CNS-15-002, License Amendment Request for Changes to Technical Specification 3.3.2, Engineered Safety Feature Actuation System Instrumentation and TS 3.3.5, Loss of Power Diesel Generator Start Instrumentation Resolution of Operable.

License Amendment Request for Changes to Technical Specification 3.3.2, Engineered Safety Feature Actuation System Instrumentation and TS 3.3.5, Loss of Power Diesel Generator Start Instrumentation Resolution of Operable.

ML15020A018
Person / Time
Site:	Catawba
Issue date:	01/15/2015
From:	Henderson K Duke Energy Carolinas
To:	Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML15020A015	List: CNS-15-002, License Amendment Request for Changes to Technical Specification 3.3.2, Engineered Safety Feature Actuation System Instrumentation and TS 3.3.5, Loss of Power Diesel Generator Start Instrumentation Resolution of Operable. ML15020A019
References
CNS-15-002
Download: ML15020A018 (3)

Text

Kelvin Henderson Vice President ENERGY. Catavwba Nuclear Station Duke Energy CNS-15-002 CNO1VP 1 4800 Concord Road York, SC 29745 January 15, 2015 o: 803.701.4251 f: 803.701.3221 10 CFR 50.90 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001

Subject:

Duke Energy Carolinas, LLC (Duke Energy)

Catawba Nuclear Station, Units 1 and 2 Docket Numbers 50-413 and 50-414 License Amendment Request (LAR) for Changes to Technical Specification (TS) 3.3.2, "Engineered Safety Feature Actuation System (ESFAS) Instrumentation" and TS 3.3.5, "Loss of Power (LOP) Diesel Generator (DG) Start Instrumentation" Resolution of Operable But Degraded Condition Due to Non-Conservative TS

References:

1. Letter from Duke Energy to NRC, same subject, dated November 24, 2014.

2. Electronic mail from NRC to Duke Energy, dated January 5, 2015.

The Reference 1 letter submitted a LAR to: 1) request NRC review and approval to revise the Allowable Value parameter for the TS 3.3.2 Table 3.3.2-1, "Engineered Safety Feature Actuation System Instrumentation" function for Auxiliary Feedwater Loss of Offsite Power (Function 6.d.) and for the TS 3.3.5 Loss of Voltage function in Surveillance Requirement (SR) 3.3.5.2 in order to make this parameter more restrictive; 2) lower the Nominal Trip Setpoint parameter for this function in order to gain additional margin to what is known as a "double sequencing event; and 3) add applicable footnotes to the affected TS 3.3.2 function in accordance with TS Task Force Traveler TSTF-493, Revision 4, "Clarify Application of Setpoint Methodology for LSSS Functions".

As part of the acceptance review of the LAR, the NRC requested Duke Energy via the Reference 2 electronic mail to docket calculation CNC-1 381.05-00-0017, "Class 1 E Diesel Protective Relaying and Sequencer Undervoltage Relay Settings".

Accordingly, please find the requested calculation attached to this letter.

Pursuant to 10 CFR 50.91, a copy of this LAR supplement has been forwarded to the appropriate State of South Carolina official.

There are no regulatory commitments contained in this letter or its attachment.

www.duke-energy.com

U.S. Nuclear Regulatory Commission Page 2 January 15, 2015 If you have any questions or need additional information on this matter, please contact L.J.

Rudy at (803) 701-3084.

I declare under penalty of perjury that the foregoing is true and correct.

Executed on January 15, 2015.

Very truly yours, Kelvin Henderson Vice President, Catawba Nuclear Station LJR/s Attachment

U.S. Nuclear Regulatory Commission Page 3 January 15, 2015 xc (with attachment):

V.M. McCree Regional Administrator U.S. Nuclear Regulatory Commission - Region II Marquis One Tower 245 Peachtree Center Ave., NE Suite 1200 Atlanta, GA 30303-1257 G.A. Hutto, III Senior Resident Inspector U.S. Nuclear Regulatory Commission Catawba Nuclear Station G.E. Miller (addressee only)

NRC Project Manager U.S. Nuclear Regulatory Commission One White Flint North, Mail Stop 8 G9A 11555 Rockville Pike Rockville, MD 20852-2738 S.E. Jenkins Manager Radioactive & Infectious Waste Management Division of Waste Management South Carolina Department of Health and Environmental Control 2600 Bull St.

Columbia, SC 29201