ML15223A533

Ack Receipt of .Ltr Did Not Provide Required Responses.Response Should Demonstrate That Seal Ring Cannot Become Destructive Missile.Info Requested within 30 Days of Ltr Receipt

ML15223A533
Person / Time
Site:	Oconee
Issue date:	10/11/1979
From:	Reid R Office of Nuclear Reactor Regulation
To:	Parker W DUKE POWER CO.
References
TAC-11846, NUDOCS 7910230371
Download: ML15223A533 (3)

Text

Distribution:

Vocket files (3).

NRC PDR (3)

L PDR NRR Rdg CTOBER 1

ORB#4 Rdg.

L. Shao W. Gammill Dockets Nos. 50-269L/

J. R. Miller 50-270, D. Eisenhut and 50-287 B. Grimes R. Vollmer T. J. Carter ACRS (16)

Mr. William 0. Parker Jr.

W. Russell Vice President - Steam Production

'Attorney, Oeld ra Duke Power Company OI&E (3)

P. 0. Box 2178 R. Reid 422 South Church Street M. Fairtile cr:

r II

-Charlotte, North Carolina 28242 R. Ingram EB

Dear Mr. Paeker:

J. R. Buchanan V 10 TERA Your letter of September 21, 1979, in response to our 10 CFR.50.54(f) letter of July 18, 1979, did not provide the required responses to our concerns about the potential for the reactor cavity annulus seal ring to become a destructive missile in the'event of a loss-of-coolant accident pipe break inside the reactor cavity.

In your response you should submit the analyses, in sufficient detail, to deAonstrate that the seal ring cannot become a destructive missile not only in)regqard to the containment but to othe r components, systems or structuires needed for the protection'of the health and safety of the public fn the event of the aforementioned LOCA.

Kindly provide the nmformation within 30 days-of receipt of this letter with three signed originals and 37 additional copies.

Sincerely,.

Original signed by Robert W. Reid Robert W. Reid, Chief Operating Reactors Branch #4 Division of Operating Reactors 6c: See next page me an <9-0RmanE oB 0A R.R.

D.GVERNMNT P OPPICE 9.

27....L

___..............1../

7 NBC pOW( 310 (9-76) Na1cl 0240 U.S. GOVERNMENT PRINTING OFFICE: 1978 - 205 -7C9

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 October 11, 1979 Docket' Nos.

50-269k/

50-270, and 50-287 Mr. William 0. Parker, Jr.

Vice President - Steam Production Duke Power Company P. 0. Box 2178 422 South Church Street Charlotte, North Carolina 28242

Dear Mr. Parker:

Your letter of September 21, 1979, in response to our 10 CFR 50.54(f) letter of July 18, 1979, did not provide the required responses to our concerns about the potential for the reactor cavity annulus seal ring to become a destructive missile in the event of a loss-of-coolant accident pipe break inside the reactor cavity.

In your response you should submit the analyses, in sufficient detail, to demonstrate that the seal ring cannot become a destructive missile not only in regard to the containment but to other components, systems or structures needed for the protection of the health and safety of the public in the event of the aforementioned LOCA.

Kindly provide the information within 30 days of receipt of this letter with three signed originals and 37 additional copies.

Sincerely, Robert W. Reid, Chief Operating Reactors Branch #4 Division of Operating Reactors cc:

See next page

Duke Power Company cc:

Mr. William L. Porter Duke Power Comoany Post Office Box 2178 422 South Church Street Charlotte, North Carolina 28242 J. Michael McGarry, 111, Esquire DeBevoise & Liberman 700 Shoreham Building 806 15th Street, N.W.

Washington, D. C.

20005 U. S. Nuclear Regulatory Commission Regi.on II Office of Inspection and Enforcement ATTN:

Mr. Francis Jape P. 0. Box 85 Seneca, South. Carolina 29678 Mr. Robert B. Borsum Babcock & Wilcox Nuclear Power Generation Division Suite 420, 7735 Old Georgetown Road Bethesda, Maryland 20014 Manager, LIS NUS Corporation 2536 Countryside Boulevard Clearwater, Florida 33515 Oconee Public Library 201 South Spring Street Walhalla, 5outh Carolina 29691