ML20065T418

Monthly Operating Rept for Aug 1982

ML20065T418
Person / Time
Site:	Oyster Creek
Issue date:	09/13/1982
From:	Baran R, Sharma H GENERAL PUBLIC UTILITIES CORP.
To:
Shared Package
ML20065T410	List: ML20065T408 ML20065T418
References
NUDOCS 8211020448
Download: ML20065T418 (11)

Text

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MONTHLY OPERATIONS

SUMMARY

August 1982 At the beginning of the report period, the Oyster Creek

, Nuclear Generating Station was operating at 436 MWe with

] power limited by core reactivity.

On August 10, the "B" Stack Gas Sample Pump tripped on

thermal overload. The pump was restarted within two (2) minutes.

A Reactor shutdown was commencel on August 13 due to the failure of Emergency Service Water (ESW) Pumps B, C, and D to meet the differential pressure test acceptance criteria.

The shutdown was terminated after the ESW pumps met the acceptance criteria duriny a retest. However, as ESW pump differential pressures had not returned to values considered normal and reduced ESW flow rates were measured through the Containment Spray Heat Exchangers, a Reactor shutdown was commenced after further evaluation in order to investigate the cause. The shutdown began at 2335 hours0.027 days <br />0.649 hours <br />0.00386 weeks <br />8.884675e-4 months <br /> on August 14, 1982. The generator was off line at 0340 hours0.00394 days <br />0.0944 hours <br />5.621693e-4 weeks <br />1.2937e-4 months <br /> on August 15, 1982.

Examination of the Containment Spray Heat Exchangers revealed biofouling of the tube sheets and minor waterbox baffle deformation. The heat exchangers were cleaned and baffle plate braces were installed.

Also, during the shutdown, maintenance was performed on two (2) Electromatic Relief Valves. The Reactor Building Closed Cooling Water Heat Exchangers were cleaned, and a hydrostatic test of the Reactor vessel was satisfactorily performed.

A Reactor startup was commenced on August 29, 1982, after the necessary repairs were completed. The generator i

was on the line at 2052 hours0.0238 days <br />0.57 hours <br />0.00339 weeks <br />7.80786e-4 months <br /> the same day. The Rod Worth Minimizer failed early during this startup. According to Technical Specification requirements, another startup this calendar year without this feature is prohibited.

At the end of the report period, the Plant was operating at 435 MWe with load being limited by core reactivity.

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8211020448 820920 PDR ADOCK 05000219 R PDR l

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The following events were identified as potential Reportable Occurrences:

On August 10,1982, "B" Stack Gas Sample Pump tripped on overload.

On August 15, 1982, the administrative controls for keeping main steam 1 line drain valves V-1-106, V-1-110, and V-1-111 secured in a closed position were defeated prior to reaching a cold shutdown condition.

On August 23, 1982, an inspection of off Gas Isolation Valve V-7-31 revealed the valve was only closed to 1/8 inch from its full closed position.

I On August 25,1982, seven (7) hydraulic snubbers failed functional testing.

On August 26, 1982, reactor water level instrumentation for one channel in each Reactor Protection System and one channel in each of several safety systems were rendemd inoperable as a result of a loss of reference column head.

On August 29, 1982, a Reactor startup was commenced with the Rod Worth Minimizer out of service.

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i UNIT SilUIDOWNS AND POWER REDUC 110NS r cr a a'<

N E DATE Q-7-R7 COMPLETED BY R. Rnenn REPORT MON T11 August 1982 971-4640 TELEPilONE w B E

, jE "g ,Y5 Licensee E,, go. Cause & Corrective

, No. Date g 3g = 2g& Event p o" Action to H

$E 5 5ggO Report # to O !g Prevent Recurrence 4

O 26 8-15-82 F 353 Il 1 NA zz zzzzzz Plant shutdown for inspection /

repairs on the Containment Spray System Heat Exchangers I 2 3 4 F: Forced Reason: hfethod: Exhibit G. Instructions i S: Schedu?eJ A Equipment Failure (Explain) 1-hf anual for Preparation of Data i B Maintenance of Test 2 Manual Scram. Entry Sheets for IJcensee C Refueling 3 AutomaticScram- Event Report (LER) File (NUREG-D Regulatory Restriction 4 Other(Explain) 0161)

E-Operator Training & Ucense Examinati9n F Administrative 5 -

G-Operational Error (Explain) Exhibit I Same Source (9/77) llether(Explain)

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AVERAGE DAILY POWER LEVEL NET MWe i

Docket #. . . . . . . 50-219 Unit . . ... . . . O. C. # 1 Report Date . . . . . September 13, 1982 Compiled by . . . . 11ari Sharma Telephone . . . . . . 609-971-4638 MONTil August 1982 DAY MW DAY MW 1 428 17 0 i

