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Safelincs

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Posts posted by Safelincs

  1. Hi Michelle

    The trend is to move away from powder extinguishers indoors (although I have heard that there is an attempt to re-introduce them for some indoors applications in the standards), as the powder can be inhaled, reduces visibility and makes a mess. However, powder extinguishers don't have to be replaced before the end of their serviceable life. When it eventually comes to replacement it depends what your rooms contain. CO2 extinguishers have only a very narrow application and not great for general fire fighting, so if you have an office or retail application you would be better off with foam extinguishers that have been di-electrically tested or a water mist with de-ionised water. Both can be used on live electrical equipment up to 1000 Volt.

    Harry

  2. Hi Michael, if collateral damage is key then water mist is the best bet. While powder is still the most commonly used extinguisher for engines, the water mist will deal with the flames and cool down hot surfaces that could re-ignite the fuel. However, 1.4ltr seems insufficient. I would go for two small units (assuming it's a small engine). They are easier to handle and store.

    Harry

  3. Hi Susan, If it is not the battery or other devices in the room it might be that the alarms are contaminated by dust (eg if they are the optical version) or simply faulty. Next step should be to check whether the alarms are still under warranty and to contact the manufacturer.

    If all else fails the affected alarms need replacing. There are Deta replacement smoke alarms available. There are manufactured by the OEM. 

    Harry

  4. Hi Mark, assuming this is the standard base plate of the Ei series, there is no sounder in the base plate. So the sound is likely to come from a CO alarm with a dying battery in the vicinity. 

    Maybe in a drawr or similar. It is very difficult to spot the source of an occasional beep.

    Harry

  5. While Ionisation alarms on landings give you a minute speed advantage in detecting finer traces of fires, there is no issue with using optical alarms on both hallway and landing. Ionisation alarms are being phased out, as they contain radio-active components.

    Harry

  6. Yes, we have heard this numerous times. The process of laying screed seems to generate a gas that triggers CO (carbon monoxide) alarms. That does not necessarily mean that it actually is CO, as some other gases can affect CO alarms (eg hydrogen from re-charging lead acid batteries). Airing the building til the floor is fully dry and cured should hopefully resolve the issue.

    I don't think you have reason to withhold payment. The screed company has not done anything wrong. 

    Harry

  7. Hi Adrian, not sure if have understood the full picture. However, if you are looking for a concealed fire door closer that offers protection from the user being trapped by the fire door, I could recommend the Powermatic from Perko. This fire door closer is concealed but more importantly is a free-swing door closer which allows the fire door to operate like an ordinary, closer-free door. When the fire alarm system trigger the fire door is of course shut automatically. 

    Harry

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