ML20198N702

Monthly Operating Rept for Dec 1997 for Seabrook Station, Unit 1

ML20198N702
Person / Time
Site:	Seabrook
Issue date:	12/31/1997
From:	Diprofio W, Nardone P NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-98004, NUDOCS 9801210177
Download: ML20198N702 (5)

Text

I E..  :,

Norti,' Nonh Atlantic Energy Senice Corporation P.O. Box 300

'n fs . Atlantic-Seahreet. Nii O3874

-(603) 474-9521 The Northeast Utilities System January 9,1998 Docket No. 50443 NYN-98004 United States Nuclear Regulatory Commission Attention: Document Control Desk

-Washington, DC 20555 Seabrook Station -

Monthly Onerating Renort Enclosed- please find Monthly Operating Report 97-12. This report addresses the operating and shutdown experience relating to Seabrook Station Unit I for the month of Dc: ember,1997 and is submitted in accordance with the requirements of Seabrook Station Technical Specification 6.8.1.5.

Should you requae further information regarding this matter, please contact Mr. Terry L. Harpster, Director of L'.ensing Services, at (603) 775-7765.

Very truly yours, NORTH ATLANTIC ENERGY SERVICE CORP.

d}64:Ud William h. DiPrg60 Station Director cc: J. Miller, Region 1 Auministrator-C. W.' Smith, NRC Project Manager, Scaorook Station R. K. Lorson, Senior Resident inspector, Seabrook Station e-l';

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'9901210177 971231 I PDR ADOCK 05000443 R PDR: ,

OPERATING DATA REPORT

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• DOCKET NO. 50443 ONIT Seabrook 1

• . DATE January 5,1998 COMPLETED BY P.E. Nardone TELEPl!ONE (603) 773-7074 OPEIULTLWSTAIL'S

1. Unit hame: Seabrook Station Unit 1

2. Reportmg Pernid: DECEMBER 1997

3. Licensed Thermal Power (MWt): 3411

4. Nameplate Raung (Grosa MWe): 1197

5. Design Electrical Ratmg (Net MWe): 1148

6. Maumum Dependable Capacity (Gross MWe): 12N

7. Maumum Depeislable Capacity (Net MWe): 1158 R. If Changes Occur m Capacity Ratmgs (Items N :mber 3 thnmth 7) Smec Last Not Apphcrble Report Give Reasons:

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

10. Reasons For Restrictions. If Any: Not Apphcable his Month Yr-ti>Date Cumulative

11. Ilours in Reportmg Period 744.0 8760.0 98257.0

12. Number of Ilours Reactor Was Critical 113.9 6988.6 56663,5

13. Reactor Rewrve Shindown thiurs 00 0.0 953.3

14. Ilours Generator On Line 112.9 6930 6 54231.4

15. Umt Reserve Shutdown llours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWil) 377665 23386872 17W58083 17 Grms Elec. Energy Generated (MWil) 13310 8258M2 626KM19

18. Net Electrical Energy Generated (MWil) 127789 7945705 S0197653

'19. Umt Service Factor 15.2 79.1 81.8

• 20. Unit Availabihty Factor 15.2 79 1 81.8

• 21. Unit Capacity Factor (Using MDC Net) 14 8  %.3 79.5

• 22. Unit capacity Factor (Using DER Net) 15 0 79.0 79.8

'23. Unit ForceJ Outage Rate 84.8 8.3 5.9

24. Shutdowns Scheduled Over Net 6 Months (Type, Date, None Scheduled and Duration of Each):

25. J Shut Dow ti At End Of Report Penal, Estmuted Date of January 14,1998 Startup:

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

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

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i, , . . AVERAGE DAl' -V UNIT POWER LEVEL DOCKET NO. $0-443 UNTT SeaNwk 1 DATE January $,1998 COMPLETED BY P.E. Nardone TELEPilONE (603) 773-7074 MONTil DECILIBER 1997 DAY AVER 4GE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1  !!58 17 0 2 1158 18 0 3 1158 19 0

.4 1159 20 0 5 691 21 0 6 0 22 0 7 0 23 0 8 0 24 0 9 0 25 0 10 0 26 0 q'

11 0 27 0 12 0 28 0 13 0 29 0 14 0 30 0 15 0 31 0 S

16 0 i

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 SIIUTDOWNS AND POWER REDUCTIONS -

DOCKET NO. 50-443 ,,.

t* NIT Seatumk 1 -

DATE January 5.1998 ,

COMPLETED BY P.E. Narame TELErtlONE (603) 773-7074.

MONTII DECEVBER, IW7 NO. DATE TYPE' DURATION REASON' SIETIIOD OF SIILTTING DOM?? LICENSEE E%DT CAUSE & CORRerITVE ACTION TO PRE %DT GIOURS) REALTOR' REPORT # RECURRENCE Page1 of1 9742 12/0$!97 l' 631.1 A 1 None for RC.VR9 Emered Actxm Statemem for Tech Spec 3 6.2.1 armt 9741R for CBA imtwed a plane he w Mode 5. Through wall meepage was kjentified in a spwd piece connectmg rehef valve RC-V89 to a 12 inch suctxm line for Tram B Resmhclllent Remmel guimp. The fadure mechanism was chionde induced transgratular strets corroske crackmg caused t=y a woven ckd fire wrap secured with duct tape. The spiud piece and aswciated fittmgs were replaced. A walkdown of popmg was performed to identify simdar conditmms that lead to the failure of the spud pece. None were fourmi.

Comrnenced a plant restart from Mode 5 on 12/15/W.

Emered Actum Statement for Tech Spec 3.0.3 en 12/16A7 for lud trams of Control Buildmg Air (CBA) iruyerative and initiated a plant camklown frmn Mode

4. Train A CBA A/C umt tryped with Train B CBA removed frorn service for mamtenance. As of 12/31/97, both trains of CBA remam imperaNe. Sea LER 97411R for mformation on root cause al corrective actim.

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F: Forced Reason- Metixsl:

S: Scheduled A - Equrpment Failure (Explain) 1 - Manual B - Maintenaree or Test 2 - Manual Scram C - Refuehng 3 - Aufmnatic Scram D . Regulatory Resenction 4 - Continued from prerknis immth E - Operator Training & License Examinathm 5 - Power Reducthm (Durathm = 0)

F - Admimstrative 9 - Other (Explain) l G - Operational Error (Explain)

[ II - Other (Explain) a.

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. ,  ; REFUELING INFORMATION REQUEST

• DOCKET NO. 50-443 UNIT SeaNook i DATE Janry 5.1998 COMPLSTED BY P.E. Nardone TELE *llONE (603) 773-7074

1. Name of 1:acility: Seabrook Unit i

2. Scheduled date for next refueling shutdown: Refueling Outage 6, 03/06/99 J. Scheduled date for restart following refueling: Refueling Outage 6. 04/14/99 [ 40 days ]

4. Will refueling or reumption of operation thereafter require a technical speci'ication change or other license amendment?

N/A

5. S-hedule 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 supp!!ct, unreviewed design or performance analysis methods, significant changes in fuel design, new operating procedures:

N/A

7. The numbat 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) 372 (c) 4

8. The present licensed spent tuel pool storage capacity and tha size of any increase in licensed storage capacity that has been requested or is planned, in num%r of fuel assemblies:

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

9. The projected date of the last refueling that can be dircharged to the spent fuel x>ol 1 assuming the present licensed capacity: )

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

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

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