CP-201301274, Revision of Commitment Number 4457005 Related to Comanche Peak Nuclear Power Plant, License Amendment Request 12-007, Revision to Technical Specification 3.8.1, AC Sources-Operating, for Two, 14-Day Completion Times for Offsite Circuits

Revision of Commitment Number 4457005 Related to Comanche Peak Nuclear Power Plant, License Amendment Request 12-007, Revision to Technical Specification 3.8.1, AC Sources-Operating, for Two, 14-Day Completion Times for Offsite Circuits

ML13308B905
Person / Time
Site:	Comanche Peak
Issue date:	10/24/2013
From:	Flores R, Thomas McCool Luminant Generation Co, Luminant Power
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
CP-201301274
Download: ML13308B905 (2)

Text

Rafael Flores Lumninant Power Senior Vice President P 0 Box 1002

& Chief Nuclear Officer 6322 North FM 56 rafael.flores@luminant.com Glen Rose, TX 76043 Luminant T 254 897 5590 C 817 559 0403 F 254 897 6652 CP-201301274 REF 10 CFR 50.90 Log # TXX-13156 File # 236 October 24, 2013 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001

SUBJECT:

REVISION OF COMMITMENT NUMBER 4457005 RELATED TO COMANCHE PEAK NUCLEAR POWER PLANT (CPNPP) DOCKET NOS. 50-445 AND 50-446, LICENSE AMENDMENT REQUEST (LAR)12-007, REVISION TO TECHNICAL SPECIFICATION 3.8.1, "AC SOURCES - OPERATING," FOR TWO, 14-DAY COMPLETION TIMES FOR OFFSITE CIRCUITS

REFERENCES:

1. NRC Branch Technical Position 8-8, "Onsite (Emergency Diesel Generators) and Offsite Power Sources Allowed Outage Time Extensions" dated Initial -

February 2012..

2. Conference call with NRC and Luminant Power on October 22, 2013, concerning the subject commitment.

Dear Sir or Madam:

The purpose of this letter is to provide notification to the Nuclear Regulatory Commission (NRC) of a revision to regulatory commitment number 4457005.

License Amendment (LA) 160 to the Comanche Peak Nuclear Power Plant (CPNPP) Unit 1 and Unit 2 Technical Specifications (TSs) was issued by the NRC on September 18, 2012. The Safety Evaluation for LA 160 contained commitments 4456419 and 4457005. Both these commitments are identical in wording but are applicable during two distinct, but different, periods. Both commitments state:

"During a 14-day CT, if an APDG becomes unavailable, both Units shall enter Condition C of TS 3.8.1 and start shutting down within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. (This 24-hour period will only be allowed once within a 14-day CT.)"

During a teleconference on October 22, 2013 (Reference 2) with the NRC, Luminant Power proposed to revise both commitments as provided below in order to more closely align with the intent of Branch Technical Position 8-8 (Reference 1), which is Unit specific in its wording with respect to alternate alternating current power sources, and to clarify the intended application of A member of the STARS Alliance Callaway

• Comanche Peak - Diablo Canyon - Palo Verde

• San Onofre

• South Texas Project - Wolf Creek AbDI

TXX-13156 Page 2 of 2 10/24/2013 the CPNPP TSs in relation to the commitments. However, since the period of applicability for commitment number 4456419 has already passed, there is no longer any need to revise commitment 4456419. Therefore, Luminant Power proposes to revise only commitment number 4457005 as provided below:

"During a 14-day CT, if an APDG becomes unavailable, the affected Unit shall enter Condition C of TS 3.8.1 and comply with the Required Actions. If the CT for the Condition C Required Actions is not met, then Condition G of TS 3.8.1 shall be entered. This allowance will only be exercised once within a 14-day CT for a given Unit. For any second, or subsequent, unavailability of an APDG for a given Unit, the affected Unit shall immediately enter TS 3.0.3. In all cases, the normal rules governing application of TSs in section 1.0 of the CPNPP TSs shall apply."

This revision to commitment 4457005 has been reviewed according to the criteria in Nuclear Energy Institute 99-04, "Guidelines for Managing NRC Commitment Changes." Based on the review, Luminant Power has concluded that notification of the intended change to the NRC is required.

If you have any questions regarding this request, please contact Tamera J. Ervin-Walker at 254-897-6902 or tamera.ervin@luminant.com.

This letter contains revised commitment as described above.

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

Executed on October 24, 2013.

Sincerely, Luminant Generation Company LLC Rafael Flores By:

Thomas P. McCool Vice President, Station Support TJEW c- Eric J. Leeds, Director, Office of Nuclear Reactor Regulation Steven A. Reynolds, Region IV Jessica A. Kratchman, NRR/JLD/PMB Balwant K. Singal, NRR Resident Inspectors, Comanche Peak