ML20105B962

Provides Results of Review of NSHC Package Re Removing Power from Valves to Avoid Single Failure Problems.Issue of Valve Position Indication Problem Not Resolved in Ser.Subj Issue Must Be Addressed in SER Before Oeld Can Concur

ML20105B962
Person / Time
Site:	05000000, Turkey Point
Issue date:	02/06/1984
From:	Gray J NRC
To:	Mcdonald D NRC
Shared Package
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References
FOIA-84-166 NUDOCS 8502090278
Download: ML20105B962 (1)

Text

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Vf N S

Note to: Dan Mcdonald From:

.J. Gray

SUBJECT:

TURKEY. POINT 3 & 4 AMENDMENTS ON' REMOVING POWER FROM VALVES 10 ELD has been asked to concur. in the issuance of Turkey Point license amendments requiring the_ removal of power from certain valves in order to avoid single failure problems.

From reviewing the attached _ package, I note'~one' problem which.does not seem to have been resolved in the SER.

Specifically, the SER. indicates that the absence of a. positive valve.

position indication in the control room itself represents a potential single-failure problem.

The SER-further indicates that control room valve' position indication will be required and that licensee is preparing a plant modification to provide for such indication. The problem is that,;from the face of the SER, it appears that we would be issuing this amendment, requiring the' removal'of power from the valves, without any mechanism for control room valve position indication in pl ace.-

(There is no. statement that the licensee's plant modifications to provide. control room valve position indication have been accomplished, even though licensee committed, in February 1983, to make the modifications).

In effect, we would be eliminating one single failure problem by. introducing another single failure problem.

It seems to me (that the valve position indication problem should be addressed in the SER.'. If licensee's control room indicators are installed and operable,

.that should be stated..If they are not installed and operable, then the SER must: address why it is safe to remove power from the valves in question without having any valve position indication in the control room.

In its present state, the SER raises the problem of lack of-valve position indication but leaves it unresolved.

As such, the ultimate finding that;there is reasonable assurance of safety with the proposed amendment is not: adequately supported.

Becau'se of the valve position indication problem, I am not prepared to concur in the issuance of this amendment now.

],

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[7 ADATD84-166 PDR

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