ML20099H752

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Discusses Results of Investigation Into Gagging Safety Relief Valve of Lowest Setting in Order to Perform Class 1 Hydrostatic Testing,Per Table IWB-5220-1 of Section XI of ASME Code.Safety Relief Valves Can Be Gagged
ML20099H752
Person / Time
Site: Peach Bottom  Constellation icon.png
Issue date: 03/13/1985
From: Cooney M
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To: Stolz J
Office of Nuclear Reactor Regulation
References
NUDOCS 8503190480
Download: ML20099H752 (2)


Text

  • O PHILADELPHIA ELECTRIC COMPANY 23O1 M ARKET STREET P.O. BOX 8699 PHILADELPHI A. PA.19101 (zi s) a415020 "f$.."l" NUCLE AR PRODUC Yeope E LEC T W9C PRODUCT 9CN DEP ARTME NT March 13, 1985 Docket Nos. 50-277 50-278 Mr. John F.

Stolz, Chief.

Operating Reactors Branch #4 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C.

20555

SUBJECT:

Peach Bottom Atomic Power Station - Units 2 and 3 Second 120-Month Inservice Inspection (ISI)

Program

REFERENCE:

Letter, S.

L.

Daltroff, PECo, to J. F. Stolz, USNRC, dated Jannary 31, 1985

Dear Mr. Stolz:

This letter forwards the results of our investigation into gagging the safety relief valve of lowest setting in order to perform Class 1 hydrostatic testing required by Table IUB-5220-1 of the 1980 Edition through Winter 1981 addenda of Section XI of the ASME Code.

The manufacturer of the safety relief valves, Target Rock Corporation, has advised Philadelphia Electric Company that the safety relief valves can, using a special tool, be gagged safely for any hydrostatic pressure up to the valve inlet hydrostatic test pressure of 2,375 psig.

Therefore, the safety relief valves can be gagged to

_ perform the Class 1 hydrostatic test at the test pressure required to Table IWB-5220-1 of the Code.

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a 1

Mr. John F.

Stolz March 13, 1985 Page 2 Should you require any further information, please do not hesitate to contact us.

Very truly yours,

/

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j

/

cc:

T.

P.

Johnson, Resident Site Inspector