DCL-09-068, Support for NRC Review of Invensys Triconex Topical Report 7286-545-1-P Revision 1

Support for NRC Review of Invensys Triconex Topical Report 7286-545-1-P Revision 1

ML092890627
Person / Time
Site:	Diablo Canyon, PROJ0709
Issue date:	10/09/2009
From:	Becker J Pacific Gas & Electric Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
7286-545-1-P, Rev 1, DCL-09-068
Download: ML092890627 (2)

Text

PacificGas and Electric Company James R.Becker Diablo Canyon Power Plant Site Vice President Mail Code 104/5/601 P.Q.Box 56 Avila Beach, CA 93424 805.545.3462 Internal: 691.3462 October 9, 2009 Fax: 805.545.6445 PG&E Letter DCL-09 -068 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Diablo Canyon Units 1 and 2 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Support for NRC Review of Invensys Triconex Topical Report 7286-545-1-P, Revision 1

Reference:

1. Letter No. NRC-V10-09-001, J. Polcyn (Invensys) to NRC, "Nuclear Safety-Related Qualification of the Tricon TMR Programmable Logic Controller (PLC) - Update to Qualification Summary Report Submittal and 'Application for Withholding Proprietary Information from Public Disclosure,"' dated September 9, 2009

Dear Commissioners and Staff:

Pacific Gas & Electric Company (PG&E) is currently planning the replacement of the Diablo Canyon Power Plant (DCPP) Eagle 21TM reactor trip system (RTS) and engineered safety features actuation system (ESFAS) in 2013 for Unit 1 and 2014 for Unit 2. PG&E currently plans to use the Invensys Tricon PLC Version 10 described in Triconex Topical Report 7286-545-1-P, Revision 1, as part of the architecture to be used to replace the Eagle 21TM RTS and ESFAS. Invensys submitted the Triconex Topical Report 7286-545-1 -P, Revision 1, to the NRC for approval in Reference 1. PG&E intends to submit a License Amendment Request for the new architecture in 2010, and intends to rely on the NRC approved version of the Triconex Topical Report 7286-545-1 -P, Revision 1. Therefore, PG&E requests the NRC consider the potential PG&E use of the Invensys Triconex Topical Report 7286-545-1-P, Revision 1, in the determination of priority for NRC review of the topical.

This communication contains no new or revised commitments. If you have any questions or require additional information, please contact Larry Parker at (805) 545-3386.

A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

• Comanche Peak

• Diablo Canyon

• Palo Verde

• San Onofre

• South Texas Project - Wolf Creek

Document Control Desk PG&E Letter DCL-09-068 October 9, 2009 Page 2 Sincerely James R. Bec er Site Vice President kjse/4328/N50271918 cc: Elmo E. Collins, NRC Region IV Michael S. Peck, NRC, Senior Resident Inspector Alan B. Wang, Project Manager, Office of Nuclear Reactor Regulation Gordon Clefton, Senior Project Manager, Nuclear Energy Institute Bill Kemper, NRC, Chief, Instrumentation and Controls Engineering Branch Diablo Distribution A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Catiaway - Comanche Peak - Diablo Canyon - Palo Verde

• San Onofre

• South Texas Project - Wotf Creek