ML15238B249
| ML15238B249 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 12/18/1980 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Parker W DUKE POWER CO. |
| Shared Package | |
| ML15238B250 | List: |
| References | |
| NUDOCS 8101070558 | |
| Download: ML15238B249 (3) | |
Text
~'~~#U Hr-7 SNSIC Rlngram ORB#4 Rdg MFairtile NRC PDR DEisenhut OELD L PDR RPurple AEOD TERA JRoe IE-3 Docket' No. 50-269 RTedesco ACRS-16 GLainas Gray File TNovak BJones-4 HDenton BScharf-10 Mr. William 0. Parker, Jr.
RDigg s Vice President - Steam ProductionCMiles' Duke Power Company JWetmore-,
P. 0. Box 2178 Lilips 422' South Church Street Charlotte, North Carolina 28242
Dear Mr. Parker:
By letter dated December 12, 1980, Duke Power Company pointed out that the power distribution curves we issued a part of the Oconee Unit No. 1 Cycle 6 reload license amendment dated FebruaVy 22 1980, did not provide for the full design burn-up of the Cycle 6 core.
The Cycle 5 core, which was desi gned for 320 effective full power days (EFPD) of burn-up, was replacedb the (y1e 6 core afte only EFPD.
The Cycle 6 core design was based a 320 EFP burn-upof Cycle and re suited in a 372 + 10 EFPD cycle length for cycle 6. Your letter of Decem ber 12,, stated tFat the approprate burn-up for Cycle 61s 83+1 EFPD based on the shortened Cycle 5. We conclude that the 11 EFPD extension of the Cycle 6 power distribution curves after the 16 EFPD sh teningof Cycle 5 is conservative for all the parmeters ad accidents affecting safe operation of the core, as the oldest fuel in the co ewil experience a net decrease in exposure o 5 days.
Therefore, based on the above, weae correcting Figures,3.5.2-lA2, 3.5.2 2A2, 3.5.2-3A2,and 3.5.2-4A2, of our 2ebrua222 1980 license amendment as follows:
change each title block feA fter 200 + 10 EFPD to 37
+ 10 EFPD" to "After 200 + 10 EFPb to 383 1
EFPD.
The corrected four figures are enclosed Sincerely, Original signed by Robert W. Reid Robert W. Reid, Chief Operating Reactors Branch #4 Division of Licensing Enplosure:
Corrected Technical
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REGt/b UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 December 18, 1980 Docket No. 50-269 Mr. William 0. Parker, Jr.
Vice President - Steam Production Duke Power Company P. 0. Box 2178 422 South Church Street Charlotte, North Carolina 28242
Dear Mr. Parker:
By letter dated December 12, 1980, Duke Power Company pointed out that the power distribution curves we issued as part of the Oconee Unit No. 1 Cycle 6 reload license amendment, dated February 22, 1980, did not provide for the full design burn-up of the Cycle 6 core.
The Cycle 5 core, which was designed for 320 effective full power days (EFPD) of burn-up, was replaced by the Cycle 6 core after only 304 EFPD.
The Cycle 6 core design was based on a 320 EFPD burn-up of Cycle 5 and re sulted in a 372 + 10 EFPD cycle length for Cycle 6. Your letter of Decem ber 12, stated tiat the appropriate burn-up for Cycle 6 is 383 + 10 EFPD based on the shortened Cycle 5. We conclude that the 11 EFPD extension of the Cycle 6 power distribution curves after the 16 EFPD shortening of Cycle 5 is conservative for all the parameters and accidents affecting safe operation of the core, as the oldest fuel in the core will experience a net decrease in exposure of 5 days.
Therefore, based on the above, we are correcting Figures 3.5.2-1A2, 3.5.2 2A2, 3.5.2-3A2 and 3.5.2-4A2, of our February 22, 1980 license amendment as follows:
change each title block from "After 200 + 10 EFPD to 372 + 10 EFPD" to "After 200 + 10 EFPD to 383 + 10 EFPD". The corrected four figures are enclosec.
Sincerely, Robert W. Reid, Chief Operating Reactors Branch #4 Division of Licensing
Enclosure:
Corrected Technical Specification Pages cc w/enclosure:
See next page
Duke Power Company cc w/enclosure(s):
Mr1 William L. Porter Duke Power Company P. 0. Box 2178 422 South Church Street Office of Intergovernmental Relations Charlotte, North Carolina 28242 116 West Jones Street Raleigh, North Carolina 27603 Oconee Public Library 201 South Spring Street Walhalla, South Carolina 29691 Honorable James M. Phinney County Supervisor of Oconee County Walhalla, South Carolina 29621 Director, Criteria and Standards Division Office of Radiation Programs (ANR-460)
U. S. Environmental Protection Agency Washington, D. C. 20460 U. S. Environmental Protection Agency Region IV Office ATTN: EIS COORDINATOR 345 Courtland Street, N.E.
Atlanta, Georgia 30308 Mr. Francis Jape U.S. Nuclear Regulatory Commission Route 2, Box 610 Seneca, South Carolina 29678 Mr. Robert B. Borsum Babcock & Wilcox Nuclear Power Generation Division Sulite 420, 7735 Old Georgetown Road Bethesda, Maryland 20014 Manager, LIS NUS Corporation 25136 Countryside Boulevard Cl earwater, Florida 33515 J. Michael McGarry, III, Esq.
DeBevoise & Liberman 12100 17th Street, N.W.
Washington, D. C. 20036