ML20004F006

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Responds to IE Bulletin 81-02, Failure of Gate Type Valves to Close Against Differential Pressure. Five Spare Borg-Warner Nuclear Valve Div Parts 74380 Will Be Modified by Manufacturer
ML20004F006
Person / Time
Site: Mcguire, McGuire  Duke Energy icon.png
Issue date: 05/22/1981
From: Parker W
DUKE POWER CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
IEB-81-02, IEB-81-2, NUDOCS 8106160374
Download: ML20004F006 (2)


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l' wlLLI AM Q. PAR K E R. J R. itLEpescast: Anta 704 ViCP PogsaQtest sec - Pao 0vetio- May 22, 1981 273-4o.2 Mr. James P. O'Reilly, Director pQ

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McGuire Nuclear Station /

D.ocket Nos. 50-369 and 50-370 A'jsy

Dear Mr. O'Reilly:

In response to your April 9,1981 letter which transmitted IE Bulletin 81-02, we wish to advise that a review of the gate type motor-operated valves at McGuire has been conducted.

The pressurizer block valves for Unit 1 (INC31, INC33, and 1NC35) and Unit 2 (2NC31, 2NC33, and 2NC35) are Borg-Wa'rner Nuclear Valve Division (BW-NVD) Part Number 74380-1; however, these valves have been modified and satisfactorily re-tested at full flow conditions (Re Significant Deficiency Report SD-369, 370/79-14) .

Additionally, five spare BW-NVD Part Number 74380 originally intended for use as Catawba blocks valves are being transferred to McGuire. These valves will be sent back to Borg-Warner for modification and will be placed in McGuire's spare stock on their return.

l This response encompassed approximately 16 man-hours in revi v and preparation.

.V y truly your ,

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- - u j William C. Parker, RWO:pw l cc: Director Ms. M. J. Graham NRC Office of Inspection and Enforcement Resident Inspector - NRC l Washington, D.C. 20555 McGuire Nuclear Station TG //

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4 Mr. James P. O'Reilly, Director May 22, 1981 Page 2 WILLIAM 0. PARKER, JR., being duly sworn, states that he is Vice President of Duke Power Company, that he is authorized on the part of said Company to sign and file with the Nuclear Regulatory Commission this response to IE Bulletin 81-02 and that all statements and matters set forth therein are true and correct to the best of his knowledge.

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um b. f William O. Parker, Jr. @ e President Subscribed and sworn to before me this 22th day of May,1981 Yiu [ $bw Sue C. Sherrill, Notary Public

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Notarial Seal My Commission Expires:

September 20, 1984

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