ML20072V135

Monthly Operating Rept for Aug 1994 for Seabrook Station

ML20072V135
Person / Time
Site:	Seabrook
Issue date:	08/31/1994
From:	Feigenbaum T, Nardone P NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-94103, NUDOCS 9409190208
Download: ML20072V135 (5)

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North Atlantic Energy Service Corporation

, 2- . Nortli g.O. 3,,300

$ Atlantic Seabrook, NH 03874 i

o (603) 474-9521, Fax (603) 474 2987 The Northeast Utilities System

( Ted C. Feigenbaum l NYN- 94103 Senior Vice President &

Chief Nuclear Officer l

September 12,1994 I

i I 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 94-08. This report addresses the operating and stutdown experience relating to Seabrook Station Unit I for the month of August,1994 and is submitted in accordance with the requirements of Seabrook Station Technical Specification 6.8.1.5.

Very truly yours, C. Feigenb um f&& c-J0 % l Enclosure ,

l cc: Mr. Thomas T. Martin Regional Administrator United States 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. Antone C. Cerne NRC Senior Resident inspector

PO Box 1149 Seabrook, Nil 03874

+ p i n ,,

9409190208 940831 PDR ADOCK 05000443 (

R prio

C OPERATING DATA REPORT DOCKET NO. 50443 4

. UNIT Seabrook 1 DATE 09/12/94

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

l l - -=

i l OPERATING STATt'S ,

I l Seabrook Station Unit 1

l. Uma Name:

2. Reportmg Peraxt: AUGUST 1994 l

3. Licensed Thermal Power (MWt): 3411

4. Nameplate Rating (Gross MWe): 1197

5. Design Electrical Ratmg (Net MWe): 1148

6. Maximum Dependable Capacity (Gross MWe): 1200

7. Maximum Dependable Capacity (Net MWe): 1150 l

8. If Changes Occur in Capacity Ratings (Items Number 3 through 7) Since Last Not Applicabie j l Report Give Reasons:

9. Power Level To Which Restricted, If Any: None i

10. Reasons For Restrictions. If Any: Not Applicable This Month Yr-to-Date Cumulative i

11. Ilours in Reporting Period 744.0 5831.0 69024.0

12. Number of flours Reactor Was Critical 744.0 2630.9 30338.0

13. Reactor Reserve Shutdown Hours 0.0 0.0 953.3 I

14. Ilours Generator On-Line 737.2 2538.0 28215.2 l

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWil) 2381880 8411926 91844373

17. Gross Elec. Energy Generated (MWII) 834238 2938648 31912391 l 18. Net Electrical Energy Generated (MWil) 801207 2823734 30647352

! *19. Unit Service Factor 99.1 43.5 75.9

• 20. Unit Availability Factor 99.1 43.5 75.9 l

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• 21. Uma Capacity Factor (Using MDC Net) 93.6 42.1 72.8

• 22. Umt Capacity Factor (Using DER Net) 93.8 42.2 72.9

• 23. Unit Forced Outage Rate 0.0 17.9 7.5

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, None Scheduled

! and Duration of Eachn

25. If Shut Down At End Of Report Perxx1, Estimated Date of Not Applicable Startup-i

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

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AVERAGE DAILY UNIT POWER LEVEL '  ;

DOCKET NO. 50443 l

UNIT Seabrook l DATE 09/12/94 ,

COMPLETED BY P.E. Nardone I

TELEPllONE 603/474-9521 i Ext. 4074 l

.i 1

l MONTil: AUGUST 1994 r .!

! DAY AVERAGE DAILY POWER LEVEL DAY' AVERAGE DAILY POWER LEVEL I (MWe Net) (MWe-Net)

! 163 17 1156 2 410 18 1155 l- 3 652. 19 1154 l

l 4 990 20 1154 5 1151 21 -1155 l

6 1154 22 1154

'7 1154 23 1153 I

8 1154 .24 '1154 9- 1154 25 1154 j 10 1154 26 1154 Il 1154 27 - 1155 -

l 12 1155 28 1154 13 1155 29 1155 14 1156 30 - 1155 15 1155 31 1155 16 1155 INSTRUCTIONS j 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 SilUTDOWNS AND MMVER REDUCTIONS DOCKET NO. 50443 UNIT . SeabnmL I DATE 09/12/94 COMPLETED BY P.E. Nardone TELEPIIONE 603/474-9521 Ext. 4074 REPORT MONTil AUGUST.1994 NO. DATE TYPE' DURATION REASON 2 METilOD OF SIIUITING LICENSEE EVENT CAUSE & CORRECTIVE ACTION TO PREVENT (IIOURS) DOWN REACTOR' REPORT # RECURRENCE Page 1 ofI 94413 08/01/94 5 6. 8 B 9 NA Performed Turbine Overspeed Trip Surseillance.

Turbine load reduced from 260 MWe. Generator breaker opened. Reactor power bemg hcid at 16% ,

RTP.

I 2 3 F: Forced Reason: Method:

S: Scheduled A - Equipment 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 Training & License Examination 5 - Power Reduction (Duration = 0)

F - Administrative 9 - Other (Explain) -

G - Operational Error (Explain)

II - Other (Explain) 3 of 4

., ,i,6 REFUELING INFORMATION REQUEST DOCKET NO. 50-443 UNIT Seabrook 1 DATE 09/12/94 COMPLETED BY P.E. Nardone TELEPilONE N0/474-9521 Ext. 4074

1. Name of Facility: Seabrook Unit 1

2. Scheduled date for next refueling shutdown: Refueling Outage 4,01/06/96

3. Scheduled date for restart following refueling: Refueling Outage 4, 02/29/96

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

Yes, Technical Specification Figures 3.4-2 and 3.4-3 will require revision.

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 operaiing procedures:

None

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.

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