ML20140E713

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Requests Licensee Provide Documentation to Demonstrate That Isolation Valves Listed in Encl Will Operate Over Entire Range of Svc Conditions.Response Requested within 60 Days of Receipt of Request
ML20140E713
Person / Time
Site: 05000000, Shoreham
Issue date: 04/22/1985
From: Bosnak R
Office of Nuclear Reactor Regulation
To: Novak T
Office of Nuclear Reactor Regulation
Shared Package
ML20140B832 List:
References
FOIA-85-772 NUDOCS 8505010190
Download: ML20140E713 (2)
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m a a em MEMORANDUM FOR: Thomas M. Novak Assistant Director for Licensing Division of Licensing FROM: Robert J. Bosnak, Acting Assistant Director Components & Structures Engineering Division of Engineering

SUBJECT:

UNIS0 LATED LOCA OUTSIDE DRYWELL IN SHOREHAM The staff is currently perfoming a scoping study on unisolated LOCA's outside of the drywell in the Shoreham reactor building to identify high-energy line breaks (HELB) that are important with respect to isolation requirements. The study identifies isolation valves in the HPCI, RCIC, RWCU, and MSL lines (see enclosure 1).

The preliminary results of the analysis indicate that the estimate of core suming the damagefrequencyforanunisolatedLOCAoutsidethedrywell,ag/

isolation valves failed to close upon demand, is about 2 X 10 reactor-year.

If the solation valves were assumed to close the estimate would be about 4X10"j/ reactor-year. Therefore, the analysis indicates that a problem may exist should the valves fail to close.

To date no test results or analysis have been provided to show that the isolation valves will close under blowdown conditions. For the staff to complete its review of this issue it will be necessary to obtain additional infomation from the licensee to support the operability of the valves listed in enclosure 1. The licensee should provide documentation to demonstrate that these valves, which perform a safety function, will operate over the entire range of service conditions. For a pipe break downstream of the valve, it must be demonstrated that the capability exists to isolate the break. The information should be provided within 60 days of receipt of the request.

R ber . Bosnak, Acting Assistant Director Components & Structures Engineering Division of Engineering l

cc: A. Schw er T. Spels '

1 J. P. Knight

. agchi S. Israel E. Chow

Contact:

J. Lombardo l Ext. 28194 35b9/stio ~

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Enclosure 1 SHOREHAM ISOLATION VALVES FOR HELB (A) HPCI line IE41*M0V-041 (1))

(ii IE41*MOV-042 (B) RCIC line IE51-M0V-041 (f))

(ii IE51-MOV-042 (C) RWCU line 1) MOV-033(F001)

11) MOV-034 (F004) 111)MOV-F100 i) MOV-F106 V MOV-F102 (D) MSL drain line 1))1821-MOV-031 11 1821-MOV-032 O e 4

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MAY 6 15o3 Docket No. 50-322 Mr. John D. Leonard, Jr.

Vice President - Nuclear Operations Long Island Lighting Company Shoreham Nuclear Power Station P.O. Box 618 North Country Road Wading River, New York 11792

Dear Mr. Leonard:

SUBJECT:

UNISOLATED LOCA OUTSIDE ORYWELL - SHOREHAM NUCLEAR POWER STATION The NRC staff is currently performing a scoping study of unisolated LOCAs outside of the drywell for the Shoreham reactor building to identify high-energy line breaks (HELB) thtt are important with respect to isolation requirements. The study has identified several isolation valves in the HPCI, RCIC, RWCU, and MS lines of concern (see Enclosure 1).

The preliminary results of the analysis indicate that the estimate of core suming the damage isolation frequency fortoan valves failed unisolated close LOCA outside upon demand, is aboutthe2 Xdrywell, 10 ag/ reactor-year.

If the 4X10~fsolationvalveswereassumedtoclosetheestimatewouldbeabout

/ reactor-year. Therefore, the analysis indicates that a problem may exist should the valves fail to close.

To date we know of no test results or analysis that have been provided by you to show that the isolation valves will close under blowdown conditions. For the staff to complete its review of this issue it will be necessary to obtain this information. We therefore request that you provide documentation to demonstrate that the valves listed in Enclosure l', which perform a safety function, will operate over the entire range of service conditions. For a pipe break downstream of the valve, it must be demonstrated that the capability exists to isolate the break. We request that you provide this infonnation within 60 days of your receipt of the letter.

Sincerely, Or-' g f =1 * ' mi by:

A. Schwencer, Chief Licensing Branch No. 2 Olvision of Licensing

Enclosure:

As stated -

cc: See next page Yf / W .

Distribution: Docket File NRC POR Local PDR PRC System NSIC LB#2 Reading EHylton RCaruso Bordenick,0 ELD ACRS (16) JPartlow BGrimes EJordan G8agchi EChow TSpeis JPKnight SIsrael JL ardo LBed LLPM rw

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j WASHING TON, D. C. 20555 a., a 9***.*e MAY 6 1985 Docket No. 50-322 Mr. John D. Leonard, Jr.

Vice President - Nuclear Operations Long Island Lighting Company Shoreham Nuclear Power Station P.O. Box 618, North Country Road Wading River, New York 11792

Dear Mr. Leonard:

SUBJECT:

UNISOLATED LOCA OUTSIDE DRYWELL - SHOREHAM NUCLEAR POWER STATION The NRC staff is currently perfoming a scoping study of unisolated LOCAs outside of the drywell for the Shoreham reactor building to identify high-energy line breaks (HELB) that are important with respect to isolation requirements. The study has identified several isolation valves in the HPCI, RCIC, RWCU, and MS lines of concern (see Enclosure 1).

