ML20236M359

Monthly Operating Rept for June 1998 for Seabrook Station, Unit 1

ML20236M359
Person / Time
Site:	Seabrook
Issue date:	06/30/1998
From:	Diprofio W, Nardone P NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-98089, NUDOCS 9807140038
Download: ML20236M359 (5)

Text

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North _~ North Atlantic Energy Service Corporation P.O. Box 300

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(603) 474-9521 The Northeast Utilities System July 9,1998 Docket No. 50-443 NYN-98089 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001 Seabrook Station Monthly Operating Reoort Enclosed please find Monthly Operating Report 98-06. This report addresses the operating and shutdown experience relating to Seabrook Station Unit I for the month of June,1998 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. Harpster, Director of Licensing Services, at (603) 773-7765.

Very truly yours, NORTH ATLANTIC ENERGY SERVICE CORP.

M;A&-

fA. DiProfio [

Station Director' t-l j_ CC:

l H. J. Miller, NRC Region I Administrator J. T. Harrison, NRC Project Manager, Project Directorate 1-3 i R. K. Lorson, NRC Senior Resident Inspector hh \

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OPERATING DATA REPORT DOCKET NO. 50453 UNIT Seabrook 1 DATE July 1,1998 COMPLETED BY P.E. Nardone TELEPHONE (603) 773 7074 OfERATING STAT 1]S

1. Umt Name: Seabrook Station Unit 1

2. Reporting Period: JUNE 1998

3. Licensed Thermal Power (MWt): 3411

4. Nameplate Rating (Gross MWe): 1197

5. Design Electncal Ratmg (Net MWe): 1148

6. Maximurn 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 Restricuons, If Any: Not Applicable This Month Yr-to-Date Cumulative

11. Hours in Reportmg Period 720.0 4343.0 102600.0

12. Number of Hours Reactor Was Critical 246.0 3505.2 60168.7

13. Reactor Reserve Shutdown Hours 0.0 0.0 953.3

14. Hours Generator On-Line 245.3 3474.8 57706.2

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross 'Ihermal Energy Generated (MWH) 823068 11798599 191256681

17. Gross Elec. Energy Generated (MWH) 290524 4165390 66806299

18. Net Electrical Energy Generated (MWH) 279557 4008540 64206194

• 19. Urut Service Factor 34.1 80.0 81.7 l

• 20. Unit Availability Factor 34.1 80.0 81.7

• 21, Urut Capacity Factor (Using MDC Net) 33.5 79.7 79.5

• 22. Unit Capacity Factor (Using DER Net) 33.8 80 4 79.8

• 23. Unit Forced Outage Rate 65 9 20.0 6.9

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

25. If Shut Down At End Of Report Period, Esumated Date of July 06,1998 Startup:

' 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.

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-443 UNIT Seabrook 1 DATE July 1,1998 COMPLETED BY P.E. Nardone TELEPilONE (603) 773-7074

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MONTH JUNE 1998 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (M'We-Net) (MWe-Net) 1 1161 17 0 2 1161 18 0 3 1161 19 0 l 4 1162 20 0 5 1161 21 0 6 1162 22 0 7 1162 23 0 8 1161 24 0 9 1161 25 0 10 1054 26 0 11 141 27 0 12 0 28 0 13 0 29 0 14 0 30 0

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15 0 16 0 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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REFUELING INFORMATION REQUEST DOCKET NO. 50-443 UNIT Seabrook1 DATE July 1,1998 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, 04/03/99 l

3. Scheduled date for restart following refueling: Refueling Outage 6, 05/12/99 [ 40 days ]

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) 376 (*) (c) 0 (*)

(*) Four new fuel assemblies were moved to Spent Fuel Pool on 06/12/98.

These were originally Cycle 06 Feed Fuel Assemblies that now will be utilized in Cycle 07.

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:

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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