ML020460086

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Meeting Summary on Reactor Coolant Piping Inspection Plans During Refueling Outage RF-13, MB3839
ML020460086
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 02/13/2002
From: Assa R
NRC/NRR/DLPM/LPD2
To:
NRC/NRR/DLPM
Assa R, NRR/DLPM, 415-1391
References
TAC MB3839
Download: ML020460086 (5)


Text

February 13, 2002 LICENSEE: SOUTH CAROLINA ELECTRIC & GAS COMPANY (SCE&G)

FACILITY: VIRGIL C. SUMMER NUCLEAR STATION

SUBJECT:

MEETING

SUMMARY

ON REACTOR COOLANT PIPING INSPECTION PLANS DURING REFUELING OUTAGE RF-13 (TAC NO. MB3839)

On January 17, 2002, the NRC staff met at NRC Headquarters in Rockville, Maryland, with representatives of SCE&G and AEA Technology to discuss V. C. Summers reactor coolant system (RCS) piping inspection plans during their next refueling outage (RF-13) in Spring 2002.

In October 2000, during RF-12, the licensee identified cracking in the RCS A loop hot leg weld. Consequently, SCE&G repaired the A loop piping and submitted the results of the Westinghouse examination and analysis of the reactor pressure vessel nozzel-to-pipe welds for the hot and cold legs of all three loops (A, B, and C) using ultrasonic testing (UT) and eddy current testing (ET). On February 20, 2001, the NRC staff issued a Safety Evaluation that concluded that the unit could be operated for one fuel cycle. In a letter dated January 9, 2001, SCE&G committed to perform the best and most meaningful nondestructive examination (NDE) inspection during RF-13 in order to ensure the integrity of the B and C hot leg welds.

At the January 17, 2002 meeting, SCE&G presented its RF-13 hot leg NDE strategy, using Wesdyne enhanced UT and ET inspection techniques to demonstrate weld integrity and satisfy their inspection commitments. They proposed using smaller transducers, higher frequencies, and an improved transducer sled. Finally, they informed the staff that SCE&G intends to apply the Mechanical Stress Improvement Process on V.C. Summers RCS piping in order to modify residual tensile stresses and mitigate future crack growth.

At the conclusion of the meeting, SCE&G informed the NRC staff that they will be seeking expedited review of the inspection results and issuance of a revised SE in order to support V.C.

Summers start-up. The staff responded that the NRC recognizes SCE&Gs schedular needs and should be able to support their request if the inspection results indicate much smaller crack growth rates than those identified in the staff SE and do not exhibit significant new indications. is the attendance list for the meeting, and Enclosure 2 is the handout material that was supplied by SCE&G.

/RA/

Ramin R. Assa, Project Manager Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-395

Enclosures:

1. Attendance List
2. SCE&G Handout cc w/encls: See next page

February 13, 2002 LICENSEE: SOUTH CAROLINA ELECTRIC & GAS COMPANY (SCE&G)

FACILITY: VIRGIL C. SUMMER NUCLEAR STATION

SUBJECT:

MEETING

SUMMARY

ON REACTOR COOLANT PIPING INSPECTION PLANS DURING REFUELING OUTAGE RF-13 (TAC NO. MB3839)

On January 17, 2002, the NRC staff met at NRC Headquarters in Rockville, Maryland, with representatives of SCE&G and AEA Technology to discuss V. C. Summers reactor coolant system (RCS) piping inspection plans during their next refueling outage (RF-13) in Spring 2002.

In October 2000, during RF-12, the licensee identified cracking in the RCS A loop hot leg weld. Consequently, SCE&G repaired the A loop piping and submitted the results of the Westinghouse examination and analysis of the reactor pressure vessel nozzel-to-pipe welds for the hot and cold legs of all three loops (A, B, and C) using ultrasonic testing (UT) and eddy current testing (ET). On February 20, 2001, the NRC staff issued a Safety Evaluation that concluded that the unit could be operated for one fuel cycle. In a letter dated January 9, 2001, SCE&G committed to perform the best and most meaningful nondestructive examination (NDE) inspection during RF-13 in order to ensure the integrity of the B and C hot leg welds.

