ML20206N175

Monthly Operating Rept for Apr 1999 for Seabrook Station, Unit 1.With 990506 Ltr

ML20206N175
Person / Time
Site:	Seabrook
Issue date:	04/30/1999
From:	Diprofio W, Nardone P NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-99052, NUDOCS 9905170159
Download: ML20206N175 (5)

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North Atlantic Energy Service Corporation 1

a North v.o. nex am sea""' N" o3874 i

i7 Atlantic (603) 474-9321 The Northeast Utilitien Sptem 1 I

May 6,1999 j i

Docket No. 54143 NYN-99052 United States Nuclear Regulatory Commission Attention: Document Control Desk l Washington, DC 20555-0001 Seabrook Station April 1999 Monthly Operating Report Enclosed please find Monthly Operating Report 99-04. This report addresses the operating and shutdown experience relating to Seabrook Station Unit I for the month of April,1999 and is  ;

submitted in accordance with the requirements of Seabrook Station Technical Specification l 6.8.1.5.

Should you require further information regarding this matter, please contact Mr. James M. Peschel, Regulatory Compliance Manager, at (603) 773-7194.

Very truly yours, NORTH ATLANTIC ENERGY SERVICE CORP.

bELLA 'I W. A. DiProlio[

Station Director cc:

H. J. Miller, NRC Region I Administrator

}

J. T Harrison, NRC Project Manager, Project Directorate 1-2 R. K. Lorson, NRC Senior Resident Inspector 9905170159 990430 PDR

'G'G R ADOCK 05000443 PDR

OPERATING DATA REPORT DOCKET NO. 50-443 UNIT Seabrook 1 DATE May 1,1999 COMPLETED BY P.E. Nardone TELEPIIONE (603) 773-7074 OPERATING STATUS

1. Unit Name: Seabrook Station Unit 1

2. Reporting Period: APRIL 1999

3. Licensed Thermal Power (MWt): 3411

4. Nameplate Rating (Gross MWe): 1242

5. Design Electrical Ranng (Net MWe): 1148

6. Maximum 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 Cumulative i1. Ilours in Reporting Period 719.0 2879.0 1008 % .0

12. Number of flours Reactor Was Critical 0.0 2044.7 66107.6

13. Reactor Reserve Shutdown flours 0.0 0.0 953.3

14. Ilours Generator On-Line 0.0 2040.4 63567.7

15. Unit Reserve Shutdown flours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWil) 0.0 6908315 211068688

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17. Gross Elec. Energy Generated (MWil) 0.0 2444884 73802831  ;

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18. Net Electrical Energy Generated (MWil) 0.0 2352764 70938849 l

• 19. Urut Service Factor 0.0 70.9 81.6

• 20. Unit Availability Factor 0.0 70.9 81.6

• 21. Unit Capacity Factor (Using MDC Net) 0.0 70.6 79.5

• 22. Umt Capacity Factor (Using DER Net) 0.0 71.2 79.9

• 23. Unit Forced Outage Rate 0.0 0.0 7.1

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, Refuel'ug,03/27/99, 45 dap j and Duration of Each): 1

25. If Shut Down At End Of Report Period, Estimated Date of Restart. 05/11/99 Startup:

1

• NOTE: " Cumulative" values based on total hours starting 8/19/90, date Regular Full Power Operaton began. l increased MDC values (Itens 6 & 7) starting 12/01/95.

Updated item 4 per NUREG4020 in July 1998.

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-443 UNIT Seabrook i DATE May 1,1999 COMPLETED BY P.E. Nardone TELEPilONE (603) 773-7074 MONTH APRIL, 1999 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 0 17 0 2 0 18 0 3 0 19 0 4 0 20 0 5 0 21 0 6 0 22 0 7 0 23 0 8 0 24 0 9 0 25 0 10 0 26 0 11 0 27 0 12 0 28 0

+

13 0 29 0 14 0 30 0 15 0 -

16 0 -

INSTRUCTIONS On this fornn* list the average da ly unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

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','. REFUELING INFORMATION REQUEST O DOCKET NO. 50 443 UNIT Seabrook i DATE May 1.1999 COMPLETED BY P.E. Nardone TELEPHONE (603) 773-7074 1, Name of Facility: Seabrook Unit 1

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

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

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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, 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) 193 ~(b) 456 (c) 0

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 i 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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