ML17276A078

NRR E-mail Capture - Request for Additional Information Regarding TSTF-547 Supported Amendment

ML17276A078
Person / Time
Site:	Braidwood
Issue date:	09/27/2017
From:	Joel Wiebe Plant Licensing Branch III
To:	Bauer J Exelon Corp
References
Download: ML17276A078 (2)

Text

NRR-PMDAPEm Resource From: Wiebe, Joel Sent: Wednesday, September 27, 2017 12:14 PM To: Joseph Bauer

Subject:

Request for Additional Information Regarding TSTF-547 Supported Amendment

Joe, In reviewing the Exelon Generation Company, LLC (the licensee) letter dated June 30, 2017 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML17187A191), related to a license amendment request to change the Braidwood Station, Units 1 and 2 and Byron Station, Units 1 and 2, technical specifications to incorporate changes supported by TSTF-547,Clarification of Rod Position Requirements, the NRC staff has determined that additional information is required to complete the review.

A response to the below request for additional information is requested within 30 days. If a clarification call is needed, let me know within 7 days.

The proposed change to the TSs would add a new Condition A to Limiting Condition for Operation (LCO) 3.1.5 and LCO 3.1.6 (shutdown and control bank insertion limits) that is applicable when one bank is inserted 16 steps below the insertion limits specified in the Core Operating Limits Report. You state in your submittal dated June 30, 2017, that, while the TSTF-547 verbiage is not adopted in its entirety, the requested changes are consistent with the changes approved by the NRC staff in its safety evaluation (SE) dated March 4, 2016, Final Safety Evaluation of Technical Specification Task Force Traveler TSTF-547, Clarification of Rod Position Requirements, Revision 1 (ADAMS Accession No. ML15328A350). The NRC staff states in its SE that the bracketed number [16] in Condition A should be replaced with the plant-specific minimum number of steps that the rods must be moved to ensure correct performance of Surveillance Requirement (SR) 3.1.4.2. The Braidwood and Byron SR 3.1.4.2 requires movement of the control and shutdown rods a minimum of 10 steps in either direction. Provide justification for the use of 16 steps in Condition A in LCOs 3.1.5 and 3.1.6 and explain how this is consistent with that approved in the NRC staffs SE for TSTF-547.

Joel 1

Hearing Identifier: NRR_PMDA Email Number: 3748 Mail Envelope Properties (Joel.Wiebe@nrc.gov20170927121300)

Subject:

Request for Additional Information Regarding TSTF-547 Supported Amendment Sent Date: 9/27/2017 12:13:43 PM Received Date: 9/27/2017 12:13:00 PM From: Wiebe, Joel Created By: Joel.Wiebe@nrc.gov Recipients:

"Joseph Bauer" <Joseph.Bauer@exeloncorp.com>

Tracking Status: None Post Office:

Files Size Date & Time MESSAGE 1942 9/27/2017 12:13:00 PM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received: