ML20210K601

Monthly Operating Rept for Jul 1997 for Seabrook Nuclear Station,Unit 1

ML20210K601
Person / Time
Site:	Seabrook
Issue date:	07/31/1997
From:	Feigenbaum T, Nordone P NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-97090, NUDOCS 9708190326
Download: ML20210K601 (5)

Text

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\ North- North Atlantic Energy Service Corporation n

, Atlantic g.a no,300 Seabrook. sii o3874 (603) 474-9521 The Northeast Utilities System 1

August 11,1997 Docket No. 50-443 NYN-97090 United States Nuclear Regulatory Commission Attention: Document Control Desk

l. Washington, DC 20555 l

Seabrook Station Monthly Goeratino Renort Enclosed please find Monthly Operating Report 97-07. This report addresses the operating and

- shutdown experience relating to Seabrook Station Unit I for the month of July,1997 and is submitted in accordance with the requirements of Seabrook Station Technical Specification 6.8.1.5.

Should you required further information regarding this matter, please contact Mr. Terry L. Harpster, Director of Licensing Services, at (603) 773-7765.

Very truly yours, NORTH A NTIC ENERGY ERVICE CORP.

B &

. FeigpH6auni Executive Vic esident

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and Chief Nuclear r cc: H. J. Miller, Region I Administrator A. W. De Agazio, NRC Project Manager, Seabrook Station h /

F. Paul Bonnett, Senior Resident inspector, Seabrook Station E

9708190326 970731

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- OPERATING DATA REPORT DOCKET NO. 50443

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UNIT Seabrook 1 - 'I DATE August 5,1997 COMPLETED D P.E. Nardone TE12 PHONE (6031 773-7074 OPERATING STATUS

1. Unit Name:

Seabrook Station Unit 1

2. Reporting Period: JULY,1997

3. Licensed 1hermal Power (MWO: 3411-

4. Nameplate Rating (Gross MWe):

1197

5. Design Electrical Rating (Net MWe): 1148

6. Maximum Dependable Capacity (Gross MWe): 1204

7. Maximum Dependaele 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

'Diis Month Yr to-Date Cumulative

11. Hours in Reporting Period 744.0 5087.0 H584.0

12. Number of Hours Reactor Was Critical 744.0 3W5.7 53620.6

13. Reactor Reserve Shutdown flours ' O.0 0.0 953.3

14. Hours Generator On-Line 744.0 3888.7 51189.5 i

- 15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 2508503 13112213 169183423

- 17. Gross Elec. Energy Generated (MWH) 886472 4632507 59014474

18. Net Electrical Energy Generated (MWH) 852888 4456234 -56708182

• 19. Unit Service Factor 100.0 76.4 81.8

• 20. Unit Availability Factor 100.0 76.4 81.8

• 21. Unit Capacity Factor (Using MDC Net) 99.0 75.6 79.3

• 22. Unit Capacity Factor (Using DER Net) 99.9 76.3 79.6 -_

'23. Unit Forced Outage Rate 0.0 0.0 5.1

- 24. Shutdowns Scheduled Over Next 6 Months (Type, Date, Norw Scheduled and Duration of Each):.

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

• NOTE: ' Cumulative

• values based on total hours starting 8/19/90, date Regular Ibli Power Operation began.

~ Increased MDC values (Items 6 & 7) starting 12/01/95, 1of4

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-443 UNIT Scabrook i DATE August 5,1997 COMPLETED BY P.E. Nardone TELEPilONE (603) 773-7074 MONTil: JULY 1997 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 7M 17 1159 3

2 1106 18 1161 3 1146 19 1161 4 1160 20 1161 5 1161 21 1162 6 1160 22 1162 7 1160 23 1161 8 1160 24 II61 l

j 9 1160 25 1159 l

10 1160 26 1160 11 1161 27 1160 12 1160 28 1161 13 1161 29 1161 14 1161 30 1160 15 1160 31 1161 16 1158 INSTRUCTIONS On this format, list the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest wlmle megawatt.

