Limerick asked this question before and got no response. We are putting it out again for review. Rad Engineering is trying evaluate "out of the box" methods for increasing stay times due to heat during reactor re-assembly and cavity decon. Any information is appreciated.
Limerick is a Boiling Water Reactor (BWR). Stays times for initial cavity decontamination activities during refueling outages are limited to 30 to 45 minutes due to temperatures. 1) Prior to reactor cavity drain down - What methods (other than shut down cooling) are used to control water temperature prior to drain down to reduce temperatures in the cavity post drain down? (Note: A large in-vessel inspection or repair scope may limit the use of shut down cooling.) 2) Post reactor cavity drain down - What method is used (if any) to control or reduce reactor cavity temperatures after drain down to increase stay times? (e.g., in-cavity air-conditioning, evaporative cooling fans). 3) If you don't do anything to reduce temperatures for worker stay times, please state that and why. You can respond via Powernet or contact our Rad. Engineer directly. [email protected] or 610-718-2248. Thanks Linda Parlatore ----------------------------------------- ************************************************** 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. **************************************************
