Fort Calhoun uses the InLight OSLN. We have not had much of a problem with breaking pins - just a few that I recall. However, there have been quite a few cracked cases around the pin area. We first noticed it with a number (about 30%) of the Security dosimeters, but the cracking was not limited to them. As far as I know, we have not had one actually fall apart due to this issue.
David Brehm Fort Calhoun Nuclear Station Office: 402.533.7582 Cellular: 402.214.0107 Pager: 402.561.3310 From: [email protected] [mailto:[email protected]] On Behalf Of Egert, Glenn W. Sent: Wednesday, February 15, 2012 2:11 PM To: [email protected] Subject: Powernet: OSL dosimeters Columbia is inquiring: For plants that are using OSL dosimeters, specifically InLight Dosimeters, have you experienced a failure of the fastener (plastic thumbtack-like piece) by either breaking in two or falling out of place? We have had several occurrences of fastener breakage since we began using InLight Dosimeters in September 2011. The vendor has redesigned the fasteners and has used them with the January 2012 batch of dosimeters. However we have had four instances of fastener failure with this new batch of dosimeters. Just trying to determine if it is a continuing design flaw or an assembly problem. Your InLight insight is appreciated. Glenn W. Egert Radiological Support, Dosimetry Columbia Generating Station Energy Northwest (509) 377-4418 [email protected]<mailto:[email protected]> ---------------------------------------------------------------------- This e-mail contains Omaha Public Power District's confidential and proprietary information and is for use only by the intended recipient. Unless explicitly stated otherwise, this e-mail is not a contract offer, amendment, or acceptance. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.
