ML19224C965
| ML19224C965 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 06/26/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Boyer V PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| References | |
| NUDOCS 7907100353 | |
| Download: ML19224C965 (1) | |
Text
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o UNITED STATER 8'
NUCLEAR REGULATORY LOMMISSION
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631 PARK AVENUE KING OF PRUSSI A, PENNSYLVANI A 1940G 4
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June 26, 1979 Docket Nos. 50-352 50-353 Philadelphia Electric Company Attention:
Mr. V. S. Boyer Vice President Engineering and Research 2301 Market Street Philadelphia, Pennsylvania 19101 Gentlemen:
The enclosed IE Circular 79-10 is provided as an early notification of a possibly significar:t matter.
It is expected that recipients will review the information for possible applicability to their facilities specific action or response is requested at this time.
If further NRC evaluations so indicate, an IE Bulletin will be issued to recommend or request specific licensee actions.
If you have questions regarding this matter, please contact this office.
Sincerely, WY kw j
yce H. Grier rector
Enclosures:
1.
IE Circular No. 79-10 2.
List of IE Circulars Issued in Last Twelve Months b0 7907109 3 8
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ENCLOSURE 1 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE Oc INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 IE Circular No. 79-10 Date:
June 26, 1979 Page 1 of 2 PIPEFITTINGS MANUFACTURED FROM UNACCEPTABLE MATERIAL Description of Circumstances:
Liberty Equipment and Supply Company of Kennewick, Washington and Tube Turns Division, Chemetron Corporation of Louisville, Kentucky reported on April 4 and 12, 1979, 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 fitt".ngs may crack when welded.
Tube Turns received 3.500 OD x.250W pipe from U. S. Steel - Lorain -
identified as V. 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 wall elbows and 2"
.237 wall 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 and each is identified by Tube Turns Lot No. W6719.
Shipment r
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 rovided to the nuclear power plants listed below.
U.S.
Steel has tested about one hundred and fifty (150) loose and installed fittings at the seven sites noted by an asterisk.
- Grand Gulf
- Zimmer
- Fhipps Bend
- Waterford III
- Brown's Ferry Midland Limerick 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 advi d ' u ;c; M + - - '
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m pipefitting receiving documents for the and determine if fittings manufactured b DUPLICATE DOCUMENT identified as Tube Turn Lot W5719.
If s were 'eceived, appropriate corrective ac Entire document previously entered into system under:
O410011 ANO No. of pages:
b 3Io 00{
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