From: [email protected] [mailto:[email protected]] On Behalf Of 
Benjy P Bertossi
Sent: Monday, March 02, 2015 12:11 PM
To: [email protected]
Cc: Bruce D Rumans
Subject: Powernet: HEPA DOP testing


What general requirement does your site have for testing portable HEPA units 
used for radiological controls? All portable HEPA inside the RCA require annual 
integrity testing. We use the ATI aerosol photometer and aerosol generator with 
PAO (poly alpha olefin).

What is frequency for DOP testing portable HEPA units / vacuums? Annual, after 
HEPA filter replacement, prior to use for new units, and if system integrity is 
suspect.

Is there a difference for DOP testing requirements for portable HEPA used for 
asbestos work? No, the testing requirement is the same for all portable HEPA 
units/vacuums used in the RCA.


Thanks, Benjy

Benjy Bertossi
Fermi2 - RP Supervisor
734-586-4935
[email protected]<mailto:[email protected]>


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