ML20059N493
| ML20059N493 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 10/01/1990 |
| From: | Kintnre L Office of Nuclear Reactor Regulation |
| To: | Cottle W MISSISSIPPI POWER & LIGHT CO. |
| Shared Package | |
| ML20059N494 | List: |
| References | |
| GL-88-01, GL-88-1, NUDOCS 9010160114 | |
| Download: ML20059N493 (6) | |
Text
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- October 1, 1990 I
alternative, when the drywell sump monitoring system is inoperable, the operator Inay use a demonstrated manual method for determining j
leak rate, such as measuring the time to manually pump the sump at a i
fixed interval (4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />). The staff considers manual measurement a viable sump monitoring method without. hardship to the operator; i
therefore, this method could be added to the Action statement. With i
1 the manual method operable, the outage time for the drywell sump monitoring system could be extended to 30 days. However, if the sump pump and drywell sump monitoring systems are inoperable concurrently, then one of the systems has to be repaired within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or an orderly shutdown should be initiated.
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I provides pertinent sections of-the model BWR Technical l
Specificationsasexamplesofacceptablepositionsforitems(2)and(3)above.
4 You are requested.to submit the requisite TS change requests within 90 days of the date of this letter.
I Since you previously submitted integrated IGSCC inspection plans, our safety evaluation precludes the necessity for you to submit IGSCC inspection plans for each future outage. However, if flaws are found that do not meet the criteria of Section XI of the ASME Code for continued operation without evaluation, NRC approval of flaw evaluations or repairs in accordance with IWB
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3640-and IWB 4130 is required before resumption of operation. Note that weld overlay repair is considered a non. code repair, which requires NRC approval.
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This request is covered by Office of Management and Budget Clearance Number 3150-0011 which expires January 31, 1991.. Comments on burden and duplication may be directed to the Information and Records Management Branch (MNBB.7714),
i Division of Information Support Services, Office of Resources Management, U.S.
Nuclear Regulatory (Conunission, Washington, D.C.
20555; and to the Paperwork u
(
Reduction Project 3150-011), Office of Management and Budget, Washington, D.C.
20503.
Sincerely, Original signed by Lester L. Kintner, Senior Project Manager Project Directorate IV.1 q4, Division of Reactor Projects. 111 VLJ IV, Y and Special Projects 9010160114 901001 Office of Nuclear Reactor Regulation l
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Enclosures:
DISTRIBUTION l
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. W tICIAL RECORD COPT Docipment Name: 66M5 GL 88 01 TAC 40. 69137
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[f m/[,g NUCLEAR REGULATORY COMMISSION 4
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October 1, 1990 l
Docket No. 50-416 Mr. William T. Cottle Vice President, Operations GGNS Entergy Operations, Inc.
Post Office Box 756 Port Gibson, Mississippi 39150 4
Dear Mr. Cottle:
SUBJECT:
GRAND GULF NUCLEAR STATION, UNIT 1 - (GGNS UNIT 1) - GENERIC LETTER 88-01(TACNO.69137)
By letter dated August 8, 1988, July 14, 1989, and April 23, 1990, the licensee (System Energy Resources, Inc. before June 6,1990, and Entergy Operations Inc. on or a' ter June 6,1990), submitted its response to Generic Letter (GL) 88-01, "NRC Position on IGSCC in BWR Austenitic Stainless Steel Piping." The NRC staff has comp (leted its review of these submittals.SE) and a copy of the Te A copy of the staff's Safety Evaluation by the staff's contractor, Viking Systems International, are provided in.
Based on the Safety Evaluation, the staff finds your responses to GL 88-01 acceptable, with the exception of your responses regarding changes to the Technical Specifications (TS). When the Committee to Review Generic Requirements (CRGR) met on this topic, they approved the TS to be incorporated by licensees. Thus, you are requested to propose amendments to your TS to:
(1) Include a statement in the surveillance or administrative controls section that includes the following:
"The inservice inspection program for piping identified in NRC Generic Letter 88-01 shall be performed in accordance with the NRC staff positions on schedule, methods, personnel, and sample expansion included in Generic Letter 88-01 or in accordance with alternate measures approved by the NRC staff."
(2) Change TS 3.4.3.2.e to specify that reactor coolant system leakage shall be limited to a 2 gpm increase in unidentified leakage within any 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period.
(3) Change the surveillance requirement in TS 4.4.3.2.1.b to'specify that primary containment sump flow rate shall be monitored at least once per eight(8) hours.