2 425 18 0 3 424 19 0 4 421 20 0 5 415 21 0 6 412 22 0 7 415 23 0 8 424 24 0 9 414 25 0 i 10 410 26 0 11 413 27 0 12 414 28 0 13 410 29 17 14 412 30 344 15 49 31 440 16 0 i

OPERATING DATA REPORT OPERATING STATUS Unit Name. . . Oyster Creek

,, Docket Number . . 50-219 Utility Data Prepared By . . . Hari Sharma 609-971-4638 l-Reporting Period . . . August 1982

. Licensed Thermal Power (MWT) . . . 1930 Nameplate Rating (Gross MWE) . . 687.5 x 0.8

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I Maximum Dependable Capacity. (Gross MWE) . . . 650 Maximum Dependable Capacity (Net MWE) . . . 620 If changes occur in Capacity Rating Since Last Report, Give Reason . . .

None Power Level to Which Restricted, If Any (Net MWE) .. . 400 Reason for-Restriction, If any . . .

Fuel Depletion

• 1 MONTH YEAR CUMULATIVE

! HOURS IN PERIOD 744.00 4

5831.0 111239.0 -

j HOURS RX CRITICAL 412.7 2899.9 82627.1

, RX RESERVE SHUTDOWN HRS. 0.0 0.0 468.2 4

HRS. GEN ON LINE (SERVICE) 390.4 2796.1 79816.6 UT RESERVE SHUTDOWN HRS 0.0 0.0 0.0 GROSS THERMAL ENERGY 522100. 3864200. 133421500.

GROSS ELEC. ENERGY 160520. 1226390. 45142620.

NET ELEC. ENERGY 150230. 1155640, 43396480.

UT SERVICE FACTOR 52.5 48.0 71.8 UT AVAILABILITY FACTOR 52.5 48.0 71.8 UT CAPACITY FACTOR MDC 32.6 32.0 62.9 UT CAPACITY FACTOR DER 31.1 30.5 60.0 FORCED OUTAGE FACTOR 47.5 52.0 11.7 The next scheduled outage is to begin on January 15, 1983.

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- o. Paga 1 of 2 Augusti SUhfMRY OF QASL MechanicalhRINTENANCE EQUIPMENT MALFUNCTION W RRECTIVE ACTION All Hx tubes hydrolazed. Baffle plates Containment Spray Heat High differential pressure in 1-3 & 4 were found to be bowed.

Exchangers 1-1, 1-2, 1-3, 1-4 Suoport struts were installed for tem-norary fix to prevent further damage.

"B" CRD Pump Oil leak on gear box Tightened cover plate bolts.

"A" Emergency Service Low output pressure Pump removed and suction cleaned.

Water Pump Tested satisfactorily.

Isolation Condenser Valve Packing leak Old packing removed. New stem packing V-14-37 installed.

Electromatic Relief Valve Spool Piece Bolt Loose All bolts retorqued.

"B" Refueling Bridge Air Not maintaining pressure New air line hose installed. Com-Compressor pressor tested satisfactorily.

Off Gas Sample Pump Leaking oil seal New shaft and seal installed. Pump tested satisfactorily, CRD Accumulator 34-11 Scram Leaking through New seat ring and gaskets installed.

Inlet Valve "A" Stack Gas Sample Pump Insufficient vacuum Installed new pump. Tested satis-l factorily.

Main Steam Isolation Valve Loose packing gland nuts Packing gland adjusted. Stroke tested NSO4B satisfactorily.

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• . '. Page 2 of 2 August SUl+RRY OF QASL Mechanical MAIN'lHENCE EQUIPMENT FAIRJNCTION CORRECTIVE ICTICN

'CRD Accumulator 34-11 Packing leak Adjusted packing Scram Inlet Valve Isolation Condenser Valve Packing leak Two rings of packing added and stroke V-14-33 tested satisfactorily.

. . Installed new main discs and lapoed C and D Electromatic Leaking by seats in both valves. Installed'new Relief Valves oilot valve internals in both valves.

Tested satisfactorily.

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Page 1 of 2 August SUhfMRY OF QASL Electrical MAIN'IHRNCE EQUIP >EiT PAIEUNCTION CORRECTIVE iTTICN Off Gas Sample Pump Power cord open insulation Repaired bare wire in plug. Placed back in service.

V-1-106 V-1-106 stops in mid-travel Tightened loose wire on torque switch #55. Tested satisfactorily.

Torus to drywell vacuum Defective agastat Replaced agastat. Tested satisfacto-b reake r rily.

Adjusted indicating arm for clearance Emergency Service Water Meter sticking - checked calibration. Tested 52B amp Meter satisfactorily.

Fuel Pool Pumo "lA" Discharge press falling off Took current readings - no maintenance performed.

