ML19246A756
| ML19246A756 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 06/26/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Jeffery Grant TOLEDO EDISON CO. |
| References | |
| NUDOCS 7907060320 | |
| Download: ML19246A756 (1) | |
Text
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NUCLEAR REGULATORY COMMISSION NED f
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ep GLEN ELLYN, ILLINOls 60137 Docket No. 50-346 JUN 2 61979 Toledo Edison Company ATTN:
Mr. James S. Grant Vice President - Energy Supply Edison Plaza 300 Madison Avenue Toledo, OH 43652 Gentlemen:
This Circular is provided as an early notification of a possibly signif-icant matter.
It is expected that recipients will review the information for possible applicability to their facilities. No specific action or response is requested at this time.
If further NRC evaluations so indi-cate, an IE Bulletin will be issued to recommend or request specific licensee actions.
If you have questions regarding this matter, please contact the Director of the appropriate NRC Regional Office.
Sincerely,
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rtJames G. Keppler
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Director
Enclosure:
IE Circular No. 79-10 cc w/ encl:
Mr. T. Murray, Station Superintendent j
Central Files Director, NRR/DPM Director, NRR/ DOR PDR Local PDR NSIC TIC Harold W. Kohn, Power Siting Commission Helen W. Evans, State 3
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of Ohio 7907060320
U.S. NUCLEAR REGULATORY COMISSION OFFICE OF INSPECTION AND ENFORCEMENT REGION III June 26, 1979 IE Circular No. 79-10 (7906200171)
PIPEFITTINGS MANUFACTURED FROM UNACCEPTABLE MATERIAL Description of Circumstances:
Liberty Equipment and Supply Company of Kennewick, Washington and Tube Turns Division, Chemetron Corporation of Lcuisville, Kentucky reported on April 4 and 12, 1972, respectively, that potentially defective pipe fittings were manufactured from material with a high carbon content beyond the range allowed by ASTM A-234 WPB.
These high carbon content fittings may crack when welded.
Tube Turns received 3.500 OD x.250W pipe from U. S. Steel - Lorain -
identified as U. S. Steel Heat No. N570028. A total of 28,153 feet was received and identified by Tube Turns as Lot W6719.
U. S. Steel has not been able to determine the exact number of lengths of pipe of incorrect chemistry, but indicated it could be at least four lengths. From this pipe, 4" - 90 degrees and 45 degrees
.237 vall elbows and 2"
.237 vall straight tees, ASIM A-234 WPB, were produced by fube Turns.
Fath length of pipe is twenty feet and makes from 20 to 30 fittings. Apprcaimately 27,000 fittings were produced and each is identified by Tube Turns Lot No. W6719.
Shipment of these fittings started in March of 1978, and it is estimated all were shipped before the end of 1978.
On May 10, 1979, the Tube Turns Division reported to the NRC that 4" elbows, Lot W6719, have been provided to the nuclear power plants listed below.
U.S.
Steel has tested about one hundred and fif ty (150) loose and installed fittings at the seven sites noted by an asterisk.
- Grand Gulf
- Zimmer
- Phipps Bend d
- Wpgerford III
- Brown's Ferry Midland Li erick J()h Shoreham
- LaSalle Sequoyah f6
- Brunswick Hartsville Bellefonte On June 1, 1979, the Tube Turns Division reported to the NRC via telephone that of the 160 fittings tested at Nuclecy Power Plants, three (3) pieces were found to have a high carbon content and were replaced.
All construction permit holders are advised to conduct a review of their pipefitting receiving documents for the veriod from March 1978 to Jagry 1.979 and determine if fittings manufactured ide.ntified as Tube Turn Lot W6719.
If DUPLICATE DOCUMENT were received, appropriate corrective a Entire document previously entered into system under:
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7906200J ANO No. of pages:
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