ML20045F828
| ML20045F828 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 07/01/1993 |
| From: | Trottier E Office of Nuclear Reactor Regulation |
| To: | Frizzle C Maine Yankee |
| Shared Package | |
| ML20045F829 | List: |
| References | |
| IEB-88-011, IEB-88-11, TAC-M72141, NUDOCS 9307090058 | |
| Download: ML20045F828 (3) | |
Text
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July 1, 1993 l
Docket No. 50-309 Mr. Charles D. Frizzle, President Maine Yankee Atomic Power Company j
83 Edison Drive Augucta, Maine 04336
[
Dea "r. Frizzle:
l l
SUBJEC' SAFETY EVALUATION FOR COMBUSTION ENGINEERING OWNERS CROUP REPORT CEN-387-P, REVISION 1, " PRESSURIZER SURGE LINE THERMAL STRATIFICATION EVALUATION" (BULLETIN 88-11) (TAC NO. M72141)
By letter dated December 31, 1991, you responded to NRC Bulletin 88-11 and i
indicated that you were participating in the Combustion Engineering Owners Group (CEOG) effort to evaluate pressurizer surge line thermal stratification.
The staff and its consultant, Brookhaven National Laboratory, have completed their review of CEOG Report CE% 387-P, " Pressurizer Surge Line Flow Stratification." The staff concludes that the CE0G analysis adequately demonstrates that the bounding surge line and nozzles meet ASME Code stress and fatigue requirements for the 40-year design life of the facility, considering the phenomenon cf thermal stratification and thermal striping.
1 The staff's safety evaluation of CEN-387-P, Revision 1, is enclosed.
l Action 1.d of Bulletin 88-11 required licensees to update their stress and f
fatigue analyses to ensure co:rpliance with applicable Code requirements.
The l
CEOG Report can be used to update plant-specific Code stress reports as required by item 1.d.
Please verify the applicability of the CEOG bounding analysis in CEN-387-P, Revision 1 to Maine Yankee Atomic Power Station.
In j
addition, please confirm that all actions required by Bulletin 88-11, including the updating of the plant-specific stress and fatigue analyses required by Action 1.d, have been completed.
Your response is requested within 180 days of receipt of this letter.
This request is covered by Office of Management and Budget Clearance Number 31S0-0011, which expires June 30, 1994.
The estimated average number of burden hours was already accounted for in the original bulletin, NRC Bulletin 88-11, " Pressurizer Surge Line Thermal Stratification", dated March 29, 1989.
Sincerely,
/S/
E. H. Trottier, Project Manager Project Directorate I-3 l
Division of Reactor Project - I/II Office of Nuclear Reactor Regulation i
Enclosure Safety Evaluation cc w/ enclosure:
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UNITED STATES NUCLEAR REGULATORY COMMISSION
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WASHINGTON, D.C. 205S5-0001 July 1, 1993 5
Docket No. 50-309 Mr. Charles D. Frizzle, President Maine Yankee Atomic Power Company 83 Edison Drive Augusta, Maine 04336
Dear Mr. Frizzle:
SUBJECT:
SAFETY EVALUATION FOR COMBUSTION ENGINEERING OWNERS GROUP REPORT CEN-387-P, REVISION 1, " PRESSURIZER SURGE LINE THERMAL STRATIFICATION EVALUATION" (BULLETIN 88-11) (TAC NO. M72141)
By letter dated December 31, 1991, you responded to NRC Bulletin 88-11 and I
indicated that you were participating in the Combustion Engineering Owners Group (CEOG) effort to evaluate pressurizer surge line thermal stratification.
i The staff and its consultant, Brookhaven National Laboratory, have completed their review of CEOG Report CEN-387-P, " Pressurizer Surge Line Flow Stratification." The staff concludes that the CEOG analysis adequately demonstrates that the bounding surge line and nozzles meet ASME Code stress and fatigue requirements for the 40-year design life of the facility, considering the phenomenon of thermal stratification and thermal striping.
The staff's safety evaluation of CEN-387-P, Revision 1, is enclosed.
Action 1.d of Bulletin 88-11 required licensees to update their stress'and f atigue analyses to ensure compliance with appliceble Code requirements.
The CEOG Report can be used to update plant-specific Code stress reports as required by item 1.d.
Please verify the applicability of the CEOG bounding analysis in CEN-387-P, Revision 1 to Maine Yankee Atomic Power Station.
In addition, please confirm that all actions required by Bulletin 88-11, including the updating of the plant-specific stress and fatigue analyses required by Action 1.d, have been completed.
Your response is requested within 180 days of receipt of this letter.
This request is covered by Office of Management and Budget Clearance Number 3150-0011, which expires June 30, 1994.
The estimated average number of burden hours was already accounted for in the original bulletin, NRC Bulletin 88-11. " Pressurizer Surge Line Thermal Stratification", dated Parch 29, 1989.
Since ely, E. H. Trottier, Project Manager Project Directorate I-3 Division of Reactor Project - I/II Office of Nuclear Reactor _ Regulation
Enclosure:
Safety Evaluation cc w/ enclosure:
See next page A
s-l Mr. Charles D. Frizzle Maine Yankee Atomic Power Station t
cc:
Mr. Charles B. Brinkman Mr. James R. Hebert, Manager Manager - Washington Nuclear Nuclear Engineering and Licensing Operations Maine Yankee Atomic Power Company Combustion Engineering, Inc.
83 Edison Drive 12300 Twinbrook Parkway, Suite 330 Augusta, Maine 04336 Rockville, Maryland 20852 i
Mr. Robert W. Blackmore Thomas G. Dignan, Jr., Esquire Plant Manager l
Ropes & Gray Maine Yankee Atomic Power Company i
One International Place P.O. Box 408 Boston, Massachusetts 02110-2624 Wiscasset, Maine 04578 Mr. Uldis Vanags Mr. G. D. Whittier, Vice President State Nuclear Safety Advisor Licensing and Engineering State Planning Office Maine Yankee Atomic Power Company State House Station #38 83 Edison Drive
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Augusta, Maine 04333 Augusta, Maine 04336 Mr. P. L. Anderson, Project Manager Mr. Patrick J. Dostie Yankee Atomic Electric Company State of Maine Nuclear Safety 580 Main Street Inspector Bolton, Massachusetts 01740-1398 Maine Yankee Atomic Power Company i
P. O. Box 408 Regional Administrator, Region I Wiscasset, Maine 04578 j
U.S. Nuclear Regulatory Commission 475 Allendale Road Mr. Graham M. Leitch King of Prussia, Pennsylvania 19406 Vice President, Operations Maine Yankee Atomic Power Company First Selectman of Wiscasset P. O. Box 408 Municipal Building Wiscasset, Maine 04578 U.S. Route 1 l
Wiscasset, Maine 04578 j
i Mr. Charles S. Marschall Senior Resident Inspector Maine Yankee Atomic Power Station U.S. Nuclear Regulatory Commission P. O. Box E Wiscasset, Maine 04578 i
I
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