ML20216J863
| ML20216J863 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 09/12/1997 |
| From: | Le N NRC (Affiliation Not Assigned) |
| To: | Sumner H SOUTHERN NUCLEAR OPERATING CO. |
| Shared Package | |
| ML20216J869 | List: |
| References | |
| TAC-M99066, TAC-M99067, NUDOCS 9709180133 | |
| Download: ML20216J863 (4) | |
Text
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WASHINGTON, D.C. " M September 12, 1997 Mr. H. L. Sumner, Jr.
Vice President - Nuclear -
Hatch Project Southern Nuclear Operating Company, Inc.
Post Office Box 1295 Birmingham, Alabama 352011295
SUBJECT:
GENERAL ELECTRIC NUCLEAR MEASUREMENT ANALYSIS AND CONTROL POWER RANGE NEUTRON MONITORING SYSTEM UPGRADE - EDWIN 1.
HATCH, UNITS 1 AND 2 (TAC NOS M99066 AND M99067)
Dear Mr. Sumncr:
By letter dated October 26,1996, as supplemented by letter dated February 19,1997, Georgia Power Company and Southern Nuclear Operating Company, Inc. (SNC) proposed to replace the existing analog power range monitoring system in the Edwin !. Hatch Nuclear Plant (Hatch), Units 1 and 2, with a digital General Electric Nuclear Measurement Analysis and Control power range neutron monitoring system (PRNMS). The staff approved technical specification (TS) amendments for the avera0e power range monitoring portion of the PRNMS on March 21,1997. Proposed TS amendments for the oscillation power range monitor (OPRM) portion of the PRNMS were to be submitted by SNC upon completion of a 6-month testing period.
By letter dated June 20,1997, you requested resolution of issues associated with implementation of the OPRM. Preliminary results during the 6 month monitoring period for the OPRM indicated that the response of the OPRM was more sensitive than anticipated; and, thus, you requested revisions to the OPRM settings to eliminate spurious alarms. To validate these settings, you requested an increase in the OPRM monitoring period for both Hatch, Units 1 and 2. The requested increase extends the OPRM monitoring period from 6 months to the startup of each unit from its next refueling cutage. Additionally, you requested minor revisions to the staff's PRNMS safety evaluation for Hatch, dated March 21,1997, to address thcae :, light differences between the approved TS Bases amendn.ents and your October 26,1996, submittal.
The enclosed safety evaluation approves the extension of the 6-month OPRM monitoring period to the requested interval, and changes the TS Bases to address the differences t
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2 September 12, 1997 between your previous submittal and the staff's SE approving that submittal. A separate safety evaluation regarding changes in the OPRM system sensitivity submitted with your June 20,1997, letter will be issued later when the staff has completed its review.
Therefore TAC Nos. M99066 and M99067 will remain open.
Sincerely, ORIGINALSIGNED BY:
Ngoc B. (Tommy) Le, Project Manager Project Directorate ll 2 Division of Reactor Projects 1/ll Office of Nuclear Reactor Regulation Docket Nos. 60 321 and 50 366
Enclosure:
Safety Evaluation cc w/oncl: See next page Distribution:
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Mr. H. L Sumner, Jr. between your previous submittal and the staffs SE approving that submittal. A separate safety evaluation regarding changes in the OPRM system sensitivity submitted with your June 20,1997, letter will be issued later when the staff has completed its review. Therefore TAC Nos. M99066 and M99067 will remain open.
. Sincerely, 6ed. L Ngoc B. (Tommy) Le, Project Manager Project Directorate ll-2 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket Nos. 50-321 and 50-366 Enclosure Safety Evaluation cc w/ encl: See next page J
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.t EMn li Hatch Nuclear Plant i
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Mr. Emest L Blake, Jr.
- Charles A. Patrizia, Esquire 4
Shaw, Pittman, Potts Paul, Hastings,' Janofsky & Walker and Trowbridge 10th Floor 2300 N Street, NW.
