ML20057E057

Confirms Dates of 931018-22 & 1101-05 for Partial Edfsi to Determine Capability of Performing Intended Functions During All Plant Operating & Accident Conditions

ML20057E057
Person / Time
Site:	Millstone
Issue date:	09/27/1993
From:	Durr J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:	Opeka J NORTHEAST NUCLEAR ENERGY CO.
References
NUDOCS 9310070205
Download: ML20057E057 (4)

Text

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SEP 2 71933 l

i Docket No. 50-245 Mr. John F. Opeka Executive Vice President - Nuclear Northeast Nuclear Energy Company P. O. Box 270 Hartford, Connecticut 06141-0270

SUBJECT:

ELECTRICAL DISTRIBUTION SYSTEM FUNCTIONAL INSPECTION (EDSFI) FOR MILLSTONE UNIT 3 This letter confirms the dates of October 18-22,1993, and November 1-5, 1993, for a partial EDSFI at Millstone, Unit 3. A partial EDSFI is being conducted because of a self-conducted l

EDSFI completed by Northeast Utilities in February 1992. Our plan for this inspection was discussed with your staff during a telephone call between Mr. T. Cleary of your organization l

and Mr. Aniello Della Greca of the NRC Region I office. The inspection will take place in Berlin, Connecticut.

A management entrance meeting is scheduled for 1:00 p.m. on October 18,1993, at the corporate offices in Berlin, Connecticut. The management exit meeting is tentatively scheduled for 1:00 p.m. on November 5,1993, also at the corporate offices.

i The purpose of this inspection is to determine whether the electrical distribudon system (EDS) at Millstone Unit 3, as designed, installed, and configured, is capable of performing its intended functions during all plant operating and accident conditions. For this purpose, the NRC will review the scope and results of your self-conducted EDSFI and perform an independent evaluation of select electrical system attributes.

To support the scope of the inspection, we request that you provide us at least two copies of the documents identified in the enclosure by October 7,1993, to be picked up by Mr. Aniello Della Greca at the inspection site. We also request that Northeast Utilities be prepared to provide to the inspection team, on October 18,1993, following the entrance l

meeting, a brief presentation addressing the design of the station electrical distribution system and associated support systems, the scope and results of the self-conducted EDSFI and j

schedules to address findings.

G:MLEDSFI.LTR OFFICIAL' RECORD COPY 060050 9310070205 930927 Ei PDR ADOCK 05000245 k3 ap ppg g ji

SEP 2 7199'3 Mr. John F. Opeka 2

Your cooperation with us during this inspection will be appreciated. Should you have any l

questions regarding the scope of this inspection, you can contact Mr. Aniello Della Greca at 215-337-5046 or Mr. William Ruland at 215-337-5376.

Sincerely, Jacque P. Durr, Chief Engineering Branch Division of Reactor Safety

Enclosure:

Millstone Unit 3 EDSFI Document List i

cc w/ encl:

W. D. Romberg, Vice President - Nuclear, Operations Services S. E. Scace, Vice President, Millstone Station J. P. Stetz, Vice President, Haddam Neck Plant H. F. Haynes, Nuclear Unit Director R. M. Kacich, Director, Nuclear Licensing J. Solymossy, Director, Nuclear Quality and Assessment Services l

Gerald Garfield, Esquire j

Nicholas Reynolds, Esquire Public Document Room (PDR)

Iscal Public Document Room (LPDR)

Nuclear Safety Information Center (NSIC)

NRC Resident Inspector State of Connecticut SLO j

i i

G:MLEDSFI.LTR OFFICIAL RECORD COPY

l SEP 2 71993 Mr. John F. Opeka 3

bec w/ encl:

Region I Docket Room (with concurrences) l bec w/enci (VIA E-MAIL):

f J. Stolz, NRR/PD I-4 l

V. McCree, OEDO D. Jaffe, PM, NRR J. Andersen, NRR l

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RI:DRS RI:DRS R: RS DellaGreca/geb i

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,/ 93 G;MLEDSFI.LTR OFFICIAL RECORD COPY

j MILLSTONE UNIT 3 i

l Item No.

Documents i

l 1.

Self-conducted EDSFI report.

2.

Questions and answers generated during the self-conducted EDSFI

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3.

Current status of your corrective actions resulting from the EDSFI findings.

l 4.

Station one-line diagrams for ac and de systems.

5.

P& ids of diesel generator support systems such as fuel, cooling water, lube oil, and air.

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6.

Control schematic winng diagrams for major ac supply breakers.

7.

Voltage regulation studies for ac and de systems.

8.

Load studies of ac and de emergency buses, both transient and steady state.

9.

Diesel generator surveillance test documents for the last two tests.

t 10.

Capacity and surveillance test documents of safety-related batteries (last two).

11.

Protective and degraded grid relay setpoint control and calibration procedures 12.

Root cause analysis and corrective action program procedures.

Please arrange documents according to the item number given above to facilitate locating specific documents by the inspection team members.

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