The preliminary results of the analysis indicate that the estimate of core suming the damage isolation valves frequency fortoan failed unisolated close LOCA outside upon demand, is about the 2 X drywell, 10 ag/ reactor-year.

If the 4X10~fsolationvalveswereassumedtoclosetheestimatewouldbeabout

/ reactor-year. Therefore, the analysis indicates that a problem may exist should the valves fail to close.

To date we know of no test results or analysis that have been provided by you to show that the isolation valves will close under blowdown conditions. For the staff to complete its review of this issue it will be necessary to obtain this information. We therefore request that you provide documentation to demonstrate that the valves listed in Enclosure 1, which perfom a safety function, will operate over the entire range of service conditions. For a pipe break downstream of the valve, it must be demonstrated that the capability exists to isolate the break. We request that you provide this information within 60 days of your receipt of the letter.

Sincerely, ,

Ylhtt?UDl ,,

A. Schwencer, Chief

' Licensing Branch No. 2 Division of Licensing

Enclosure:

As stated cc: See next page .

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SHOREHAM (5)

Alan S. Rosenthal, Esc. Chairman

  • Stephen B. Latham, Esq.

Atomic Safety & Licensing Appeal Board John F. Shea, III Esq.

U. S. Nuclear Regulatory Commission Twomey, Latham & Shea Washington, DC 20555 Attorneys at Law P. O. Box 398 33 West Second Street Howard L. Blau, Esq. Riverhead, New York 11901 217 Newbridge Road Hicksville, New Yord Atomic Safety & Licensing Board Panel

  • W. Taylor Revley, III U. S. ' Nuclear Regulatory Commission

, Hunton & Williams Washington, OC 20555 707 East Main Street P. O. Box 1535 Howard A. Wilber*

Richmond, Virginia 23212 Atomic Safety & Licensing Board

, U. S. Nuclear Regulatory Commission Atomic Safety & Licensing Appeal ~ Washington, DC 20555 Board Panel

  • U. S. Nuclear Regulatory Commission Resident Inspector Washington, DC. 20555 Shoreham NPS, U. S. NRC Post Office Box B Gary J. Edles, Esq.* Rockey Point, New York Atomic Safety & Licensing .

Appeal Board Ken Robinson, Esq.

U. S. Nuclear Regulatory Commission New York State Department Washington, DC 20555 2 World Trade Center Gerald C. Crotty, Esq.

Ben Wiles,*Esq. Ezra I. Bialik, Esq.

Counsel to the Governor Assistant Attorney General -

Executive Chamber Environmental Protection Bureau State Capitol New York State Department of Law 2 World Trade Center Herbert H. Brown, Esq. New York, New York 10004

, L.awrence Coe Lanpher, Esq.

Karla J. Letsche, Esq. Martin Bradley A: hare. Esq.

Kirkpatrick, Lockhart, Hill, Suffolk County-Attorney Christopher & Phillips H. Lee Dennison Building 1900 M Street, NW - 8th Floor Veteran's Memorial Highway l Washington, DC 20036 Hauppauhe, New York 11788 1

Leon Friedman, Esq.' Chris Nolin Costigan, Hyman & Hyman New York State Assembly 120 Mineola Boulevard Energy Committee '

Mineola, New York 11501 626 Legislative Office Building Albany, New York 12248 I ,

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  • SHOREHAM (5) James B. Dougherty, Esq. Mr. William Steiger 3045 Porter Street, NW Acting Plant Manager Washington, DC 20008 Shoreham Nuclear Power Station P. 9. Box 628

- Wac'Ing River, New York 11792

  • Fabian G. Palomino, Esq.

Special Counsel to the Governor .

Executive Chamber - State Capitol MH8 Technical Associates Albany, New York 12224 1723 Hamilton Avenue - Suite K 4

San Jose, California 95125 Edward M. Barrett, Esq.

General Counsel Hon. Peter Cohalan 3

Long Island Lighting Company Suffolk County Executive 250 Old County Road County Executive / Legislative Bldg.

Mineola, New York 11501 Veteran's Memorial Highway Hauppauge, New York 11788 Mr. Brian McCaffrey Long Island Lighting Company Mr. Jay Dunkleberger .

Shoreham Nuclear Power Station New York State Energy Office P. O. Box 618 Agency Building 2 North Country Road Empire State Plaza Wading River, New York 11792 Albany, New York 12223 Marc W. Goldsmith I's. Nora Bredes Energy Research Group, Inc. Siareham Opponents Coalition 400-1 Totten Pond Road 19F East Main Street Waltham, Massachusetts .02154 - Saithtown, New York 11787 4

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i Enclosure 1 l SHOREHAM ISOLATION VALVES FOR HELB (A) HPCI line 1) IE41*MOV-041 ,

11) IE41*MOV-042 (B) RCIC line (i) IE51-MOV-041

, (ii) IE51-MOV-042 (C) Rh'CU line (i) MOV-033 (F001)

(ii) MOV-034 (F004)

(iii)MOV-F100 (iv) MOV-F106 (V) MOV-F102 (0) MSL drain line (1) IB21-MOV-031 (ii) IB21-MOV-032 d

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