ML19246A754
| ML19246A754 | |
| Person / Time | |
|---|---|
| Site: | 05000484 |
| Issue date: | 06/26/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Dienhart A NORTHERN STATES POWER CO. |
| References | |
| NUDOCS 7907060317 | |
| Download: ML19246A754 (1) | |
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o GLEN E LLYN, ILLINOIS 60137 Docket No. 50-484 Northern States Power Company ATTN:
Mr. A. V. Dienhart Vica President - Tyrone Energy Park 100 North Barstow Street Eau Claire, WI 54701 Gentlemen:
This Circular is provided as an early notification of a possibly signif-icant matter.
It is expected that recipients will review the in fo rma t ion for possible applicability to their facilities.
No specific action or response is requested at this time.
If further hPC 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 ontact the Director of the appropriate NRC Regional Office.
Sincerely.
% bb.
g ames G. Keppler Director
Enclosure:
IE Circular No. 79-10 cc w/ encl:
Central Files Director, NRR/DPM Director, NRR/ DOR PDR Local PDR NSIC TIC Regions I & IV 300 209 7907060317
U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMLNT REGION III e
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 end Tube Turns Division, Chemetron Corporation of Louisville, Kentucky reported on April 4 and 12, 1972, respectively, that potentially defective pipe fittings were m2nufactured from material with a high carbon content be:ond 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 indicateo it could be at least four lengths. From this pipr., 4" - 90 degrees and 45 degrecs
.237 wall elbows and 2"
.237 val: straight tees, ASTM A-234 WPB, were produced by Tube Turns.
Each length of pipe is twenty feet and makes from 20 to 30 fittings. Approximately 27,000 fittings were produced end 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, 19/5, the Tube Turns Division reported to the NRC that 4" elbows, Lot W6719, ha e. been provided to the nuclear power plants listed below.
U.S.
Steel has tes' ed about oae hundred and fif ty (150) hose and installed fittings at the seven sites noted by an asterisk.
- Crand Gulf
- Zirer
- Phipps Bend
/
- Waterford III
- Brown's Ferry Midland Limerick 300 210 Shoreham
- LaSalle Sequoyah
- Brunswick Hartsville Bellefonte On June 1,1979, the Tube Turns Division reported to the NRC via telephone that of the 160 fittings tested at Nuclear 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 cf their pipefitting receiving documents for the period from March 1978 to January 1470
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and determine if fittings manufactured by t y identified as Tube Turn Lot W6719.
If ship 1 were received, appropriate corrective actio l/pDUPLICATE DOCUMENT Entire document previously entered into system under:
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