ML20199E673

Monthly Operating Rept for Dec 1998 for Seabrook Station, Unit 1.With

ML20199E673
Person / Time
Site:	Seabrook
Issue date:	12/31/1998
From:	Diprofio W, Nardone P NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-99006, NUDOCS 9901210048
Download: ML20199E673 (5)

Text

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' North Atlantic Energy Service Corporation North i' o i w 3

• Seabrook, Nil 03874 Atlaintic (w3> 4:4m2i The Northeast Utilitien Sptem January 13,1999 i

Docket No. 50-443 l NYN-99006 1

United States Nuclear Regulatory Commission I Attention: Document Control Desk ,

Washington, DC 20555-0001 l Seabrook Station l Monthly Oneratine Report l

Enclosed please find Monthly Operating Report 98-12. This report addresses the operating and shutdown experience relating to Seabrook Station Unit 1 for the month of December,1998 and is submitted in accordance with the requirements of Seabrook Station Technical Specification 6.8.1.5.

Should you require further information regarding this matter, please contact Mr. Terry L. Harpster, Director of Licensing Services, at (603) 773-7765.

Very truly yours, NORTH ATLANTIC ENERGY SERVICE CORP.

I

! .A G W. A.DiProfio Station Director C l f ,

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cc:

i H. L Miller, NRC Region I Administrator J. T. Harrison, NRC Project Manager, Project Directorate 1-3

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R. K. Lorson, NRC Senior Resident Inspector r"p" 9901210048 981231 PDR ADOCK 05000443 R PDR !

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OPERATING DATA REPORT DOCKET NO. 50-443 UNIT Seabrooki DATE January 1,1999 COMPLETED BY P.E. Nardone TELEPl10NE W)3) 773 7074 OPERATING STATUS

1. Umt Name: Seabrook Station Umt 1

2. Reportmg Period: DECEMBER 1998

3. Licensed Thermal Power (MWt): 3411

4. Nameplate Ratmg (Gross MWe): 1242

5. Design Electrical Ratmg (Net MWe): 1148 A Matimum Dependable Capacity (Gross MWe): 1204

7. Maximum Dependable Capacity (Net MWe): 1158

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

9. Power level To Which Restricted, If Any (Net MWe): None

10. Reasons For Restrictions, if Any: Not Applicable This Month Yr-to-Date Cumulanvc

11. Ilours in Reportmg Period 744.0 8760 0 107017.0

12. Number of flours Reactor Was Critical 693.4 7399.5 M 062.9

13. Reactor Reserve Shutdown llours 0.0 3.0 953.3

14. Ilours Generator On-Line 685.1 7295.9 61527.3

15. Umt Reserve Shutdown flours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWil) 2311092 24702291 2M160374

17. Gross Elec. Energy Generated (MWit) 817N3 8717037 71357947

18. Net Electrical Energy Generated (MWif) 786018 8388432 68586086

• 19. Unit Service Factor 92.1 83.3 82.0

• 20. Unit Availability Factor 92.1 83.3 82.0

• 21. Umt Capacity Factor (Using MDC Net) 91.2 82.7 79 9

• 22. Unit Capacity Factor (Using DER Net) 92.0 83.4 80.2

• 23. Umt Forced Outage Rate 7.9 16.7 7.3

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, Refuelirw. 03/27/99, 45 days

and Duration of Each)

? 25. If Shut Down At End Of Report Period, Esumated Date of Not Applicable )

Startup:

{

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• NOTE: 'Curautative" values based on total hours startmp 8/19/90, date Regu:ar Full Power Operation began.

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

Updated item 4 per NUREG41020 in July 1998.

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-443 UNIT Seabrook i DATE January 1, IW)

COMPLETED BY P.E. Nardone TELEPHONE (603) 773 7074

[

MONTil DECEMBER,1998 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER F.EVEL (MWe-Net) (MWe-Net) 1 1161 17 1160 2 1161 18 1160 3 1161 19 1160 4 1161 20 1161 5 1161 21 1161 6  !!61 22 409 7 1162 23 0 8 1161 24 50 9 1161 25 %3 10 1861 26 1158 h 11 1160 27 1159 12 1160 28 1160 13 1160 29 11(4 14 1160 30 1160 15 1160 31 1159 16 1160 -

INSTRUCTIONS On this format, list the average daily unit power level in MWe-Net for each day in the reporting month. Compute 'o the nearest whole rners vatt.

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UNIT SliL'TDOWNS AND POWER REDUCTIONS '

DOCKLTNO. 50-443 UNIT Seabrook 1 DATE January I,1999 COMPLETED BY P.E. Nardone TELEPIIONE (ed)3) 773-7074 MONT3 DECEMBER 1998 NO. DATE TVPE' DURATION REASON 2 METIIOD OF EltUITING L NSEE EVENT CAUSE & CORRECTIVE ACTION TI) PREVENT (llOURS) DOWN REACTOR

• TT*N)RT # RECURRENCE Page1 ofI Automatic reactor trip on turbme trip.

984)7 12/22/98 F 58.9 B/A 3 98414 Generator protectise relaying inpped the main generator breaker when a pole disagreement was detected while opening 345 KV Switchyard Breaker 163.

De Umt returned to Mi power operation on 12/25/98.

See LER 984)l4 for information on root cause and corrective action.

t 4 2 3 F: Forced Reason: Metint:

S: Scheduled A - Equipment F-. iture (Explain) 1 - Manual B - Maintenance or Test 2 - Mamtal Scram C - Refueling 3 - Automatic Scram D - Regulatory Restriction 4 - Continued from previous nxmth E - Operator Training & License Examination 5 - Power Reduction (Duration = 0)

F - Administrative 9 - Other (Explain)

G - Operational Error (Explain) 11 - Other (Explain) 3 of 4

l . 1 i .  ? REFUELING INFORMATION REQUEST DOCKET NO. 50-443 UNIT Seabrook I

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DATE January 1,1999 COMPLETED BY P.E. Nardone TELEPilONE (603) 773-7074

1. Name of Facility: Seabrook Unit I l

2. Scheduled date for next refueling shutdown: Refueling Outage 6, 03/27/99 i l

3. Scheduled date for restart following refueling: Refueling Outage 6, 05/10/99 [ 45 days ]

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

N/A

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

N/A

6. Important licensing considerations associated with refueling, e.g., new or different fuel design or supplier, unrenewed design or performance analysis methods, significant changes in fuel design, new operating procedures ,

i N/A  :

7. The number of fuel assemblies (a) in the core (b) in the spent fuel storage pool and (c) in the new fuel storage vault (a) 193 (b) 376 (c) 36 Cycle 07 Fuel Receipt on going 1

8. The present licensed spent fuel pool storage capacity and the size of any increase in licensed storage capacity that has been i requested or is planned, in number of fuel assemblies:

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 core offload capability.

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

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