ONS-2014-031, Technical Specification (TS) Bases Change

Technical Specification (TS) Bases Change

ML14066A077
Person / Time
Site:	Oconee
Issue date:	03/04/2014
From:	Batson S Duke Energy Carolinas
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
ONS-2014-031
Download: ML14066A077 (24)

Text

= DUKE ENERGY°Vice ScoU 1. Baon President ENE RG~aOconee NuclearStefion Duke Energy ONOIVP 17800 Rochester Hwy Seneca, SC 29672 o: 864,873.3274 ONS-2014-031 f 864.873.4208 Scott.Batson@duke-energy.com March 4, 2014 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission 11555 Rockville Pike Rockville, Maryland 20852

Subject:

Duke Energy Carolinas, LLC Oconee Nuclear Station Docket Numbers 50-269, 50-270, and 50-287 Technical Specification (TS) Bases Change Please find attached a change to the Oconee Nuclear Station (ONS) TS Bases. This change was processed in accordance with the provisions of Technical Specification 5.5.15, "Technical Specifications (TS) Bases Control Program." TSB Change 2014-01 revised TS Basis 2.1.2, Reactor Coolant System (RCS) Pressure Safety Limits, by adding additional information to provide discriminators for normal operation, anticipated transients (upset), emergency operation, and faulted operation.

Any questions regarding this information should be directed to Sandra N. Severance at (864) 873-3466.

Sincerely, Scott L. Batson Vice President Oconee Nuclear Station Attachment www.duke-energy.com

,U. S. Nuclear Regulatory Commission March 4, 2014 Page 2 cc: Mr. Victor McCree, Regional Administrator U.S. Nuclear Regulatory Commission, Region II Marquis One Tower 245 Peachtree Center Ave., NE, Suite 1200 Atlanta, GA 30303-1257 Mr. Richard Guzman, Senior Project Manager (ONS)

(By electronic mail only)

U. S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation 11555 Rockville Pike Mail Stop O-8C2 Rockville, MD 20852 Mr. Eddy Crowe Senior Resident Inspector Oconee Nuclear Station

luclearStation DUKE ENERGY, Ooe Duke Energy 7800 Rochester Hwy Seneca, SC 29672 February 17, 2014 Re: Oconee Nuclear Station Technical Specification Bases Change Please replace the corresponding pages in your copy of the Oconee Technical Specifications Bases Manual as follows:

REMOVE THESE PAGES INSERT THESE PAGES List of Effective Pages (LOEP) 1- 17 List of Effective Pages (LOEP) 1- 17 TS Bases Page B 2.1.2-1 thru 3 TS Bases Page B 2.1.2-1 thru 3 If you have any questions concerning the contents of this Technical Specification Bases update, contact Sandra Severance at (864) 873-3466.

Y Wasik

,Regulatory Affairs Manager www.duke-energy.com

Attachment Oconee Nuclear Station Revised Technical Specification Bases Pages

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE LOEPI BASES REVISION 02/06/14 LOEP2 BASES REVISION 07/23/12 LOEP3 BASES REVISION 07/23/12 LOEP4 BASES REVISION 05/16/12 LOEP5 BASES REVISION 05/16/12 LOEP6 BASES REVISION 05/16/12 LOEP7 BASES REVISION 05/16/12 LOEP8 BASES REVISION 10/12/12 LOEP9 BASES REVISION 10/12/12 LOEPlO BASES REVISION 05/16/12 LOEP 1I BASES REVISION 11/13/12 LOEP 12 BASES REVISION 08/08/12 LOEP13 BASES REVISION 01/16/14 LOEP14 BASES REVISION 01/16/14 LOEP 15 BASES REVISION 05/16/12 LOEP16 BASES REVISION 07/25/13 LOEP17 BASES REVISION 07/25/13 i BASES REVISION 06/03/11 ii 363/365/364 10/29/08 iii 355/357/356 4/2/07 iv 351/353/352 6/15/06 B 2.1.1-1 BASES REVISION 05/31/12 B 2.1.1-2 BASES REVISION 05/31/12 B 2.1.1-3 BASES REVISION 05/31/12 B 2.1.1-4 BASES REVISION 05/31/12 B 2.1.2-1 BASES REVISION 02/06/14 B 2.1.2-2 BASES REVISION 02/06/14 B 2.1.2-3 BASES REVISION 02/06/14 B 3.0-1 356/358/357 4/2/07 B 3.0-2 BASES REVISION 10/23/03 B 3.0-3 BASES REVISION 10/23/03 B 3.0-4 BASES REVISION 10/23/03 B 3.0-5 BASES REVISION 10/23/03 B 3.0-6 BASES REVISION 10/23/03 B 3.0-7 BASES REVISION 10/23/03 B 3.0-8 BASES REVISION 10/23/03 LOEPI

