ML20092G278

Monthly Operating Rept for Aug 1995 for Seabrook Station Unit 1

ML20092G278
Person / Time
Site:	Seabrook
Issue date:	08/31/1995
From:	Feigenbaum T, Nardone P NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-95070, NUDOCS 9509190209
Download: ML20092G278 (5)

Text

i

.g gig North Atlantic Energy Service Corporation j P.O. flox 300 a$. Atlantic Seas,eet, uf103874 (603) 474-9321, Fax (603) 474-2987 The Northeast Utilities System Ted C. Feigenbaum NYN. 95070 Senior Vice President &

Chief Nuclear Officer September i 1,1995 United States Nuclear Regulatory Commission Washington, DC 20555 Attention: Document Control Desk

Reference:

Facility Operating License NPF-86, Docket No. 50-443

Subject:

Monthly Operating Report Gentlemen:

Enclosed please find Monthly Operating Report 95-08. This report addresses the operating and shutdown experience relating to Seabrook Station Unit I for the month of August,1995 and is submitted in accordance with the requirements of Seabrook Station Technical Specification 6.

Very t , yours,

//4ff ffe?L v Ted C. Feigenbaum TCF:ALUact Enclosure cc. Mr. Thomas T. Martin Regional Administrator U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406 Mr. Albert W. De Agazio, Sr. Project Manager Project Directorate I-4 Division of Reactor Projects U.S. Nuclear Regulatory Commission Washington, DC 20555 Mr. John B. Macdonald NRC Senior Resident Inspector l PO Box 1149 Seabrp9h,14H 03874 9509190209 950s31 4 .; '; 4 c; ,j {DR ADOCK 0500 3 h8

OPERATING DATA REPORT DOCKET NO. 50-443 UNIT Seabrook i DATE 09/11/95 COMPLETED BY P.E. Nardone TELEPilONE 603/474-9521 Ext. 4074 OPERAILNG STA1M

l. Umt Name: Seabrook Station Unit 1

2. Reporting Period: AUGUST 1995

3. Licensed Thermal Power (MWO: 3411

4. Nameplate Rating (Gross MWe): 1197 1

5. Design Electrical Rating (Net MWe): 1148

6. Maximum Dependable Capacity (Gross MWe): 1200

7. Maumum Dependable Capacity (Net MWe): 1150

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): 1110MWe

10. Reasons For Restrictions, if Any: Fimi Stage FW lleating capability lost for remainder of Cycle. Throtthng ,

Reheat Steam to MSR's to improve Unit Effici ncy.

This Month Yr-to-Date Cumulative 1 1

11. Ilours in Reporting Perial 744 0 5831.0 77784.0

12. Number of thiurs Reactor Was Critical 744.0 5580.6 38847.6

13. Reactor Reserve Shutdown flours 0.0 0.0 953.3

14. Ilours Generator On-Line 744.0 5437.9 36582.1

15. Umt Reserve Shutdown flours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWII) 2530752 18568693 12M05501

17. Gross Elec. Energy Generated (MWil) 840022 6437057 41861391

18. Net Electrical Energy Generated (MWil) 805675 61892 % 40216412

'19. Unit Service Factor 100.0 93.3 79.8

'20. Umt Availability Factor 100.0 93.3 79.8

• 21. Unit Capacity Factor (Using MDC Neo %2 92.3 77.2

'22. Unit Capacity Factor (Using DER Net) 94.3 92.5 77.4

'23. Unit Forced Outage Rate 0.0 67 6.8

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, Refueling, ll/M/95,36 Days and Duration of Each):

25. If Shut Down At End Of Report Period, Estimated Date of Not Applicabh Startup:

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

I of 4

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50443 UNIT Seabrook1 DATE 09/11/95 COMPLETED BY P.E. Nardone TELEPHONE 603/474-9521 Ext. 4074 MONTil: AUGUST,1995 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 1089 17 1088 2 1089 18 1085 3 1088 19 1080 4 1084 20 1079 5 1085 21 1053 6 1083 22 1036 7 1081 23 1035 8 1082 24 1078 9 1085 25 1090 10 1085 26 1090 11 1086 27 1091 12 1088 28 1090 13 1088 29 1090 14 1088 30 1100 15 1088 31 1109 16 1088 INSTRUCTIONS On this format, list the average daily unit powcr level in MWe-Net for each day in the reporting rnonth. Compute to the nearest whole megawatt.

2 Of 4

- - -~

j UhTT SIIUTDOWNS AND POWER REDUCTIONS DOCF1T NO. 54443 UNIT Seabrook 1 DATE 09/11/95 l

COMPLETED BY P.E. Na. d me

, TELEPHONE 603/474-9521 l Ext. 4074 i

! REPORT MONTil AUGUST 1995 NO. DATE TYPE' DURATION REASON' METilOD OF SIIUI"ITNG LICENSEE EVFAT CAUSE & CORRECTIVE ACTION TO PRETTNT 8

(IlOURS) DOWN REACTOR REPORT # RECURRENCE Page1 of1 F 0 AIF Power m M RD m $g *s in mater 9542 08/21N5 5 N/A IIcater 21 A.

Returned to full power on 08/24/95.

I 2 3 F: Forced Reason: Method:

S: Scheduled A - Equipment Failure (Explain) 1 - Macual B - Maintenance or Test 2 - Manual Scram C - Refueling 3 - Automatic Scram D - Regulatory Restriction 4 - Connnued from previous month E - Operator Trainmg & License Exammation 5 - Power Reduction (Duration = 0)

F - Administrative 9 - Other (Explain)

G - Operational Error (Explain)

II - Other (Explain) i 3 of 4

(( REFUELING INFORMATION REQUEST

. DOCKET NO. 50-443 UNrr Seabrook1 DATE 09/11/95 <

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

1. Name of Facility: Seabrook Unit 1

2. Scheduled date for next refueling shutdown: Refueling Outage 4,11/04/95

3. Scheduled date for restart following refueling: Refueling Outage 4,12/19/95

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

Yes, revisions to Technical Specifications for Accumulator ami Refueling Water Storage Tank boron concentration, Main Steam Safety Valve serpoints and of Pressure isolation Valves will be required.

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

Accumulator and Refueling Water Storage Tank boron concentration was submitted in June 16,1995.

Pressure Isolation Valves was submitted on July 27,1995. Main Steam Safety Valve serpoints revisions are scheduled for submittal by August 31,1995.

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:

Implementation of Amendment #33 to Facility Operating License Wide Band Operation. .

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

(a)In Core: 193 (b) 208

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.

4 of 4