ML19224C969
| ML19224C969 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 06/26/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Tallman W PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| References | |
| NUDOCS 7907100371 | |
| Download: ML19224C969 (1) | |
Text
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UNITED STATES 8\\,7 ). g(' j NUCLEAR REGULATORY COMMISSIOl\\.
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C REGION I S',
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631 PARK AVENUE
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KING OF PRUSSIA, PENNSYLVANIA 9406 h,
Jun; 26, 1979 Docket Nos. 50-443 50-444 Public Service Company of New Hampshire ATTN:
Mr. W. C. Tallman President 1000 Elm Street Manchester, New Hampshire 03105 Gentlemen:
The enclosed IE Circular 79-10 is p,ovided as an early notification of a possibly significant matter.
It is expected that recipients will review the information for possible applicability to their facilities.
No specific acticn 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, M M lll, hk yce H. Grier
" rector
Enclosures:
1.
IE Circular No. 79-10 2.
List of IE Ci)- 'lars Issued in Last Twelve Months cc w/encls:
John D. Haseltine, Project Manager 315 3'JC 790710937,
ENCLOSURE 1 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, ".C 20555 IE Circular No. 79-10 Date:
June 26, 1979 Page 1 of 2 FIPEFITTINGS 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 pioe 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 Tui.is received 3.500 0D 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 foe-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 fit ings.
Approximately 27,000 fittir.gs were produced and each is ir itified Tube Turns Lot No. W6719.
Shipment of 1hese fittings started March o 1978, and it is estimated all were shipped tefore the end of 1978.
On May 10, 1979, the Tube Tuins 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 fifty (150) loose and installed fittings at the oeven sites noted by an asterisk.
- Grand Gulf
- Zimmer
- Phipp xnf
- Waterford III
- Browr 's Ferry Midland Limerick Shoreham
- LaSalle Sequoyah
- Brunswic k Hartsville Bellefonte On June 1, 1979, the Tube Turns Livision reported to the NRC via telephone that of the 160 fittings tested at Nuclear Power Plants, three (3) pieces were four.d to have a high carbon content and were replaced.
All cons truction permit holders are 7
- 4%ueu,im,nff heir ? } 5
'5 I) pipefitting receiving documents for 1 DUPLICATE DOCUMENT r
and determine if fittings manufactur.
identified as Tube Turn Lot W6719.
l Entire doc were received, apnropriate correctiv i into system t nder rd
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