ML20195D031

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

ML20195D031
Person / Time
Site:	Seabrook
Issue date:	10/31/1998
From:	Diprofio W, Nardone P NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-98134, NUDOCS 9811170275
Download: ML20195D031 (5)

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North Atlantic Energy Service Corg oration

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• Seabrook, NIX 03874

, 4 $yn 1RIlklO (603) 474-9521 ,

The Northeast Utilitien System i

November 13,1998 l Docket No. 50-443 NYN-98134 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001 Seabrook Station Monthly Operatina Report Enclosed please find Monthly Operating Report 98-10. This report addresses the operating and shutdown experience relating to Seabrook Station Unit I for the month of October,1998 and is submitted in accordance with the requirements of Seabrook Station Technical Specification 6.8.1.5.

I Should you require further information regarding this matter, please contact l Mr. Terry L, Ilarpster, Director of Licensing Services, at (603) 773-7765. J Very truly yours, NORTH ATLANTIC ENERGY SERVICE CORP.

d)sAA; W. A.'DIPrFio '/

Station Director  !

CC: l II. J. Miller, NRC Region 1 Administrator J. T. Harrison, NRC Project Manager, Project Directorate 1-3 ,

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. R. K. Lorson, NRC Senior Resident Inspector s f l

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9811170275 981031 PDR ADOCK 05000443 R PM .

OPERATING DATA REPORT a .a *

• q DOCKET NO. 50-443 UNIT Seabrook 1 DATE November 1,1998 COMPLETED BY P.E. Nardone TELEPilONE (603) 773-7074 OPERATING STATUS

1. Unit Name: Seabrook Station Unit 1

2. Reporting Period: OCTOBER 1998

3. Licensed Thermal Power (Mwt): 3411

4. Nameplate Rating (Gross MWe): 1242

5. Design Electrical Rating (Net MWe): 1148

6. Maximum Dependable Capacity (Gross MWe): 12M

7. Maximum Dependabk 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 1

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

11. Ilours in Reporting Period 745.0 7296 0 105553.0

12. Number of flours Reactor Was Crincal 745.0 6243.1 62906.6 I

13. Reactor Reserve Shutdown 11ours 0.0 0.0 953.3

14. Hours Generator On-Line 745.0 6182.2 60413.6

15. Unit Reserye Shutdown flours 0.0 0.0 0.0

16. Gmss Thermal Energy Generated (MWH) 2539971 20990053 200448136

17. Gross Elec. Energy Generated (MW11) 897417 7410M4 70051553 l

18. Net Electrical Energy Generated (MWil) 864009 7132277 67329930

• 19. Unit Service Factor 100.0 84.7 82.1 l

• 20. Unit Availabihty Factor 100.0 84.7 82.1

• 21. Unit Capacity Factor (Using MDC Net) 100.2 84.4 80.0 l

• 22. Unit Capacity Factor (Using DER Net) 101.0 85.2 80.3

• 23. Unit Forced Outage Rate 0.0 15.3 6.9 l

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, Refueling. 03/27/99, 45 days and Duration of Each):

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

r

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

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

Updated Item 4 per NUREG-0020 in July 1998.

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• • . AVERAGE DAILY UNIT POWER LEVEL DOCKLTNO. 50 4 1

, UNIT Seabo 4 i DATE November I,1998 COMPLETED BY P.E. Nardone TELEPilONE (603) 773-7074 MONTil OCTOBER, 1998 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 1161 17 1160 2 1161 18 1160 3 1161 19 1160 4 1161 20 1160 5 1161 21 1160 6 1161 22 1160 7 1161 23 1160 8 1161 24 1160 9 1160 25 1160 10 1160 26 1160 11 1160 27 1160 12 1160 28 1160 13 1160 29 . 1160 14 1160 30 1147 15 1160 31 1160 16 1159 -

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 inegawatt.

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n UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-443 UNIT Seabrook I #

DATE November 1.1998 COMPLETED BY P.E. Nardone TELEPIIONE (603) 773-7074 MONT11 OCTOBER 1998 NO. DATE TYPE I DURATION REASON 2

METIIOD OF SIIVITING LICENSEE EVENT CAUSE & CORRECTIVE ACTION TO PREVEST (IIOURS) DOWN REACTOR

• REFORT # RECLRRENCE Page1ofI 0 A/F E **' ' " ' "'I

• E" '"*"

984)5 10/30/98 F 5 N/A Isop 3 Reactor Protection Temperature channel.

Operations procedures required a 4% RTP power reduction with Loops I,3 or 4 temperamre channels in a tripped condition. This action provides mrgin egainst an inad. ertent OPDT reactor trip due to the Upper Plenum Flow Anomaly.1he Plant renstned to full power operation that same day.

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 - Autonutic Scram D - Regulatory Restriction 4 - Contmued from previous nmnth E - Operator Trairung & License Examination 5 - Power Reduction (Duration = 0)

F - Administrative 9 - Other (Explain)

G - Operational Error (Explain)

II - Other (Explain) 3 of 4

_,,... REFUELING INFORMATION REQUEST

• . , c DOCKET NO. 50-443 UNIT Seabrmik1 DATE November 1.1998 COMPLETED BY P.E. Nardone TELEPilONE (603) 773 7074

l. Name of Facility: Seabrook Unit 1 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 J l

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:

l N/A

]

j. 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 th s are (b) in the spent fuel storage pool and (c) in the new fuel storage vault (a) 193 (b) 376 (c) O t

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

l' l Present licensed capacity: 1236 l 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:

l.

l 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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