ML20099D655
| ML20099D655 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 10/24/1984 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-84 NUDOCS 8411200474 | |
| Download: ML20099D655 (2) | |
Text
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w TENNESSEE VALLEY ' AUTHORITY -
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CHATTANOOGA 4 TENNESSEE 374ol.
400 Chestnut Street Tower II.
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84 BCI 2%,poj,; th61984:
BLRD-50-438/83-13
~
BLRD-50-439/83-09
. U.S. - Nuclear Regulatory Comission:
' Region II L.
Attn:
Mr'. James P. O'Reilly, Regional Administrator 101 Marietta Street, NW, Suite 2900
' Atlanta, Georgia : 30323
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - IMPROPERLY' QUALIFIED N0ZZLE LOADS
- BLRD-50-438/83-13, BLRD-50-439/83-09'- THIRD INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector D. Verrelli on January 24, 1983 in accordance with'10 CFR 50.55(e) as NCR BLN CEB 8220. This was followed by our interim reports dated February 16 and April 27, 1983 Enclosed is our third interim report. We-expect to submit our next report by August 23, 1985. Please note that in 4'
our previous reports, we inadvertently omitted the fact that 10 CFR Part 21 i
is' also applicable to this deficiency. A several-day delay of this submittal was discussed with Inspector. S. Weise on October. 19,-1984.
i If you have any questions, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY DS % m a
[gt L. M. Mills, Manager l
Nuclear Licensing-Enclosure I
cc:
Mr. Richard C. DeYoung, Director (Enclosure) l Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission-Washington, D.C.
20555
(
' Records Center (Enclosure) l Institute of Nuclear Power Operations l
1100 Circle 75 Parkway, Suite 1500 i
Atlanta, Georgia 30339 l.
Yl[ICIAL COPY 841
?"1200474841024aoockosooog g:4 l
An Equal Opportunity Employer
ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 IMPROPERLY QUALIFIED N0ZZLE LOADS BLRD-50-438/83-13, ~ BLRD-50-439/83-09 '
NCR BLN CEB 8220 10 CFR 50.55(e)
THIRD INTERIM REPORT Description of Deficiency The original-issue of Nonconformance Report (NCR) BLN CEB 8220 identified six piping analysis problems done by Teledyne Engineering Services of Waltham, Massachusetts, which were. issued using improperly qualified nozzle loads. Typically for these type problems, evaluations are made for normal, upset and faulted conditions. However, in these six problems, only the faulted condition was evaluated.
The revision of this NCR expands its scope.to include piping analysis problems done by PMB Systems Engineering Incorporated of San Francisco, California, and by TVA analysis. This revision also cate6orizes the erroneous analysis by cause of the error such that there are two distinct groups: those caused by use of improper references to obtain allowable nozzle loads and those caused by a failure to follow procedures for.
obtaining rozzle loads.
An example of the use of an hmproper reference is found in analysis problem N4-1NV-F on the Makeup and Purification (MU/P) System. In this problem concerning qualification of the makeup pump discharge nozzle, the Babcock and Wilcox (B&W) specification 08-1130000005-06 was used but this specification applies only to the reactor building spray pumps.
Examples of failure to. follow procedures for obtaining rozzle loads are problems listed in the original version of this NCR (N4-1ND-A, N4-2ND-A, N4-1ND-B, N4-2ND-B, N4-1NV-A, N4-1(2)NV-M) on the Decay Heat Removal and MU/P Systems which qualified the equipment nozzles for the faulted condition only. Another example is found in problem N4-2KC-D on the Component Cooling Water System where normal, upset, and faulted conditions were evaluated but the required factors needed to obtain the normal, upset and faulted condition nozzle allowables were not used.
Interim Progress TVA has completed its initial investigation of all affected problems, has identified all the deficient problems, and is in the process of correcting the deficiencies.
To pmvent a recurrence of this deficiency, the Bellefonte Rigorous Piping Analysis Handbook has been revised to give specific instructions for equipment nozzle qualification, and TVA and Gilbert / Commonwealth Associates personnel have been given instructional classes in proper equipment nozzle qualification.. (Gilbert / Commonwealth has been contracted to do analysis for Bellefonte. The contracts for Teledyne and PMB have expired.) New TVA employees as well as Impell contract personnel (who will alao be working on Bellefonte analysis) are to attend the instructional classes in proper equipment nozzle qualification.
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