129g Pennsylvania Avenue
- Washington, DC 20037 Washington, DC 20004 9500-Mr, D. M. Crowe Chairman Manager, Lloonsing
'Appling County Commissioners
- Southem Nuclear Operating County Courthouse Company, Inc.
- Baxley, Georgia 31513 9
P. O. Box 1295 Birmingham, Alabama 352011295 Mr. W. G. Harriston, lil l
President and Chief Executive i-
-Resident inspector Omcor Plant Hatch Southem Nuclear Operating Southem Nuclear _ Operating Company, Inc.
. Company, Inc; P. O. Box 1295
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P. O. Box 439 Birmingham, Alabama 352011295 Baxley, Georgia 31513 Mr. J. D. Woodard Regional Administrator, Region li-Executive Vice President
- U.S. Nuclear Regulatory Commission Southem Nuclear Operating Atlanta Federal Center Company, Inc.
61 Forsyth Street, SW, Suite 23T85 P. O. Box 1295 i
Atlanta, Georgia 30303 Dirmingham, Alabama 35201-1295 Mr. Charles H. Badger Mr. P. W. Wells Office of Planning and Budget General Manager, Edwin 1. Hatch Room 610 Nuclear Plant 270 Washington Street, SW, Southem Nuclear Operating 3
Atlanta, Georgia 30334 Company, Inc.
P. O. Box 439 Harold Rehois, Director Baxley, Georgia 31513 Department of Natural Resources 205 Butler Street, SE., Suite 1252 Mr. R. D. Barker Atlanta, Georgia 30334 Program Manager Fossil & Nuclear Operations -
Steven M. Jackson Oglethorpe Power Corporaten Senior Engineer - Power Supply 2100 East Exchange Place l
Municipal Electric Authority -
P. O.- Box 1349 of Georgia Tucker, Georgia 30085-1349 l.
1470 Riverodge Parkway, NW i
l Atlanta, Georgia 30328 4684 L
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Edwin I. Hatch Nuclear Plant oc:
Mr. Emest L. Blake, Jr.
Charies A, Patrizia,' Esquire
.Shaw, Pittman, Potts Paul Hastings, Janofsky & Walker-
- and Trowbridge 10th Floor i
2300 N Street, NW.
1299 PennsyNanla Avenue Washington, DC 20037 Washington, DC 20004 g500 Mr. D. M. Crowe Chairman Manager, Licensing Appling County Commissioners Southem Nuclear Operating County Courthouse ~
Company, Inc.
Baxley, Georgia 31513 P. O. Box 1295 Birmingham, Alabama 35201-1295 Mr. W. G. Harriston, lil President and Chief Executive Resident inspector Officer Plant Hatch Southem Nuclear Operating Southem Nuclear Operating Company, Inc.
Company, Inc.
P. O. Box 1295 P. O. Box 439 Birmingham, Alabama 35201-1295 Baxley, Georgia 31513 Mr. J. D. Woodard Regional Administrator, Region ll Executive Vice President U.S. Nuclear Regulatory Commission Southem Nuclear Operating Atlanta Federal Center Company, Inc.
61 Forsyth Street, SW, Suite 23T85 P. O. Box 1295 Atlanta, Georgia 30303 Birmingham, Alabama 35201-1295 Mr. Charles H. Badger-Mr. P. W, Wells Omco of Planning and Budget General Manager, Edwin 1. Hatch Room 610 Nuclear Plant 270 Washington Street, SW.
Southem Nuclear Operating Atlanta, Georgia 30334 Company, Inc.
P. O. Box 439 Harold Rebels, Director Baxley, Georgia 31513 Department of Natural Resources 4
205 Butler Street, SE., Suite 1252 Mr. R. D. Barker
- Atlanta, Georgia 30334 Program Manager Fossil & Nuclear Operations Steven M. Jackson -
Oglethorpe Power Corporation Senior Engineer - Power Supply 2100 East Exchange Piace Municipal Electric Authority:
P. O. Box 1349 -
of Georgia:
Tucker, Georgia 'M085-1349 1470 Riverodge Parkway, NW Atlanta, Georgia 30328 4684 l
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