Columbia does not use pre-alarm function. Workers are to monitor their accumulated dose at least every 15 minutes and exit the area at 80% of the dose alarm set point.
Ray Thomson Health Physics Craft Supervisor Columbia Generating Station rwthom...@energy-northwest.com Office, 509-377-8273 Pager, 509-780-0339 From: Creamer, Charles E [mailto:cecrea...@tva.gov] Sent: Wednesday, April 27, 2016 11:44 AM To: 'powernet@hpspowernet.org' Subject: [powernet] Dosimeter Pre-Alarms Has anyone used the pre-alarm function of the electronic dosimeter lately. I remember hearing something about them in the past in which dosimeter prelarms counted the same as an alarm but could not remember the specifics. At Browns Ferry we do not use them and brief people to exit the area before they get to 80% of the dose alarm set point Chuck Creamer Charles E. Creamer Health Physicist Tennessee Valley Authority Browns Ferry Nuclear Plant P.O. Box 2000 (Mail Stop NAB-1G-BFN) Decatur, Al. 35609-2000 Phone: 256-729-2983 Fax: 256-729-3101 Pager: 1-800-323-4853, pin 30-053 mailto:cecrea...@tva.gov This electronic message transmission contains information which may be TVA SENSITIVE, TVA RESTRICTED or TVA CONFIDENTIAL. Any misuse or unauthorized disclosure can result in both civil and criminal penalties. If you are not the intended recipient, be aware that any disclosure, copying, distribution or use of the content of this information is prohibited. If you have received this communication in error, please notify me immediately by email and delete the original message.