant on the current installation , existing pipe work and discharge equipment will normally have to be changed due to pressures, fluid flow rates etc.
CWEENG, I believe you have miss-understood / miss-read the question.
Sorry but Tom Eddl said
As Station Manager at an Airport with approval to retain Halon extinguishers until 2016..............What quantities would I need to equate a 9kg BCF
Which to me means, he is the fire station manager at a working airport, and currently has the option to use portable BCF fire extinguishers, of which he has at least one 9KG BCF, he seems to be seeking a replacement for this 9KG BCF portable extinguisher (or maybe he has more than one) he does not seem to be looking for a replacement for a fixed installation system.
But perhaps you can confirm or deny the following.
As a rough estimate, you need 1.5 times as much "halon replacement" as you do halon 1211, which would mean that for a 9kg BCF you would need a 13.5 KG extinguisher, But they do not make a portable halon replacement extinguisher in that size.
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No offence to Tom, but I suggest to anyone reading this ignore what that website says, It has miss-information on several articles, how a smoke detector works being one of them.
Optical smoke detectors do NOT work by smoke breaking a beam. The opposite is infact true.
Inside an optical smoke detector is an infra red LED and an Infra red receiver.
The Infra red LED does emit Infra red light, but it is NOT pointing at the receiver, the two are at right angles to each other. (See the video clip below)
When smoke enters the detection chamber it scatters the light, this is then detected by the infra red receiver, the detector then goes into alarm.
You can clearly see this layout in a commercial smoke detector, it is bigger, so easier to see, but it works the same way (Large grey object on the right, and large black "lump" on the left.)
http://www.youtube.com/watch?v=sI2Y9AhDv6k
There is a smoke detection method that relies on smoke obscuring an infra red beam, but it is to cover large roof areas, and the units are too big to fit inside a smoke detector.
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If they are beeping with no batteries in them and no mains I would suggest you look in the kitchen drawer or on top of a cupboard because there is another one you do not know about.
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Emergency lights are designed to constantly trickle charge the standby batteries so the "charging light" will always be on.
If as you ask could the light not turn off when the batteries are charged, I would have to say (Not wishing to be pedantic about it) Suppose when the batteries are 100% charged the "charging indication light" switches off, at what point would they start charging again? 75% or 50% or 25%
No matter what the % of under 100% is, the light can not last the minimum 3 hours duration unless the battery is fully charged.
Also if the charging light was not on, how would you know if the unit was charged or being charged?
Green light not working/no mains power to smoke alarms
in Smoke Alarms
Posted
I would suggest that there being "no obvious connection in the fuse box" is because they are connected to a light / light circuit.
This is considered a good idea, since if there is a problem with your smoke alarms you can not turn them off at the "fuse box"
By connecting them to a lighting circuit you will not deliberately turn your lights off at "the fuse box" so the smoke alarms are always powered up.
I would guess that if as you say the first two devices have a green light lit then as they are interlinked, the first place to check would be the 2nd of the two smoke alarms.
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If it helps, Interlinked smoke alarms are wired as follows.
Mains to first smoke alarm.
Mains and interlink from first smoke alarm to second smoke alarm
Mains and interlink from second smoke alarm to third smoke alarm (etc)
The last smoke alarm only has the mains and interlink.
So if a number of interlinked smoke alarms do not indicate they have mains, but some do indicate they have mains, the first place to check is the last smoke alarm that has mains.
I personally have a "feeling" it is to do with the fact you have 2 different makes of smoke alarm.