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User name Jack
Log entry time 13:40:58 on April 14, 2007
Entry number 199017
keyword=VESDA alerts
The VESDAs were displaying elevated levels. The AHU and beam entrance
tunnel heads had their ALERT LEDs lit. We reset the VESDAs and made an
access to the hall. There did seem to be a very slight haze. Ed claimed
the vacuum pumps were running ok. We did not see anything obviously wrong.
The only other thought Ed had was it might be somehow connected to the
increase in the outside humidity or rain. He felt it was a bit humid in
the hall. Ed would know, he is a pretty sensitive kind of guy. If the
VESDAs go up again, follow the instructions posted above them.