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.0-9 BASES REVISION 10/23/03 B 3.0-10 BASES REVISION 10/23/03 B 3.0-11 BASES REVISION 10/23/03 B 3.0-12 BASES REVISION 10/23/03 B 3.0-13 BASES REVISION 10/20/11 B 3.0-14 BASES REVISION 10/23/03 B 3.0-15 BASES REVISION 10/23/03 B 3.1.1-1 BASES REVISION 05/16/12 B 3.1.1-2 BASES REVISION 05/16/12 B 3.1.1-3 BASES REVISION 05/16/12 B3.1.1-4 BASES REVISION 05/16/12 B 3.1.2-1 BASES REVISION 05/16/12 B 3.1.2-2 BASES REVISION 05/16/12 B 3.1.2-3 BASES REVISION 05/16/12 B 3.1.2-4 BASES REVISION 05/16/12 B 3.1.2-5 BASES REVISION 05/16/12 B 3.1.3-1 BASES REVISION 06/02/99 B 3.1.3-2 BASES REVISION 03/27/99 B 3.1.3-3 300/300/300 12/16/98 B 3.1.3-4 300/300/300 12/16/98 B 3.1.4-1 BASES REVISION 07/23/12 B 3.1.4-2 BASES REVISION 07/23/12 B 3.1.4-3 BASES REVISION 07/23/12 B 3.1.4-4 BASES REVISION 07/23/12 B 3.1.4-5 BASES REVISION 07/23/12 B 3.1.4-6 BASES REVISION 07/23/12 B 3.1.4-7 BASES REVISION 07/23/12 B 3.1.4-8 BASES REVISION 07/23/12 B 3.1.4-9 BASES REVISION 07/23/12 B 3.1.5-1 BASES REVISION 05/16/12 B 3.1.5-2 BASES REVISION 05/16/12 B 3.1.5-3 BASES REVISION 05/16/12 B 3.1.5-4 BASES REVISION 05/16/12 B 3.1.6-1 BASES REVISION 07/23/12 B 3.1.6-2 BASES REVISION 07/23/12 B 3.1.6-3 BASES REVISION 07/23/12 B 3.1.6-4 DELETE BASES REV. 07/23/12 LOEP2

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.1.7-1 BASES REVISION 07/23/12 B 3.1.7-2 BASES REVISION 07/23/12 B 3.1.7-3 BASES REVISION 07/23/12 B 3.1.7-4 BASES REVISION 07/23/12 B 3.1.8-1 BASES REVISION 05/16/12 B 3.1.8-2 BASES REVISION 05/16/12 B 3.1.8-3 BASES REVISION 05/16/12 B 3.1.8-4 BASES REVISION 05/16/12 B 3.1.8-5 BASES REVISION 05/16/12 B 3.2.1-1 BASES REVISION 05/16/12 B 3.2.1-2 BASES REVISION 05/16/12 B 3.2.1-3 BASES REVISION 05/16/12 B 3.2.1-4 BASES REVISION 05/16/12 B 3.2.1-5 BASES REVISION 05/16/12 B 3.2.1-6 BASES REVISION 05/16/12 B 3.2.1-7 BASES REVISION 05/16/12 B 3.2.2-1 BASES REVISION 05/16/12 B 3.2.2-2 BASES REVISION 05/16/12 B 3.2.2-3 BASES REVISION 05/16/12 B 3.2.2-4 BASES REVISION 05/16/12 B 3.2.2-5 BASES REVISION 05/16/12 B 3.2.2-6 BASES REVISION 05/16/12 B 3.2.2-7 BASES REVISION 05/16/12 B 3.2.3-1 BASES REVISION 05/16/12 B 3.2.3-2 BASES REVISION 05/16/12 B 3.2.3-3 BASES REVISION 05/16/12 B 3.2.3-4 BASES REVISION 05/16/12 B 3.2.3-5 BASES REVISION 05/16/12 B 3.2.3-6 BASES REVISION 05/16/12 B 3.2.3-7 BASES REVISION 05/16/12 B 3.2.3-8 BASES REVISION 05/16/12 B 3.2.3-9 BASES REVISION 05/16/12 B 3.3.1-1 BASES REVISION 05/16/12 B 3.3.1-2 BASES REVISION 05/16/12 B 3.3.1-3 BASES REVISION 05/16/12 B 3.3.1-4 BASES REVISION 05/16/12 B 3.3.1-5 BASES REVISION 05/16/12 B 3.3.1-6 BASES REVISION 05/16/12 LOEP3

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.3.1-7 BASES REVISION 05/16/12 B 3.3.1-8 BASES REVISION 05/16/12 B 3.3.1-9 BASES REVISION 05/16/12 B 3.3.1-10 BASES REVISION 05/16/12 B 3.3.1-11 BASES REVISION 05/16/12 B 3.3.1-12 BASES REVISION 05/16/12 B 3.3.1-13 BASES REVISION 05/16/12 B 3.3.1-14 BASES REVISION 05/16/12 B 3.3.1-15 BASES REVISION 05/16/12 B 3.3.1-16 BASES REVISION 05/16/12 B 3.3.1-17 BASES REVISION 05/16/12 B 3.3.1-18 BASES REVISION 05/16/12 B 3.3.1-19 BASES REVISION 05/16/12 B 3.3.1-20 BASES REVISION 05/16/12 B 3.3.1-21 BASES REVISION 05/16/12 B 3.3.1-22 BASES REVISION 05/16/12 B 3.3.1-23 BASES REVISION 05/16/12 B 3.3.1-24 BASES REVISION 05/16/12 B 3.3.1-25 BASES REVISION 05/16/12 B.3.3.1-26 BASES REVISION 05/16/12 B.3.3.1-27 BASES REVISION 05/16/12 B.3.3.1-28 BASES REVISION 05/16/12 B.3.3.1-29 BASES REVISION 05/16/12 B.3.3.1-30 BASES REVISION 05/16/12 B 3.3.2-1 BASES REVISION 12/14/04 B 3.3.2-2 BASES REVISION 12/14/04 B 3.3.2-3 BASES REVISION 12/14/04 B 3.3.3-1 BASES REVISION 05/16/12 B 3.3.3-2 BASES REVISION 05/16/12 B 3.3.3-3 BASES REVISION 05/16/12 B 3.3.3-4 BASES REVISION 05/16/12 B.3.3.3-5 BASES REVISION 05/16/12 B.3.3.3-6 BASES REVISION 05/16/12 B 3.3.4-1 BASES REVISION 05/16/12 B 3.3.4-2 BASES REVISION 05/16/12 B 3.3.4-3 BASES REVISION 05/16/12 B 3.3.4-4 BASES REVISION 05/16/12 B 3.3.5-1 BASES REVISION 05/16/12 B 3.3.5-2 BASES REVISION 05/16/12 B 3.3.5-3 BASES REVISION 05/16/12 B 3.3.5-4 BASES REVISION 05/16/12 LOEP4

