ML20036A105
| ML20036A105 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 04/30/1993 |
| From: | Hodges M NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Danni Smith PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| Shared Package | |
| ML20036A106 | List: |
| References | |
| NUDOCS 9305100050 | |
| Download: ML20036A105 (3) | |
See also: IR 05000277/1993080
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APR 3 01933
Docket Nos. 50-277
50-278
Mr. D. M. Smith
Senior Vice President - Nuclear
Philadelphia Eectric Company
Nuclear Group Headquarters
Correspondence Control Desk
Post Office Box 195
Wayne, Pennsylvania 19087-0195
Dear Mr. Smith:
SUBJECT:
ELECTRICAL DISTRIBUTION SYSTEM FUNCTIONAL INSPECTION OF
PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3,
COMBINED REPORT NOS. 50-277/93-80 AND 50-278/93-80
This letter transmits the report of the team inspection conducted by Mr. R. Mathew and
other NRC and contractor personnel, from January 25,1993, to February 12,1993, at the
Corporate Offices in Chesterbrook, PA, and at the plant site in Delta, PA. Mr. Mathew
discussed the fm' dings of the inspection with Mr. J. Cotton, Mr. W. Boyer, and other
members of your staff on February 12, 1993.
The purpose of the inspection was to determine whether the electrical distribution system
(EDS) es designed, installed, and configured at Peach Bottom 2 and 3 would be capable of
performing its intended safety functions.
The inspection was directed toward areas important to public health and safety. Areas
examined during this inspection are discussed in the enclosed inspection report. Within these
areas, the inspection consisted of selective examinations of design calculations, relevant
procedures and representative records, installed equipment, interviews with personnel, and
observations by the inspectors. The inspection team concluded that the electrical distribution
systems at Peach Bottom 2 and 3 were capable of performing their intended safety functions.
A number of observations and unresolved items, as detailed in the enclosed report, were also
identified.
Based upon the results of this inspection, one violation was identified as set fonh in the
Notice of Violation, enclosed herewith as Appendix A. The violation has been categorized
by severity level in accordana with the General Statement of Policy and Procedure for NRC
OFFICIAL RECORD COPY A:PBEDS.RM
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Mr. D. M. Smith
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Enforcement Actions,10 CFR Part 2, Appendix C. You are required to respond to the
Notice of Violation and, in preparing your response, you should follow the instruction in
Appendix A.
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One additional violation was identified involving lack of adequate documentation for the
equipment qualification (EQ) of core spray pump motors to operate at 106% of their rated
horsepower. Since you have updated the EQ files and have taken appropriate corrective
actions, this violation is not being cited in accordance with the NRC Enforcement Policy.
Therefore, no NOV has been enclosed and no response is required concerning this violation.
The team observed that the existing 4.16 kV bus transfer design was weak in that the existing
logic could allow unacceptable repeated bus transfers under certain limiting conditions. We
note that you have implemented administrative controls and design changes to address this
issue in the interim. You have committed to perform a thorough design review and take
appropriate corrective actions. If our understanding of your actions is incorrect, you are
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requested to inform this office as soon as possible.
We request that you provide us, in writing, within 60 days from the date of receipt of this
letter, a schedule for the resolution of unresolved issues identified in this report and any
actions taken or planned, to enhance the functionality of the EDS. The sections of the report
which address the specific findings are identified in the table titled, " Summary of Inspection
Findings."
Your cooperation with us in this matter is appreciated.
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Sincerely,
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Marvin W. Hodges, Director
Division of Reactor Safety
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Enclosures:
1. NRC Notice of Violation, Appendix A
2. NRC Combined Inspection Report No. 50-277/93-80 and 50-278/93-80
OFFICIAL RECORD COPY A:PBEDS.RM
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Mr. D. M. Smith
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cc w/encls:
J. Doering, Chairman, Nuclear Review Board
D. B. Miller, Vice President, Peach Bottom Atomic Power Station
G. Rainey, Vice President, Nuclear Senices Department
G. Cranston, General Manager, Nuclear Engineering Division
C. Schaefer, External Operations - Nuclear, Delmarva Power & Light Co.
K. P. Powers, Plant Manager, Peach Bottom Atomic Power Station
A. J. Wasong, Manager, Experience Assessment
G. A. Hunger, Jr., Manager, Licensing Section
J. W. Durham, Sr., Senior Vice President and Genera' Counsel
J. A. Isabella, Director, Generation Projects Department,
Atlantic Electric
B. W. Gorman, Manager, External Affairs
R. McIzan, Power Plant Siting, Nuclear Evaluations
D. Poulsen, Secretary of Harford County Council
R. Ochs, Maryland Safe Energy Coalition
J. H. Walter, Chief Engineer, Public Service Commission of Maryland
Public Document Room (PDR)
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
K. Abraham, PAO (2)
NRC Resident Inspector
Commonwealth of Pennsylvania
TMI - Alert (TMIA)
bec w/encls:
Region I Docket Room (with concurrences)
bec w/encls: (Via E-Mail)
V. McCree, OEDO
J. Shea, NRR
C. Miller, PDI-2, NRR
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OFFICIAL RECORD COPY