ML20154C567

Monthly Operating Rept for Apr 1988

ML20154C567
Person / Time
Site:	Limerick
Issue date:	04/30/1988
From:	Alden W, Gropp R PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8805180224
Download: ML20154C567 (7)

Text

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i AVERACE DAILY UNIT P0HER LEVEL a

1 DOCKET No. 50 - 352 UNIT LIMERICK UNIT 1 DATE MAY 13. 1988 COMPA W PHILADELPHIA ELECTRIC COMPAW R. N. GR0PP I

TECHNICAL ASSISTANT i

l LICENSING SECTION i

t4JCLEAR SUPPORT DEPARTMENT t

TELEPHONE t2151 841-5058 MONTH APRIL 1988 P

DAY AYERAGE DAILY P0HER LEVEL DAY AVERAGE DAILY P0HER LEVEL ttt4E-NET) 1 M4E-NET 1 1

1014 17 0

2 957 18 0

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5 858 21 0

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7 865 25 445 4

8 632 24 533 4

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8805180224 880430 PDR ADOCK 05000352 i

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OPERATING DATA REPORT DOCKET NO. 50 352 DATE MAY 13. 1988 i

COMPLETED BY PHILADELPHIA ELECTRIC COMPAt#

R. H. SROPP TECHNICAL ASSISTANT LICEtGIts SECTI0te NUCLE AR SUPPORT DEPARTMENT r

TELEPHONE I2151 841 5058 OPERATItG STATUS

1. W4IT HAME t LIHERICK udIT 1 l PCTES: udIT 1 EXPERIENCED A l

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E. REPORTING PERIOD APRIL. 1988 l

MAINTENANCE OUTAGE FOR l

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3. LICEtGED THERMAL PCHER(PNTlt 3293 l

CLEANItG OF CONDEtGER l

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4. HAMEPLATE RATItG (GROSS tHE li 1138 i

TUDES.

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5. DESIGN ELECTRICAL RATING (HET PNEls 1055 l

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6. MAXIMUM DEPENDABLE CAPACITY (GROSS PNE li 1092 l

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7. MAXIttJH DEPENDABLE CAPACITY INET MHE ls 1055 l

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8. IF CHAtGES DCCUR IN CAPAC*TY RATItGS IITEMS PAJtBER 3 THROUGH 71 SINCE LAST REPORT. GIVE REAS0tGt t

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9. POHER LEVEL TO HHICH RESTRICTED. IF ANY INET PNEls

10. REASotG FOR RESTRICTI0tc. IF ANY:

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THIS MONTH YR-TO-DATE CtktJLATIVE

11. HOURS IN REPORTItG PERIOD 719 2.903 19.679

12. NutBER OF HOURS REACTOR HAS CRITICAL 411.3 2.595.3 15.463.3

13. REACTOR RESERVE SHUTDatti HOURS 0.0 0.0 0.0

14. HCURS GENERATOR ON-LINE 405.0 2.589.0 15.151.7

15. udIT RESERVE SHUTDo&N HOURS 0.0 0.0 0.0

16. GROSS THERMAL ENERGY GENERATED ltHH) 1.025.916 8.077.664 46.974.045

17. GROSS ELECTRICAL ENERGY GENERATED (tNH) 325.680 2.608.230 15.307.640

12. NET ELECTRICAL ENERGY GENERATED itNH) 309.445 2.511.62.

14.679.461 PAGE 1 OF 2

OPERATING DATA REPORT (CONTItAJED)

DOCKET No. 50 - 352 DATE MAY 13. 1988 THIS PONTH YR.TO.DATE CLHJLATIVE

19. UNIT SERVICE FACTOR 56.3 89.2 77.0

80. UNIT AVAILABILITY FACTOR 56.3 89.2 77.0

21. UNIT CAPACITY FACTOR (USING HOC NET) 40.8 82.0 70.7

82. UNIT CAPACITY FACTOR IUSING DER NET) 40.8 82.0 70.7

83. UNIT FORCED OUTAGE RATE 43.7 10.8 5.0

20. SHUT 00HG SCHEDULED OVER NEXT 6 HONTHS (TYPE e DATE AND DURATION OF EACHlt

85. IF SHUTDOHN AT END OF REPORT PERIOD ESTIMATED DATF OF STARTUPI do. UNITS IN TEST STATUS IPRIOR TO COMMERCIAL OPERATION):

FORECAST ACHIEVED INITIAL CRITICALITY 12/19/84 12/22/84 THITIAL ELECTRICITY MID APRIL 85 4/13/85 COMMERCIAL OPERATION IST QTR 86 2/01/86 l

PAGE 2 OF 2

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UNIT SHUTD0tNS AND NNER REDUCTIONS DOCKET NO. 50 - 352 LMIT NAME LIMERICK UNIT 1

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I DATE MAY 13, 1968 REPORT MONTH APRIL 1968 COMPLETED BY PHILADELPHIA ELECTRIC COMPANY R. N. GROPP TECHNICAL ASSISTANT LICENSING SCCTION PAJCLEAR SUPPORT DEPARTMENT TELEPHONE 1215) 841 5054 I

