ML20133M622

Monthly Operating Rept for Dec 1996 for Seabrook Station Unit 1

ML20133M622
Person / Time
Site:	Seabrook
Issue date:	12/31/1996
From:	Diprofio W, Nardone P NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-97002, NUDOCS 9701220458
Download: ML20133M622 (5)

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i North North Atlantic Energy Service Corporation P.O. Box 300

't,y Atlantic 0

Seehroot Nii O3874 (603) 474-9521 The Northeast Utilities System January 10,1997 Docket No. 50-443 NYN-97002 United States Nuclear Regulatory Commission Attention: Document Control Desk Wasitington, DC 20555 Seabrook Station l

Monthlv Oueratino Renort  !

I Enclosed please find Monthly Operaung Report 96-12. This report addresses the operating and  !

shutdown experience relating to Seabroo'. Station Unit I for the month of December,1996 and is submitted in accordance with the requirements of Seabrook Station Technical Specification 6.8.1.5.

Very truly yours, l NORTH ATLANTIC ENERGY SERVICE CORP.

AMA/d Willia'm A. DiProfd l Station Director cc: H.J. Miller, Region I Administrator A.W. De Agazio, NRC Project Manager, Seabrook Station J.B. Macdonald, Senior Resident Inspector, Seabrook Station pk C

9701220458 961231 PDR ADOCK 05000443  !

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OPERATING DATA REPORT DOCKET NO. 50-443 UNIT Seabrook 1 DATE January 2.1996 1 l l COMPLETED BY P.E. Nardone TELEPIlONE (603) 773 7074 OfERATING STATUS

1. Unit Name: Seabrook Station Umt 1

, 2. Reporting Period: DECEMBER,1996 i

l 3. Licensed Thermal Power (MWt): 3411

4. Nameplate Ratmg (Gross MWe): 1197

5. Design Electrical Rating (Net MWe): 1148

, 6. Maximum Dependable Capacity (Gross MWe): 1204 l

7. Maumum Dependable Capacity (Net MWe): 1158

. 8. If Changes Occur in Capacity Ratings (Items Number 3 through 7) Smce Last Not Applicable Report, Give Reasons:

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9. Power Level To Which Restricted, if Any (Net MWe): None

10. Reasons For Restrictions, If Any: Mot Applicable This Month Yr-to-Date Cumulative i1. Hours in Reporting Period 744.0 8784.0 89497.0

12. Number of Ilours Reactor Was Critical 744.0 8744.9 4 % 74.9

13. Reactor Reserve Shutdown Hours 0.0 0.0 953.3

14. Ilours Generator On-Line 744.0 8690.7 47300.8

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 2530869 28978937 156071210

( 17. Gross Elec. Energy Generated (MWH) 8 % 570 10236676 54381 % 7 l

18. Net Electrical Energy Generated (MWH) 862650 9844193 52251949 l

( '19. Unit Service Factor 100.0 98.9 82.3

• 20. Unit Availability Factor 100.0 98.9 82.3

• 21. Unit Capacity Factor (Using MDC Net) 100.1  %.8 79.7 l

j *22. Unit Capacity Factor (Using DER Net) 101.0 97.6 79,9 l

• 23. Umt Forced Outage Reic 0.0 1.1 5.5

24. Shutdowns Scheduled Over Next 6 Months (Type. Date, Refuehng, 05/10/97, 38 Days and Duration of Each):

25. If Shut Down At End Of Report Period, Estimated Date of Not Applicable Startup:

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• NOTE: " Cumulative" values based on total twurs starting 8/19/90, date Regular Full Power Operation began.

Increased MDC values (Items 6 & 7) starting 12/01/95.

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.' , AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-443 UNIT SeabrookI

DATE January 2,1996 COMPLETED BY P.E. Nardone TELEPI10NE (603) 773-7074 MONTil

DECEMBER,1996 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) l 1 1164 17 1163 l

. 2 1164 18 1164 i

l 3 1163 19 1164 4 1163 20 1162 5 1163 21 1162 6 1163 22 1162 f 7 1163 23 1162

( 8 1163 24 1163 9 1163 25 1162 10 1163 26 1162 11 1163 27 1162 12 1069 28 1162 13 1159 29 1163 l

14 1162 30 l 1162 15 1162 31 1161 16  !!62 i

l INSTRUCTIONS I

On this format, hst the average daily umt power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

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UNIT SIIUTDOWNS AND POWER REDUCTIONS .

DOCKET NO. 50-443 ,

UNE Seabrook 1 DATE January 2,1996 COMPLETED BY P.E. Nardone TELEPIIONE (603) 773-7074 REPORT MON 11I DECEMBER 1996 2

NO. DATE TYPE' DURATION REASON METIIOD OF SIIUITING LICENSEE EVENT CAUSE & CORRECTIVE ACTION TO PREVENT (IIOURS) DOWN REACTOR' REPORT # RECURRENCE PageI ofI 964M 12/12/96 F 24.0 A 9 N/A A high Dp signal on "C" CW trave mg screen irdnated automatic closure of associated CW pump discharge valve.

Operations tripped "C" CW pump amt reduced power to 86% RTP because of CW Delta-T discharge limits.

The hi Dp signal was determined to be an mstrumentation problem (erroneous indication).

The plant returned to full power operation 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> later.

i 2 3 F: Forced Reason: Met!xxt:

S: Scheduled A - Equipment Friture (Explam) 1 - Manual B - Maintenance or Test 2 - Manual Scram C - Refueling 3 - Automatic Scram D - Regulatory Restriction 4 - Continued from previous month E - Operator Traimng & License Examination 5 - Power Reducten (Duiation = 0)

F - Administrative 9 - Other (Explain)

G - Operational Error (Explain)

II - Other (Explain) 3 of 4

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l REFUELING INFORMATION REQUEST DOCKET NO. 50-443 UNIT Seabrook 1 DATE January 2.1996 COMPLETED BY P.E. Nardone TELEPHONE (603) 773-7074

1. Name of Facility: Seabrook Unit 1

2. Scheduled date for next refueling shutdown: Refueling Outage 5, 05/10/97 j 3. Scheduled date for restart following refueling: Refueling Outage 5, 06/16/97 [ 38 days: based on RO 04 ] )

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

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N/A  !

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

l N/A

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 operating procedures:

N/A

7. The number of fuel assemblies (a) in the core and (b) in the spent fuel storage pool:

(a) In Core: 193 (b) 288 l 8. The present licensed spent fuel pool storage capacity and the size of any increase in licensed storage capacity that has been I l requested or is planned, in number of fuel assemblies:

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

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

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

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

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