ML20090F150
| ML20090F150 | |
| Person / Time | |
|---|---|
| Site: | Shoreham File:Long Island Lighting Company icon.png |
| Issue date: | 06/29/1983 |
| From: | James Smith LONG ISLAND LIGHTING CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| SNRC-925, NUDOCS 8307050038 | |
| Download: ML20090F150 (4) | |
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_4 L%-ww LONG ISLAND LIGHTING COM PANY k
SHOREHAM NUCLEAR POWER STATION P.O. DOX 618 NORTH COUNTRY ROAD e WADING RIVER. N.Y.11792 Direct Dial Number June 29, 1983 SNRC-925 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Submittal of the Conceptual Design Modification to the Core Spray Injection Valve Low Pressure Permissive Shoreham Nuclear Power Station - Unit 1 Docket No. 50-322
Reference:
LILCO letter, SNRC-840 (J.
L. Smith) to the NRC (H.
R.
Denton), dated February 18, 1983
Dear Mr. Denton:
As stated in the referenced letter, the core spray system injection valve low pressure permissive will be modified prior to return to service after the first refueling out-age to address the NRC concerns regarding possible over-pressurization of portions of the system piping. In addition LILCO also committed to submit the proposed conceptual design prior to the implementation of any modifications.
The following is a description of the conceptual design:
Two new pressure switches (one per loop) will be connected t.o the piping between the primary contain-ment penetration (X-20A or B) and the core spray injection valve (lE21=MOV033A or B), as shown in the enclosed sketch (attachment 2).
These pressure switches will be connected to the existing high pressure connection of the old differential pressure (DP) switches.
The low pressure connection of the DP switch will be capped.
No major wiring changes are necessary; the leads from the old DP switch will be connected to the new pressure switch.
All relay logic will remain the same.
The proposed injection valve opening set point is 465 psig.
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If.the. inboard' check. valve (lE21*AOV081A or B) is not pro-perly' seated, the pressure switch. will. sense reactor pressure and prevent the check valve from opening until reactor pressure falls below 465 psig.
General Electric will be
_ requested to review.this design to confirm its adequacy with regard to.the FSAR Chapter.15 analyses.
LILCO believes that the implementation of.this design change will address the NRC. concerns regarding overpressurization of.the-core spray piping,~ upstream of the motor-operated injection valve and will proceed with detailed engineering based upon this conceptual design. -Should any additional information be required, please contact this office.
Very'truly yours,
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4 J. L.-Smith
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Manager, Special Projects
. Shoreham Nuclear Power Station
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J. Higgins:
All Parties. Listed in Attachment 1 e
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g ATTACHMENT 1 Lawrence Brenner, Esq.
Herbert H.', Brown, Esq.
Administrative Judge Lawrence Coe Lanpher, Esq.
Atomic Safety and Licensing Karla J. Letsche, Esq.
Board Panel Kirkpatrick, Lockhart, Hill U.S. Nuclear Regulatory Commission Christoper & Phillips
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Washington, D.C.
20555 8th Floor 1900 M Street, N.W.
Washington, D.C.
20036 Dr. Peter A. Morris Administrative Judge Atomic Safety and Licensing Mr. Marc W. Goldsmith Board Panel Energy Research Group U.S. Nuclear Regulatory Commission 4001 Totten Pond Road Washington, D.C.
20555 Waltham, Massachusetts 02154 Dr. James H. Carpenter MHB Technical Associates Administrative Judge 1723 Hamilton Avenue Atomic Safety and Licensing Suite K Board Panel
. San Jose, California 95125 U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Stephen B. Latham, Esq.
Twomey, Latham & Shea Daniel F. Brown, Esq.
33 West Second Street Attorney P.O. Box 398 Atomic Safety and Licensing Riverhead, New York 11901 Board Panel U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Ralph Shapiro, Esq.
Cammer and Shapiro, P.C.
9 East 40th Street Bernard M. Bordenick, Esq.
New York, New York 10016 David A. Repka, Esq.
U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Matthew J. Kelly, Esq.
State of New York Department of Public Service James Dougherty Three Empire State Plaza 3045 Porter Street Albany, New York 12223
-Washington, D.C.
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ATTACHMEUT 2
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' PROPOSED MOOlFICATION TO THE CORE SPRAY IUJECTIQU VALVE LOW PRESSURE IUTERLOCK
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PRIMARV COUTAlHMENT
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CONTAIUMENT w
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PROPOSEO i-lE2i +MOV081A PRESSURE
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SWITCH
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O VESSEL IE21*.MOVO39A
/E21 s ADV081 A
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FROM SUPPRESSIMI POOL CORE -SPRAY PUMP A/GTE : 'A LOOP SHOWM B LOOP SIMILAR e-
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