ML20064C109

Monthly Operating Rept for Sept 1978

ML20064C109
Person / Time
Site:	Millstone
Issue date:	10/10/1978
From:	Howlett G NORTHEAST UTILITIES
To:
Shared Package
ML20064C108	List: ML20064C103 ML20064C109
References
NUDOCS 7810160130
Download: ML20064C109 (5)

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OPERATING DATA REPORT DOCKET NO. 50-336 DATE 10/3/8 COMPLETED BY G. H. Howlett TELEPHONE .20uad71791 X364 OPERATING STATUS Millstone ?- Not'5 4

l. Unit Name:

2. Reporting Period: SeDtember 1978

3. Licensed Thermal Power (MWt): 2560

4. Nameplate Rating (Gross MWe): 909

5. Design Electrical Rating (Net MWe): 830

6. Maximum Dependable Capacity (Gross MWe): RM

7. Maximum Dependable Capacity (Net MWe): 807

8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report.Give Reasons:

9. Power Level To which Restricted.If Any (Net MWe): NONE

10. Reasons For Restrictions.lf Any: NONE This Month Yr. to.Date Cumulative , .

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11. Hours In Reporting Period 720 6551 24239

12. Number Of Hours Reactor Was Critical 720 3856.5 17318.7

13. Reactor Reserve Shutdown Hours 0 120.0 2000.7

14. Hours Generator On.Line 683.7 3548.6 16222.7

15. Unit Resene Shutdown Hours 0 133.5 226

16. Gross Thermal Energy Generated (MWH) 1.704.986 8.758.959 .38.266.033 -

17. Gross Electrical Energy Generated (MWH) 560,200 2,855,300 12,186,211

18. Net Electrical Energy Generated (MWH) 538.218 2.725.440 11.641.752 *

19. Unit Service Factor 95.0 54.2 66.9

20. Unit Availability Factor 95.0 56.2 67 . 9

21. Unit Capacity Factor (Using MDC Net) 9P.6 51.6 59.5

22. Unit Capacity Factor IUsing DER Net) 90.1 50.1 57.9

23. Unit Forced Outage Rate 5.0 36.6 26.7'

24. Shutdowns Scheduled Oser Next 6 Months (Type. Date.and Duration of Eachl: . s . 4 Refueling outage. March 10. 1979. 8 weeks

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 CRITICA LITY N/A N/A INITI AL ELECTRICITY N/A N/A CO\lMERCIAL OPERATION N/A N/A elm 7tt o /6 c /3 o A

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! DOCKET NO. 50-118 ,

UNIT SHUTDOWNS AND POWER REDUCTIONS

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UNIT NAME Milletnna ?

DATE In/1/7R REPORTMONTH S eptember 1978 COMPLETED BY G.H. Howlett 1II l - -

TELEPHONE 203/447-1791 Y164 I

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w E 2 jg E 3, No. Date g 3g

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Licensee Event g'g E *,, Cause & Corrective Action to H

$5 5 j@g Report

• mV g Prevent Recurrence

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780910 F 36.3 A 2 N/A HH HTEXCH Power was reduced manually to 50%

4 when an attempt was made to isolate i

the IB high pressure feedwater heater 1

and 'B' low pressure feedwater heater i string. The 'lB' heater isolation j attempt failed, resulting in a further 4

power reduction with the subse off-line repairs to the 'lB','quent 3B' and

'4B' feedwater heaters. The reactor

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remained critical and upon. completion

!. . of the repairs normal power operations

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resumed.

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Sununary: Operation was at near full power throughout the report periodj except! for the off-line repairs on 10th.

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I. AVERAGE DAILY UNIT POWER LEVEL i

! DOCKET NO. 50-336 i

UNIT Millstone 2 DATE 10/3/78 COMPLETED BY G.H. Howlett III TELEPHONE 203/447-1791 X364 MONTH September 1978 DAY AVERAGE DAILY POWER LEVEL DAY AVER AGE DAILY POWER LEVEL (MWe-Net) iMWe Neti I 804 17 811 2 804 is 810 l

l 3 803 19 ,

812 4 803 20 8Il 5

802 ,,

812 i

6 802 22 812 7 803 23 790 g 795 807 24 9 703 25 817 io 173 26 818 0 (-28) OI7 i: 27 12 R72 28 814 13 808 29 814 y 809 30 313 15 A10 31 -

16 81 3 INSTRUCTIONS On this format, hst the average daily unit power lesel in MWe Net for each day in the reporting inonth. Compute to the nearest whole megawatt.

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OockettNo., 50-336 t

Page of Date 10/3/78 Unit Name Millstone 2 Completed By G.H. Howlett III -

Telephone 203/447-1791 X 364 .___

CORRECTIVE MAINTENANCE

SUMMARY

FOR SAFETY RELATED EQUIPMENT Report Month August 1978 f

DATE SYSTEM MAINTENANCE ACTION COMF0fGT __

8/1/78 liigh Pressure Safety 'A' HPSI pump P41A Replaced failed bearing, reset balancing drum.'

Injection. .

8/11/78 lh0vVitalRegulated Inverter Inv.-2 Replaced failed circuit board.

Instrument A.C.

8/22/78 Low Pressure Safety 2-SI-736 LPSI Pp 'A' Discharge Overhauled leaking valve.

Injedtion Drain Valve t

8/25/78 Service Water Piping Patched corroded /erroded pipe via weld.

i 8/ 31/ 78 Low Pressure Safety 2-SI-736 LPS! Pp. 'A' Disch. Replaced valve. 3 Injection Drain Valve ,

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• Docket No. 50-336 Date: 10/3/78

. Completed By: G.H. Howlett Telephone: 9na/a47 1701 v1Aa REFUELING INFORMATION REQUEST

1. Name of facility: Millstone 2 . -

2. Scheduled date for next refueling shutdown: March 10,1979 -

3. Scheduled date for restart following refueling: May 5, 1979

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

Because the Spring,1979 refueling will be only the second at Millstone Unit No. 2, Technical Specification Changes are anticipated, especially in the area of reactor

. engineering specifications. Inspections of the CEA guide tubes and the steam generators are scheduled for the second refueling outage; the results of these inspections may ultimately involve a license amendment. Review of the reload design is scheduled for January,1979.

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

Proposed licensing action is tentatively scheduled to be submitted on or about Februa ry, 1979.

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:

Serious consideration has been given to uprate the thermal output for cycle 3 from 2560 MWT to 2700 MWT. Further schedular details will be forwarded as they developed.

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

(a) In Core: 217 (b) 72

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:

667

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

1983, Spent Fuel Pool, full core off load capability is reached.

1986, Core Full, Spent Fuel Pool contains 648 bundles.

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