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FIRE SERVICE AND GENERAL FIRE SAFETY TOPICS => Technical Advice => Topic started by: Benzerari on November 02, 2008, 04:44:43 PM

Title: VSD systems
Post by: Benzerari on November 02, 2008, 04:44:43 PM

Have a look, and see why in UK it doesn't work?

http://www.youtube.com/watch?v=ZkrvIEv0C9A

Also this:  http://uk.youtube.com/watch?v=NhXd5PNr5O4&feature=related

Title: VSD systems
Post by: colin todd on November 02, 2008, 07:18:31 PM

Why doesnt it work in the UK???? Surely it already does.

Title: VSD systems
Post by: kurnal on November 02, 2008, 07:36:15 PM

It  certainly does.

I have worked with these people and in the right situation it works very well indeed.

http://www.dtec-fire.com/

Title: VSD systems
Post by: Benzerari on November 02, 2008, 07:41:36 PM

The last time I heard about its application in underground London, it wasn't really successful!

Why?

I don’t know! :)

Title: VSD systems
Post by: colin todd on November 02, 2008, 07:57:11 PM

The problem I believe was the difficulty of pattern recognition in the circumstances in question. But the technique has been established for some years and has been recognized by in BS 5839-1 since 2002.

Title: VSD systems
Post by: Benzerari on November 03, 2008, 09:28:49 AM

Quote from: colin todd

The problem I believe was the difficulty of pattern recognition in the circumstances in question. But the technique has been established for some years and has been recognized by in BS 5839-1 since 2002.

Colin;

You said it's in BS5839 part 1! in what page?  I have checked the print out of 2002, but didn't find any?

Thank you

Title: VSD systems
Post by: Allen Higginson on November 03, 2008, 10:08:59 AM

Quote from: Benzerari

Quote from: colin todd

The problem I believe was the difficulty of pattern recognition in the circumstances in question. But the technique has been established for some years and has been recognized by in BS 5839-1 since 2002.

Colin;

You said it's in BS5839 part 1! in what page?  I have checked the print out of 2002, but didn't find any?

Thank you

Should have gone to Spec Savers!!
Section 2 - 21.1.3    and 21.1.8 (j).

Title: VSD systems
Post by: Benzerari on November 03, 2008, 10:31:15 AM

Quote from: Buzzard905

Quote from: Benzerari

Quote from: colin todd

The problem I believe was the difficulty of pattern recognition in the circumstances in question. But the technique has been established for some years and has been recognized by in BS 5839-1 since 2002.

Colin;

You said it's in BS5839 part 1! in what page?  I have checked the print out of 2002, but didn't find any?

Thank you

Should have gone to Spec Savers!!
Section 2 - 21.1.3    and 21.1.8 (j).

Thanks Buzz, Found it, it's rather an introduction mentioning VSD detection, with a simple paragraph…, I thought a full standard has been set up since!...

Title: VSD systems
Post by: Benzerari on November 03, 2008, 10:35:53 AM

Can any one provide us what NFPA standard has stated about VSD?

Thank you