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UNIT SIIUTDOWNS AND POWER REDUCTIONS DOCKET NO. 54 443 UNIT Seabrook I DATE August 5,1997 COMPLETED BY P.E. Nardne REPORTMONT11 JULY 1997 TELEPIIONE (603) 773-7074 NO. DA1E TYPE' DURATION REASON *

(HOURS) METTIOD OF SIILTTING DOWN REACTOR' LICENSEE EVENT REPORT # CAUSERECURRENCE

& CORRECTIVE ACTION TO PREVENT PageIofI 9745 08/03/97 F 0 F N/A Chenustry smpimg determined the Refucimg Waer Storage rank (RWST) boric acid concentranon was beks the Tecluncal Speedicarrm (TS)Inmt. A plart shut down was irutiated in accordance with TS requirements i Folkming two controlled teric acal addstens to the RWST.

i the boron concertranon was versfied no be within th 2 funrt. He plars shut &mn was termmated at 91 % RTP.

F: Forced Reason:

3 i S: Scheduled A Root Cauw Analysis is currendy on going A - Equipment Failure (Explam) Method:

B - Maintenance or Test 1 - Manual l C - Refuehng 2 - Manual Scram J D - Regulatory Restricrxin 3 - Automatic Scram

{ E - Operator Training & Liceme Examinaten 4 - Continued from previous month t l F - Administrarive 5 - Power Reduction (Duration = 0)

G - Operanonal Error (Explain) 9 - Other (Explain)

, II - Other (Explain) 3 of 4

I UNIT SHUTDOWNS AND POWER REDUCTIONS , ,

DOCKET NO. 5G443 l UNTT Seahrm>k 1 DATE August $.1997 COMPLETED BY P.E. Nanene TELEPIIONE (603) 773-7074 REPORT MONTil JULY.1997 NO. DATE TYPE' DURATION REASON

• METIIOD OF SIIUTTING LICENSEE EVENT CAUSE & CORRECTIVE ACTION TO PRE %T.NT

,. (IIOURS) DOY'N REACTOR' REPORT # RECURRENCE PageI ofI l

0 F $ N/A Chemistry sampling determined the Ref>: ling Waer 9745 08/03/97 F Storage Tank (RWST) teric acki cowentratum was below the Tethrucal Specifica*m (M limit. A plant shut down w.s imtiated in accordance with TS requirements Folk > wing two controlled twwie ack! a&btums to the RWST.

the boron concentratum was venfeed to be wahm the T S limit. The plant shut down was termmated at 91% RTP.

A Root Cauw Analysis is currently on gmng i 2 s F: Forced Reason: Metlust:

S: Scheduled A - Equipment Failure (Explain) 1 - Manual B - Maintenance or Test 2 - Manual Scram C - Refuehng 3 - Automatic Scram D - Regulatory Restriction 4 - Continued from prevams month E - Operator Training & License Examination 5 - Power Reduction (Duratxm = 0)

F- Administrative 9 - Other (Explain)

G - Operational Error (Explain)

II - Other (Explain) 3 of 4

a REFUELING INFORMATION REQUEST DOCKET NO. 50443-UNIT Seabrook1 DATE ' August 5.1997 COMPLETED BY P.E. Nardone TELEPilONE (603) 773-7074

1. Name of Facility: Seabrook Unit i

2. Scheduled date for next refueling shutdown: Refueling Outage 6, 03/06/99

3. Scheduled date for restart following refueling: Refueling Outage 6, 04/14/99 [ 40 days 1

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

N/A

$. 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 I 193 (a) (b) 372 (c) 4

8. - The present licensed spent fuel pool storage capacity and th:: size of any increase in' licensed storne capacity that has been q

- 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 fuct pool assuming the pn.c.ent 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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