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Monthly Operating Repts for May 1998 for Limerick Units 1 & 2
	ML20249A533
Person / Time
Site:	Limerick
Issue date:	05/31/1998
From:	Grimes J, Hinchey P; PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	; NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
	NUDOCS 9806170018
	Download: ML20249A533 (7)
	v • d • e

. _ - _ _ _ _ _.

Limerick Genereting Station lECO NUCLEAR iso?JTgo*"*

' A UNtiof PECO ENway S"*'*

T.S.6.9.1.6 June 15,1998 Docket Nos. 50-352 50-353 License Nos. NPF-39 NPF-85 i

U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

Subject:

Limerick Generating Station Monthly Operating Report For Units 1 and 2 1

Enclosed are the monthly operating reports for Limerick Units 1 and 2 for the month of May 1998 forwarded pursuant to Technical Specification 6.9.1.6.

Very truly yours, j

Jose h P. Grimes 7f Director - Site Engineering Pah Enclosures C54 cci H. J. Miller, Administrator, Region I, USNRC A. L. Burritt, USNRC Senior Resident Inspector LGS J. D. von Suskil, Vice President, LGS 9806170018 980531 "

PDR ADOCK 05000352

.R PDRji

Docket No. 50-352 Attachment to Monthly Operating Report for-May 1998 Limerick Generating Station Unit 1 May 1 through May 31,1998 1.

Narrative Summary of Ooeratina Experiences Unit 1 began the month of May 1998 at 0% rated thermal power (RTP) with 1R07 refuel outage in progress.

On May 18,1998 at 2041 hours0.0236 days 0.567 hours 0.00337 weeks 7.766005e-4 months , reactor criticality was achieved during start-up from l

1R07 refuel outage. Power ascension proceeded. Note: There were many planned L

activities associated with start-up from 1R07; only unplanned activities are listed below.

On May 25,1998 at 0427 hours0.00494 days 0.119 hours 7.060185e-4 weeks 1.624735e-4 months , power ascension was suspended at nominal 70%

RTP for 1 A Condensate Pump investigation. 1 A Condensate Pump was repaired and

. retumed to service on May 29 at 0312 hours0.00361 days 0.0867 hours 5.15873e-4 weeks 1.18716e-4 months with reactor power at nominal 70%.

1 On May 29, 1998 at 0630 hours0.00729 days 0.175 hours 0.00104 weeks 2.39715e-4 months , power was reduced from nominal 70% to 60% RTP to place 1 A Reactor Feed Pump in service because of vibration problems experienced when placing it in service at 70% power 1 A Feed Pump was placed in service on May 29 at 0819 hours0.00948 days 0.228 hours 0.00135 weeks 3.116295e-4 months and power ascension continued.

On May 29,1998 at 1905 hours0.022 days 0.529 hours 0.00315 weeks 7.248525e-4 months , power ascension was suspended at 87% RTP due to high vibration indication on 1B Reactor Recirc Pump. Power was reduced on May 29 at l

2001 hours0.0232 days 0.556 hours 0.00331 weeks 7.613805e-4 months to nominal 80% RTP. Recirc Pump vibration probe was replaced and power ascension resumed on May 30 at 0820 hours0.00949 days 0.228 hours 0.00136 weeks 3.1201e-4 months .

On May 31, ' 1998 at 0232 hours0.00269 days 0.0644 hours 3.835979e-4 weeks 8.8276e-5 months , power was reduced to 90% RTP for investigation of

2 Feedwater Heater high level.

Unit i ended this operating period at nominal 90% RTP.

L;-

11.

Challences to Main Steam Safety Relief Valves There were no challenges to the Main Steam Safety Relief Valves during the month of

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Docket No. 50-353 Attachment to Monthly Operating Report for May 1998 '

Limerick Generating Station Unit 2 May 1 through May 31,1998 1.

Nagptive Summary of Ooeratina Experiences -

- Unit 2 began the month of May 1998 at 100% rated thermal power (RTP).

On May 2,1998 at 2303 hours0.0267 days 0.64 hours 0.00381 weeks 8.762915e-4 months , power was reduced to 98% of RTP for main turbine valve testing. Power was restored to 100% of RTP on May 3 at 0225 hours0.0026 days 0.0625 hours 3.720238e-4 weeks 8.56125e-5 months .

On May 10,1998 at 0100 hours0.00116 days 0.0278 hours 1.653439e-4 weeks 3.805e-5 months , power was reduced to 98% of RTP for main turbine valve testing. Power was restored to 100% of RTP at 0217 hours0.00251 days 0.0603 hours 3.587963e-4 weeks 8.25685e-5 months .

On May 17,1998 at 0102 hours0.00118 days 0.0283 hours 1.686508e-4 weeks 3.8811e-5 months , power was reduced to 96% of RTP for main turbine valve testing.~ Powerwas restored to 100% of RTP at 0219 hours0.00253 days 0.0608 hours 3.621032e-4 weeks 8.33295e-5 months .

On May 24,1998 at 0104 hours0.0012 days 0.0289 hours 1.719577e-4 weeks 3.9572e-5 months , power was reduced to 98% of RTP for main turbine valve testing. Power was restored to 100% of RTP at 0226 hours0.00262 days 0.0628 hours 3.736772e-4 weeks 8.5993e-5 months .

On May 29, 1998 at 2213 hours0.0256 days 0.615 hours 0.00366 weeks 8.420465e-4 months , power was reduced in preparation for 2M23 maintenance outage. On May 30,1998 at 0322 hours0.00373 days 0.0894 hours 5.324074e-4 weeks 1.22521e-4 months with power at 21% of RTP, the 9

reactor was shutdown to 0% RTP to begin 2M23 safety relief valve maintenance outage.

Unit 2 ended this operating period at 0% of RTP.

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- There were no challenges to the Main Steam Safety Relief Valves during the month of May..

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ML20249A533

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