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.3.5-5 BASES REVISION 05/16/12 B 3.3.5-6 BASES REVISION 05/16/12 B 3.3.5-7 BASES REVISION 05/16/12 B 3.3.5-8 BASES REVISION 05/16/12 B 3.3.5-9 BASES REVISION 05/16/12 B 3.3.5-10 BASES REVISION 05/16/12 B 3.3.5-11 BASES REVISION 05/16/12 B 3.3.5-12 BASES REVISION 05/16/12 B 3.3.5-13 BASES REVISION 05/16/12 B 3.3.5-14 BASES REVISION 05/16/12 B 3.3.5-15 BASES REVISION 05/16/12 B 3.3.5-16 BASES REVISION 05/16/12 B 3.3.5-17 BASES REVISION 05/16/12 B 3.3.6-1 BASES REVISION 05/16/12 B 3.3.6-2 BASES REVISION 05/16/12 B 3.3.6-3 BASES REVISION 05/16/12 B 3.3.6-4 BASES REVISION 05/16/12 B 3.3.7-1 BASES REVISION 05/16/12 B 3.3.7-2 BASES REVISION 05/16/12 B 3.3.7-3 BASES REVISION 05/16/12 B 3.3.7-4 BASES REVISION 05/16/12 B 3.3.7-5 BASES REVISION 05/16/12 B 3.3.7-6 BASES REVISION 05/16/12 B 3.3.7-7 BASES REVISION 05/16/12 B 3.3.7-8 BASES REVISION 05/16/12 B 3.3.8-1 BASES REVISION 05/16/12 B 3.3.8-2 BASES REVISION 05/16/12 B 3.3.8-3 BASES REVISION 05/16/12 B 3.3.8-4 BASES REVISION 05/16/12 B 3.3.8-5 BASES REVISION 05/16/12 B 3.3.8-6 BASES REVISION 05/16/12 B 3.3.8-7 BASES REVISION 05/16/12 B 3.3.8-8 BASES REVISION 05/16/12 B 3.3.8-9 BASES REVISION 05/16/12 B 3.3.8-10 BASES REVISION 05/16/12 B 3.3.8-11 BASES REVISION 05/16/12 B 3.3.8-12 BASES REVISION 05/16/12 B 3.3.8-13 BASES REVISION 05/16/12 B 3.3.8-14 BASES REVISION 05/16/12 B 3.3.8-15 BASES REVISION 05/16/12 B 3.3.8-16 BASES REVISION 05/16/12 B 3.3.8-17 BASES REVISION 05/16/12 B 3.3.8-18 BASES REVISION 05/16/12 LOEP5

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.3.8-19 BASES REVISION 05/16/12 B 3.3.8-20 Deleted 350/352/351 6/1/06 B 3.3.9-1 BASES REVISION 05/16/12 B 3.3.9-2 BASES REVISION 05/16/12 B 3.3.9-3 BASES REVISION 05/16/12 B 3.3.9-4 BASES REVISION 05/16/12 B 3.3.10-1 BASES REVISION 05/16/12 B 3.3.10-2 BASES REVISION 05/16/12 B 3.3.10-3 BASES REVISION 05/16/12 B 3.3.10-4 BASES REVISION 05/16/12 B 3.3.11-1 BASES REVISION 05/16/.12 B 3.3.11-2 BASES REVISION 05/16/12 B 3.3.11-3 BASES REVISION 05/16/12 B 3.3.11-4 BASES REVISION 05/16/12 B 3.3.11-5 BASES REVISION 05/16/12 B 3.3.11-6 DELETE BASES REV 4/17/02 B 3.3.12-1 BASES REVISION 05/16/12 B 3.3.12-2 BASES REVISION 05/16/12 B 3.3.12-3 DELETE 320/320/320 9/26/01 B 3.3.13-1 BASES REVISION 05/16/12 B 3.3.13-2 BASES REVISION 05/16/12 B 3.3.13-3 BASES REVISION 05/16/12 B 3.3.13-4 BASES REVISION 05/16/12 B 3.3.14-1 BASES REVISION 05/16/12 B 3.3.14-2 BASES REVISION 05/16/12 B 3.3.14-3 BASES REVISION 05/16/12 B 3.3.14-4 BASES REVISION 05/16/12 B 3.3.15-1 BASES REVISION 05/16/12 B 3.3.15-2 BASES REVISION 05/16/12 B 3.3.15-3 BASES REVISION 05/16/12 B 3.3.16-1 BASES REVISION 05/16/12 B 3.3.16-2 BASES REVISION 05/16/12 B 3.3.16-3 BASES REVISION 05/16/12 B 3.3.16-4 BASES REVISION 05/16/12 B 3.3.17-1 BASES REVISION 05/16/12 B 3.3.17-2 BASES REVISION 05/16/12 B 3.3.17-3 BASES REVISION 05/16/12 B 3.3.18-1 BASES REVISION 05/16/12 B 3.3.18-2 BASES REVISION 05/16/12 B 3.3.18-3 BASES REVISION 05/16/12 B 3.3.18-4 BASES REVISION 05/16/12 LOEP6

