At Wolf Creek the correction factor we use is "open window minus closed window times 4" and our conversion factor is 1mRem/hr = 25,000dpm.
From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Saturday, November 06, 2010 6:33 AM To: [email protected] Subject: Powernet: Ion chamber reading to dpm conversion With respect to determining contamination levels using an ion chamber instrument, there appears to be two schools of thought: 1. The ion chamber open window reading in mR/h is converted to dpm according to the following relation ship: 1 mR/h = 50 kdpm 2. The difference of open window minus closed window is multiplied by the BCF and the result is converted to dpm according to the relationship: 1 mR/h = 50 kdpm What method do you use and do you have (or know of) a reference for your method? Thanks in advance, Jeffrey J. Cady, CHP, RPT Mgr RP Technical Support Exelon Nuclear Dresden Station Phone: (815) 416-2719 [email protected] ************************************************** This e-mail and any of its attachments may contain Exelon Corporation proprietary information, which is privileged, confidential, or subject to copyright belonging to the Exelon Corporation family of Companies. This e-mail is intended solely for the use of the individual or entity to which it is addressed. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution, copying, or action taken in relation to the contents of and attachments to this e-mail is strictly prohibited and may be unlawful. If you have received this e-mail in error, please notify the sender immediately and permanently delete the original and any copy of this e-mail and any printout. Thank You. **************************************************