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l l NETH00 0F l LICENSEE ISYSTEMICOMPONEtEl CAUSE AND CORRECTIVE l

lTYPElDURATIONlREASONISHUTTItG D0ttil _ EVENT l CODE l CODE l ACTION TO NO.I DAVE I (111 (HOURS ll (2) l REACTOR (3) l REPORT 4 l 14) 1 (5) l PREVENT RECURRENCE l

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2 l 880409 l F l 314.0 i B l 3

l N/A l HC l HTEXCH I MAINTENANCE OtfrAGE FOR CLEANING OF CONDENSER I

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(2)

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F - FORCED REASON METH00 EXHIBIT G - INSTRUCTIONS

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3. SCHEDULED A - EQUIPMENT FAILURE (EXPLAIN) 1 - MANUAL FOR PREPARATION OF DATA l

B - MAINTENANCE OR TEST 2. MANUAL SCRAM.

ENTRY CHEETS FOR LICENSEE i

C - REFUELIts 3 - AUTOMATIC SCRAM.

EVENT REFORT (LER)

I O - REGULATORY RESTRICTION 4 - OTHER (EXPLAIN)

FILE INUREG-0161)

E. OPERATOR TRAINING + LICENSE EXAMINATION F - ADMINISTRATIVE IS)

G - OPERATIONAL ERROR I EXPLAIN)

H - OTHERIEXPLAIN)

EXHIBIT I. SAME SOURCE l

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Docket No. 50-352

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Attachmsnt to Monthly Operating Report for April, 1988 Limerick Generating Station Unit 1 April 1 through April 30, 1988 I.

Narrative Summary of Operating Experiences The unit began the report period operating at approximately 97% power due to main turbine backpressure limitations.

On April 2, 1988, reactor power was reduced to approximately 85% in order to determine the location of a fuel leaker.

On April 5, 1988 the D13 Diesel Generator was started for its monthly operability test run.

After successful synchronization and loading to 2850 kW, the diesel generator load increased to 3500 kW with no operator action.

Diesel load control did not respond to immediate attempts by control room personnel, via the control room governor control, consequently the diesel was manually tripped and declared inoperable.

The remaining three diesels were demonstrated operable, within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, in accordance with Technical Specifications.

An investigation into the D13 Diesel Generator control event revealed that the governor was malfunctioning.

The governor was replaced and the diesel was declared operable on April 13, 1988.

On April 9, 1988 at 0131 hours0.00152 days <br />0.0364 hours <br />2.166005e-4 weeks <br />4.98455e-5 months <br />, the unit was shut down for a circulating water condenser tube cleaning mini-outage.

l On April 9, 1988 at 0415 hours0.0048 days <br />0.115 hours <br />6.861772e-4 weeks <br />1.579075e-4 months <br />, with plant shutdown in progress, a full reactor scram occurred as a result of an l

upscale trip on the

'C' IRM channel in combination with a previously inserted manual half scram on the

'B' IRM channel.

1 Again on April 9, 1988, at 1536 hours0.0178 days <br />0.427 hours <br />0.00254 weeks <br />5.84448e-4 months <br /> with the unit in operating Condition 4 (Cold Shutdown), another full scram signal was received due to a spike on the

'F' IRM channel in conjunction with the previously inserted manual half scram.

l All control rods were full-in at the time of the event.

The

'P' IRM channel spike was attributed to electronic noise.

The

'P' IRM was declared inoperable, replaced, subsequently functionally tested and declared operable on April 16, 1988.

On April 22, 1988, at 0320 hours0.0037 days <br />0.0889 hours <br />5.291005e-4 weeks <br />1.2176e-4 months <br />, Limerick Unit 1 returned to power operation following the circulating water condenser tube cleaning mini-outage.

However, reactor power was limited to approximately 80% due to concerns about a fuel j

i leak.

l On April 27, 1988, reactor power was reduced from j

approximately 82% to 63% to facilitate control rod pattern adjustments.

Following control rod pattern adjustment, reactor power was returned to approximately 85% power.

The unit ended the report period operating at approximately 85% power due to concerns about a fuel leak.

Dockot No. 50-352 Attcchm:nt to Monthly Operating Report for April, 1988 II. Challenges to Main Steam Safety Relief Valves There were no challenges to the Main Steam Relief valve system during the month of April.

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PHILADELPHIA ELECTRIC COMPANY 2301 M ARKET STREE T P.O. BOX 8699 PHILADELPHI A. PA.19101 May 13, 1988 l

Docket No. 50-352 Director Office of Resource Management U.S. Nuclear Regulatory Commission Washington, DC 20555 Attention:

Document Control Desk i

SUBJECT:

Limerick Generating Station Monthly Operating Report 4

Gentlemen:

Enclosed is the monthly operating report for Limerick Unit 1 for the month of April, 1988, forwarded pursuant to Technical Specification 6.9.1.6.

l t

Very truly yours, W. M. Alden Director

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j Licensing Section i

Nuclear Support Division

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i Attachment cc:

Director, Office of Inspection

(, Enforcement, USNRC (12 copies)

William T. Russell, Administrator, Region I, USNRC T. J. Kenny, USNRC Senior Resident Inspector Mr. David E. Ney, PA Dept. of Envir. Resources Mr.

P. A. Ross, NRC (2 copies)

INPO Records Center 7

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