<p dir="ltr">Savitha,</p>
<p dir="ltr">smoke detectors installed in plenum and cleanroom area are no help to detect smoke when fire is happened because of the laminar flow pattern. Our lab., all smoke detectors are below raised floor and inside air AHU. </p>
<p dir="ltr">Jeff</p>
<p dir="ltr">發自我的小米手機</p>
<div class="quote">於 2015/3/30 下午9:21,"savitha.p" <savitha.p@ece.iisc.ernet.in> 寫道:<br type='attribution'><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr">Hi!
<br>
<br>
We had a fire recently inside the cleanroom and our smoke detectors did
<br>
not give any warning even though the fire was burning for ~5min before
<br>
it was put out. We currently have smoke detectors, a VESDA system
<br>
installed inside the room with 3 detectors, one at the plenum level, one
<br>
in the room and one under the raised floor (room is square shaped with
<br>
~700 sq.ft area, Class 1000).
<br>
<br>
We were wondering how the other fabs handle these kind of situations.
<br>
What is the ideal distance between smoke detectors and how do you ensure
<br>
that the smoke is driven over the detectors no matter what the location
<br>
of the fire is.
<br>
<br>
Please let us know your thoughts on this matter.
<br>
<br>
Thanks and regards,
<br>
<br>
Savitha
<br>
<br>
____________________________________________
<br>
<br>
<br>
<a href="http://Dr.Sa">Dr.Sa</a>vitha P,
<br>
Technology Manager
<br>
National Nanofabrication Centre,
<br>
Centre for Nanoscience and Engineering
<br>
Indian Institute of Science
<br>
Bangalore - 560012
<br>
India.
<br>
Ph: +91 80 2293 3254
<br>
<a href="http://www.cense.iisc.ernet.in">www.cense.iisc.ernet.in</a>
<br>
<br>
<br>
<br>
<br>
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