ML20034G948
| ML20034G948 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 03/08/1993 |
| From: | George Wunder Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9303120148 | |
| Download: ML20034G948 (4) | |
Text
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UNITED STATES i
NUCLEAR REGULATORY COMMISSION g
E WASHINGTON, D. C. 20555 k
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March 8, 1993
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Docket No. 50-395 LICENSEE:
South Carolina Electric & Gas Company FACILITY: Virgil C. Summer Nuclear Station, Unit No. 1
SUBJECT:
SUMMARY
OF JANUARY 14, 1993 MEETING On January 14, 1993, the staff met with representatives of South Carolina Electric & Gas Company (SCE&G) and Westinghouse Electric Corporation (Westinghouse) to discuss a proposed interim plugging criteria (IPC) amendment for the Virgil C. Summer Nuclear Station, Unit No. 1 (Summer Station).
The IPC amendment would revise the criteria that require the plugging of a cracked steam generator U-tube, provided that the crack is in the vicinity of a tube support plate.
In the spring of 1993, Summer Station is scheduled to enter its last operating cycle before the steam generators are replaced.
Such an amendment might allow Summer Station to operate for this cycle without derating.
Westinghouse presented pulled tube data fror clants similar to Summer Station, and used this data to establish a relationship between the inspection results for the Summer Station steam generators and the underlying condition of the U-tubes in the tube support plate region. They then went on to discuss the detectability of defects in the tube support pit te region.
Westinghouse also presented data en crack growth, and correlated tube degradation to burst strength using pulled tube data.
They presented a tube repair basis requiring that projected leakage for the most limiting steam generator following a steam line break accident will be less than 1.0 gallon-per minute.
Westinghouse made a detailed presentation on crack morphology.
This part of the meeting was proprietary.
SCE&G discussed their steam generator inspection methods. They also discussed what they saw as the advantages of an IPC amendment; they referred specifically to reduced repair costs and the ability te continue to operate at rated power.
9303120148 930300 DR ADOCK 05000395 PDt i
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nrad 7-D-4 G. C. Lainas 14-H-3 S. Brewer 8-E-23 J. A. Mitchell S. Long 10-E-4 P. D. Anderson T. Reed 14-H-25 E. Jordan MNBB 3701 D. LaBarge 14-B-21 OGC K. Karwoski 7-D-4 B. D. Liaw 7-D-26 R. Lobel 17-G-21
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J. Strosnider 7-D-4 L. Plisco, EDO 17-G-21 LAffh2kkRPE PM:PD21:DRPE D:PD21:DRPE
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0FC PdAlfd h b G d k :tmw JJA[bl NAME DATE 03/3/93 03/of/93 03//r/93 Document Name:
SUM 85471. HTS
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l Virgil C. Summer. Nuclear Station cc:
Mr. R. J. White Nuclear Coordinator S.C. Public Service Authority c/o Virgil C. Summer Nuclear Station P. O. Box 88 (Mail Code 802)
Jenkinsville, South Carolina 29065 J. B. Knotts, Jr., Esq.
Winston & Strawn 1400 L Street, N.W.
Washington, D. C.
20005-3502 Resident Inspector / Summer NPS c/o U.S. Nuclear Regulatory Commission Route 1, Box 64 Jenkinsville, South Carolina 29065 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W.,
Suite 2900 Atlanta, Georgia 30323 Chairman, Fairfield County Council Drawer 260 Winnsboro, South Carolina 29180 Mr. Heyward G. Shealy, Chief Bureau of Radiological Health South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201 Mr. R. M. Fowlkes, Manager Nuclear Licensing & Operating Experience South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station P. O. Box 88 Jenkinsville, South Carolina 29065 Mr. John L. Skolds Vice President, Nuclear Operations South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station P. O. Box 88 Jenkinsville, South Carolina 29065
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h ENCLOSURE 1 i
ATTENDANCE LIST NRC STAFF LICENSEE F
B. Liaw R. Clary G. Lainas D. Haile J. Strosnider J. Frick J. Mitchell R. Kelso
- 5. Hoffman E. Murphy OTHER H. Conrad R. Lobel A. Bahatnagar (Duke Power)
D. LaBarge T. Cook (Duke Power)
G. Wunder D. Mayes (Duke Power)
S. Brewer R. Pollard (Union of Concerned Scientists) l K. Karwoski S. Bernhoft (Wisconsin Public Service)
T. Reed G. Holmes (Wisconsin Public Service)
D. Naujock K. Toth (American Electric Power)
S. Long R. Gamble (Sartex Corp.)
P. Heaslen (Battelle)
R. Kurtz (Battelle)
T. Pitterle (Westinghouse) t P. Prabhu (Westinghouse) e D. Malinowski (Westinghouse) i W. Cullen (Westinghouse)
M. Zawalick (Westinghouse)
J. Begley (Packer Engineering)
R. Draper (Winston & Strawn) i l
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