ML20247G677
| ML20247G677 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 07/21/1989 |
| From: | Kintner L Office of Nuclear Reactor Regulation |
| To: | Cottle W SYSTEM ENERGY RESOURCES, INC. |
| Shared Package | |
| ML20247G685 | List: |
| References | |
| RTR-REGGD-01.097, RTR-REGGD-1.097 TAC-72009, NUDOCS 8907280152 | |
| Download: ML20247G677 (3) | |
Text
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Docket No.
50-416 DISTRIBUTION See next page Mr. W. T. Cottle Vice President, Nuclear Operations System Lnergy Resources, Inc.
P. O. Box 23054 Jackson, Mississippi 39205
Dear Mr. Cottle:
SUBJECT:
GRAND GULF NUCLEAR STATION, UNIT 1 - POST ACCIDENT NEUTRON FLUX MONITOR (TACNO.72009)
By letter dated February 6,1989, System Energy Resources, Inc. (the licensee) submitted a change in its commitment to install post-accident neutron flux monitoring instrumentation in Grand Gulf Nuclear Station, Unit 1.
The change in connitment is to install an ex-core system instead of an in-core system.
The NRC staff has reviewed the February 6,1989 submittal.
The staff's Safety Evaluation is enclosed.
The staff concludes that the licensee's commitment to install ex-core neutron flux monitoring instrumentation meeting the requirements of Regulatory Guide 1.97, Revision 2, prior to restart following the fourth refueling outage is acceptable.
The licensee's February 6,1989, submittal states that for a test configuration of ex-core detectors installed on the outside of the thermal shield, the lowest obtainable power did not meet the low end of the power range recommended in Regulatory Guide 1.97.
The design of the ex-core instrumentation should consider other locations where the power range recommended in Regulatory Guide 1.97 can be met. The quarterly progress reports on the design and installation of this instrumentation should be continued, including efforts to improve the low end of the power range.
The reporting and/or recordkeeping requirements of this letter affect fewer than 10 respondents; therefore, OMB clearance is not required under P. L.96-511.
Sincerely, Lester L. Kintner, Senior Project Manager Project Directorate II-1 Division of Reactor Projects -I/II Office of Nuclear Reactor Regulation
Enclosure:
As stated cc w/ encl:
See next page
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July 21, 1989 tDocket No. 50-416 Mr. W. T. Cottle Vice President, Nuclear Operations System Energy. Resources, Inc.
P. O. Box 23054
-Jackson, Mississippi 39205
Dear Mr. Ccttle:
SUBJECT:
GRAND GULF NUCLEAR STATION, UNIT 1 - POST ACCIDENT NEUTRON FLUX MONITOR (TAC NO. 72009)
By letter dated. February 6,1989, System Energy Resources, Inc.' (the licensee) submitted a change in its commitment to install post-accident neutron flux monitoring. instrumentation in Grand Gulf Nuclear Station, Unit 1.
The change in commitment is to install an ex-core system instead of an in-core system.
The NRC staff has reviewed the February 6,1989 submittal.
The staff's Safety Evaluation is enclosed. The staff concludes that.the licensee's comitment to install ex-core neutron flux monitoring instrumentation meeting the requirements of Regulatory Guide 1.97, Revision 2, prior to restart following the fourth. refueling outage is acceptable.
The licensee's February 6,1989, submittal states that for a test configuration of ex-core detectors installed on the outside of the thermal shield, the lowest obcainable power did not meet the low end of the power range recommended in Regulatory Guide 1.97. The design of the ex-core instrumentation should c' nsider other locations where the power range recommended in Regulatory Guide o
1.97 can be met. The quarterly progress reports on the design and installation of this instrumentation should be continued, including efforts to improve the low end of the power range.
The reporting and/or recordkeeping requirements of this letter affect fewer than 10 respondents; therefore, OMB clearance is not required under P. L.96-511.
Sincerely, Lester L. Kintner, Senior Project Manager Project Directorate 11-1 Division of Reactor Projects -I/II Office of Nuclear Reactor Regulation
Enclosure:
As stated cc w/ enc 1:
See next page 4
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Mr. W. T. Cottle System Energy Resources, Inc.
GrandGulfNuclearStation(GGNS) cc:
Mr. T. H. Cloninger Mr. C. R. Hutchinson Vice President, Nuclear Engineering GGNS General Manager
& Support System Energy Resources, Inc.
System Energy Resources, Inc.
P. O. Box 756 P. O. Box 31995 Port Gibson, Mississippi 39150 Jackson, Mississippi 39286 Robert B. McGehee, Esquire The Honorable William J. Guste, Jr.
Wise, Carter, Child, and Attorney General Caraway Department of Justice P. O. Box 651 State of Louisiana Jackson, Mississippi 39205 Baton Rouge, Louisiana 70804 Nicholas S. Reynolds, Esquire Office of the Governor Bishop, Liberman, Cook, Purcell State of Mississippi and Reynolds Jackson, Mississippi 39201 1400 L Street, N.W. - 12th Floor Washington, D.C.
20005-3502 Attorney General Gartin Building Mr. Ralph T. Lally Jackson, Mississipp1 39205 Manager of Quality Assurance Entergy Services, Inc.
Mr. Jack McMillan, Director P. O. Box 31995 Division of Solid Waste Management Jackson, Mississippi 39286 Mississippi Department of Natural Resources P. O. Box 10385 Mr. John G. Cesare Jackson, Mississippi 39209 Director, Nuclear Licensing System Energy Resources, Inc.
Alton B. Cobb, M.D.
P. O. Box 469 State Health Officer Port Gibson, Mississippi 39150 State Board of Health P. O. Box 1700 Mr. C. B. Hogg, Project Manager Jackson, Mississippi 39205 Bechtel Power Corporation P. O. Box 2166 President Houston, Texas 77252-2166 Claiborne County Board of Supervisors Port Gibson, Mississippi 39150 Mr. H. O. Christensen Senior Resident Inspector Regional Administrator, Region II U.S. Nuclear Regulatory Comission U. S. Nuclear Regulatory Comission Route 2, Box 399 101 Marietta Street Port Gibson, Mississippi 39150 Suite 2900 Atlanta, Georgia 30323 i
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