ML20106G846

Monthly Operating Rept for Feb 1996 for Seabrook Station, Unit 1

ML20106G846
Person / Time
Site:	Seabrook
Issue date:	02/29/1996
From:	Diprofio W, Nardone P NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-96020, NUDOCS 9603190092
Download: ML20106G846 (5)

Text

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i North North Atlantic Energy Service Corporation 0

f; Atlaritic

$ , P.O. Box 300 Seahroet, Nii O3874 (603) 474-9521 The Northeast Utilities System March 12, 1996 Docket No. 50-443 NYN-96020 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 Seabrook Station Monthly Onerating Report Enclosed please find Monthly Operating Report %-02. This report addresses the operating and shutdown experience relating to Seabrook Station Unit i for the month of February,1996 and is submitted in accordance with the requirements of Seabrook Station Technical Specification 6.8.1.5.

Very truly yours, NORTH ATLANTIC ENERGY SERVICE CORP.

44 W. A. DiProfif V/

Station DirectoV cc: T. T. Martin, Region 1 Administrator A. W. De Agazio, NRC Project Manager, Seabrook Station J. B. Macdonald, Senior Resident Inspector, Seabrook Station i

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9603190092 960229 /1 f i PDR R

ADOCK 05000443 PDR f {/l r g

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. OPERATING DATA REPORT

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. DOCKET NO. 50443 1

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UNIT Seabrook1 1

DATE 3/11/96 l

COMPLETED BY P.E. Nardone TELEPHONE 603/474-9521 l Ext. 4074  !

OPERATING STATUS

1. Unit Name: Seabrook Station Unit i

2. Reporting Period: FEBRUARY 1996

3. Licensed Thermal Power (MWt): 3411

4. Nameplate Rating (Gross MWe): 1197 1

5. Design Electrical Rating (Net MWe): 1148 l

6. Maximum Dependable Capacity (Gross MWe): 1204

7. Maximum Dependable Capacity (Net MWe): 1158

8. If Changes Occur in Capacity Ratings (!tems Number 3 through 7) Since Last Not Ap;Jicable Report, Give Reasons:

9. Power Level To Which Restricted, if Any (Net MWe): l None i 1

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

11. Hours in Reporting Period 696.0 1440.0 82153.0 l

12. Number of Hours Reactor Was Critical 696.0 1400.9 42330.9

13. Reactor Reserve Shutdown Hours 0.0 0.0 953.3

14. Hours Generator On-Line 686.1 1346.7 39956.8 4

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0 ]

16. Gross Thermal Energy Generated (MWTI) 1729081 3948992 131041266

17. Gross Elec. Energy Generated (MWH) 597182 1378109 45523399

18. Net Electrical Energy Generated (MWH) 566355 1317111 43724867

• 19. Unit Service Factor 98.6 93.5 79.6

• 20. Unit Availability Factor 98.6 93.5 79.6

• 21. Unit Capacity Factor (Using MDC Net) 70.3 79.0 76.5

• 22. Unit Capacity Factor (Using DER Net) 70.9 79.7 76.7

• 23. Unit Forced Outage Rate 1.4 6.5 6.4

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

25. H Shut Down At End Of Report Period Esumated Date of Not Applicable Startup:

• NOTE: "Cumulauve" 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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, AVERAGE DAILY UNIT POWER LEVEL J

a 1 DOCKET NO. 50-443 l l

UNIT SeabrookI i I

DATE 3/11/%

COMPLETED BY P.E. Nardone TELEPHONE 603/474-0 0 I ,

Ext. 4T2 i MONTil: FEBRUARY,1996 l

DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL  ;

(MWe-Net) (MWe-Net) 1 594 17 1016 1

2 201 18 1014 l l

3 319 19 1015 j 4 402 20 1016 5 404 21 1019 6 407 22 1136 7 407 23 1158 8 402 24 1158 ,

i 9 412 25 1158  ;

10 448 26 1158 I l

11 572 27 1158 l l

12 781 28 1158 13 910 29 1157  !

l 14 990 30 15 1016 31 16 1013 INSTRUCTIONS l 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

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UNIT Seabrook I ,

DATE 3/1I/96 COMPLETED BY P.E. Nardone TELEPIIOM 603/474-9521 Ext. 4074 REPORT MON 11I FEBRUARY 1996 NO. DATE TYPE' DURATION REASON' METIIOD OF SilUITING LICENSEE EVENT CAUSE & CORRECTIVE ACTION TO PREVEAT (IIOURS) DOWN REACTOR' REPORT # RECURRENCE Page1 of1

1. 8 "I * ' " " * " * * *8 9642 02/01/96 F 9.9 A 9 N/A (GSC) system. Reduced power from 100% RTP and opened generator breaker. Reactor power held at 17%

RTP while cleaning GSC strainer. Strainer was found to be clogged with cupric oxide. Generator breaker rectosed on 02/02!%

Power was incrementally raised over the next three weeks as flow steadily improved as a result of oxygen addition and on-line chemical cleaning. GSC flow rates forced holds at 30%,40% and 88% RTP dunng that period..

The unit returned to full power operanon on 02/22/96 1 2 3 F: Forced Reason: Method:

S: Scheduled A - Equipment Failure (Explain) I - Manual B - Mamtenance or Test 2 - Manual Scram C - Refueling 3 - Automatic Scram D - Regulatory Restriction 4 - Connnued from previous month E - Operator Training & License Examination 5 - Power Reduction (Duration = 0)

F - Administrative 9 - Other (Explain)

G - Operational Error (Explain)

II - Other (Explain) 3 of 4

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,, _. REFUELING INFORMATION REQUEST  ;

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DOCKET NO. 50-443 UNIT Seabrook1 ,

DATE 3/11/96 i

COMPLETED BY P.E. Nardone i

TELEPHONE 603/474-9521

, Ext. 4074 i

1. Name of Facility: Seabrook Unit 1

2. Scheduled date for next refueling shutdown: Refueling Outage 5,06/07/97

3. Scheduled date for restart following refueling: Refueling Outage 5,07/15/97

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

N/A ,

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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, unreviewed design or performance analysis methods, significant changes in fuel design, new operating procedures:

N/A

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

(a)ln Core: 193 (b) 2RR

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 spent fuel pool assuming the present licensed capacity:

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

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

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