ML17261B306

Forwards Clarifications to safety-related motor-operated Valve Program,Per Util 870610 Response to IE Bulletin 85-003.Clarifications Should Be Considered Appurtenance to 870610 Submittal

ML17261B306
Person / Time
Site:	Callaway
Issue date:	08/18/1987
From:	Schnell D UNION ELECTRIC CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
IEB-85-003, IEB-85-3, ULNRC-1577, NUDOCS 8708240432
Download: ML17261B306 (8)

Text

UMON SI.zclaIc 1901 Gratiot Street. St. Louis Oonaid F. Schnell August 18r 1 987 Vic President U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gen tle men: ULNRC- 1 57 7 DOCKET %EMBER 50-483 CALLANT PLANT

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SAFETY-RELA ED MOTOR-OPERATED VALVE P ROGRAi4f Refe ences: 1) ULNRC-1387 dated October 17, 1986

2) C. E. Horelius letter to D. P. Schnell dated February 19, 1987

3) ULLlRC-1456 dated Narch 5, 1987

4) C. E. Zorelius letter to D. P. Schnell dated Hay 7,: 1987

5) ULNRC-1523 dated June 10, 1987 Reference 5 transmitted the Union Electric response to I & E Bulle"in 85-03 which documented the HOVATS safety-related motor-operated valve (AOV) program. The attachment to this letter provides clarifications to this program and should be considered an appurtenance to the June 10, 1987 submittal.

l you have any questions, please contact us.

Very truly yours, Donald P. Schnell WEK/lad Attachment

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ATTACHED

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TO ULNRC-157 7 CALLAÃAY PLAi4T SAFETY-RZLAT"D MOTOR-OPERATED VALVE PROGRAM

.he following clarifications pertain to the Union Electric safety-related motor-operateD valve orogram (ULNRC-1523 dat d June 10, 1987) anc should be considered Clarification 1 when reviewing same.

Enclosure 2, At"achment B, Sections II-A a~d II-E discuss the validation o the NOVATS valve equations which are used to develop switch settings. This validation process is considered accurate if pressure test data is provided by four valves of the same type and size or twenty valves of the same type. The definition of "type" as used in tnis submittal includes but is not limited to valve

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Clarification 2 Enclosure 2, Attachment B, Section IZ;C discusses the correct switch setting for the close-to-open tor'ue bypass limit switch. This switch setting will be based on the percent of total valve stroke as measured from the goin" of disk motion (not stem motion, as previously submitted).

Clarification 3 Enclosur'e 2, Attachment B, Table 2 is a 1'sting of MOVES Differential Pressure Test Data. An error exists in that the heading titled "Orifice Area" should be titled "Orifice Dianeter".

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CC Gerald Charnof Shaw, Pittman, f,Potts Esa.

& Trowbridge 2300 N. Street, N.N.

Ãashing ton, D.C. 20037 Dr. J. O. Cermak Cr A< inc.

4 Professional Drive (Suite 110)

Gai the r sburg, MD 20879 H. L. Porney Chief, Reactor Project Branch 1 U.S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Bruce Li'ttle Callaway Resident Office U. S. Nuclear Regula tory Commi ss ion RR>l Steedman, Missouri 65077 Tom Alexion (2)

Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop 316 7920 Norfolk Avenue Bethesda, K7 20014 Manager, Electric Department Missouri Public Service Commission P O. Box 360 Jefferson City,.MO 65102

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N. P..Goel (Bechtel)

G56.37 (CA-460)

Compliance (J. E. Davis)

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Pile Witt 3456-00 "1.5.1 (85-03)

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