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.3.19-1 BASES REVISION 05/16/12 B 3.3.19-2 BASES REVISION 05/16/12 B 3.3.19-3 BASES REVISION 05/16/12 B 3.3.19-4 BASES REVISION 05/16/12 B 3.3.20-1 BASES REVISION 05/16/12 B 3.3.20-2 BASES REVISION 05/16/12 B 3.3.20-3 BASES REVISION 05/16/12 B 3.3.20-4 BASES REVISION 05/16/12 B 3.3.21-1 BASES REVISION 05/16/12 B 3.3.21-2 BASES REVISION 05/16/12 B 3.3.21-3 BASES REVISION 05/16/12 B 3.3.22-1 BASES REVISION 05/16/12 B 3.3.22-2 BASES REVISION 05/16/12 B 3.3.23-1 BASES REVISION 05/16/12 B 3.3.23-2 BASES REVISION 05/16/12 B 3.3.23-3 BASES REVISION 05/16/12 B 3.3.23-4 BASES REVISION 05/16/12 B 3.3.24-1 320/320/320 9/26/01 B 3.3.25-1 336/336/337 11/5/03 B 3.3.25-2 Delete,336/336/337 11/5/03 B 3.3.25-3 Delete,336/336/337 11/5/03 B 3.3.25-4 Delete,336/336/337 11/5/03 B 3.3.25-5 Delete,336/336/337 11/5/03 B 3.3.25-6 Delete,336/336/337 11/5/03 B 3.3.26-1 336/336/337 11/5/03 B 3.3.26-2 Delete,336/336/337 11/5/03 B 3.3.26-3 Delete,336/336/337 11/5/03 B 3.3.27-1 BASES REVISION 05/16/12 B 3.3.27-2 BASES REVISION 05/16/12 B 3.3.27-3 BASES REVISION 05/16/12 B 3.3.27-4 BASES REVISION 05/16/12 B 3.3.27-5 BASES REVISION 05/16/12 B 3.3.27-6 BASES REVISION 05/16/12 B 3.3.28-1 BASES REVISION 05/16/12 B 3.3.28-2 BASES REVISION 05/16/12 B 3.3.28-3 BASES REVISION 05/16/12 B 3.3.28-4 BASES REVISION 05/16/12 B 3.4.1-1 BASES REVISION 05/16/12 B 3.4.1-2 BASES REVISION 05/16/12 B 3.4.1-3 BASES REVISION 05/16/12 B 3.4.1-4 BASES REVISION 05/16/12 B 3.4.1-5 BASES REVISION 05/16/12 B 3.4.2-1 300/300/300 12/16/98 LOEP7

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.4.2-2 300/300/300 12/16/98 B 3.4.3-1 BASES REVISION 05/16/12 B 3.4.3-2 BASES REVISION 05/16/12 B 3.4.3-3 BASES REVISION 05/16/12 B 3.4.3-4 BASES REVISION 05/16/12 B 3.4.3-5 BASES REVISION 05/16/12 B 3.4.3-6 BASES REVISION 05/16/12 B 3.4.3-7 BASES REVISION 05/16/12 B 3.4.3-8 BASES REVISION 05/16/12 B 3.4.4-1 BASES REVISION 05/16/12 B 3.4.4-2 BASES REVISION 05/16/12 B 3.4.4-3 BASES REVISION 05/16/12 B 3.4.4-4 BASES REVISION 05/16/12 B 3.4.5-1 BASES REVISION 05/16/12 B 3.4.5-2 BASES REVISION 05/16/12 B 3.4.5-3 BASES REVISION 05/16/12 B 3.4.5-4 BASES REVISION 05/16/12 B 3.4.6-1 BASES REVISION 05/16/12 B3.4.6-2 BASES REVISION 05/16/12 B 3.4.6-3 BASES REVISION 05/16/12 B 3.4.6-4 BASES REVISION 05/16/12 B 3.4.7-1 BASES REVISION 05/16/12 B 3.4.7-2 BASES REVISION 05/16/12 B 3.4.7-3 BASES REVISION 05/16/12 B 3.4.7-4 BASES REVISION 05/16/12 B 3.4.7-5 BASES REVISION 05/16/12 B 3.4.8-1 BASES REVISION 05/16/12 B 3.4.8-2 BASES REVISION 05/16/12 B 3.4.8-3 BASES REVISION 05/16/12 B 3.4.8-4 BASES REVISION 05/16/12 B 3.4.9-1 BASES REVISION 05/16/12 B 3.4.9-2 BASES REVISION 05/16/12 B 3.4.9-3 BASES REVISION 05/16/12 B 3.4.9-4 BASES REVISION 05/16/12 B 3.4.9-5 BASES REVISION 05/16/12 B 3.4.9-6 BASES REVISION 05/16/12 B 3.4.10-1 309/309/309 1/18/00 B 3.4.10-2 309/309/309 1/ 18/00 B 3.4.10-3 309/309/309 1/18/00 B 3.4.10-4 309/309/309 1/18/00 B 3.4.11-1 BASES REVISION 10/12/12 B 3.4.11-2 BASES REVISION 10/12/12 LOEP8

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.4.11-3 BASES REVISION 10/12/12 B 3.4.11-4 BASES REVISION 10/12/12 B 3.4.11-5 DELETE BASES REV 10/12/12 B 3.4.12-1 BASES REVISION 05/16/12 B 3.4.12-2 BASES REVISION 05/16/12 B 3.4.12-3 BASES REVISION 05/16/12 B 3.4.12-4 BASES REVISION 05/16/12 B 3.4.12-5 BASES REVISION 05/16/12 B 3.4.12-6 BASES REVISION 05/16/12 B 3.4.12-7 BASES REVISION 05/16/12 B 3.4.12-8 BASES REVISION 05/16/12 B 3.4.12-9 BASES REVISION 05/16/12 B 3.4.12-10 BASES REVISION 05/16/12 B 3.4.12-11 BASES REVISION 05/16/12 B 3.4.12-12 BASES REVISION 08/16/10 B 3.4.13-1 BASES REVISION 05/16/12 B 3.4.13-2 BASES REVISION 05/16/12 B 3.4.13-3 BASES REVISION 05/16/12 B 3.4.13-4 BASES REVISION 05/16/12 B 3.4.13-5 BASES REVISION 05/16/12 B 3.4.13-6 BASES REVISION 05/16/12 B 3.4.14-1 BASES REVISION 05/16/12 B 3.4.14-2 BASES REVISION 05/16/12 B 3.4.14-3 BASES REVISION 05/16/12 B 3.4.14-4 BASES REVISION 05/16/12 B 3.4.14-5 BASES REVISION 05/16/12 B 3.4.14-6 BASES REVISION 05/16/12 B 3.4.15-1 BASES REVISION 05/16/12 B 3.4.15-2 BASES REVISION 05/16/12 B 3.4.15-3 BASES REVISION 05/16/12 B 3.4.15-4 BASES REVISION 05/16/12 B 3.4.15-5 BASES REVISION 05/16/12 B 3.4.16-1 355/357/356 4/2/07 B 3.4.16-2 355/357/356 4/2/07 B 3.4.16-3 355/357/356 4/2/07 B 3.4.16-4 355/357/356 4/2/07 B 3.4.16-5 355/357/356 4/2/07 B 3.4.16-6 355/357/356 4/2/07 B 3.4.16-7 355/357/356 4/2/07 B 3.5.1-1 BASES REVISION 05/16/12 B 3.5.1-2 BASES REVISION 05/16/12 B 3.5.1-3 BASES REVISION 05/16/12 B 3.5.1-4 BASES REVISION 05/16/12 B 3.5.1-5 BASES REVISION 05/16/12 LOEP9

