ML20099L721
| ML20099L721 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 02/28/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NCR-2707, NUDOCS 8503210113 | |
| Download: ML20099L721 (2) | |
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.7 TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 374o1 400 Chestnut Street Tower II February 28, 1985 BLRD-50-43844-06 85 Mag g a 7 *. N 0 BLRD-50-43944-05 U.S. Nuclear Regulatory Commission Region II Attn:
Dr. J. Nelson Grace, Regional Adninistrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323
Dear Dr. Grace:
BELLEFWTE NUCLEAR PLANT WITS 1 AND 2 - LENGIIE T FLEX CONDUIT EXPE!BIWS Not AS SPECIFIED - BLRD-50-43844-06, BLRD-50-43944 FOURTH INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector P. E. Fredrickson on January 12, 1984 in accordance with 10 TR 50.55(e) as NCR 2707. This was followed by our interim reports dated February 7, August 10 and December 11, 1984.
Enclosed is our fourth interim report.
We expect to submit our next report on e about December 27, 1985.
If you have any questions, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY h
J. W. Hufham, Manager Licensing and Regulations Enclosure cc:
Mr. James Tayle, Director (Enclosure)
Office of Inspection and Enforoemmt U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 circle.75 Parkway, Suite 1500 Atlanta, Georgia 30339 X.527 8503210113 850228 PDR ADOCK 05000438 s
PDR I l 3
s OFFICIAL COPY An Equal Opportunity Employer
EN(LTURE BELLEFWTE NUCLEAR PLANT INITS 1 AND 2 LENGrHS T FEX CONDUIT EXTENSIONS NOT AS SPECIFIED BLRD-50-43 8/84-06, BLRD-50-439/84-05 NCR 2707 10 TR 50.55(e)
FOURTH INTERIM REPORT Description of Deficiency Flexible conduit extensions of the following conduit do not meet the j
thermal criterion for length:
Existing Flexible Minimta Specified Condut t Size Conduit Extension Extension ID (inches)
Lergth Exposed (inches)
Length (inches) 1 R4-1959-B 1-1/2 25.5 32 1 R3-1961-B 1-1/2 27 32 1 R3-1962-B 1-1/2 24 32 1R3-1964-B 1-1/2 25 32 1 R3-1965-B 1-1/2 21 24 1 R3-1341-B 0.75 22.75 24 General construction specification G-40, " Installing Electrical Conduit
- Systems and Conduit Boxes," revision 5, section 3.2.6.3, " Thermal Movement Consideration," specifies that, where flexible conduit is to be connected to itens which are part of a mechanical system designed for thermal movement, it. should be used to compensate for any expansion and contraction.
The apparent cause of this deficiency was failure to specify that the thermal movement consideration should be applied to these assenblies.
Interim Progress TVA has compiled a list of mechanical systens designed for thermal movement and is now in the process of reviewing these systems in mder to determine the extent of any required work.
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