Checked and cleaned shorting bar. Re-Electromatic Relief Valves Shorting bar high resistance placed rollers. Operated satisfactorik within specifications.

1-7 Sump Level switch out of adjustment Adjusted switch. Ball was knocked lower into sump. Problem corrected.

Re fueling. Crane Slack cable light does not work Relamped indicating light. Worked satisfactorily.

Reactor Building Airlock CRD Room outside door can be Replaced interlock switch on inside Door opened while inside door is door. Doors working properly now.

open.

Augmented Off Gas System OG-I-040 vault cooler will not Repaired start switch and placed back start in service.

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Ee- y Page 2 of 2 August SUbNARY OF QASL Electrical MAINTENMCE EQUIPhEff MALFUNCTION OORRECTIVE ACTICN Augmented Of f Gas System 030 moisture removal train Reset high pressure switch. Chiller chiller compressor not working restarted and runs properly.

Augmented Off Gas System Valves - AS-SOV-010B and AS-SOV- Rebuilt both valves and placed back 009B leaking through in service. Tested satisfactorily.

Augmented Off Gas System "B" recombiner outlet valve Cleaned solenoid. Valve tested OG-AOV-003B sticking satis factorily af ter placing in service.

Containment Spray System Leaking terminal boxes Installed gaskets in boxes, meggered, II bridged and tested satisfactorily.

Core and Containment Spray Leaking terminal boxes Sealed all fittings as they enter boxes System 1-7 Sump Cover rubbing cable Cable rerouted to prevent rubbing on Cover.

Relugged main field leads, replaced Rx Building Crane Conduit and wiring damaged wire to shunt field, replaced shunt field and tested satisfactorily.

Motors were meggered and bridged.

Containment Spray System I Water sprayed motors Installed new gasket around terminal box on motor. All readings were satis-factory. Returned to service.

Off-Gas Hold-Up Pipe Insoection of valve V-7-31 Adjusted wipe on switches. Put locking switches nut on actuating arm. Tested satis-factorily.

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Prg:. 1 of 1 Augus t ' SUbt%RY OF QASL Instrument N NCE EQUIP >ENT F%IEUNCTICd 00RRDCTIVE ACTICN Augmented Of f Gas System Moisture Removal Train "A" Solenoid Operated Valve Cleaned plunger and replaced 531enoid Discharge Valve (OG-AOV- Inoperative coil, cycled valve, and tested 005 A) satisfactorily.

Drywell Humidity Recorder Inoperative Repaired broken wire on motor assembly, tested satisfactorily.

Augmented Of f Gas System Intermittent Alarm Repaired cold solder connecti:n on Hydrogen Detector (OB-14) zero calibration control tested satis f acto rily.

Source Range Monitor #22 No high high light Replaced lamp and tested satis factorily.

Control Rod Drive Unit Noisy Scram solenoid valve Replaced pilot head sub-asse-bly.

1. 14-23 Tested satis factorily.

Control Rod Drive Unit Rod position indication 00 with Replace position indicator pr-be and

1. 42-19 no green-green background tested satisfactorily.

Safety Valve Thermocouple Erroneous reading Replaced screw that had come 'cose (N R-2 8J) from terminal block. Tested satis-factorily.

Area Radiation Monitor Spiking causing spurious Replaced detector and trip / indicator RO-14B-4 alarm unit. Tested satisfactorily.

Control Rod Drive Unit No indication at position 48. Replaced position indicating probe.

1. 38-35 Tested satisfactorily.

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2 Oycter Crook Station Docket No. 50-219 REFUELING INFORMATION -

Name of Facility: Oyster Crsak Station il Scheduled date for next refueling shutdown: January 15, 1983 Scheduled date for restart following refueling: late - 1983 Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment?

A Tech Spec Change Request to incorporate G.E. fuel assemblies will be submitted by September 1, 1982 Scheduled date(s) for submitting proposed licensing action and supporting information:

! March 9, 1981 - Complete NEDO document #24195 (G.E. Reload 1

Fuel Application for Oyster Creek) was submitted.

Important licensing considerations associated with refueling, e.g.,

new or different fuel design or supplier, unreviewed design or per-formance analysis methods, significant changes in fuel design, new operating procedures:

1. General Electric fuel assemblies - fuel design and perfor-mance analysis methods have been approved by the NRC. New

operating procedures, if necessary, will be submitted at a later date.

2. Exxon Fuel Assemblies - No major changes have been made nor j are there any anticipated.

l The nuhber of fuel assemblies (a) in the core - 560 1

(b) in the spent fuel storage pool - 781 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: 1,800 Planned: 2,600 i The projected date of the last refueling that can be discharged to the spent fuel pool assuming the present licensed capacity:

The Spring 1987 Outage.*

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• NOTE: This is for a normal refueling. Full core off-load, however can only be accommodated through about 1983 or 1984 with 1800 licensed locations.

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