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.5.1-6 BASES REVISION 05/16/12 B 3.5.1-7 BASES REVISION 05/16/12 B 3.5.1-8 BASES REVISION 05/16/12 B 3.5.2-1 BASES REVISION 05/16/12 B 3.5.2-2 BASES REVISION 05/16/12 B 3.5.2-3 BASES REVISION 05/16/12 B 3.5.2-4 BASES REVISION 05/16/12 B 3.5.2-5 BASES REVISION 05/16/12 B 3.5.2-6 BASES REVISION 05/16/12 B 3.5.2-7 BASES REVISION 05/16/12 B 3.5.2-8 BASES REVISION 05/16/12 B 3.5.2-9 BASES REVISION 05/16/12 B 3.5.2-10 BASES REVISION 05/16/12 B 3.5.2-11 BASES REVISION 05/16/12 B 3.5.2-12 BASES REVISION 05/16/12 B 3.5.2-13 BASES REVISION 05/16/12 B 3.5.2-14 BASES REVISION 05/16/12 B 3.5.3-1 BASES REVISION 05/16/12 B 3.5.3-2 BASES REVISION 05/16/12 B 3.5.3-3 BASES REVISION 05/16/12 B 3.5.3-4 BASES REVISION 05/16/12 B 3.5.3-5 BASES REVISION 05/16/12 B 3.5.3-6 BASES REVISION 05/16/12 B 3.5.3-7 BASES REVISION 05/16/12 B 3.5.3-8 BASES REVISION 05/16/12 B 3.5.3-9 BASES REVISION 05/16/12 B 3.5.3-10 Delete 9/2/04 B 3.5.4-1 BASES REVISION 05/16/12 B 3.5.4-2 BASES REVISION 05/16/12 B 3.5.4-3 BASES REVISION 05/16/12 B 3.5.4-4 BASES REVISION 05/16/12 B 3.5.4-5 BASES REVISION 05/16/12 B 3.5.4-6 BASES REVISION 05/16/12 B 3.6.1-1 BASES REVISION 10/20/11 B 3.6.1-2 BASES REVISION 10/20/11 B 3.6.1-3 BASES REVISION 10/20/11 B 3.6.1-4 BASES REVISION 10/20/11 B 3.6.1-5 Delete 12/16/98 B 3.6.2-1 BASES REVISION 05/16/12 B 3.6.2-2 BASES REVISION 05/16/12 B 3.6.2-3 BASES REVISION 05/16/12 B 3.6.2-4 BASES REVISION 05/16/12 B 3.6.2-5 BASES REVISION 05/16/12 LOEP10

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.6.2-6 BASES REVISION 05/16/12 B 3.6.2-7 BASES REVISION 05/16/12 B 3.6.3-1 BASES REVISION 05/16/12 B 3.6.3-2 BASES REVISION 05/16/12 B 3.6.3-3 BASES REVISION 05/16/12 B 3.6.3-4 BASES REVISION 05/16/12 B 3.6.3-5 BASES REVISION 05/16/12 B 3.6.3-6 BASES REVISION 05/16/12 B 3.6'3-7 BASES REVISION 05/16/12 B 3.6.3-8 BASES REVISION 05/16/12 B 3.6.3-9 BASES REVISION 05/16/12 B.3.6.3-10 BASES REVISION 05/16/12 B 3.6.4-1 BASES REVISION 05/16/12 B 3.6.4-2 BASES REVISION 05/16/12 B 3.6.4-3 BASES REVISION 05/16/12 B 3.6.5-1 BASES REVISION 05/16/12 B 3.6.5-2 BASES REVISION 05/16/12 B 3.6.5-3 BASES REVISION 05/16/12 B 3.6.5-4 BASES REVISION 05/16/12 B 3.6.5-5 BASES REVISION 05/16/12 B 3.6.5-6 BASES REVISION 05/16/12 B 3.6.5-7 BASES REVISION 05/16/12 B 3.6.5-8 BASES REVISION 05/16/12 B 3.6.5-9 BASES REVISION 05/16/12 B 3.6.5-10 BASES REVISION 05/16/12 B 3.6.5-11 BASES REVISION 05/16/12 B 3.7.1-1 BASES REVISION 08/08/12 B 3.7.1-2 BASES REVISION 08/08/12 B 3.7.1-3 BASES REVISION 08/08/12 B 3.7.1-4 BASES REVISION 08/08/12 B 3.7.2-1 BASES REVISION 11/13/12 B 3.7.2-2 BASES REVISION 11/13/12 B 3.7.2-3 BASES REVISION 11/13/12 B 3.7.2-4 BASES REVISION 11/13/12 B 3.7.2-5 BASES REVISION 11/13/12 B 3.7.3-1 BASES REVISION 1/17/06 B 3.7.3-2 BASES REVISION 1/17/06 B 3.7.3-3 BASES REVISION 1/17/06 B 3.7.3-4 BASES REVISION 1/17/06 B 3.7.4-1 BASES REVISION 05/16/12 B3.7.4-2 BASES REVISION 05/16/12 LOEP I1

