We treat ours as benchtop counters under ANSI N323A for portable equipment and use +/-20% of a check source. Chemistry follows other quality guidance that gets into Chi/Q tests, etc. If I work in Chemistry I perform checks one way for a SAC-4 and if I work in RP I do them another way, just depends on what quality stds you're tied to.
Effluent measurements are handled by Chemistry and not sure what MDCs they need to meet. We use an alpha counter for occupational air samples and use the same +/-20%. I'd watch out for effluent counters. I'd bet you'd find yourself tied to various reg guides and ultimately chemistry quality standards. Glen Vickers Exelon Corp RP Technical Lead, CHP 815-216-2723 (work/cell) From: [email protected] [mailto:[email protected]] On Behalf Of Byrum, William F Sent: Wednesday, August 13, 2014 1:04 PM To: [email protected] Subject: Powernet: Smear counter quality control checks Duke Energy request the following information: 1. For alpha / beta counters used to count smears for contamination determination, what daily (or other frequency) quality control checks are used? ( i.e. Control chart with a 3 sigma limit or a single count with a + 20% limit, etc.) 2. Do you employee different methods for counters used to analyze effluents or other samples not related to smear counting for contamination control. Bill Byrum, CHP,RSO EnRad Laboratories Duke Energy [email protected]<mailto:[email protected]> Phone: 980.875.5811 Cell Ph.: 704.996.6906 This e-mail and any attachments are confidential, may contain legal, professional or other privileged information, and are intended solely for the addressee. If you are not the intended recipient, do not use the information in this e-mail in any way, delete this e-mail and notify the sender. -EXCIP
