ML20198B866
| ML20198B866 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 11/30/1998 |
| From: | Diprofio W, Nardone P NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| AR#98019475, NYN-98140, NUDOCS 9812210191 | |
| Download: ML20198B866 (5) | |
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- k ' North North Atlantic Energy Service Corporation Iw S=3*
o' Seabrook, Nil 03874 i' e A 'y li$18HkM (603) 474-9521 i
The Northeast Utilities System j
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December 14,1998 Docket No. 50-443 1
l NYN-98140 AR#98019475
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United States Nuclear Regulatory Commission l
Attention: Document Control Desk i
Washington, DC 20555-0001 Seabrook Station Monthly Operating Report l
Enclosed please find Monthly Operating Report 98-11. This report addresses the operating and shutdown experience relating to Seabrook Station Unit I for the month of November,1998 and
'is subrs.ed in accordance with the requirements of Seabrook Station Technical Specification I
^ 6.8.1.5; t
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. 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.
W. A.DiProfic Station Director cc:
H. J. Miller, NRC gionI Administrator J. T. Harrison, NRC Project Manager, Project Directorate 1-3
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R. K. Lorson, NRC Senior Resident Inspector g
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9812210191 981130 DR ADOCK 05000443L PML p
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OPERATING DATA REPORT' I.
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DCCKET NO.
50-443 UNIT Seabrook 1 I
DATE December 1,1998
' COMPLETED BY P.E. Nardone TELEPIlONE (603) 773-7074 OPERATING STNIUS i
1.
Unit Name:
Seabrook Station Unit 1 2.
Reporting Period:
NOVEMPEF.1998 3.
Licensed Thermal Power (MWI):
3411 r
4.
Nameplate Rating (Gross MWe):
1242 5.
Design Electrical Rating (Net MWe):
1148
. 6.
Maximum Dependable Capacity (Gross MWe):
1204 l
7.
Maximum Dependable Capacity (Net MWe):
!!S8 8.
If Changes Occur in Capacity Ratmgs (Items Number 3 through 7) Since Last Not Applicable l
Report, Give Reasons:
9.
Power level To Which Restricted, If Any (Net MWe):
None i
l 10.
Reasons For Restrictions, if Any:
Not Applicable This Month Yr-to-Date Cumulative 11.
Ilours in Reporting Period 720.0 8016.0 106273.0 l
12.
Number of Hours Reactor Was Critical -
462.9 6706.0 63369.5 13.
Reactor Reserve Shutdown Hours 0.0 0.0 953.3 14.
IIours Generator On-Line 428.6 6610.8 60842.2 15.
Unit Reserve Shutdown flours 0.0 0.0 0.0 16.
Gross 'Ihermal Energy Generated (MwTI) 1401146 22391199 201849282 17.
Gross Elec. Energy Generated (MWII) 489350 7899994 70540903 j
18.
Net Electrical Energy Generated (MWil) 470138 7602415 67800068 i
- 19.
Unit Service Factor 59.5 -
82.5 81.9
- 20.
Uni' Availability Factor 59.5 82.5 81.9
- 21.
Unit Capacity Factor (Using MDC Net) 56.4 81.9 79.8
- 22.
Unit Capacity Factor (Using DER Net) 56.9 82.6 80.I i
- 23.
Unit Forced Outage Rate 40.5 17.5 7.3 24.
Shutdowns Scheduled Over Next 6 Months (Type, Date, Refueling 03/27/99, 45 days and Duration of Each):
25.
If Shut Down At End Of Report Period, Estimated Date of Not Apphcable l
Startup:
I-I
- 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.
Updated item 4 per NUREG-0020 in July 1998.
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AVERAGE DAILY UNIT POWER LEVEL 1
DOCKET NO.
50443 UNIT Seabrook 1 I
DATE December 1.1998 COMPLETED BY P.E. Nardonc TELEPHONE (603) 773-70'4 i
l 1
MONTil NOVEMBER.1998 1
l DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)
(MWe-Net) 1 1160 17 0
2 1160 18 0
3 1160 19 0
4 1159 20 0
5 1159 21 0
6 1159 22 0
7 1159 23 0
8 1160 24 200 9
1160 25 830 10 1159 26 1156 11 1100 27 1155 12 68 28 1161 13 0
29 1161 14 0
30 1161 15 0
i 16 0
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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 whole megawatt.
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9 UNIT SHUTDOWNS <WD POWER REDUCTIONS DOCKET NO.
50-443 UNIT Seabrook i DATE Novemter I,19@_
COMPLETED BY P.E. Nanione TELEPilONE (603)T73-7074 -
MONT11 NOVEMBER 1998 NO.
DATE TYPE' DURATION REASON:
METIlOD OF SIILTTING LICENSEE EVENT CAUSE & CORRECTIVE ACTION TO PREVENT 3
(IIOURS)
DOWN REACTOR REPORT #
RECURRENCE Page1 of1 nated a power htbn to 16% RU aM remed &
984M 11/12/98 F
291.4 F/A 1
98410 Main Generator from service for inspection of the Generator Step-up Transformer (GSU) links and bus work. A non-routine thermography surveillance identified excessive heating in the *A* phase of the "A*
GSU. Based on the discovery conditions and time constraims imposed by Tecimical Specifications, ntion Management decided to take the Unit to Mode 5 to affect repairs. The Unit returned to full power operation n i1/25/98. See LER 98410 for information on root cause and corrective action.
I 2
3 F: Forced Reason:
Metini:
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 - Ogerational Error (Explain) 11 - Other (Explain) 3 of 4
REFUELING INFORMATION REQUEST 4
DOCKET NO.
50-443
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UNIT Seabrook 1 DATE December 1.1%3 COMPLETED BY P.E. Nardonc l
TELEPilONE (603) 773-7074 1.
Name of Facility:
Seabrook Unit 1 2.
Scheduled date for next refueling shutdown:
Refueling Outage 6, 03/27/99 l
3.
Scheduled date for restart following refueling: Refueling Outage 6, 05/10/99 [ 45 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 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 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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