ML20096E077

Monthly Operating Rept for April 1992 for Three Mile Island Nuclear Station,Unit 1

ML20096E077
Person / Time
Site:	Crane
Issue date:	04/30/1992
From:	Broughton T, Heysek W GENERAL PUBLIC UTILITIES CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
C311-92-2070, NUDOCS 9205190052
Download: ML20096E077 (6)

Text

{{#Wiki_filter:_ _.. _ _. _ ~.l -f, l, -- c GPU Nucteer Corporation ~ [j QQ %f Post Office Bev 480 Route 441 Soutn Middletown, Pennsylvania 17057 0191 717 944 7621 E TELEX 84 2386 Writer's Direct Dial Number; (717) 948-8005 May 13, 1992 C311-92-2070 U. S. Nuclear Regulatory Comission Attn: Document Control Desk Washington, D.C. 20555 Gentlemen:

Subject:

Tnree Mlle Island Nuclear Station, Unit I (TMI-1) Operating License No. DPR-50 Docket No. 50-289 Monthly Operating Report for April 1992 Enclosed are two copies of the April 1992 Monthly Operating Report for Three Mile Island Nuclear Station, Unit 1. Sincerely, ~ hN W T. G. B on Vice President and Director, THI-1 WGH ' Attachments cc: Administrator, Region I THI' Senior Resident Inspector .g as 0-0 gg. } g< -a GPU Nuclear Corporation is a subsidiary of Genera' Pubhc Utikties Corpora:ico

OPERATIONS

SUMMARY

APRIL 1992 The unit entered the month operating at 100% power producing 858 MWe ar.1 continued te operate at 100% power throughout the month. The waste products resulting from the OTSG Chemical Cleaning process were evaporated and the remaining products solidified. MAJOR SAFETY RELATED MAINTENANCE During April, the following major safety related maintenance activities were performed: Soent Fuel Recirculation Pun,o SF-P-l cpent Fuel recirculation pump SF-P-2 was removed from service because of excessive vibration during operation. The motor was removed and inspected. The motor bearings were found worn and were replaced. The pump was subsequently disassembled and inspected. Inspection of the pump revealed excessive clearance between the pump extension piece and the motor shaft. The extension piece was replaced and the pump was reassembled. Reinstallation of the pump and motor is expected to be ompleted in May. Station Blackout Diesel Generator EG-Y-4 In its letter to the NRC describing piston cracking problems, Fairbanks Morse identified GPUN as a recinient of two basic piston castings of unknown origin. GPUN determined that the pistons in question were installed in the Station Blackout (SBO) Diesel Generator EG-Y-4. The SB0 diesel was removed from service to-inspect the pistons with a fiber optic camera. The upper pistons on cylinders #2 and #5 were found to be from a batch identified by Fairbanks Morse as having possible faults. A diesel outage is scheduled for May to replace the upper pistons on cylinders #2 and #5. Screen Wash Ventilation Pumo SW-P-2B Screen Wash Ventilation pump SW-P-2B was removed from service because of high vibration. The motor was remove and the pump was disassembled and removed. Inspection revealed bearing and shaft wear. Reassembly and reinstallation work will be completed in May. 2 l

i- ~

• OPERATING DATA REPORT DOCKET NO-50-289 DATE

__ M:j 13, 1992 COMPLETED BY W G HEYSEK OPERATING STATUS TELB'PHO?2 (717) 948-8191

1. UKIT NAME:

THREV MILE ISLAND UNIT 1 NOTES: ~

2. REPORTING PERIOD:

APRIL 1992 3. ICENSED THERMAL POWER: 2568

4. NAMEPLATE RATING _(GROSS MWe):

871

5. DESIGN ELECTRICAL RATING (NET MWe):

819

6. MAXIMUM DEPENDABLE CAPACITY (CROSS MWe):

834

7. MAXIMUM DEPENDABLE CAPACITY (NET MWe):

786 I .8. IF CHANGES OCCUR IN (ITEMS 3-7) SINCE LAST REPORT, GIVE REASONS: ,9. POWER LEVEL TO WHICH RESTRICTED, IF ANY (NET MWe):

