ML20113B508

Monthly Operating Rept for Nov 1984

ML20113B508
Person / Time
Site:	Millstone
Issue date:	11/30/1984
From:	Gibson J, Mroczka E NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
MP-6494, NUDOCS 8501220013
Download: ML20113B508 (7)

Text

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OPERATING DATA REPORT DOCKET NO. 50-336 DATE 12/13/84 COMPLETED BY J. Gibson TELEPHONE (203)447-1791 EXT. 4431 o OPERATING STATUS

1. Unit Name: Millstone Unit 2 Notes Items 21 and 22

2. Reporting Period: November 1984 cumulative are weighted

3. Licensed Thermal Power (MWt): 2700 Ave. Unit operated at

4. Nameplate Rating (Gross MWe): 909 2560 MW Thermal prior

5. Design Electrical Rating (Net MWe): 870 to its uprating i.c ine

6. Maximum Dependable Capacity (Gross MWe): 866.25 current 2700 MW Thermal

7. Maximum Dependable Capacity (Net MWe): 833.25 Power Level. *

8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7)

Since Last Report, Give Reasons:

The Conversion of the Main Steam Control Valves from partial ARC to full ARC, Condenser Tube Fouling, Feedwater Flow Venturi Fouling, and High Steam Generator Blowdown Rates.

9. Power Level To Which Restricted, If Any (Net MWe): N/A

10. Reasons For Restrictions, If Any: N/A a

This Month Yr.-to-Date Cumulative

11. Hours In Reporting Period 720 8040 78312

12. Number Of Hours Reactor Was Critical 655.9 7852.8 56218.1

13. Reactor Reserve Shutdown Hours 0 0 2205.5

14. Hours Generator On-Line 583.3 7477.4 53659.6

15. Unit Reserve Shutdown Hours 0 0 468.2

16. Gross Thermal Energy Generated (MWH) 1524599.3 19437265 135748934

17. Gross Elec. Energy Generated (MWH) 492400 6241101 44047479

18. Net Electrical Energy Generated (MWH) 470885 5996396 42212097

19. Unit Service Factor 81.0 93.0 68.5

20. Unit Availability Factor 81.0 93.0 69.1

21. Unit Capacity Factor (Using MDC Net) 78.5 86.7 64.1

22. Unit Capacity Factor (Using DER Net) 75.2 85.7 _

63.2

23. Unit Forced Outage Rate 16 4 17.3

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

Millstone Unit 2 is scheduled to shutdown in February 1985 for a 16 week refueling and Maintenance Outage.

25. If Shut Down At End Of Report Period, Estimated Date of Startup: N/A

26. Units In Test Status (Prior to Commercial Operation),: Forecast Achieved INITIAL CRITICALITY N/A N/A INITIAL ELECTRICITY N/A N/A COPHERCIAL OPERATION N/A N/A

• Item 21 Yr-To-Date is weighted Ave, due to a change in 10C effective November 1, 1984. oIIy[

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' AVERAGE DAILY UNIT P0'WER LEVEL DOCKET NO. 50-336 UNIT Millstone 2 L

DATE 12/13/84-COMPLETED BY J. Gibson TELEPHONE (203)447-1791 Ext. 4431 MONTH November 1984 DAY - AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 834- 17 -0 2' 834 18 0 3 837 19 ?40

4. 838 20 790' 5 836' -21 850 6 836 22 851 7 837 23 852 8 837 24 852 9 837 25 852 10 835' 26 854 11 835 27 855 12 835 28 664 13 798 29 0 14 837 30 0

-15 332~ 31 ---

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' INSTRUCTIONS-

.. On this. format,^11st 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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. DOCKET NO. 50-336 .

UNIT SHUTDOWNS AND POWER REDUCTIONS UNIT NAME Millstone 2 DATE 12/13/84 COMPLETED BY J. Gibson REPORT MONTH November 1984 TELEPHONE (203)447-1791 EXT. 4431 l

No. Date Type Duration Reason 2 Method of Licensee Systeg Compogent Cause & Corrective (Hours) Shutting 3 Event Code Code Action to Down Reactor Report # Prevent Recurrence 12 G41115 F 84.4 A 3 84-11 CD VALV0P Unit Tripped from

'100% power due to Closure of the #1 Steam Generator

• Main Steam Isolation Valve.

The cause of the Valve Closure was a Failed Air Cylinder on the-Valve Operator.

Air Cylinders on both Main Steam Isolation Valve Air Cylinders were replaced. See LER.

