Phil McArdle PMcArdle <@t> ebsciences.com
Thu Dec 20 14:57:17 CST 2007


This response is from a microwave vendor, so you've been forewarned! :-)

That said, it seems analogous ISO-9000 certification: each lab is 
allowed to make its own determination as to the meaning of 
"periodically;" the procedure should be documented and assigned AND (and 
here's the key part) adhered to and logged! I've seen some labs with 
very nicely thought out and documented procedures, who got written up 
because they didn't follow their own procedures.

When CAP began their microwave leakage measurement requirement, it 
specified "at least" yearly, and EBS recommended quarterly. (Arbitrary? 
Maybe.) As for reproducibility, I feel that yearly is not enough, daily 
or weekly is probably excessive, but depending upon your lab's volume, 
monthly or quarterly should be sufficient, unless anything unusual is 
noted (blown fuse, etc.).

Hope this helps!

Phil McArdle
Phil McArdle
Microwave Product Manager

Energy Beam Sciences, Inc.
29-B Kripes Rd.
East Granby, CT 06026

Tel:  800.992.9037 x 341
Mobile: 860.597.6796
Fax: 860.653.0422

pmcardle <@t> ebsciences.com

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Janice Mitchell wrote:
 > Cap requests "microwave devices be periodically monitored for
 > reproducibility" what is considered periodically?
 >                       Thanks, Janice
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