ML20071G948
| ML20071G948 | |
| Person / Time | |
|---|---|
| Site: | Shoreham File:Long Island Lighting Company icon.png |
| Issue date: | 05/20/1983 |
| From: | James Smith LONG ISLAND LIGHTING CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.K.3.16, TASK-TM SNRC-893, NUDOCS 8305240447 | |
| Download: ML20071G948 (3) | |
Text
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LONG ISLAND LIGHTING COMPANY f
SHOREHAM NUCLEAR POWER STATION P.O. BOX 618, NORTH COUNTRY ROAD
- WADING RIVER N.Y.11792 Direct Dial Number May 20, 1983 SNRC-893 Mr. Harold R.
Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D. C.
20555 Shoreham Nuclear Power Station - Unit 1 Docket No. 50-322
Reference:
(1)
NRC letter (A. Schwencer) to LILCO (M.
S.
Pollock) entitled, " Evaluation of BWR Owner's Group Generic Response to II.K.3.16 of NUREG-0737, Reduction of Challenges and Failures of Relief Valves-Feasibility Study and System Modification" dated April 18, 1983
Dear Mr. Denton:
LILCO has reviewed the staff:s safety evaluation of the BWR Owner's Group response to item II.K.3.16 of NUREG-0737 (Reference 1).
The SER recommended four modifications to further reduce the challenges to the SRVs.
The following represents the status of the implementa-tion of the SER recommendations at Shoreham:
(1)
Low-Low Set Relief Logic or Equivalent Manual Actions As stated in SNRC-563 (5/15/81) LILCO committed to implement emergency procedures and operator training to provide the low-low set
" equivalent manual action".
In fulfillment of that commitment the Shoreham specific Emergency Procedures were transmitted via SNRC-770, dated September 16, 1983.
(2)
Lower the Reactor Pressure Vessel Water Level Isolation Setpoint for Main Steam Isolation Valve (MSIV) Closure from Level 2 to Level 1.
As discussed in SNRC-816 (1/7/83) LILCO will incorporate this modification during the first refueling outage.
9305240447 830520 t
PDR ADOCK 05000322 Ml A
PDR F'
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FC-89 35.3
m May 20, 1983 SNRC-893 Page 2 (3)
Increase the Simmer Margin The General Electric Co. Service Information Letter No. 196, supplement 3 was issued in 1977 to promote the optimization of the simmer margin at operating plants, where differential pressures of less than 80 psi were common.
As a later generation BNR, the design of the Shoreham SRVs, in conjunction with overpressure protection considerations provides an average simmer margin of 124 psi.
(4)
P?.eventive Maintenance Program 4 preventive maintenance program based on the SER maintenance recommendations, as well as information available in I&E Bulletins, Information Notices and GE SILs is being developed to enhance the operability of the SRVs in the self actuation mode.,The Shoreham program is expected to be available for on site review in approximately 2 months.
In addition, as stated in SNRC 586 (6/11/81), LILCO will participate in the Safety / Relief Valve Surveillance (SRVS)
Data Base Program.
The purpose of this program is to collect engineering, actuation, leakage, failure and maintenance data in sufficient detail to allow the identification of generic safety relief valve problems.
LILCO believes that the information stated herein should enable the NRC to confirm that the necessary commitments have been made regarding the implementation of the recommended modifications to reduce SRV challenges and failures.
Should any additional information be required please contact the undersigned.
Very truly yours,
\\
v J.
L.
Smith Manager, Special Projects Shoreham Nuclear Power Station RT:bc cc:
J. Higgins All Parties Listed in Attachment 1
L..._m
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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 Christopher & Phillips 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 l
Matthew J.
Kelly, Esq.
j State of New York l
James Dougherty Department of Public Service 1
3045 Porter Street Three Empire State Plaza Washington, D.C.
20008 Albany, New York 12223 i
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