ML20211K703
| ML20211K703 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 08/30/1999 |
| From: | Hutton J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9909080053 | |
| Download: ML20211K703 (4) | |
Text
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PECO NUCLEAR-etco omerov cemne,v 065 Chesterbrook Boulevard i
A Unit of PECO Energy VAyne, PA 19087 5091 August 30,1999 Docket No. 50-278 License No. DPR-56 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20556
Subject:
Peach Bottom Atomic Power Station, Unit 3 Additional Information Concoming License Change Application ECR 99-01255
Dear Sir / Madam:
On July 12,1999, PECO Energy Company (PECO Energy) submitted License Change Application ECR 99-01255, in accordance with 10 CFR 50.90, requesting a change to the Peach Bottom Atomic Power Station (PBAPS), Unit 3 Facility Operating License. This proposed change will revise Technical Specifications (TS) TS 2.1.1.2
(" Reactor Core SLs") and Section 5.6.5 (" Core Operating Limits Report"). Attached is our response to your request for additional information dated August 26,1999, concoming this License Change Application.
If you have any questions, please do not hesitate to contact us.
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Very truly yours, Y
ff$
mes A. Hutton t\\
irector-Licensing NU
Enclosures:
Affidavit, Attachment 1, Attachment 2 cc:
H. J. Miller, Administrator, Region I, USNRC A. C. McMurtray, USNRC Senior Resident inspector, PEAPS -
R. R. Janati, Commonwealth of Pennsylvania 9909000053 990830 PDR-ADOCK 05000278 P-PDR o
~
COMMONWEALTH OF PENNSYLVANIA:
- ss.
COUNTY OF CHESTER J. J. Hagan, being first duly swom, deposes and says:
That he is Senior Vice President, Nuclear Operations of PECO Energy Company; the
.' Applicant herein; that he has read the attached additional information concerning License
' Change Application ECR 99-01255, for Peach Bottom Facility Operating License DPR-56, and -
knows the contents thereof; and that the statements and matters set forth therein are tme and correct to the best of his knowledge, information and belief.
- r Vice President Subscribed and swom to before me this 80 day.
of 1999.
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i ATTACHMENT 1 i
PEACH BOTTOM ATOMIC POWER STATION UNIT 3 1
l Docket No. 50-278 l
License No. DPR-56 LICENSE CHANGE APPLICATION ECR 99-01255 l
l Response to Request for Additional Information
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l Docket No. 50-278 License No. DPR-56 Question 1:
In order for the NRC staff to perform an independent verification of the safety limit analysis, provide the type and number of fuel assemblies in the Cycle 13 core. Identify any difference in the core loading pattern between Cycle 12 and Cycle 13 operation and if any difference is identified, describe its impact on the calculation of the safety limit minimum critical power ratio.
i Answer:
The following are the number and types of fuel assemblies that make up the core for Peach Bottom Atomic Power Station, Unit 3, Cycle 13:
196 GE-11 (third cycle in the core) 292 GE-13 (second cycle in the core) 276 GE-13 (fresh)
Total: 764 The following are physical differences in the core loading between Cycle 12 and Cycle 13 that could impact the SLMCPR: 1) the Cycle 13 core has m' ore fresh fuel bundles loaded closer to the center of the core, 2) Cycle 13 has 16 fewer fresh fuel bundles than Cycle 12, 3) once burned (second cycle) bundles with less exposure (i.e.,
irradiated bundles with higher reactivity) are loaded in the interior region of the core, and 4) twice bumed (third cycle) bundles with higher exposure (i.e., irradiated bundles with less reactivity) are loaded on the periphery of the core. This combination results in a greatv relative power peaking at the center of the core during Cycle 13 as compared to Cycle 12 Therefore, Cycle 13 is loaded " hotter" in the interior of the core, and
" cooler" at the periphery, which results in the greater radial peaking of the Cycle 13 i
core. The greater radial peaking of the Cycle 13 core contributes to the lower SLMCPR for Cycle 13.
