ML20035F903
| ML20035F903 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 04/20/1993 |
| From: | James Shea Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9304230041 | |
| Download: ML20035F903 (14) | |
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NUCLEAR REGULATORY COMMISSION E
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April 20, 1993 Docket Nos. 50-277 and 50-278 l
LICENSEE:
Philadelphia Electric Company, et. al.
f FACILITY: Peach Bottom Atomic Power Station, Units 2 and 3
SUBJECT:
SUMMARY
OF APRIL 13, 1993 MEETING ON DESIGN OF DEDICATED ALTERNATE AC POWER SOURCE FEEDER FROM CON 0WINGO HYDROELECTRIC STATION i
On April 13, 1993, the NRC staff met with Philadelphia Electric Company (PEco) i representatives at the NRC offices in Rockville, Maryland, to discuss the planned installation of a dedicated power faeder from the Conowingo Hydroelectric Station to the Peach Bottom Atomic Power Station (PBAPS),
Units 2 and 3.
A list of meeting participants is enclosed (Enclosure 1).
Also enclosed is a copy of PEco's meeting handout (Enclosure 2).
PECo representatives opened the meeting by recounting the history of the proposed resolution of the Station Blackout issue for PBAPS, Units 2 and 3.
I In a supplemental safety evaluation (SSE) dated October 23, 1992, the staff i
found acceptable PECo's proposal to install a dedicated, weather protected, i
power feeder from the Conowingo Hydroelectric Station to the Peach Bottom facility to serve as an alternate AC power (AAC) source. The SSE was based on i
a cenceptual design for the Conowingo feeder, presented by PEco in an August l
6, 1992, submittal.
At the April 13, 1993, meeting, PEco presented additional details on the power feeder.
i 1
The line will consist of a 9-mile submarine cable, running from the conowingo Hydroelectric Station to the Peach Bottom facility and will be buried on the bottom of the Conowingo reservoir. The line will be capable of handling at c
least 15MVA at 34.5 kV. At the source end, the line will tie into an existing substation, the Susquehanna substation, located on the south end of the Conowingo dam. A new circuit breaker will be installed at the Susquehanna l
substation to tie the submarine cable into existing bus work. The Conowingo station has seven 36 MW generators and four 65 MW generators that will be able to provide power to the line. Attendant controls for the new circuit breaker will also be installed.
l At Peach Bottom, PEco will install a new weather protected outdoor switchgear, a 35 kV circuit breaker, a 15 kV circuit breaker, a 15 kV outdoor switchgear and a 35kV/15kV transformer as well as the necessary controls and protective relays.
The new substation will be located outside the protected area. The new Peach Bottom substation will tie into the existing onsite distribution via the 2 SU B switchgear.
From the 2 SU B switchgear, power can be fed to the 4 kV emergency buses via the Unit 2 or Unit 3 startup switchgear.
The staff expressed concern that the equipment at the Susquehanna and new Peach Bottom substation be properly protected from severe weather.
The staff is concerned that the same weather event that causes a station blackout could f
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. affect improperly protected AAC equipment.
PEco provided additional information on the weather protected aspects of the substation equipment.
PECo presented an approximate timetable for completion of the project.
Installation of the submarine cable could begin as early as the fall of 1993.
Completion of the Peach Bottom modifications is not expected until the fall of 1994.
PEco described the scope of the technical specification requirements that they expect to propose for the new power feeder.
In addition, PECo re-expressed their intention to apply for an extension of the existing emergency diesel generator (EDG) allowed out-of-service time (A0T) based on completion of the Conowingo power feeder. The staff stated that it would review the proposal based on the merit of any safety benefits Co may find for such an extension.
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, &g Joseph 04. Shea, Project Manager Praject Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Enclosures:
1.
Meeting Attendees 2.
Licensee Meeting Handout i
cc w/ enclosures:
See next page i
l k.
l Philadelphia Electric Company Peach Bottom Atomic Power Station, Units 2 and 3 cc:
J. W. Durham, Sr., Esquire Mr. William P. Dornsife, Director Sr. V.P. & General Counsel Bureau of Radiation Protection Philadelphia Electric Company Pennsylvania Department of 2301 Market Street, 526-1 Environmental Resources Philadelphia, Pennsylvania 19101 P. O. Box 2063 Harrisburg, Pennsylvania 17120 Philadelphia Electric Company ATTN: Mr. D. B. Miller, Vice President Board of Supervisors j
Peach Bottom Atomic Power Station Peach Bottom Township Route 1, Box 208 R. D. #1 Delta, Pennsylvania 17314 Delta, Pennsylvania 17314 Philadelphia Electric Company Public Service Commission of Maryland ATTN:
Regulatory Engineer, Al-25 Engineering Division Peach Bottom Atomic Power Station ATTN: Chief Engineer j
Route 1, Box 208 231 E. Baltimore Street Delta, Pennsylvania 17314 Baltimore, MD 21202-3486 Resident Inspector Mr. Richard McLean U.S. Nuclear Regulatory Commission Power Plant and Environmental l
Peach Bottom Atomic Power Station Review Division i
P.O. Box 399 Department of Natural Resources Delta, Pennsylvania 17314 B-3, Tawes States Office Building Annapolis, Maryland 21401 Regional Administrator, Region I U.S. Nuclear Regulatory Commission Mr. George A. Hunger, Jr.
