ML20148K679

Monthly Operating Rept for May 1997 for Seabrook Station

ML20148K679
Person / Time
Site:	Seabrook
Issue date:	05/31/1997
From:	Feigenbaum T, Nardone P NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-97063, NUDOCS 9706180299
Download: ML20148K679 (5)

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ggg North Atlantic Energy Service Corporatie n U

fy Atlantic P.O. Box 300 Seahroet, Nii O3874 (603) 474-9T/21 The Northeast Utilities System June 13,1997 3 Docket No. 50443 NYN-97063 l}

f United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 l

h Seabrook Station Monthly Ooerating Report Enclosed please find Monthly Operating Report 97-05. This report addresses the operating and shutdown experience relating to Seabrook Station Unit I for the month of May,1997 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.11arpster, Director of Licensing Services, at (603) 773-7765.

Very truly yours, NORTII ATLANTIC ENERGY SERVICE CORP.

Ted C. Feigenbau[

Executive Vice President and Chief Nuclear Officer b

cc: 11. J. Miller, Region i Administrator A.W. De Agazio, NRC Project Manager, Seabrook Station h,f

/

W. J. Olsen, Senior Resident inspector. Seabrook Station i

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9706180299 970531 PDR ADOCK 050004 3 R

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. OPERATING DATA REPORT e =

t 1 DOCKET NO. 50-443 UNIT Seabrook1 l

DATE June 6,1997 l

COMPLETED BY P.E. Nardone TELEPilONE (603) 773-7074 OPERATLNG STATUS I

1. Umt Nune: Seabrook Station Unit 1

2. Reporting Period: MAY, 1997

3. Licensed Hermal Power (MWt): 3411

4. Nameplate Rating (Gross MWe): 1197

5. Design Electrical Rating (Net MWe): 1148

6. Maximum Dependabic Capacity (Gross MWe): 1204

7. Maximum Dependable Capacity (Net MWe): 115d

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

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

10. Reasons For Restrictions. If Any: Not Applicable j i

Ris Month Yr-to-Date Cumulative

11. Ilours in Reporting Period 744.0 3623.0 93120.0

12. Number ofIlours Reactor Was Critical 218.2 3097.2 52772.1

13. Reactor Reserve Shutdown flours 0.0 0.0 953.3

14. Ilours Geterator On-Line 216.0 3095.0 50395.8

15. Unit Reserve Shutdown llours 0.0 0.0 0.0

16. Gross 7hermal Energy Generated (MWil) 708891 10531723 166602933

17. Gross Elec. Energy Generated (MWII) 249830 3725321 58107288

18. Net Electrical Etergy Gerrrated (MWII) 240157 3584806 55836755

• 19. Unit Service Factor 29.0 85.4 82.5

• 20. Unit Availability Factor 29.0 85.4 82.5

• 21. Unit Capacity Factor (Using MDC Net) 27.9 85.4 80.0

• 22. Unit Capacity Factor (Using DER Net) 28.1 86.2 80.3

• 23. Unit Forced Outage Rate 0.0 0.0 5.1

24. Shutdowns Scheduled Over Nett 6 Months (Type, Date, Refueling. 05/10/97, 36 Days anal Duration of Each):

25. If Shut Down At Eixi Of Report Petiod. Estunated Date of 06/22/97 Startup:

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

Increased MDC values (Items 6 & 7) startmg 12/01/95, 1 of 4

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AVERAGE DAILY UNIT POWER LEVEL l

, DOCKET NO. 50-443 UNIT Seabrook 1 DATE June 6,1997 COMPLE7ED BY P.E. Nardone TELEP110NE (603) 773-7074 MONTil: MAY.1997 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 I163 17 0 2 1163 18 0 3 1163 19 0 4 1163 20 0 5 1163 21 0 6 1163 22 0 7 1163 23 0 8 1163 24 0 9 703 25 0 10 0 26 0 11 0 27 0 12 0 28 0 13 0 29 0 14 0 30 0 15 0 31 0 16 0 INSTRUCTIONS On this format, list the average daily unit pos 4r level in MWe-Net for each day in the reporting month. Compute to the nearest whole negawatt.

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- a UNIT SIIUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50453 UNTT Seabrook i DATE June 6,1997 COMPLETED BY P.E. Nardone TELEPIIONE (603) 773-7074 REPORT MONT11 MAY_1997 NO. DATE TYPE' DURATION REASON' MET 1IOD OF SIIUITING LICENSEE EVENT CAUSE & CORRECTIVE ACTION TO PREVENT (IIOURS DOWN REACTOR' REPORT # RECURRENCE PageI of1 9743 05/10/97 S 528.0 C 3 9748 refulM Ntart:

Intermediate Range excore nuclear instrumentation caused an automatic trip from 8% RTP when it was automatically enabled during planned shutdown. 'Ihe main generator breabr was opened as scheduled prior to the trip. See LER 9748 for information on root cause and corrective action.

I 2 3 F: Forced Reason: Metini:

S: Scheduled A - Equipmetu Failure (Explain) 1 - Manual B - Maintenance or Test 2 - Manual Scram C - Refueling 3 - Automatic Scram D - Regulatory Restriction 4 - Continued from previous month E - Operator Trairung & License Exammation 5 - Power Reduct on (Duration = 0)

F - Administranve 9 - Other (Explain)

G - Operational Error (Explains II - Other (Explain) 3 of 4

e REFUELING INFORMATION REQUEST DOCKET NO. 50-443 UNTT Seabrook 1 DATE June 6,1997 COMPLETED BY P.E. Nardone TELEPHONE (603) 773-7074

l. Name of Facility: Seabrook Unit 1

2. Scheduled date for next refueling shutdown: Refueling Outage 5, 05/10/97

3. Scheduled date for restart following refueling: Refueling Outage 5, 06/14/97 [ 36 days ]

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

Yes: LAR 97-02, Design Feature - Fuel Assembly Cladding (TAC M98842)

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

LAR 97-02 submitted on May 9,1997

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 (b) in the spent fuel storage pool and (c) in the new fuel storage vault (a) 0 (b) 561 (c) 4

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:

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 spen; 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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