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FIRE SERVICE AND GENERAL FIRE SAFETY TOPICS => Fire Safety => Topic started by: Mr. P on May 01, 2009, 11:46:40 AM

Title: Low dB level
Post by: Mr. P on May 01, 2009, 11:46:40 AM

Recently involved with a refurbishment. Client had AFD overhauled (part new system). My part involved representing for hand over and acceptance at completion of works. Pre test of AFD, the *** engineer told me the dB levels were too low in 2 rooms. When I asked why he hadn't rectified this, he said it was not up him! We confirmed by test low dB's. and client has since changed to multi heads det/sound.. job done.  I told client not to pay for this part as original requirement was quite specific to meet all parts of relvant BS's. To top this, sounders emitted dig=fferent tones in different parts of build !!! Who approves these people from supposedly reputable wid known company?

Title: Re: Low dB level
Post by: Thomas Brookes on May 01, 2009, 01:16:15 PM

Don't even go there!!.

Title: Re: Low dB level
Post by: Graeme on May 03, 2009, 03:02:54 PM

there are loads of crap engineers that hide under the national umbrella.

not all of them but a they are out there for sure.

Title: Re: Low dB level
Post by: David Rooney on May 03, 2009, 09:28:24 PM

Not knowing all the facts.... but to be fair it isn't necessarily down to the commissioning/handover engineer to put such defects right, it should have been reported back to the designer prior to handover for rectification.

Title: Re: Low dB level
Post by: Mr. P on May 05, 2009, 08:11:41 AM

David, the engineer did not bother to report it back.  I asked for the a copy of the design, which could not be produced (there's a surprise). I think it was a case of 'here looks ok' on instal. Still - Hey Ho!

Title: Re: Low dB level
Post by: Galeon on May 05, 2009, 09:17:28 AM

Nothing strange here , you are either the school of lets try and put the right amount of sounders/bells in and get it right first time , or lets whack 3 in and see what happens .
When it fails you need more alarm bells sounders Mr Customer .

They then produce a lovely section of document that tells the customer why they cant guarantee the sound pressure levels .

Which is fair enough as it sometimes a bit trick dependent on the situation , however by installing sounders in an open area and whacking them up full belt , to try and compensate for other areas is not on.

Good even distirbuted sound is what should be designed from the start .