GNRO-2003/00064, Technical Specification Bases Update to the NRC for Period Dated November 20, 2003 for Grand Gulf Nuclear Station

Technical Specification Bases Update to the NRC for Period Dated November 20, 2003 for Grand Gulf Nuclear Station

ML033430461
Person / Time
Site:	Grand Gulf
Issue date:	11/20/2003
From:	Bottemiller C Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GNRO-2003/00064
Download: ML033430461 (5)

Text

Entergy Operations, Inc.

e Entergy Waterloo Road P.O. Box 756 Port Gibson, MS 39150 Tel 601 437 6299 Charles A. Bottemiller Manager Plant Ucensing November 20, 2003 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Attention: Document Control Desk

Subject:

Technical Specification Bases Update to the NRC for Period Dated November 20, 2003 Grand Gulf Nuclear Station Docket No. 50-416 License No. NPF-29 GNRO-2003/00064 Ladies and Gentlemen:

Pursuant to Grand Gulf Nuclear Station (GGNS) Technical Specification 5.5.11, Entergy Operations, Inc. hereby submits an update of all changes made to GGNS Technical Specification Bases since the last submittal (GNRO-2003/00035 letter dated June 6, 2003 to the NRC from GGNS). This update is consistent with update frequency listed in 10CFR50.71 (e).

This letter does not contain any commitments.

Should you have any questions, please contact Rita Jackson at (601) 437-2149.

Yours truly, CJI5 CAB/RRJ attachment: GGNS Technical Specification Bases Revised Pages cc: (See Next Page) 14-bD I

November 20, 2003 G NRO-2003/00064 PAGE 2 of 2 cc:

Hoeg T. L. (GGNS Senior Resident) (w/a)

Levanway D. E. (Wise Carter) (w/a)

Reynolds N. S. (w/a)

Smith L. J. (Wise Carter) (w/a)

Thomas H. L. (w/o)

U.S. Nuclear Regulatory Commission ALL LETTERS ATTN: Mr. Bruce Mallett (w/2) 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-4005 U.S. Nuclear Regulatory Commission ALL LETTERS - COURIER ATTN: Mr. Bhalchandra Vaidya, NRR/DLPM (w/2) DELIVERY (FEDEX, ETC.)

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ATTACHMENT to GNRO-2003/00064 Grand Gulf Technical Specification Bases Revised Pages dated November 20, 2003 LDC# BASES PAGES AFFECTED _ TOPIC of CHANGE 03067 B 3.8-58, B 3.8-59 Technical Specification Amendment 159 implementation

DC Sources - Operating B 3.8.4 BASES SURVEILLANCE SR 3.8.4.7 REQUIREMENTS (continued) A battery service test is a special-test of the battery's capability, as found, to satisfy the design requirements (battery duty cycle) of the DC electrical power system.

The discharge rate and test length (4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> for Division 1 and Division 2 and 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for Division 3) correspond to the design duty cycle requirements.as specified in Reference 4.

The Surveillance Frequency of 18 months is consistent with the recommendations of Regulatory Guide 1.32 (Ref. 9) and Regulatory Guide 1.129 (Ref. 10), which state that the battery service test should be performed during refueling operations or at some other outage, with intervals between tests not to exceed 18 months.

This SR is modified by two Notes. Note 1 allows the once per 60 months performance of SR 3.8.4.8 in lieu of SR 3.8.4.7. This substitution is acceptable because SR 3.8.4.8 represents a more severe test of battery capacity than SR 3.8.4.7. The reason for Note 2 is that performing the Surveillance would remove a required DC electrical power subsystem from service, perturb the electrical distribution system, and challenge safety systems. The Division 3 test may be performed in MODE 1,;2, or 3 in conjunction with HPCS system outages. Credit may'.be taken for unplanned events that satisfy the Surveillance.

SR 3.8.4.8-A battery performance test is a test of constant current capacity of a battery, normally done in the as found condition, after having been in service, to detect any change in the capacity determined by the acceptance test.

The test is intended to determine overall battery degradation due to age and usage.

The acceptance criteria for this Surveillance is consistent with IEEE-450 (Ref. 8) and IEEE-485 (Ref. 11). These references recommend that the battery be replaced if its capacity is below 80% of the manufacturer's rating. A capacity of 80% shows that the battery rate of deterioration is increasing, even if there is ample capacity to meet the load requirements.

(continued)

GRAND GULF 3.8-58 LDC 03067

DC Sources - Operating B 3.8.4 BASES SURVEILLANCE SR 3.8.4.8 (continued)

REQUIREMENTS The Surveillance Frequency for this test is normally 60 months. If the battery shows degradation, or if the battery has reached 85% of its expected life and capacity is

< 100% of the manufacturer's rating, the Surveillance Frequency is reduced to 12 months. However, if the battery shows no degradation but has reached 85% of its expected life, the Surveillance Frequency is only reduced to 24 months for batteries that retain capacity > 100% of the manufacturer's rating. Degradation is indicated when the battery capacity drops by more than 10% of rated capacity relative to its capacity on the previous performance test or is below 90% of the manufacturer's rating. These Frequencies are based on the recommendations in IEEE-450 (Ref. 8).

- This SR is modified by a Note. The reason for the Note is that performing the Surveillance would remove a required DC electrical power subsystem from service, perturb the electrical distribution system, and challenge safety systems. The Division 3 test may be performed in MODE 1, 2, or 3 in conjunction with HPCS system outages. Credit may be taken for unplanned events that satisfy the Surveillance.

REFERENCES 1. 10 CFR 50, Appendix A, GDC 17.

2. Regulatory Guide 1.6, March 10, 1971.

3. IEEE Standard 308, 1978.

4. UFSAR, Section 8.3.2.

5. UFSAR, Chapter 6.

6. UFSAR, Chapter 15.

7. Regulatory Guide 1.93, December 1974.

8. IEEE Standard 450, 1987.

9. Regulatory Guide 1.32, February 1977.

10. Regulatory Guide 1.129, December 1974.

11. IEEE Standard 485.

LDC 03067 B 3.8-59 GRAND GULF B 3.8-59 LDC 03067