ML19247B073
| ML19247B073 | |
| Person / Time | |
|---|---|
| Site: | Catawba, Perkins, Cherokee  |
| Issue date: | 06/26/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Dail L DUKE POWER CO. |
| References | |
| NUDOCS 7908070131 | |
| Download: ML19247B073 (2) | |
Text
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NUCLE AR REGUL ATORY COMMISSION E'!
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g AT L ANT A. GEORGIA 30303 jW 2 61979 In Reply Refer To:
RII:JPO 50-413, 50-414 50-488, 50-489 ISO-492, f 50-491 50-490, 50-493 J
Duke Power Compsny Attn:
L. C, Da'.1, Vic e Pr esident Design ingineering P. O. Box 33189 Charlotte, North Carolina 28242 Gentlemen:
This Circular is provided ar an early notification of a possibly significant matter.
It is expected that recipients vill review the information for possible applicability to their facilities. No specific action or response is requested at this time.
If further NRC evaluations so indicate, an IE Bulletin vill be issutd to recccmend or regt est specific licensee actions.
If you have questions regarding this catter please contact the Director of the appropriate NRC Regional Of fice.
Sincerely, A9 x w._
M James P, O'Reilly Director
Enclosures:
1.
IE Ci rcular No. 79-10 2.
List of IE Circulars Issued in Last 12 Honths
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425 nn Lay 79080 70181#
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JliN. 6 l'
. Duke Power Compau; cc w/coel:
D. G. Beam, Project Manager Post Office Box 223 29710 Clover, South Carolina J. T. Moore, Project Manager Post Off2ce Box 422 29340 Caffney, South Carolina e
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425 23g
UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 June 26, 1979 IE Circular No. 79-10 (7906200171)
PIPEFIITINGS FANUFACTURED 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 beyoad the range allowed by AST" A-234 WPB.
These high carbon content f.ttings 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 wall elbows and 2"
.237 wall straight
- tees, ASIM A-234 WPB, were produced by Tube Turns.
Each length of pipe is twenty feet and makes from 20 to 30 fittings. Approximately 2;,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 tne nuclear power plant s listed below.
U.S.
Stee! has tested about one hundred and fifty (150) loose and installed fittings at toe seven sites noted by an asterisk.
- Grand Gulf
- Zi==er
- Phipps Bend
- Waterford III
- Brova'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 Tower Plants, three (3) pieces p;.
>" - 7 p laced. --
were found to have a high carbon co DUPLICATE DOCUMENT All construction permit holders are pipefitting receiving documents for
. re document previously entered and determine if fit t ings manuf act u system under:
identified as Tube Turn Lot W6719.
were received, appropriate correct 1 ANO_
fb Q/ 7/
I No. Of pages:
k i
425 236 cm
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