ML17277B116

Confirms Resolution of SSER3 (NUREG-0892) Issue Re Seismic, Environ & Operability Qualifications of Valve MS-V-22C. Issuance of GE Rept Awaiting Final Check

ML17277B116
Person / Time
Site:	Columbia
Issue date:	11/23/1983
From:	Sorensen G WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	Schwencer A Office of Nuclear Reactor Regulation
References
RTR-NUREG-0892, RTR-NUREG-892 GO2-83-1092, NUDOCS 8312020072
Download: ML17277B116 (5)

Text

REGULATORY ORMATION DISTRIBUTION SYS, 8 (RIDS)

AOCESSION NBR:8312020072 DOC ~ DATE: 83/11/23 NOTARIZED:

NO DOCKET FACIL:50 397 NPPSS Nucleal.ProjectE Unit 2i Washington Public Powe 05000397 AUTH~ NAME AUTHOR AFFILIATION SORENSONiG 0, llashington.Public Power Supply 'System

'RECIP ~ NAME RECIPIENT AFFILIATION SCH'HENCEREA, Licensing Branch "2

SUBJECT:

Confirms resolution ofSER.Suppl 3 (NUREG-0892) issue re.

seismicEenviran 8 operability qualifications of valve MS V 22O;Issua'nce of GE"t apt waiting final check.'ISTRISUTION CODE:

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Washington Public Power Supply System P.O. Box 968 3000 George Washington Way Richland, Washington 99352 (509) 372-5000

November, 23, 1983 G02-83-1092 Docket No. 50-397 Director of Nuclear Reactor Regulation Attention:

Mr. A. Schwencer, Chief Licensing Branch No.

2 Division of Licensing U.S. Nuclear Regulatory Commission Washington.

D.C.

20555

Subject:

NUCLEAR PROJECT NO.

2 QUALIFICATION OF PVORT AUDIT ITEM MS-V-22C

Reference:

NUREG-0892 WNP-2 SER Supplement No.

3 In response to WNP-2 SSER3, Section

3. 10.2.2, this letter provides confirmation that the seismic, operability, and environmental concerns raised against valve MS-V-22C are resolved.,

l Our planned seismic qualification similarity'analysis as described in

SSER3, Section

3. 10.2.2, is now substantially

complete, and the:WNP-2 valves were shown to be qualified.

The final document preparation and checking required prior to General Electric issue of the report to the Supply System has not, however, been completed.

The Supply System has conducted two in-situ tests on the valve assembly.

The first, a in-situ static deflection load stroke test, consisted of applying 12,800 pounds to the pneumatic operator cylinder flange in the weakest yoke bending axis, and the valve stroked in the deflected condition.

Operating time was within specification limits before,

during, and after the test.

Our second test consisted of in-situ tests to determine the resonant frequencies of each control valve, the hydrau-lic damper assembly, and the limit switch mounting bracket.

Results indicated no fundamental frequencies which would compromise the simi-larity analysis.

83i2020072 83gggp PDR ADQCK 05000397

'~ E PDR pate/

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II

Mr. A. Schwencer Page 2

In regard to the planned change of the solenoid valves, replacement of.

the inboard (MS-V-22A, B, C, D) solenoid valves will be completed prior to fuel load.

The outboard units (MS-V-28A, B, C, D) are listed on Table B of the Justification For Interim Operation (JIO) and are scheduled for replacement at the first refueling outage.

Should you have any questions, please contact Mr. P. L. Powell, Manager, WNP-2 Licensing.

Qe G.

C. Sorensen, Manager Regulatory Programs DAA/sms cc:

R Auluck NRC WS Chin BPA A

Toth NRC Site JE Jackson -

NRC Site "