ML20149D375
| ML20149D375 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 09/16/1993 |
| From: | Durr J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Sylvia B NIAGARA MOHAWK POWER CORP. |
| Shared Package | |
| ML20149D380 | List: |
| References | |
| NUDOCS 9309210026 | |
| Download: ML20149D375 (3) | |
See also: IR 05000220/1993015
Text
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SEP 161993
Docket Nos. 50-220
50-410
Mr. B. Ralph Sylvia
Executive Vice President - Nuclear
Niagara Mohawk Power Corporation
301 Plainfield Road
Syracuse, New York 13212
Dear Mr. Sylvia:
SUBJECT:
NRC REGION I COMBINED INSPECTION REPORT NOS.
50-220/93-15 AND 50-410/93-15
This letter transmits the NRC Region I inspection report for the inspections conducted by
Mr. R. Bhatia of this office on July 19-23, 1993, at Niagara Mohawk, Salina Meadows
Office in Syracuse, New York, and at Nine Mile Point Units 1 and 2, Scriba, New York.
Mr. Bhatia discussed the findings of this inspection with members of your staff at the
conclusion of the inspection.
Areas examined during this inspection focused on assessing the offsite power supply sources
for Nine Mile Units 1 and 2 and your completed corrective actions to close the previous
Electrical Distribution Functional Inspection (EDSFI) outstanding items for Unit 1. The
inspection included the ongoing breaker replacement effort to further enhance the offsite
power supply sources for Unit 2, based on several concerns generated by the loss of power
events during the last two years. Within this scope, the inspection consisted of selective
examinations of design records, procedures and representative records, interviews with
personnel, and observations by the inspector.
Overall, the inspector concluded that the Nine Mile Point 1 and 2 offsite power sources are
reliable. We note that you have taken adequate steps to assure corrective and preventive
measures to enhance the reliability of the station offsite power supply sources. Further, you
are replacing the four less reliable 115 kV breakers in the Scriba substation during the 1993
fall refueling outage of Unit 2. In addition, the corrective actions for three previously
identified issues were found to be adequate and the items are closed. One other issue
reviewed pertaining to the emergency diesel generator transient loading analysis was found
partially complete; however, because of the low margin obtained in your calculation results,
you have taken
OFFICIAL RECORD COPY
A:NM9315. INS
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9309210026 930916 ^
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ADOCK 05000220
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SEP 161993
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Mr. B. Ralph Sylvia
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additional test data to confirm that your computer model assumptions are adequate.
Therefore, this item is updated in this report. Within the scope of this inspection, no
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violation or deviation was observed.
Your cooperation with us in this matter is appreciated.
Sincerely,
.
Jacque P. Durr, Chief
Engineering Branch
Division of Reactor Safety
Enclosure:
NRC Region I Combined Inspection Report Nos. 50-220/93-15 and
50-410/93-15
cc w/ encl:
C. Terry, Vice President - Nuclear Engineering
J. Perry, Vice President - Quality Assurance
Vice President - Nuclear Generation
K. Dahlberg, Unit 1 Plant Manager
M. McCormick, Unit 2 Plant Manager
D. Greene, Manager, Licensing
J. Warden, New York Consumer Protection Branch
G. Wilson, Senior Attorney
M. Wetterhahn, Winston and Strawn
Director, Energy & Water Division, Department of Public Service, State of New York
C. Donaldson, Esquire, Assistant Attorney General, New York Department of law
K. Abraham, PAO (2)
Public Document Room (PDR)
.
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
NRC Resident Inspector
State of New York, SLO Designee
,
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OFFICIAL RECORD COPY
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SEP 161993
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Mr. B. Ralph Sylvia
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bec w/ encl:
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Region I Docket Room (with concurrences)
C Cowgill, DRP
L. Nicholson, DRP
D. Weaver, DRP
W. Schmidt - Nine Mile Point
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V. McCree, OEDO
R. Capra, NRR
J. Menning, NRR
D. Brinkman, NRR
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09/7/93
09/7/93
09/ /93
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OFFICIAL RECORD COPY
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