ML20214D986
| ML20214D986 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 02/14/1986 |
| From: | Gridley R TENNESSEE VALLEY AUTHORITY |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8603060240 | |
| Download: ML20214D986 (2) | |
Text
o TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 374o1 SN 151B Lookout Place February 14, 1986
{
r, tu U.S. Nuclear Regulatory Commission 2
Region II T
Attn:
Dr. J. Nelson Graco, Regional Administrator 101 Marietta Street, NW, Suite 2900
[
Atlanta, Georgia 30323 y
N
Dear Dr. Grace:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - SEISMIC QUALIFICATION OF B&W EQUIPMENT IN TVA FANELS - FINAL REPORT The subject deficiency was initially reported to NRC-0IE Inspector R. W. Wright on November 24, 1980 in accordance with 10 CFR 50.55(e) as NCR BLN BLP 8011. This was followed by our interim reports dated December 23, 1980; April 23 and October 28, 1981; February 18, May 18, July 16, and September 24, 1982; February 7 and September 7,1983; June 28 and December 17, 1984; and July 2, and October 10, 1985.
Enclosed is our final reporL.
If you have any questions, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours.
TENNESSEE V LEY AUTHORITY R.
Gridley Manager of L censing Enclosure cc Mr. James Taylor, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Mr. H. B. Barkley (Enclosure) 205 Pirnt Project Services J
P.0. Box 10935 j
- 1. )h'/th Lynchburg, Virginia 24506-0935 Records Center (Enclosure)
Institute of Nuclear Power Operations a
1100 circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 388'kB88R8%88$ao S
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1 An Equal Opportunity Employer l
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ENCLOSURE BELLEFONTE NUCLEAR PLANT UNIIS 1 AND 2 SEISMIC QUALIFICATION OF B&W EQUIPMENT ON TVA PANELS NCR BLN BLP 8011 10 CFR 50.55(e)
FINAL REPORT J
Description of Deficiency A number of Babcock and Wilcox (B&W) supplied instruments are intended for installation on TVA's freestanding, open, local instrument panols.
Because of impreciso specifications in a TVA procurement document, the instrumentation listed below and supplied by B&W has not been seismically qualified to a responso spectra that is compatible with the response spectra for TVA local instrument panels.
Consequently, the responsibility for this deficiency is TVA's.
A list of the instruments to be qualified follows:
TyE2 of Device Vendor Vendor ID No.
Differential pressure transmitter Bailey Motor Co.
Type N1BQ86221 Differential pressure transmitter Bailey Motor Co.
Type N2BQ74221 Differential pressure transmitter Bailey Meter Co.
Type N2BQ76221 Differential pressure transmitter Bailey Meter Co.
Type N2BQ85221 Differential pressure transmitter Bailey Meter Co.
Type N2BQ86221 Pressure transmitter Bailey Meter Co.
Type N2KS69221 Indicator meter Bailey Motor Co.
ES-342 Operator station Bailey Meter Co.
TT-10 Safety Implications As reported in our previous responses, the equipment in question was seismically tested to the higher "g" values of the correct response spectra.
The results showed that all equipment is soismically quallflod, except the N2BQ74221 and N2BQ86221 transmitters and the TT-10 operator station.
A contract was set up with Wyle Laboratory to retest the three devices. Wyle has submitted the test reports for the three retested devices.
The test results and a reanalysis incorporating the correct response spectra show that the retested devices are seismically qualified and suitable for service of that response spectra.
o I
TVA has determined that the deficiency is attributable to a misinterpretation by th6 contractor of the seismic interface requirements caused by TVA's j
imprecise procurement specifications. However, we have established that the i
cited deficiency is an isolated occurrence limited to the cited devices.
Due to the isolated nature of the problem and the fact that all affected devices proved to be satisfactory for use as-is, TVA no longer considers this deficiency to be reportable under the provisions of 10 CFR 50.55(e).
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