BVY 13-050, Response to Request for Additional Information Regarding Relief Request No. RR-PR-02

Response to Request for Additional Information Regarding Relief Request No. RR-PR-02

ML13162A399
Person / Time
Site:	Vermont Yankee
Issue date:	06/06/2013
From:	Wamser C Entergy Nuclear Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
BVY 13-050
Download: ML13162A399 (10)

Text

Entergy Nuclear Operations, Inc.

1MEntergy Vermont Yankee 320 Governor Hunt Rd.

Vernon, VT 802-257-7711 Christopher J. Wamser Site Vice President BVY 13-050 June 6, 2013 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001

SUBJECT:

Response to Request for Additional Information Regarding Relief Request No. RR-PR-02 Vermont Yankee Nuclear Power Station Docket No. 50-271 License No. DPR-28

REFERENCES:

1. Letter, Entergy Nuclear Operations, Inc. to USNRC, "Inservice Testing Program Plan for the Fifth Ten-Year Interval," BVY 13-008, dated February 1, 2013

Dear Sir or Madam:

In Reference 1, Entergy Nuclear Operations, Inc. (Entergy) submitted the inservice test (IST) program and relief requests for the fifth 10-year interval for Vermont Yankee Nuclear Power Station. This letter provides supplemental information to address a request for additional information (RAI) received on May 9, 2013. Attachment 1 to this submittal provides Entergy's response to the RAI. Attachments 2, 3 and 4 contain the requested vibration data for points 0-3, 1-3, and 1-4, respectively.

This letter contains no new regulatory commitments.

Should you have any questions concerning this letter or require additional information, please contact Mr. Robert Wanczyk at 802-451-3166.

Sincerely, CJW/plc Ac)(4-7

)LA7J_,

I

BVY 13-050 / Page 2 of 2 Attachments: 1. Response to Request for Additional Information

2. Vibration Point 0-3 Test Data

3. Vibration Point 1-3 Test Data

4. Vibration Point 1-4 Test Data cc: Mr. William M. Dean Regional Administrator, Region 1 U.S. Nuclear Regulatory Commission 2100 Renaissance Blvd, Suite 100 King of Prussia, PA 19406-2713 Mr. Richard V. Guzman, Project Manager Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop O-8-C2 Washington, DC 20555 USNRC Resident Inspector Entergy Nuclear Vermont Yankee, LLC 320 Governor Hunt Road Vernon, Vermont 05354 Mr. Christopher Recchia Commissioner Vermont Department of Public Service 112 State Street - Drawer 20 Montpelier, Vermont 05620-2601

BVY 13-050 Docket 50-271 Attachment 1 Vermont Yankee Nuclear Power Station Response to Request for Additional Information

BVY 13-050 / Attachment 1 / page 1 of 1 REQUEST FOR ADDITIONAL INFORMATION (RAI)

ENTERY NUCLEAR OPERATIONS. INC.

VERMONT YAKEE NUCLEAR POWER STATION ALTERNATIVE REQUEST RR-PR-P02 DOCKET NUMBER 50-271 (TAC NO. MF0624)

RAI-1

In the licensee's relief request dated February 1, 2013, the licensee submitted an alternative request for the High Pressure Coolant Injection (HPCI) main/booster pump combination, P44-1A/B, from the acceptance criteria specified in Table 5121-1 of the American Society of Mechanical Engineers (ASME) Code for Operationand Maintenance of Nuclear Power Plants(OM Code). Specifically, the licensee proposed to use higher acceptable and alert ranges than those specified in the OM Code for the vibration points 1-3, 0-3 and 1-4. The licensee stated that of the ten vibrations measured during inservice testing, only three have not been reduced below the OM Code Alert Range limits. Please provide for NRC staff review, a detailed history of past test results taken from these vibration points: 1-3, 0-3, and 1-4.

Response

For clarification, only vibration point 1-3 consistently remains above the OM Code Alert Range limit of 0.325 inches per second (ips). Vibration points 0-3 and 1-4 remain at or near the Code Alert Range Limit of 0.325 ips such that minimal margin remains.

Comprehensive and quarterly vibration test data for the past ten years for points 0-3, 1-3 and I-4 are included as Attachments 2, 3 and 4, respectively. The acceptable range limit of 0.575 inches/second described in the relief request is indicated on each chart.

BVY 13-050 Docket 50-271 Attachment 2 Vermont Yankee Nuclear Power Station Vibration Point 0-3 Test Data

HPCI P-44-1A; Vibration Point 0-3 0.700 0.600 0,500 0,400 8

a, 0-3 Vibration

-Maximum 0.575 0.300 . 0.325 Code Alert 0.200 0.100 ALL BOXED DATA POINTS ARE COMPREHENSIVE TESTS 0---- -- ----- - ------

00000000006060000000o000ooooooooooo 0000000000oooooooo0oo 0o0oooo 00.-.-..................

o ...

000002 _001 8 8-00"01-00

_2 _08-1-0 00I - -----

_0 0 - NNN10N U NNN a,-0 -0N-0 N ONNNQ_ a-0__0-000 -W 0- 0 -" U NNNNNNNNNNNNNNN0NNN

_ NNN0 -_0-w 0- 0N

BVY 13-050 Docket 50-271 Attachment 3 Vermont Yankee Nuclear Power Station Vibration Point 1-3 Test Data

HPCI P-44-1A; Vibration Point 1-3 0.700 0.600 0.500 0.400 0.

-- 1-3 Vibration

-Maximum 0.575 0.300 . 0.325 Code Alert 0.200 0.100 ALL BOXED DATA POINTS ARE COMPREHENSIVE TESTS 000~ O0O000~00000~ 00000 0000~0--- --------- _

oooo NIA N wn.- NtoCooo4r nIN qO* n -N1 OIW N01 InCIWICO IN IO 1 wn-I IOC W I O *flNW INNInOWN WI-coo W

• fOW 0 Q WNO INININooININIoooIINNooINNNINoNNNooooINIoooNIINININII.......IN...N...............IN.. n,*o 0.0000 NM N INNOQIWNW Qf 1111WNW NnON 0 **uI WLO-IO

• - 0000

BVY 13-050 Docket 50-271 Attachment 4 Vermont Yankee Nuclear Power Station Vibration Point 1-4 Test Data

HPCI P-44-1A; Vibration Point 1-4 0.700 0.600 0.500 0.400 S

-"0-1-4 Vibration

-Maximum 0.575 0.300

. 0.325 Code Alert 0.200 0.100 ALL BOXED DATA POINTS ARE COMPREHENSIVE TESTS 0.000