ML20043B555

Discusses Util Response to Generic Ltr 89-08, Erosion/ Corrosion - Induced Pipe Wall Thinning. Concludes That Implemented Program to Monitor Erosion/Corrosion Acceptable

ML20043B555
Person / Time
Site:	Limerick
Issue date:	05/23/1990
From:	Clark R Office of Nuclear Reactor Regulation
To:	Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
References
GL-89-08, GL-89-8, TAC-73501, TAC-75302, NUDOCS 9005300199
Download: ML20043B555 (4)

Text

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o, UNITED STATES r{.

f NUCLEAR REGULATORY COMMISSION l

WACHING TON, D. C. 206t4 j

(.....,/

May 23, 1990

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Docket Nos. 50 352 and 50-353 l

I 1

Mr. George A. Hunger, Jr.

tirector-Licensing, MC 5-2A-5 Philadelphia Electric Company Nuclear Group Headquarters i

Correspondence Control Desk P. O. Box No. 195 Wayne, Pennsylvania 19087-0195

SUBJECT:

NRC GENERIC LETTER 89-08: ER0EION/ CORROSION - INDUCED PIPE WALL THINh!NG, LIMERICK GENER.ATING STATION, UNITS 1 AND 2 (MPA B-108 TAC NOS. 73501,75302)

Generic Letter 89-08: " Erosion / Corrosion - Induced Pipe Wall Thinning" ested May 2, 1989 a quired all licensees and applicants to provide assurances,that they have implemented or will implement a program which ensures that erosion /

corrosion induced pipe wall thinning will not lead to unacceptable degradation of single phase or two-phase high-eneroy carbon steel systems. You responded by letter dated July 21, 1989 for Limerick, Units 1 and 2 QNUDOCS Accession-No.8907280105).

Your response stated that the Philadelphia Electric Company is implementing long-term erosion / corrosion monitoring programs at the Limerick Generating Station. These programs provide assurance that administrative controls are in place to assure that the NUMARC program is implemented and that the structural integrity of high energy piping systems is maintained in accordance with the intent of NUREG-1344, " Erosion / Corrosion-Induced Pipe Wall Thinning in U.S.

Nuclear Power Plants.*

i Specifically, your response stated that you have an established long-term erosion / corrosion monitoring program for Limerick Generating Station (LGS),

Units 1 and 2.

The program assures that the structural integrity of high-energy single-phase and two-phase carbon steel systems is maintained. The Limarick Generating Station Erosion / Corrosion Program is described in Specification P-508, Nuclear Engineering Department Specification for Limerick Generating Station Units 1 and 2 - Program for Monitoring Pipe for Wall Thinning due to Erosion / Corrosion." This specification is in place and being implemented.

You also reported that an acceptable ultrasonic detection procedure is being used to inspect for erosion / corrosion in piping systems.

CNPE-SP-3,"NDE Services Special Procedure for the Ultrasonic Detection of Erosion / Corrosion inPipingSystems.") You also reported that baseline inspections of pipe and fittings in single-phase flow locations have been performed at Units 1 and 2 and that baseline inspections (and several follow-up inspections) of pipe and l

fittings in many two-phase flow locations have been performed at Units 1 and 2.

9005300199 900523 PDR ADOCK 05000332

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• Mr. 6. A. Hunger, Jr. We conclude that you have implemented an acceptable program to monitor for erosion / corrosion. This issue is closed for t.imerick Units 1 and 2.

For surposes of our Safety Issues Manager 4nt System (SIMS), MPA B-106 and Generic

.etter 89-08 are considered fully iinplemented as of the date of your response (July 21, 1989).

If you have any questions regarding this matter, please contact us.

Sin ly,

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Project Manager Project Directorate 1 2 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation cc: See next page

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e Mr. George A. Hunger, Jr.

Limerick Generating Station i

Philadelphia Electric Company Units 1 & 2 i

e CC:

Troy B. Conner, Jr., Esquire Mr. Thomas Gerusky, Director Conner and Wetterhahn Bureau of Radiation Protection i

1747 Pennsylvania Ave., N.W.

PA Dept. of Environmental Pesources Washington, D. C.

20006 P. O. Box 2063 Harrisburg, Pennsylvania 17120 Mr. Rod Krich $2A-5 Philadelphia Electric Company Single Point of Contact 955 Chesterbrook Boulevard P. O. Box 11880 Wayne, Pennsylvania 19087-5691 Harrisburg, Pennsylvania 17108-1880 Mr. Graham M. Leitch, Vice President Mr. Philip J. Duca timerick Generating Station Support Manager i

Post Office Fox A Limerick Generating Station Sanatoga, Pennsylvania 19464 P. O. Box A Mr. Marty J. McCormick, Jr.

Plant Manager Mr. Garrett Edwards Limerick Generating Station Superintendent-Technical P.O. Box A Limerick Generating Station Sanatoga, Pennsylvania 19464 P. O. Box A Sanatoga, Pennsylvania 19464 Mr. Larry Doerflein U.S. Nuclear Regulatory Comission Mr. Gil J. Madsen Region I Regulatory Engineer 475 Allendale Road Limerick Generating Station King of Prussia, PA 19406 P. O. Box A Sanatoga. Pennsylvania 19464 i

Mr. Thomas Kenny Senior Resident inspector US Nuclear Regulatory Comission P. O. Box 596 Pottstown, Pennsylvania 19464 Mr. John Doering Project Manager Limerick Generating Station P. O. Box A Sanatoga, Pennsylvania 19464 Mr. Larry Hopkins Superintendent-Operations timerick Generating Station P. O. Box A Sanatoga, Pennsylvania 19464

7 f.

L' Mr. G. A. Hunger, Jr.,

We conclude that you have implemented an acceptable program to monitor for erosion / corrosion. This issue is closed for timerict., Units 1 and 2.

For surposet of our Safety issues Management System (SIMS), MPA B-108 and Generic

.etter 89-08 are considered fully implemented as of the date of your response (July 21, 1989).

If you have any questions regarding this matter, please contact us.

Sincerely, Original signed by Richard J. Clark Richard J. Clark, Project Manager Project Directorate 1-2 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation ec: See next page DISTRIfillTION g

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