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Entry  Mon Nov 26 10:58:20 2012, Steve, Update, PEM, air cond maitenance tomorrow 
    Reply  Tue Nov 27 11:27:22 2012, Steve, Update, PEM, particle count is going up 5yparticles.pngparticle_6m_6m.png1y_particlec.png10y_particle_c.png
    Reply  Mon Mar 4 11:30:47 2013, Steve, Update, PEM, air cond problem 40dAC.png
    Reply  Wed Mar 20 08:59:24 2013, Steve, Update, PEM, air cond maitenance is today 100dPEM.png
Message ID: 8314     Entry time: Wed Mar 20 08:59:24 2013     In reply to: 7744
Author: Steve 
Type: Update 
Category: PEM 
Subject: air cond maitenance is today 

 Outside air quality at 8:30am  1.1 million of 0.5 micron particles cf / min with MET counter #2

AC unit output measured  directly at the outlet of east end  6,000  and south end 3,000 of 0.5 micron particles cf / min with counter #2

Lab measurement at the top of IOOC 20K of 0.5 micron particles cf / min with MET #1

HEPA filters: 2 mobile units  at the middle of the east arm at speed 100%, PSL enclosure 20% and south end flow bench are running.

The PSL, south flow bench and mobile unit (Envirco  sn69406003 ) measured zero counts of 0.5 & 0.3 micron particles

Envirco HEPA filter unit sn 69406001 measured 50 particles of 0.5micron and 320 of 0.3 micron particles cf / min with counter #2

This filter will be replaced.

                   

NOTE: inside air quality peaks we can not control. It depends on the weather and our house keeping.

When your work is particle sensitive keep your eyes on the particle counter.

 

 

 

 

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