The activity for each extinguisher is about 1.8 microcuries. Probably no reasonable way for licensed material to enter the pressure vessel.
Stephen Stoutenburg, CHP Radiation Protection Staff Comanche Peak (254)897-0281 From: Diehl, John [mailto:jadi...@stpegs.com] Sent: Thursday, January 23, 2020 4:37 PM To: 'powernet@hpspowernet.org' <powernet@hpspowernet.org> Cc: Stoutenburg, Stephen <stephen.stoutenb...@vistraenergy.com> Subject: RE: Question on release of fire extinguishers from RCA EXTERNAL EMAIL What is the activity of the 40K? I would think you could release them by direct frisk. Is there any reasonable way that a fire extinguisher can become internally contaminated with licensed material? Typical fire extinguishers are under slight positive pressure even when discharged; I think that it is unreasonable to do anything more than direct and indirect surveys of the external surfaces. You may have to revise the material release procedure to specifically exempt fire extinguishers to answer any concerns, which might have been expressed. [NPP]John Diehl, CHP STPNOC Health Physics P.O. Box 289 Wadsworth, TX 77483 (361) 972-8545 jadi...@stpegs.com<mailto:jadi...@stpegs.com> From: Powernet <powernet-boun...@hpspowernet.org<mailto:powernet-boun...@hpspowernet.org>> On Behalf Of Stoutenburg, Stephen via Powernet Sent: Thursday, January 23, 2020 4:13 PM To: powernet@hpspowernet.org<mailto:powernet@hpspowernet.org> Cc: Stoutenburg, Stephen <stephen.stoutenb...@vistraenergy.com<mailto:stephen.stoutenb...@vistraenergy.com>> Subject: [Powernet] Question on release of fire extinguishers from RCA **THIS EMAIL IS FROM AN EXTERNAL SENDER OUTSIDE OF THE STPNOC NETWORK. BE CAUTIOUS ABOUT CLICKING LINKS OR OPENING ATTACHMENTS FROM UNKNOWN SOURCES. DO NOT PROVIDE PERSONAL INFORMATION SUCH AS SS#, USER ID/PASSWORD, ETC.** Comanche Peak is currently considering how to release fire extinguishers that contain Potassium Bicarbonate from the RCA. The extinguisher does not fit in our usual HPGe setup, so we have run some preliminary scans of an extinguisher on a WBC using NaI detection. Obviously the Potassium-40 peaked as the known contaminant and various unknown peaks populated as well (possible scatter). Does anyone have experience to share or suggestions on releasing extinguishers or other objects that do not fit in a HPGe? Stephen Stoutenburg, CHP Radiation Protection Staff Comanche Peak Nuclear Power Plant 6322 North FM 56 or PO Box 1002 Mail Code O05A Glen Rose, TX 76043 (254)897-0281 [Vistra-TXUE-Lum-lockup-all-03] Confidentiality Notice: This email message, including any attachments, contains or may contain confidential information intended only for the addressee. If you are not an intended recipient of this message, be advised that any reading, dissemination, forwarding, printing, copying or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by reply message and delete this email message and any attachments from your system. Confidentiality Notice: This email message, including any attachments, contains or may contain confidential information intended only for the addressee. If you are not an intended recipient of this message, be advised that any reading, dissemination, forwarding, printing, copying or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by reply message and delete this email message and any attachments from your system.
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