Roger, Palo Verde makes a number of 'routine' Containment Building power entries during each operational cycle. We enter every 6 months to perform lubrication of the CEDM cooling fan motors (typically about 100 to 150 person-mrem). We have requested that our Engineering folks look into using sealed bearing and as of yet we have not done this modification. Prior to each outage (2 a year) we enter the Containment Building at power to perform elevator checks to ensure that it will be working, re-lamp general lighting, perform radiation and contamination surveys to support postings after shutdown, install batteries in e-lights, allow I&C to check RCP speed probes, and to allow Engineering to walk down S/G blowdown lines.
As needed, we also make entries for troubleshooting, emergent inspections, etc. Seth. From: [email protected] [mailto:[email protected]] On Behalf Of Roger P. Shaw Sent: Thursday, May 12, 2011 11:29 AM To: [email protected] Subject: Powernet: Reason for Containment Entries at Power For those (PWRs) who make containment entries at power, for what reason are you doing so (e.g., RCP oil topoff, troubleshoot key monitors, emergent inspection, etc.)? Thanks very much in advance, Roger Roger P. Shaw, CHP Principal Shaw Partners LLC 94A W. River Rd Rumson, NJ 07760 732.539.6786 [email protected]<mailto:[email protected]> www.shawpartners.com<http://www.shawpartners.com> --- NOTICE --- This message is for the designated recipient only and may contain confidential, privileged or proprietary information. If you have received it in error, please notify the sender immediately and delete the original and any copy or printout. Unintended recipients are prohibited from making any other use of this e-mail. Although we have taken reasonable precautions to ensure no viruses are present in this e-mail, we accept no liability for any loss or damage arising from the use of this e-mail or attachments, or for any delay or errors or omissions in the contents which result from e-mail transmission.
