ML20057C220
| ML20057C220 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 09/22/1993 |
| From: | Wenzinger E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Danni Smith PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| Shared Package | |
| ML20057C221 | List: |
| References | |
| NUDOCS 9309280090 | |
| Download: ML20057C220 (3) | |
See also: IR 05000277/1993017
Text
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SEP 2 21993
Docket / License No. 50-277/DPR-44
-50-278/DPR-56
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Mr. D. M. Smith
Senior Vice President-Nuclear
Philadelphia Electric Company
Correspondence Control Desk
P. O. Box 195
Wayne, PA '19087-0195
Dear Mr. Smith:
SUBJECT:
COMBINED INSPECTION 50-277/93-17 AND 50-278/93-17
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This letter transmits the findings of the resident safety inspection conducted by Messrs. W. L.
Schmidt, B. S. Norris, F. P. Bonnett, and R. K. lorson from August 3 through September 13,
1993, at the Peach Bottom Atomic Power Station, Delta, Pennsylvania. The inspectors based
these findings on observation of activities, interviews, and document reviews. These findings
were discussed with Mr. G. Edwards of your staff.
The inspectors observed that your conduct of activities in support of the Unit 2 outage to install
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the reactor water level backfill modification were well managed and were handled
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professionally. However, the inspectors noted that weaknesses in isolation of the reactor vessel
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water level instrumentation during installation of the modification resulted in the generation of
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a false low level signal. This low level signal caused ECCS initiation signals and entry into a
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technical specification required shutdown condition at Unit 3.
In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter and
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its enclosures will be placed in the NRC Public Document Room.
The responses directed by this letter and the enclosed Notice are not subject to the clearance
procedures of the Office of Management and Budget as required by the Paperwork Reduction
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Act of 1980, Pub. L. No. 96.511.
We appreciate your cooperation.
Sincerely,
ORIGINAL SIGNED BY:
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E. Wenzinger, Chief
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Projects Branch 2
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Division of Reactor Projects
Enclosure: NRC Region I Combined Inspection Report 50-277/93-17 and 50-278/93-17
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9309280090 930922
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ADOCK 05000277
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Philadelphia Electric Company
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cc w/ encl:
J. Doering, Chairman, Nuclear Review Board
D. B. Miller, Vice President, Peach Bottom Atomic Power Station
G. Rainey, Vice President, Nuclear Services Department
G. Cranston, General Manager, Nuclear Engineering Division
C. Schaefer, External Operations-Nuclear, Delmarva Power & Light Co.
G. Edwards, Plant Manager, Peach Bottom Atomic Power Station
A. J. Wasong, Manager Experience Assessment, Peach Bottom Atomic Power Station
G. A. Hunger, Jr., Manager, Licensing Section
J. W. Durham, Sr., Senior Vice President and General Counsel
J. A. Isabella, Director, Generation Projects Department, Atlantic Electric
B. Gorman, Manager, External Affairs
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R. Mclean, Power Plant Siting, Nuclear Evaluations
D. Poulson, 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
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TMI - Alert (TMIA)
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Philadelphia Electric Company
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bec w/ encl:
Region I Docket Room (with concurrences)
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bec w/ encl: (Via E-Mail)
V. McCree, OEDO
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R. Clark, Project Manager, NRR
M. Boyle, Acting PDI-2, NRR
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CONCURRENCES:
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OFFICIAL RECORD COPY
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