10. REASONS FOR RESTRICTIONS, IF ANY:

THIS MONTH YR-TO-DATE CUMMULATIVE

11.. HOURS IN REPORTIi4G -PERIOD -

(HRS)- 719.0 2903.0 154824.0

12. NUMBER OF HOURS REACTOR WAS CRITICAL (HRS) 719.0 2903.0 79634.0

13. REACTOR RESERVE SHUTDOWN HOURS (HRS) 0.0 0.0 2245.6 i

84. HOURS.UENERATOR ON-LINE' (HRS) 7'.0 2903.0 73559.2

15. UNIT RESERVE SHUTDOWN HOURS

_(ERS) 0.0 0.0 0.0 16.- GROSS THERMAL ENERGY GENERATED (MWH) 1846495 7445146 191334191 .17. GROSS ELECTRICAL ENERGY GENERATED (MWH) '614G31 2489987 64484246 18.-NET ELECTRICAL ENERGY GENERATED (MWH) 580148: 2350964- '60508289. -s 19.-UNIT SERVICE FACTOR (%) 100.0 100.0 50.7 g

20. UNIT AVAILABILITY FACTOR ft) 100.0 100.0 50.7

21. UNIT CAPACITY FACTOR (USING MDC N2?)

102.7 103.0 49.7 p 22.: UNIT CAPACITY FACTOR (USING DER NET) 98.5 98.9 47.7

23. UNIT FORCED OUTAGE RATE

(%) 0.0 0.0 43.6 UNIT >ORCED OUTAGE HOURS (HRS) 0.0 0.0 60648.7

24. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE, DATE AND DURATION OF EACH):

25.: IF SHU[ DOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP:

1 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-289 UNIT TMI-1 DATE May 13, 1992 COMPLETED BY W C HEYSEK TELEPHONE (717) 948-8191 MONTH: APRIL DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-NET) (HWe-NET) 1 810 17 803 2 813 18 807 3-813 19 811 4 813 20 805 5 810 21 798 6 810 22 798 7 806 23 801 8 603-24 799 9 806 25 806 10 804 26 809 11 802 27 809 12 808 28 808 13 813 29 808 14 811 30 807 15 810 31 NA 16 803 4

.c,-. 'q f-3 . 8L* 4, / . w:- ..;L.. s ~ s.- .3 UNIT. SEUTDOWNS JUED PCMER REDUCTICIts DOCKET No. 50-289. .w UNIT NABEE TMI. g. t REPORT' MONTH April'1992 C00EPLETED BY ' W.y -13, 1992 - ^.i - .DATE Ma G. Heysek TurJt1PEostE. (717) 948-8191.. Method of ' Licensee-Systes :osponent 'Cause & Corrective NO-Date-Type' Duration Reason

• Shutting Event 1 Code Code-

- Action to (Hours) Down ' Report #: Prevent Recurrence ' Reactor

• NONE 1

2 3. 4 F Forced, ' Reason' Method Fahibit G - Instructions for S Scheduled A-Equipment Failure (Explain) 1-Manual preparation of Data Entry Sheets e-Maintenance or Test 2-Manual setam for Licensee Event Report (LER) C-Refueline-. 3-Autcentic Scram. File (NUREG-0161) D-Regulatory Restriction: 4-Other (Explain) E-Operator Training & Licensing Examination

5 Exhibit 1 same source

' F-Administrative. ' G-operational Error (Explain) 6 Actually used exhibits F & II NUREG 0161 - N-Other (Explain) 4 5

.[*f.I REFUELING ItiFORMATION RE0 VEST 1. Name of Facility: Three Mile Island Nuclear Station, Unit 1 2. . Scheduled date for next. refueling shutdown: September 17,1993_(10R) 13. Scheduled date for restart following cu" rent refueling: NA 4. Will refueling or _ resumption of operation theieafter require a technical specification change or other license amendment?-- NA If' answer is yes, in general, what will these be? 'If answer is no, has the reload fuel design and core configuration been reviewed by your Plant-Safety Review Committee to determine whether any unreviewed_ safety questions are associated witn the-core reload-(Ref. 10 CFR Section 50.59)? f-no such review has taken place, when is it scheduled? 5.- .Scheauled date(s) for submitting proposed licensing action and supporting information: None planned. 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 Jesign, neW operating ~ procedures:-- 'GPU Nuclear has-installed four Westinghouse Lead Tut Assemblies during the-reload of the TMI-I core for cycle' 9 operation. Westinghouse fuel technology will De utilized to the extent ' possible. 7. The' number of fuel assemblies -(a) in the core, and (b) in the spent fuel C . storage pool: .(a)-177 -(b) 521 - 8. The present licensed-spent fual pool storage-capacity and i.he size of any_ increase in. licensed storage _ capacity that has been requested or is-planned,--in number of fuel assemblies: The'present: licensed capacity is 752. Planning to increase liconsed capacity through feel-pool _ reracking is in progress. 9. The-projected date of the last refueling that can be discharged to the~ spent fuel pool assuming the present licensed capacity: g The.9R (1991) refueling discharge was the last to allow full core off-load capacity (177 fuel assemblies). l 6 .4~6-, r ya y we

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