ML20059M763

Monthly Operating Rept for Oct 1993 for Seabrook Station Unit 1

ML20059M763
Person / Time
Site:	Seabrook
Issue date:	10/31/1993
From:	Feigenbaum T, Nardone P NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-93157, NUDOCS 9311190301
Download: ML20059M763 (5)

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Seab k, NH 03874 Telephone (603)474 9521 lC

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1@ Facsimile (603)474 2987 Energy Service Corporation Ted c. Felgenbau'm Senior Vice President and Chief Nuclear Officer NYN- 93157 November 15,1993 United States Nuclear Regulatory Commission Washington, DC 20555 Attention: Document Control Desk

References:

Facility Operating License NPF-86, Docket No. 50-443  ;

Subject; Monthly Operating Report Gentlemen:

Enclosed please find Monthly Operating Report 93-10. This report addresses the operating and shutdown experience relating to Seabrook Station Unit 1 for the month of October,1993 and is submitted in accordance with the requirements of Seabrook Station Technical Specification 6:8.T.S.

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Very ly yours, j Gy'GAIA/S Ted C. Feigeitra n m Enclosure cc: Mr. Thomas T. Martin F.egional Administrator United States Nuclear Regulatory Commission Region i 475 Allendale Road King of Prussia, PA 19406 l

t Mr. Albert W. De Agar.io, Sr. Project Manager Project Directorate 1-4 Division of Reactor Projects U.S. Nuclear Regulatory Commission Washington, DC 20555 Mr. Noel Dudley

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NRC Senior Resident Inspector P.O. Box 1149 Seabrook, Nil 03874 1

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443 a member f the Northeast (Jtilities system 7' I

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- OPERATING DATA REPORT DOCKET NO. 50_-443 UNIT Seabrook 1 DATE 11/15/93 COMPLETED BY P. E. Nardone TELEPHONE (603) 474-9521 Ext. 4074 OPERATING STATUS

1. Unit Name: Seabrook Station Unit 1 -

2. Reporting Period: OCTOBER 1993

3. Licensed Thermal Power (MWt): 3411 *

4. Nameplate Rating (Gross MWe): 1197

5. Design Electrical Rating (Net MWe): 1148

6. Maximum Dependable Capacity (Gross MWe): 1200

7. Maximum Dependable Capacity (Net MWe): 1150

8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7)

Since Last Report, Give Reasons: - Not Acolicable

9. Power Level To Which Restricted, If Any: None 7

10. Reasons For Restrictions, If Any: Not Acolicable -'I This Month Vr.-to-Date Cumulative ,

11. Hours In Reporting Period 745.0 7296.0 61729 0 -

i 12, riumber Of Hours Reactor Was Critical 623.7 -6739.7 26243 1 t

13. Reactor ReserveShutdown Hours 0.0 0.0 .,_ 953.3-

14. Hours Generator On-Line 595 5 6632.3 24213.2

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0-

< 16. Gross Thermal Energy Generated (MWH)- 1930953 22345939 78869496

17. Gross Elec. Energy Generated (MWH) 672601 7831634 27393272

18. Net Electrical Energy Generated (MWH) 645800' 7532175 26308988

• 19. Unit Service Factor 79.9' 90.9 81.4

• 20. Unit Availability Factor 79 9 90.9 81.4

• 21. Unit Capacity Factor (Using MDC Net)- 75.4 89.8 78.3 1

• 22, Unit Capacity Factor (Using DER Net) 75.5 89.9 ~78.4

• 23. Unit Forced ~0utage Rate 20.1 9.1 6.6

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

None Scheduled

25. If Shut Down At End Of Report Period. Estimated Date Of Startup: Not Acolicable

• NOTE: " Cumulative" values based on total hours starting 08/19/90, date Regular Full Power Operation began.

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AVERAGE DAILY UNIT POWER LEVEL .

DOCKETNO..@-443 UNIT Seabrook 1 DATE 11/15/93

• COMPLETED BY P. E. Nardone TELEPHONE (603) 474-9521  ;

Ext. 4074 a

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MONTH OCTOBER. 1993 6; .

DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net),

1 0 17 1152 2 0 18 1152 3 0 19 1151 ,

4 0 20 1152 .:;

'S- 0 21 1152

6. 0 22 1152 .

i 7 282 23 . 1152  ;

8 479 24 1153' 9 769 25 1153

-l 10 1149 26 1152 11 1148 27 1152 ,

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1148 28 1152 i

13 1151 29 1152-14 '1151 30 1152 15 1151 31 1152 16 1151 INSTRUCTIONS On this format, list the average daily unit power level in MWe-Net for each day in the reporting  ;

month. Compute to the nearest whole megawatt.

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-443 -

UNIT Seabrook 1 DATE 11/15/93 REPORT MONTH OCTOBER. 1993 COMPLETED BY P. E. Nardone l TELEPHONE (603) 474-9521 Ext. 4074 2

f= No. Date Type Duration Reason' Method of Licensee Cause & Corrective (Hours) Shutting Event Action to Down Reactor 3 Report # Prevent Recurrence Page l of I' 05 10/01/93 F_ 149.5 A 4 93-018 Automatic reactor trip as a result of a ' RCP undervoltage trip signal. This was caused by arcing of the exciter field brushes which resulted in a degrading field condition on the main.

generator. See LER 93-018 for information on root -

cause and corrective action.

I 2 3 F: Forced Reason: Method:

S: . Scheduled A-Equipment Failure-(Explain) 1-Manual B-Maintenance or Test 2-Manual Scram C-Refueling 3-Automatic Scram D-Regulatory Restriction. 4-Continued from E-Operator 1 raining & License Examination previous month F-Administrative 5-Power Reduction G-Operational Error (Explaio) (Duration - 0)

H-Other-(Explain): 9-Other (Explain) 3 of 4

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DOCKET NO. 50-443 UNIT Seabrook 1 DATE 11/15/93 COMPLETED BY P. E1 Nardone' TELEPHONE (603)~474-9521 Ext. 4074 REFUEllNG INFORMATION REQUEST

1. Name of facility; Seabrook Unit 1  ;

2. Scheduled date for next refueling shutdown: ,

Refueling Outage 3. 03/26/94

3. Scheduled date for restart following refueling:

Refueling Outage 3, 05/20/94 t

4. Will refueling or resumption of operation thereafter require a technical specification change or other license amendment? j f

No

5. Schedul2d date(s) for submitting licensing action and supporting information:

N/A

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6. Important licensing considerations associated with refueling, e.g. new or different fuel design or-  ;

supplier unreviewed design or performance analysis methods, significant changes in fuel design, new 6 operating procedures: j None.  ;

. 7. The number of fuel assemblies (a) in the core and (b) in the spent fuel storage. pool': I (a) In Core: 193 (b) 136

8. The present licensed spent fuel pool storage capacity'and theaize of any-increase in licensed storage capacity that has been requested or is planned, in number o' fuel assemblies:

Present licensed capacity: 1236' No increase in storage capacity requested or planned.

9 The prcjected date.of the last refueling that can be discharged to the spent fuel pool assuming the present licensed capacity.:

' Licensed capacity of 1236 fuel asseinblies based-on two annual and twelve' eighteen-month refuelings with full-core offload capability. ,

The current licensed capacity is adequate until at least the year 2010. j i

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