475 Allendale Road Director-Licensing, MC 52A-5 King of Prussia, Pennsylvania 19406 Philadelphia Electric Company Nuclear Group Headquarters Mr. Roland Fletcher Correspondence Control Desk Department of Environment P.O. Box No. 195-201 West Preston Street Wayne, Pennsylvania 19087-0195 Baltimore, Maryland 21201 Carl D. Schaefer External Operations - Nuclear Delmarva Power & Light Company P.O. Box 231 Wilmington, DE 19899 h
1 ENCLOSURE 1 MEETING ATTENDEES MEETING BETWEEN PHILADELPHIA ELECTRIC COMPANY AND THE NRC APRIL 13. 19M NAME ORGANIZATION M. Kray PECo W. Mindick PEco A. Bazzani PEco A. Jones PEco D. Lehman Stone and Webster P. Ott PSE&G S. Maingi Commonwealth of Pennsylvania C. Berlinger NRC/EELB A. Gill NRC/EELB C. Thomas NRC/EELB J. Shea NRC/DRP www wr-
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CONOWilsGO SBO LINE AGENDA INTFODUCTION M ARILYN KRAY MANAGER, PSAPS LICENSING PRESENTATION ALLAN JONES
=
PROJECT ENGINEER QUES 710NS i
=
SUPPORTING PECO REPRESENTATIVES WILLIAM MINDICK ELECTRICAL ENGINEERING ANTHONY BAZZANI PROJECT MANAGER DAVID LEliMAN STONE & WEBSTER i
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CONOWINGO SBO _INE DESIGN FEATJRES
= FUNCTION AS THE ALTERNATE AC (AAC) POWER SOURCE
= CAPABLE OF BLACK START
. SEVERE WEATHER PROTECTED
= TESTABLE l
- DESIGN LOAD - 15MVA AT 34.5KV l
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- LOSS OF POWER ANNUNCI ATION l
- ELECTRICAL 1E / NON-1E ISOLATION PROVIDED
= CONNECTED TO PBAPS EMERGENCY LOADS WITHIN 1 HOUR FOLLOWING A SBO SUPPORT SAFE SHUTDOWN OF BOTH OPERATING UNITS
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VIA MANUAL CONTROL (2 SHUTDOWN COOLING LOOPS INCLUDING 2 RHR AND 2 HPSW PUMPS)
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CO\\OWINGO SBO LINE JOCJMENT CHANGES UFSAR CHANGES DISCUSSION OF STATION BLACKOUT DISCUSSION OF LINE AND ITS FUNCTION
=
i SINGLE LINE REVISION TECH SPEC REQUIREMENTS
= TESTING REQUIREMENTS
. NRC NOTIFICATION REQUIREMENTS (NOTIFY NRC IF LINE IS OUT > 15 DAYS AND IMPLEMENT COMPENSATORY ACTIONS)
= DIESEL GENERATOR LCO EXTENSIO..
PBAPS EMERGENCY PROCEDURES I
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PECO SYSTEM RESTORATION PROCEDURES
= SYSTEM RESTORATION PROCEDURE WILL BE REVISED TO ADDRESS PROVIDING POWER TO PBAPS FOLLOWING A SYSTEM BLACKOUT
= THE POWER SYSTEM DIRECTOR IS THE SINGLE POINT OF CO NTACT FOR COMMUNICATIONS AND DIRECTION AND IS RESPONSIBLE TO ENSURE THAT POWER IS RESTORED TO PBAPS AS THE TOP PRIORITY
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affect improperly protected AAC equipment.
PEco provided additional i
information on the weather protected aspects of the substation equipment.
PECo presented an approximate timetable for completion of the project.
Installation of the submarine cable could begin as early as the fall of 1993.
Completion of the Peach Bottom modifications is not expected until the fall of 1994.
PECo described the scope of the technical specification requirements that they expect to propose for the new power feeder.
In addition, PEco re-expressed their intention to apply for an extension of the existing emergency diesel generator (EDG) allowed out-of-service time (A0T) based on completion of the Conowingo power feeder.
The staff stated that it would review the proposal based on the merit of any safety benefits PEco may find for such an extension.
/S/
Joseph W. Shea, Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Enclosures:
1.
Meeting Attendees 2.
Licensee Meeting Handout cc w/en:losures:
See next page DISTRIBUTION w/ Enclosures 1 and 2 DISTRIBUTION w/ Enclosure 1 Docket File TMurley/FMiraglia ACRS(10)
NRC & Local PDRs JPartlow VMcCree PDI-2 Reading SVarga JShea JCalvo EWenzinger CMiller CAnderson M0'Brien 0GC EJordan CBerlinger AGill CThomas APal
- Previously Concurred n
b PDl2/P4 EELB/BC*
PDI-2/D 0FFICE PQJ4 M -
[dkkY J5fRN CBerlinger CMi h )
NAME Y/M3 4/k/93 04/16/93 4 / 16 93 DATE
/
0FFICIAL RE00i/D COPY DOCUMENT NAME:
PB4-13.MTS