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B3.7.4-3 BASES REVISION 05/16/12 B3.7.4-4 BASES REVISION 05/16/12 B 3.7.5-1 BASES REVISION 05/16/12 B 3.7.5-2 BASES REVISION 05/16/12 B 3.7.5-3 BASES REVISION 05/16/12 B 3.7.5-4 BASES REVISION 05/16/12 B 3.7.5-5 BASES REVISION 05/16/12 B 3.7.5-6 BASES REVISION 05/16/12 B 3.7.5-7 BASES REVISION 05/16/12 B 3.7.5-8 BASES REVISION 05/16/12 B 3.7.6-1 BASES REVISION 05/16/12 B 3.7.6-2 BASES REVISION 05/16/12 B 3.7.6-3 BASES REVISION 05/16/12 B 3.7.7-1 BASES REVISION 05/16/12 B 3.7.7-2 BASES REVISION 05/16/12 B 3.7.7-3 BASES REVISION 05/16/12 B 3.7.7-4 BASES REVISION 05/16/12 B 3.7.7-5 BASES REVISION 05/16/12 B 3.7.7-6 BASES REVISION 05/16/12 B 3.7.8-1 BASES REVISION 05/16/12 B 3.7.8-2 BASES REVISION 05/16/12 B 3.7.8-3 BASES REVISION 05/16/12 B 3.7.8-4 BASES REVISION 05/16/12 B 3.7.8-5 BASES REVISION 05/16/12 B 3.7.8-6 BASES REVISION 05/16/12 B 3.7.8-7 BASES REVISION 05/16/12 B 3.7.9-1 BASES REVISION 05/16/12 B 3.7.9-2 BASES REVISION 05/16/12 B 3.7.9-3 BASES REVISION 05/16/12 B 3.7.9-4 BASES REVISION 05/16/12 B 3.7.9-5 BASES REVISION 05/16/12 B 3.7.10-1 338/339/339 6/1/04 B 3.7.10-2 Deleted 338/339/339 6/1/04 B 3.7.10-3 Deleted 338/339/339 6/1/04 B 3.7.10-4 Deleted 338/339/339 6/1/04 B 3.7.11-1 BASES REVISION 05/16/12 B 3.7.11-2 BASES REVISION 05/16/12 B 3.7.11-3 BASES REVISION 05/16/12 B 3.7.12-1 BASES REVISION 05/16/12 B 3.7.12-2 BASES REVISION 05/16/12 LOEP 12

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE 3.7.12-3 BASES REVISION 05/16/12 3.7.12-4 BASES REVISION 05/16/12 3.7.12-5 Deleted 351/353/352 6/15/06 B 3.7.13-1 BASES REVISION 08/19/10 B 3.7.13-2 BASES REVISION 08/19/10 B 3.7.13-3 BASES REVISION 08/19/10 B 3.7.13-4 BASES REVISION 08/19/10 B 3.7.13-5 BASES REVISION 08/19/10 B 3.7.14-1 BASES REVISION 05/16/12 B 3.7.14-2 BASES REVISION 05/16/12 B 3.7.14-3 BASES REVISION 05/16/12 B 3.7.15-1 BASES REVISION 10/24/07 B 3.7.15-2 BASES REVISION 10/24/07 B 3.7.15-3 BASES REVISION 10/24/07 B 3.7.16-1 BASES REVISION 05/16/12 B 3.7.16-2 BASES REVISION 05/16/12 B 3.7.16-3 BASES REVISION 05/16/12 B 3.7.16-4 BASES REVISION 05/16/12 B 3.7.16-5 BASES REVISION 05/16/12 B 3.7.16-6 BASES REVISION 05/16/12 B 3.7.16-7 BASES REVISION 05/16/12 B 3.7.17-1 BASES REVISION 4/12/06 B 3.7.17-2 BASES REVISION 4/12/06 B 3.7.17-3 BASES REVISION 4/12/06 B 3.7.18-1 351/353/352 6/15/06 B 3.7.18-2 351/353/352 6/15/06 B 3.7.18-3 351/353/352 6/15/06 B 3.7.18-4 351/353/352 6/15/06 B 3.8.1-1 BASES REVISION 01/16/14 B 3.8.1-2 BASES REVISION 01/16/14 B 3.8.1-3 BASES REVISION 01/16/14 B 3.8.1-4 BASES REVISION 01/16/14 B 3.8.1-5 BASES REVISION 01/16/14 B 3.8.1-6 BASES REVISION 01/16/14 B 3.8.1-7 BASES REVISION 01/16/14 B 3.8.1-8 BASES REVISION 01/16/14 B 3.8.1-9 BASES REVISION 01/16/14 B 3.8.1-10 BASES REVISION 01/16/14 B 3.8.1-11 BASES REVISION 01/16/14 B 3.8.1-12 BASES REVISION 01/16/14 B 3.8.1-13 BASES REVISION 01/16/14 B 3.8.1-14 BASES REVISION 01/16/14 LOEP 13

