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Author Topic: VSD systems  (Read 4506 times)

Offline Benzerari

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VSD systems
« on: November 02, 2008, 04:44:43 PM »
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Offline colin todd

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VSD systems
« Reply #1 on: November 02, 2008, 07:18:31 PM »
Why doesnt it work in the UK???? Surely it already does.
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Colin Todd, C S Todd & Associates

Offline kurnal

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VSD systems
« Reply #2 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/
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Offline Benzerari

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VSD systems
« Reply #3 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! :)
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Offline colin todd

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VSD systems
« Reply #4 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.
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Colin Todd, C S Todd & Associates

Offline Benzerari

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VSD systems
« Reply #5 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
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Offline Allen Higginson

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VSD systems
« Reply #6 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).
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Offline Benzerari

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VSD systems
« Reply #7 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!...
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Offline Benzerari

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VSD systems
« Reply #8 on: November 03, 2008, 10:35:53 AM »
Can any one provide us what NFPA standard has stated about VSD?

Thank you
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