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'AJG-26-1999 16 31 P.02/04
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. - a UNITED STATES g*
g" NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. unamonnni August 26, 1999 j
Mr. James A. Hutton Director-Licensing, WIC 62A-1
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PECO Energy Company j
Nuclear Group Headquarters I
Correspondence C trol Desk P.O. Box No.195 Wayne, PA 19087-0195
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING PEACH BOTTOM ATOMIC POWER STATION, UNIT 3 - MINIMUM CRITICAL POWER RATIO (TAC NO. MA8053)
Dear Mr. Hutton:
Based on our evaluatiorv of your submittal dated July 12,1999, we find that additional j
information, as delineated in the enclosure, is required to continue our review. On August 18, j
1999, we discussed these issues with members of your staff and a 30-day response from i
receipt of this letter was mutually acceptable.
Should you have any questions regarding this request, please contact me at (301) 415-1483.
Sincerely,
%% C.
Bartholomew C. Buckley, Sr. Project Ma ger, Section 2 Project Directorate i DMsion of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-278
Enclosure:
Request for Additional Information cc w/ encl: See next page i
s N
08/26/99 THU 10:18 tTX/RI NO 73031 @ 002
ad.G-35-B@s@ 16sSS p e3fea Peach Bsttom Atoml:: Power St:;tinn, 1
i Units 2 and 3 cc:
k J. W. Durham, Sr., Esquire -
Chief-Division of Nuclear Safety Sr. V.P. & General Counsel PA Dept. of PECO Energy Company
. Environmental Resources 2301 Market Street, S26-1 P.O. Box 8469 Philadelphia, PA 19101 Harrisburg, PA 17105-8469 PECO Energy Company Board of Suprovisors ATTN: Mr. J. Doering, Vice President Peach Bottom Township Peach Bottom Atomic Power Station R. D. #1 1848 Lay Road Delta, PA 17314 Delta, PA 17314 Public Service Commission of PECO Energy Company Maryland ATTN: Regulatory Engineer, A4-5S Engineering Division Peach Bottom Atomic Power Station Chief Engineer Chief Engineer 6 St. Paul Center 1848 Lay Road Baltimore, MD 21202-6806 Delta. PA 17314 Mr. Richard McLean Resident inspector Power Plant and Environmental U.S. Nuclear Regulatory Commission Review Division Peach Bottom Atomic Power Station Department of Natural Resources P.O. Box 399 B-3. Tawes State Office Building Delta, PA 17314 Annapolis, MD 21401 Regional Administrator, Region i Dr. Judith Johnsrud U.S. Nuclear Regulatory Commission National Energy Committee 475 Allendale Road Sierra Club King of Prusela, PA 19406 433 Orlando Avenue State College, PA 16803 Mr. Roland Fletcher Department of Environment FAanager Financial Control & Co-owner 201 West Preston Striaet Affairs Baltimore, MD 21201:
Public Service electric and Gas Company A. F. Kirby. ll1 P.O. Box 236 Extemal Operations - Nuclear Hacocks Bridge, NJ 08038-0236 Delmarva Power & Light Company P.O. Box 231 Manager-Peach Bottom Licensing Wilmington, DE 19899 PECO Energy Company Nuclear Group Headquarters PECO Energy Company Correspondence Control Desk Plant Manager P.O. Box No.195 Peach Bottom Atomic Power Station Wayne, PA 19087-0195 1848 Lay Road Delta, PA 17314 I
08/26/99 THU 16:18 [TI/RI NO 7303) @ 003
AUG-26-1999 16:31 P.04/04
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REQUEST FOR ADDITIONAL INFORMATION_
PEACH BOTTOM ATOMIC POWER STATION. UNIT NO. 3 a
In order for the NRC ntaff to perform an independent verification of the safety limit analysis, provide the type and number of the fuel assemblies in the Cycle 13 core. l dent;ty any difference in the core loading pattern between Cycle 12 and Cycle 13 operation and if any difference is identified, describe its impact on the calculation of the safety limit minimum critical power ratio.
.i Enclosure j
i TOTAL P.04 08/26/90 TIIU 16:18 [TX/RX No 7303] @ 004