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.8.1-15 BASES REVISION 01/16/14 B 3.8.1-16 BASES REVISION 01/16/14 B 3.8.1-17 BASES REVISION 01/16/14 B 3.8.1-18 BASES REVISION 01/16/14 B 3.8.1-19 BASES REVISION 01/16/14 B 3.8.1-20 BASES REVISION 01/16/14 B 3.8.1-21 BASES REVISION 01/16/14 B 3.8.1-22 BASES REVISION 01/16/14 B 3.8.1-23 BASES REVISION 01/16/14 B 3.8.1-24 BASES REVISION 01/16/14 B 3.8.1-25 BASES REVISION 01/16/14 B 3.8.1-26 BASES REVISION 01/16/14 B 3.8.2-1 BASES REVISION 04/07/11 B 3.8.2-2 BASES REVISION 04/07/11 B 3.8.2-3 BASES REVISION 04/07/11 B 3.8.2-4 BASES REVISION 04/07/11 B 3.8.2-5 BASES REVISION 04/07/11 B 3.8.2-6 BASES REVISION 04/07/11 B 3.8.2-7 BASES REVISION 04/07/11 B 3.8.3-1 BASES REVISION 05/16/12 B 3.8.3-2 BASES REVISION 05/16/12 B 3.8.3-3 BASES REVISION 05/16/12 B 3.8.3-4 BASES REVISION 05/16/12 B 3.8.3-5 BASES REVISION 05/16/12 B 3.8.3-6 BASES REVISION 05/16/12 B 3.8.3-7 BASES REVISION 05/16/12 B 3.8.3-8 BASES REVISION 05/16/12 B 3.8.3-9 BASES REVISION 05/16/12 B 3.8.3-10 BASES REVISION 05/16/12 B 3.8.4-1 338/339/339 12/18/07 B 3.8.4-2 338/339/339 12/18/07 B 3.8.4-3 338/339/339 12/18/07 B 3.8.4-4 300/300/300 12/18/07 LOEP14

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.8.5-1 BASES REVISION 05/16/12 B 3.8.5-2 BASES REVISION 05/16/12 B 3.8.5-3 BASES REVISION 05/16/12 B 3.8.5-4 BASES REVISION 05/16/12 B 3.8.5-5 BASES REVISION 05/16/12 B 3.8.5-6 BASES REVISION 05/16/12 B 3.8.6-1 BASES REVISION 05/16/12 B 3.8.6-2 BASES REVISION 05/16/12 B 3.8.6-3 BASES REVISION 05/16/12 B 3.8.6-4 BASES REVISION 05/16/12 B 3.8.7-1 BASES REVISION 05/16/12 B 3.8.7-2 BASES REVISION 05/16/12 B 3.8.7-3 BASES REVISION 05/16/12 B 3.8.8-1 BASES REVISION 05/16/12 B 3.8.8-2 BASES REVISION 05/16/12 B 3.8.8-3 BASES REVISION 05/16/12 B 3.8.8-4 BASES REVISION 05/16/12 B 3.8.8-5 BASES REVISION 05/16/12 B 3.8.8-6 BASES REVISION 05/16/12 B 3.8.8-7 BASES REVISION 05/16/12 B 3.8.8-8 BASES REVISION 05/16/12 B 3.8.8-9 BASES REVISION 05/16/12 B 3.8.9-1 BASES REVISION 05/16/12 B 3.8.9-2 BASES REVISION 05/16/12 B 3.8.9-3 BASES REVISION 05/16/12 B 3.8.9-4 BASES REVISION 05/16/12 B 3.9.1-1 BASES REVISION 05/16/12 B 3.9.1-2 BASES REVISION 05/16/12 B 3.9.1-3 BASES REVISION 05/16/12 LOEP 15

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.9.2-1 BASES REVISION 05/16/12 B 3.9.2-2 BASES REVISION 05/16/12 B 3.9.2-3 BASES REVISION 05/16/12 B 3.9.2-4 BASES REVISION 05/16/12 B 3.9.3-1 BASES REVISION 05/16/12 B 3.9.3-2 BASES REVISION 05/16/12 B 3.9.3-3 BASES REVISION 05/16/12 B 3.9.3-4 BASES REVISION 05/16/12 B 3.9.3-5 BASES REVISION 05/16/12 B 3.9.4-1 BASES REVISION 05/16/12 B 3.9.4-2 BASES REVISION 05/16/12 B 3.9.4-3 BASES REVISION 05/16/12 B 3.9.4-4 BASES REVISION 05/16/12 B 3.9.5-1 BASES REVISION 05/16/12 B 3.9.5-2 BASES REVISION 05/16/12 B 3.9.5-3 BASES REVISON 05/16/12 B 3.9.5-4 BASES REVISION 05/16/12 B 3.9.6-1 BASES REVISION 05/16/12 B 3.9.6-2 BASES REVISION 05/16/12 B 3.9.6-3 BASES REVISION 05/16/12 B3.9.7-1 BASES REVISION 05/16/12 B3.9.7-2 BASES REVISION 05/16/12 B3.9.7-3 BASES REVISION 05/16/12 B 3.10.1-1 BASES REVISION 07/25/13 B 3.10.1-2 BASES REVISION 07/25/13 B 3.10.1-3 BASES REVISION 07/25/13 B 3.10.1-4 BASES REVISION 07/25/13 B 3.10.1-5 BASES REVISION 07/25/13 B 3.10.1-6 BASES REVISION 07/25/13 B 3.10.1-7 BASES REVISION 07/25/13 B 3.10.1-8 BASES REVISION 07/25/13 B 3.10.1-9 BASES REVISION 07/25/13 B 3.10.1-10 BASES REVISION 07/25/13 B 3.10.1-11 BASES REVISION 07/25/13 B 3.10.1-12 BASES REVISION 07/25/13 B 3.10.1-13 BASES REVISION 07/25/13 B 3.10.1-14 BASES REVISION 07/25/13 B 3.10.1-15 BASES REVISION 07/25/13 B 3.10.1-16 BASES REVISION 07/25/13 B 3.10.1-17 BASES REVISION 07/25/13 LOEP 16

