ML20155G146

Forwards Relief Request VR-51 to Inservice Testing Program for Pumps & Valves,Revising Requirements for MSIV-leakage Control Sys Isolation Valves to Allow Valve Cycling During Shutdowns

ML20155G146
Person / Time
Site:	Fermi
Issue date:	04/24/1986
From:	Agosti F DETROIT EDISON CO.
To:	Adensam E Office of Nuclear Reactor Regulation
References
TAC-63529, VP-86-0046, VP-86-46, NUDOCS 8604300159
Download: ML20155G146 (2)

Text

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' ic P s nt Nuclear Operations Detroit -

r. u Edison EI?45" ta.

April 24, 1986 VP-86-0046 Director of Nuclear Reactor Regulation Ms.-Elinor G. Adensam, Director-Project Directorate No. 3 Division of BWR Licensing U. S. Nuclear Regulatory Commission Washington, D.C.

20555

Reference:

1)

Fermi 2 NRC Docket No. 50-341 NRC License No. NPF-43 2)

Detroit Edison Letter to NRC, " Inservice Testing of Pumps and Valves", EF2-65368,.

dated October 4, 1983

Subject:

Relief Request VR-51 to Inservice-Testino Program for Pumns and Valves In accordance with 10CFR50.55a(g) (5) (iii)', ' Detroit Edison is penviding the enclosed relief request ivt incorporation into Revision 2 of the Inservice. Testing Program for Pumps and Valves (Reference 2)..The..

enclosed Relief Request VR-51 provides a revision to the testing requirements for the MSIV-Leakage Control System isolation valves to allow valve cycling and timing during cold shutdowns in lieu of quarterly. testing as previously specified.

Please direct any questions to Mr. R. L. Woolley at (313) 586-4211.

Sincerely, Jt S

• With attachment cc:- Mr. M. D. Lynch *

'Mr. J. Page

• Resident NRC Inspector

• USNRC Document Control Desk Washington, D.C. 20555 g)I '

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SYSTEM:

?MSIV-Leak ~ age Control)

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_ B21-F434 -(V5--2294) :& B21-F4370-(V5--2297)

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CATEGORY:.

(Category - B).

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_ FUNCTION:-

Inboard Containment Isolation = Valve; X

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TEST REOUIREPjZHT.:

Exercise land timejvalvec_.every/th're'e=

months _to the open and closed po'sition.: ' (BT--O' & BT-C) z

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I BASIS FOR RELIEF:,The MSIV Leakage Contiroli(MSIV-LCS)

System.is.not designed.to operate _at.pressur.es.-greater; than;50.psig.

This is based ~on thelfact:that'this yJ 4

system is only. required - to operate ' inia post -LOCA,

-l environment'after the primary system has been I

depressurized (i.e., primary system: pressure <is less-than 50 psig).

Cycling.of'these valvesLduring _ normal 2 operation, with the primary-system at rated _' pressure-i introduces the potential for over-pressurizing the

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MSIV-LCS.

The alternate. testing ~ criterion delineat'edL iI below will provide functional testing'.at/ pressures

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equivalent to those for which the system :is cdesigned 'toL i

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ALTERNATE TESTING:

These valv'es will be' full' stroked, i.

exercised and timed during cold. shutdown.:

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