(4) Change TS 3.4.3.1 to specify that the following actions shall be taken when the sump pump or the sump level and flow monitoring systems are determined to be inoperable. Since your plant has IGSCC weld category D weldments, the Action statement should provide an allowed outage time of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> for repairing the drywell floor and equipment drain sump monitoring system, or an orderly shutdown should be initiated. As an i
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4 e alternative, when the dryv.c11 suit e,onttoring system is inoperable, the operstcr sy.use a denionstrated manual method for determining leak rate, such as seasuring the time to manually pump the sump at a fixedinterval(4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />). The staff considers manual seasurement a viable surp monitoring method without hardship to the operator; therefore, tl.15 netthod could be added to the Action statement. With the mar.ual method operable, the outage time for the drywell sump monitoring system could be extended to 30 days. However, if the sump pump and drywell sump monitoring systers are inoperable concurrently, then one of the systems has to be repaired within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or an orderly shutdown should be initiated.
I provides pertinent-sections of the model BWR Technical Specificationsasexamplesofacceptablepositionsforitems(2)and(3)above.
1 You are requested to submit the requisite TS change requests within 90 days of the date of this letter.
Since you previously submitted integrated IGSCC inspection plans, our safety evaluation precludes the necessity for you to submit IGSCC inspection plans e
for.each future outage. - However, if flaws are f ound that do not meet the criteria of Section XI of the ASME Code for continued operation without evaluation, tTC aprroW cf 11n evaluations or repairs in accordance with IWB 3640 and IWB 4130 is recuired before resumption of operation. Note that weld-overlay repair is consicered a non-Code repair, which requires NRC approval.
This recue!,t is covered by Office of Manageraent and Budget Clearance' Number 3150-0011 which expires January 31, 1 % 1.
Comments on burden and duplication may be directed to the Information and Records Managtment Branch-(MNBB-7714),
Divisior, of Inioituticu Support Services, Office of Resources Ikht.pement, U.S.
Nuclear Regulatory (Commission, Washington, D.C.0150-C11),OfficeofManag 20555;;and to the Paperwork.
Reduction Project 20503.
Sincerely, l
Lester L. Kintner, Senior Project Manager Project Dit ectorate IV-1 Division of Reactor Projects - 111 I
l IV, Y and Special Projects Office of Nuclear Reactor Regulation
Enclosures:
As stated cc w/ enclosures:
See next page
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c Mr. W. T. Cottle Entergy Operations, Inc.
Grand Gulf Nuclear Station CC:
Mr. Ted H. Cloninger Mr. C. R. Hutchinson j
Vice President, Engineering GGNS General Manager Entergy Operations Inc.
Entergy Operations, Inc.
P. O. Box 31995 P. O. Box 756 1
Jackson, Mississippi 39286-1995 Port Gibson, Mississippi 39150 j
Robert B. McGehee, Esquire The Honorable William J. Guste, Jr.
Wise, Carter, Child, and Attorney General Caraway Department of Justice i
P. O. Box 651 State of Louisiana Jackson, Mississippi 39205 P. O. Box 94005 Baton Rouge, Louisiana 70804-9005 Nicholas S. Reynolds Esquire Bishop, Cook, Purcell Alton B. Cobb, M.D.
and Reynolds State Health Officer i
1400 L Street, N.W. - 12th Floor State Board of Health Washington, D.C.
20005-3502 P. O. Box 1700 Jackson, Mississippi 39205 Mr. Jim T. LeGros Manager of Quality Assurance Office of the Governor Entergy Operations, Inc.
State of Mississippi P. O. Box 31995 Jackson, Mississippi 39201 Jackson, Mississippi 39286-1995 President, Mr. Jack McMillan, Director Claiborne County Board of Supervisors Division of Solid Waste Management Port Gibson, Mississippi 39150 Mississippi Department of Natural Resources Regional Ad:ainistra+or, Region 11 P. O. Box 10385 U.S. Nucleer Regubtory Comission Jackson, Mississippi 39209 101 Marietta St., Suite 2900 l
Atlanta, Georp'.a 30323 J
Mr. Michael J. Meisner I
Director, Nuclear Licensing Mike Morre, Attorney General Entergy Operations, Inc.
Frank Sp'.ncer, Asst. Attorney General P. O. Box 756 State of Mississippi Port Gibson, Mississippi 39150 Post Office Box 22947 Mr. C. B. Hogg, Project Manager Bechtel Power Corporation Mr. Gerald W. Muench P. O. Box 2166 Vice President, Operations Support Houston, Texas 77252-2166 Entergy Operations, Inc.
P. O. Box 31995 Mr. H. O. Christensen Jackson, Mississippi 39286-1995 Senior Resident Inspector U.S. Nuclear Regulatory Comission Mr. Donald C. Hintz, Executive Vice Route 2 Box 399 President & Chief Operating Officer Port Gibson, Mississippi 39150 Entergy Operations, Inc.
P. O. Box 31995 Jackson, Mississippi 39286-1995
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