1 2 3 4 F: Forced Reason: Method: Exhibit G - Instructions S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram Entry Sheets for Licensee C-Refueling 3-Automatic Scram Event Report (LER) File D-Regulatory Restriction 4-Continued from (NUREG-0161)

E-Operator Training & License Examination previous month F-Administrative 5-Power Reduction 5 G-Operational Error (Explain) (Duration = 0) Exihibit 1 - Same Source H-Other (Explain) 9-Other (Explain) i

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-DOCKET NO. 50-336 *

. UNIT SHUTDOWNS AND POWER REDUCTIONS- UNIT NAME Millstone 2 DATE 12/13/84 COMPLETED BY J. Gibson REPORT MONTH November 1984 TELEPHONE (203)447-1791 EXT. 4431 l 2 Cause & Corrective No. 'Date- Type Duration Reason Method of Licensee Systeg Compogent (Hours) Shutting 3 Event Code Code ' Action to /

Down Reactor Report # Prevent Recurrence:

i 13- 841128 'F 52.3' A 2 84-12 CH HTEXCH Unit was in process" i of shutting down from 100% Power due to excessive l tube leakage in the l' '

5A Feedwater Heater.

At approx. 70% power The plant was manually tripped due to High SA Htr.

Level.- Plugged Leaking Tubes.

1 -2 3 4 Exhibit G - Iastructions F: Forced- Reason: Method:

S: 1 Scheduled A-Equipment Failure (Explain)- 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram Entry Sheets for Licensee C-Refueling 3-Automatic Scram Event Report (LER) File D-Regulatory Restriction 4-Continued from (NUREG-0161)

E-Operator Training & License Examination previous month

-F-Administrative 5-Power Reduction 5 G-Operational Error (Explain) (Duration = 0) Exibibit 1 - Same Source H-Other (Explain) 9-Other (Explain). .

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Docket No. 50-336

• Date 12/13/84 Unit Name Millstone 2 Completed By J. Gibson ~

Telephone'(203)447-1791 EXT. 4431 CORRECTIVE MAINTENANCE SUMARY.FOR SAFETY RELATED EQUIPMENT REPORT MONTH November 1984

. DATE SYSTEM COMPONENT MAINTENANCE. ACTION

.11/5/84 CVCS 'C' Charging Pump Repacked Pump 11/8/84 CVCS 'A' Charging Pump Repacked Pump 11/29/84 CVCS 'B' Charging Pump Breaker Replaced Main Contactor 11/16/84' Main Steam .2-MS-64A0 Replaced Operator Air Cylinder 11/5/84~ Reactor. Protection RPS Channel C Replaced B1-Stable Power Supply System 4

Docket No. 50-336 Date: 12/13/84 Completed By: J. Gibson Telephone: (203)447-1791 EXT. 4431 REFUELING INFORMATION REQUEST

1. Name of facility: Millstone 2

2. Scheduled date for next refueling shutdown: Next refueling is_in February 1985.

3. Schedule date for restart following refueling: June 1985

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

Currently under evaluation due to the impact of failed fuel.

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

A Tech. Spec. change request has been submitted for the Outage Equipment Hatch.

Additional Requests will follow.

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:

Discharge of failed fuel will impact reload analysis.

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

(a) In Core: J17 (b) 376

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:

Currently 667 Plans are being formulated to rerack the spent fuel pool

9. The projected date of the last refueling that can be discharged to the spent fuel pool assuming the present licensed capacity:

1985, Spent Fuel Pool, Full core off load capacity is reached.

1987, Core Full, Spent Fuel Pool contains 648 bundles.

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December 14, 1984 MP-6494 Director Office of Management Information and Program Control U. S. Nuclear Regulatory Commission Washington, D. C. 20555

Reference:

Facility Operating License No. DPR-65 Docket No. 50-336

Dear Sir:

This letter is forwarded to provide the report of operating and shutdown experience relating to Millstone Unit 2 Monthly Operating Report 82-11 in accordance with Appendix A Technical Specifications, Section 6.9.1.3. One additional copy of the report is enclosed.

Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY L/

E. J. Mroczka Station Superintendent Millstone Nuclear Power Station EJM/RB:ejz cc: Director, Office of Inspection and Enforcement, Region I Director, Office of Inspection and Enforcement, Washington, D. C. D.0)

U. S. Nuclear Regulatory Commission, c/o Document Managenient Branch, Washington, D.C. 20555 lli l et

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