OCONEE NUCLEAR STATION TECHNICAL SPECIFICATIONS-BASES REVISED 02/06/14 LIST OF EFFECTIVE PAGES PAGE AMENDMENT BASES REVISION DATE B 3.10.1-18 BASES REVISION 07/25/13 B 3.10.1-19 BASES REVISION 07/25/13 B 3.10.2-1 BASES REVISION 07/01/13 B 3.10.2-2 BASES REVISION 07/01/13 B 3.10.2-3 BASES REVISION 07/01/13 B 3.10.2-4 BASES REVISION 07/01/13 B 3.10.2-5 BASES REVISION 07/01/13 B 3.10.2-6 BASES REVISION 07/01/13 LOEP17

RCS Pressure SL B 2.1.2 B 2.0 SAFETY LIMITS (SLs)

B 2.1.2 Reactor Coolant System (RCS) Pressure SL BASES BACKGROUND According to ONS Design Criteria (Ref. 1), the reactor coolant pressure boundary (RCPB) design conditions are not to be exceeded during normal operation nor during anticipated transients. Normal Operation is defined as Service Level A and Anticipated Transient (or Upset Operation) is defined as Service Level B (Ref 7). ONS Design Criteria (Ref. 1), specifies that reactivity accidents including rod ejection (i.e., Service Level C) do not result in damage to the RCPB greater than limited local yielding.

The design pressure of the RCS is 2500 psig. During normal operation and anticipated transients, the RCS pressure is kept from exceeding the design pressure by more than 10% in order to remain in accordance with Section III of the ASME Code (Ref. 2). Hence, the safety limit is 2750 psig.

Note that the Rod Ejection Accident is not an anticipated transient and, thus, has a different limit. To ensure system integrity, all RCS components are hydrostatically tested at 125% of design pressure prior to initial operation, according to the ASME Code requirements. Following inception of unit operation, RCS components shall be pressure tested, in accordance with the requirements of ASME Code, Section Xl (Ref. 3).

APPLICABLE The RCS pressurizer safety valves, operating in conjunction SAFETY ANALYSES with the Reactor Protection System trip settings, ensure that the RCS pressure SL will not be exceeded.

The RCS pressurizer safety valves are sized to prevent system pressure from exceeding the design pressure by more than 10%, in accordance with Section III of the ASME Code for Nuclear Power Plant Components (Ref.

2).

The limiting peak pressure transient, as determined by the safety analyses (Ref. 5), is performed using conservative assumptions relative to pressure control devices.

More specifically, no credit is taken for operation of the following:

a. Pressurizer power operated relief valve (PORV);

b. Steam line turbine bypass valves; OCONEE UNITS 1, 2, & 3 B 2.1.2-1 BASES REVISION DATED 02/06/14 I

RCS Pressure SL B 2.1.2 BASES APPLICABLE c. Control system runback of reactor and turbine power; SAFETY ANALYSES and (continued)

d. Pressurizer spray valve.

SAFETY LIMITS The maximum transient pressure allowed in the RCS pressure vessel under the ASME Code,Section III (Ref. 2), is 110% of design pressure.

The maximum transient pressure allowed in the RCS piping, valves, and fittings under USAS, Section B31.7 (Ref. 4), is 110% of design pressure.

Therefore, the SL on maximum allowable RCS pressure is 2750 psig.

Overpressurization of the RCS can result in a breach of the RCPB. If such a breach occurs in conjunction with a fuel cladding failure, fission products could enter the containment atmosphere and steam generators, raising concerns relative to limits on radioactive releases specified in 10 CFR 100, "Reactor Site Criteria" (Ref. 6).

APPLICABILITY SL 2.1.2 applies in MODES 1, 2, 3, 4, and 5 because this SL could be approached or exceeded in these MODES during overpressurization events. The SL is not applicable in MODE 6 because the reactor vessel head closure bolts are not fully tightened, making it unlikely that the RCS can be pressurized significantly.

SAFETY LIMIT The following SL violation responses are applicable to the VIOLATIONS RCS pressure SL.

2.2.2 If the RCS pressure SL is violated when the reactor is in MODE 1 or 2, the requirement is to restore compliance and be in MODE 3 within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

Exceeding the RCS pressure SL may cause immediate RCS failure and create a potential for radioactive releases in excess of 10 CFR 100, "Reactor Site Criteria," limits (Ref. 6).

The allowed Completion Time of 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> is based on the importance of reducing power level to a MODE of operation where the potential for challenges to safety systems is minimized.

OCONEE UNITS 1, 2, &3 B 2.1.2-2 BASES REVISION DATED 02/06/14 I

RCS Pressure SL B 2.1.2 BASES SAFETY LIMIT 2.2.3 VIOLATIONS (continued) If the RCS pressure SL is exceeded in MODE 3, 4, or 5, RCS pressure must be restored to within the SL value within 5 minutes.

Exceeding the RCS pressure SL in MODE 3, 4, or 5 is potentially more severe than exceeding this SL in MODE 1 or 2, since the reactor vessel temperature may be lower and the vessel material, consequently, less ductile. As such, pressure must be reduced to less than the SL within 5 minutes. This action does not require reducing MODES, since this would require reducing temperature, which would compound the problem by adding thermal gradient stresses to the existing pressure stress.

REFERENCES 1. UFSAR, Section 3.1.

2. ASME Boiler and Pressure Vessel Code,Section III, Article NB-7000.

3. ASME Boiler and Pressure Vessel Code,Section XI, Article IW-5000.

4. ASME USAS B31.7, Nuclear Power Piping, dated February 1968 with June 1968 Errata.

5. UFSAR, Chapters 5 and 15.

6. 10 CFR 100.

7. ASME Boiler and Pressure Vessel Code, 1983 Edition,Section III, Article NCA-2140.

OCONEE UNITS 1, 2, & 3 B 2.1.2-3 BASES REVISION DATED 02/06/14 I