ML20203H810
| ML20203H810 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 02/12/1999 |
| From: | Thadani M NRC (Affiliation Not Assigned) |
| To: | Geoffrey Edwards PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| References | |
| IEB-96-003, IEB-96-3, TAC-M96160, TAC-M96161, NUDOCS 9902230125 | |
| Download: ML20203H810 (5) | |
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UNITED STATES 3
j NUCLEAR REGULATORY COMM!SSION g gg WASHINGTON, D.C. 20666-0001 February 12, 1999 Mr. Garrett D. Edward Director-Licensing, MC 62A-1 PECO Energy Company Nuclear Group Headquarters Correspondence Control Desk P.O. Box No.195 Wayne, PA 19087-0195
SUBJECT:
COMPLETION OF LICENSING ACTION FOR BULLETIN 96-03,
- POTENTIAL PLUGGING OF EMERGENCY CORE COOLING SUCTION STRAINERS BY DEBRIS IN BOILING-WATER REACTORS," DATED MAY 6,1996, PEACH BOTTOM ATOMIC POWER ETATION (PBAPS), UNITS 2 AND 3 (TAC NOS. M96160 AND M96161)
Dear Mr. Edwards:
On May 6,1996, the U.S. Nuclear Regulatory Commission (NRC) issued Bulletin (BL) 96-03,
" Potential Plugging of Emergency Core Cooling Suction Strainers by Debris in Boiling-Water Reactors," to all holders of operating licenses or construction permits for boiling-water reactors (BWRs). The NRC issued BL 96-03 to ensure that the emergency core cooling systems (ECCS)in BWRs can perform their intended safety function to mitigate the effects of a postulated loss-of-coolant accident (LOCA). The BL provided three options for resolving this issue including (1) installation of large capacity passive strainers, (2) installation of self-cleaning strainers, or (3) installation of a backflush system.
In BL 96-03, the NRC staff specifically requested that licensees submit the following reports for each of their facilities:
- 1. A description of planned actions and mitigative strategies to use, the schedule for implementation, and proposed technical specification, if appropriate.
- 2. A report confirming completion and summarizing actions taken.
By letter dated November 1,1996, PECO Energy Company (the licensee) responded to BL 96-03 for PBAPS, Units 2 and 3. The licensee stated that it planned to install large capacity passive strainers which would be designed using the guidance in the Boiling Water Reactras Owners Group Utility Resolution Guidance (URG). The NRC staff reviewed the URG and issued a safety evaluation on August 20,1998. By letter dated November 25,1998, the licensee informed the NRC staff that it had completed all actions requested by the bulletin.
These actions included completion of the installation of new large-capacity, passive strainers on the Residual Heat Removal and Core Spray system pump suction lines at PBAPS, Units 2 and 3. The modification work was complefod on Unit 3 in October 1997 during refueling outage 3R11, and on Unit 2 in October 1998 during refueling outage 2R12.
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G. Edwards - The NRC staff has reviewed your response and has determined that the actions taken should minimize the potential for clogging of ECCS suction strainers and ensure the capability of the ECCS to provide lonD-term cooling following a LOCA as required by 10 CFR 50.46. The NRC staff considers your actions responsive to the concems raised in BL 96-03. Therefore, BL 96-03 is closed for your facilities. Detailed reviews of your strainer design and 10 CFR 50.59 evaluation may be performed on a plant-specific basis in the future.
Sincerely,
/s/
Mohan C. Thadani, Senior Project Manager Project Directorate 1-2 Division of Reactor Projects -!/11 Office of Nuclear Reactor Regulation Docket Nos. 50-277 and 50-278 cc: See next page DISTRIBUTION Docket File PUBLIC PDI-2 Reading JZwolinski WDean MThadani MO'Brien CBerlinger RElliot OGC ACRS
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The NRC staff has reviewed your response and has determined that the actions taken should minimize the potential for clogging of ECCS suction strainers and ensure the capability of the ECCS to provide long-term cooling following a LOCA as required by 10 CFR 50.46. The NRC staff considers your actions responsive to the concoms raised in BL 96-03. Therefore, BL 96-03 is closed for your facilities. Detailed reviews of your strainer design and 10 CFR 50.59 evaluation may be performed on a plant specific basis in the future.
Sincerely.
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/s/
l Mohan C. Thadani, Senior Project Manager i
Project Directorate 1-2 Division of Reactor Projects -1/11 Office of Nuclear Reactor Regulation Docket Nos. 50-277 and 50-278 4
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G. Edwards 2-The NRC staff has reviewed your response and has determined that the actions taken should minimize the potential for clogging of ECCS suction strainers and onsure the capability of the ECCS to provide long-term cooling following a LOCA as required by 10 CFR 50.46. The NRC staff considers your actions responsive to the concems raised in BL 96-03. Therefore, BL 96-03 is closed for your facilities. Detailed reviews of your strainer design and 10 CFR 50.59 evaluation may be performed on a plant-specific basis in the future.
Sincerely,
'=
Mohan C. Thadani, Senier P.% ject Manager l
1 Project Directorate 1-2 Division of Reacto*rojects - 1/11 l
Office of Nuclear Reactor Regulation Docket Nos. 50-277 and 50-278 cc: See next page l
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A Mr. Garrett D. Edwards Peach Bottom Atomic Power Station, PECO Energy Company Units 2 and 3 r,c:
J. W. Durham, Sr., Esquire Chief-Division of Nuclear Safety Sr. V.P. & G 4eral Counsel PA Dept. of PECO En gy Cer,'.pany Environmental Resources 231 M. net Street, S26-1 P.O. Box 8469 Philadelphia, PA 19101 Harrisburg, PA 17105-8469 PECO Energy Company ATTN: Mr. J. Doering, Vice President Board of Supervisors Peach Bottom Atomic Power Station Peach Bottom Township i
1848 L y Road R. D. #1 Delta, d.17314 Delta, PA 17314 PECO Energy Company Public Service Commission of Maryland ATTN: Regulatory Engineer, A4-SS Engineering Division Peach Bottom Atomic Power Station Chief Engineer 1848 Lay Road 6 St. Paul Centre Delta, PA 17314 Baltimore, MD 21202-68^6 Resident inspector Mr. Richard McLean U.S. Nuclear Reguletory Commission Power Plant and Environmental Peach Bottom Atomic Power Station Review Division P.O. Box 399 Department of Natural Resources Delta, PA 17314 B-3, Tawes State Office Building Annapolis, MD 21401 Regional Administrator, Region i U.S. Nuclear Regulatory Commission Dr. Judith Johnsrud 475 Allendale Road National Energy Committee King of Prussia, PA 19406 Sierra Club 433 Oriando Avenue Mr. Roland Fletcher State College, PA 16803 Department of Environment 201 West Preston Street Manager-Financial Control & Co-Owner Baltimore, MD 21201 Affairs j
Public Service Electric and Gas A. F. Kirby, Ill Company i
Extemal Operations - Nuclear P.O. Box 236 Delmarva Power & Light Coinpany Hancocks Bridge, NJ 08038-0236 P.O. Box 231 Wilmington, DE 19899 Mansgcr-Pee.2 Bottom Licensing PECO Energy Cw.peny PECO Energy Company Nuclear Group Hes;h vters Plant Manager Correspondence Cor'r.d Desk Peach Bottom Atomic Power Station P.O. Box No.195 i
1848 Lay Road Wayne, PA 19087-0195 Delta, PA 17314 4
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