At the January 17, 2002 meeting, SCE&G presented its RF-13 hot leg NDE strategy, using Wesdyne enhanced UT and ET inspection techniques to demonstrate weld integrity and satisfy their inspection commitments. They proposed using smaller transducers, higher frequencies, and an improved transducer sled. Finally, they informed the staff that SCE&G intends to apply the Mechanical Stress Improvement Process on V.C. Summers RCS piping in order to modify residual tensile stresses and mitigate future crack growth.

At the conclusion of the meeting, SCE&G informed the NRC staff that they will be seeking expedited review of the inspection results and issuance of a revised SE in order to support V.C.

Summers start-up. The staff responded that the NRC recognizes SCE&Gs schedular needs and should be able to support their request if the inspection results indicate much smaller crack growth rates than those identified in the staff SE and do not exhibit significant new indications. is the attendance list for the meeting, and Enclosure 2 is the handout material that was supplied by SCE&G.

/RA/

Ramin R. Assa, Project Manager Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-395

Enclosures:

1. Attendance List
2. SCE&G Handout cc w/encls: See next page DISTRIBUTION:

PUBLIC PDII-1 Rdg. B. Thomas S. Rosenberg OGC B. Sheron JZwolinski/LMarsh K. Parczewski KLandis, RII ACRS H. Berkow Y. King PMNS DMcCain DOCUMENT NAME: G:\PDII-1\SUMMER\RAMIN\MB3839-MtgSum.wpd ML020460086 OFFICE PM:PDII/S1 LA:PDII-2 SC(A):PDII-1 NAME RAssa EDunnington RLaufer DATE 2/11/02 2/7/02 2/12/02 OFFICIAL RECORD COPY

LIST OF ATTENDEES MEETING WITH SOUTH CAROLINA ELECTRIC & GAS COMPANY ON VIRGIL C. SUMMER NUCLEAR STATION HELD JANUARY 17, 2002 NAME ORGANIZATION Bill Bateman EMCB/DE/NRR Greg Halnon SCE&G Mel Browne SCE&G Gary Moffett SCE&G Terry McAlister SCE&G Manu Badlani AEA Technology Ed Siegel Westinghouse Chuck Rice SCE&G Deann Raleigh LIS, Scientech Tom Harrison McGraw-Hill C.E. Carpenter NRR/EMCB Tom Damico AEA Technology Ed Ray Westinghouse Dwain Alexander Westinghouse David Kurek Wesdyne Simon Sheng EMCB/DE/NRR Jim Davis RES/DET/MEB Tim Steingass NRR/DE/EMCB Ramin Assa NRR/DLPM Allen Hiser NRR/DE/EMCB Steve Doctor* PNNL Malcom Widman* NRC/SRI Deborah Jackson* NRC/RES

  • Attended by phone Enclosure 1

South Carolina Electric & Gas Company VIRGIL C. SUMMER NUCLEAR STATION cc:

Mr. R. J. White Ms. Kathryn M. Sutton, Esquire Nuclear Coordinator Winston & Strawn Law Firm S.C. Public Service Authority 1400 L Street, NW c/o Virgil C. Summer Nuclear Station Washington, DC 20005-3502 Post Office Box 88, Mail Code 802 Jenkinsville, South Carolina 29065 Mr. Stephen A. Byrne Vice President, Nuclear Operations Resident Inspector/Summer NPS South Carolina Electric & Gas Company c/o U.S. Nuclear Regulatory Commission Virgil C. Summer Nuclear Station 576 Stairway Road Post Office Box 88 Jenkinsville, South Carolina 29065 Jenkinsville, SC 29065 Chairman, Fairfield County Council Drawer 60 Winnsboro, South Carolina 29180 Mr. Henry Porter, Assistant Director Division of Waste Management Bureau of Land & Waste Management Department of Health & Environmental Control 2600 Bull Street Columbia, South Carolina 29201 Mr. Gregory H. Halnon, General Manager Nuclear Plant Operations South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station, Mail Code 303 Post Office Box 88 Jenkinsville, South Carolina 29065 Mr. Melvin N. Browne, Manager Nuclear Licensing & Operating Experience South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station, Mail Code 830 Post Office Box 88 Jenkinsville, South Carolina 29065