ML20203L309
| ML20203L309 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 08/18/1986 |
| From: | Tucker H DUKE POWER CO. |
| To: | Harold Denton, Youngblood B Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8608260044 | |
| Download: ML20203L309 (2) | |
Text
9 e
4 DUKE POWER GOMPANY e.o. nox amas CHAMLOTTE, N.C. 28242 HALH. TUCKER teLernown vwnemmasonar
@M) ONM weasan reuse et on August 18, 1986 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Attention:
Mr. B. J. Youngblood, Project Director PWR Project Directorate No. 4
Subject:
Catawba Nuclear Station, Unit 1 Docket No. 50-413 Cycle 2 Reload-Peaking Factor Limit Report
Dear Mr. Denton:
My letter of July 15, 1986 submitted proposed license amendments to facility operating licenses NPF-35 and NPF-52 for Catawba Nuclear Station, Units 1 and 2, respectively. The proposed amendments ensure that plant operation is consistent with the design and safety evaluation conclusion statements made in the Catawba Unit 1 Cycle 2 Reload Safety Evaluation (RSE) and ensure that these conclusions remain valid. The submittal indicated that the peaking factor limit report for Catawba Unit 1/ Cycle 2, which is required in accordance with Catawba Technical Specification 6.9.1.9, would be submitted at least 60 days prior to cycle initial criticality. The Unit 1 End of Cycle 1 refueling outage was originally scheduled to begin August 29, 1986, with Cycle 2 initial criticality scheduled for November 2, 1986. However, due to a seal failure experienced by a Unit 1 Reactor Coolant Pump, the refueling outage was rescheduled to begin August 13, 1986, with Cycle 2 initial criticality rescheduled for October 7, 1986.
Attached is the Peaking Factor Limit Report for Catawba Unit 1/ Cycle 2 which was prepared according to the origital Cycle 1 refueling outage and Cycle 2 initial criticality schedule. Westinghotse Electric Corporation is presently considering the implications of rescheduling the Unit 1 End of Cycle 1 refueling outage to begin August 13, 1986. A revised b0it 1 Cycle 2 Reload Safety Evaluation and any appropriate changes to the Unit 1/ Cycl
- 2 Reload-Peaking Factor Limit Report will be submitted on August 29, 1986. Also,.Se enclosed report provides the W (Z) functions that agg to be used for RAOC and base load operation during Cycle 2, and the value of APL For both RAOC and base load operation, a set of data covering three specific burnup steps is provided which permits the determination of W(Z) at any cycle burnup through the use of three point interpolation.
The information for base load operation has been obtained using a 3 percent AFP about a measured target in the power interval between 80% and 100% of rated thermal power. Figures 8608260044 860318 4
k lD PDR ADOCK 05003413 P
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Mr. Har:1d R. D:nton, Dir:cter August 18, 1986 Page Two l
1-3 are the W(Z) functions appropriate for RAOC operation and Figures 4-6 are the W(Z) functions appropriate for base load operation. The appropriate W(Z) function is used to' confirm that the heat flux hot channel factor, Fq(Z), will be limited to the values specified in the Technical Specifications.
Very truly yours, m
r Hal B. Tucker JGT/01/ sib Attachment I
xc:
Dr. J. Nelson Grace, Regional Administrator U. S. Nuclear Regulatory Commission Region II l
101 Marietta Street, NW, Suite 2900 l
Atlanta, Georgia 30323 7
Mr. Heyward Shealy, Chief' Bureau of Radiological Health South Carolina Department of Health &
Environmental Control i
2600 Bull Street l
Columbia, South Carolina 29201 1
INPO Records Center Suite 1500 1100 Circle 75 Parkway Atlanta, Georgia 30339 American Nuclear Insurers c/o Dottie Sherman, ANI Library r
The Exchange, Suite 245 270 Farmington Avenue Farmington, CT 06032 M&M Nuclear Consultants 1221 Avenue of the Americas New York, New York 10020 NRC Resident Inspector Catawba Nuclear Station 1
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