ML20056D124
| ML20056D124 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 07/21/1993 |
| From: | Julian C NRC Office of Inspection & Enforcement (IE Region II) |
| To: | Medford M Tennessee Valley Authority |
| Shared Package | |
| ML20056D125 | List: |
| References | |
| NUDOCS 9308050017 | |
| Download: ML20056D124 (3) | |
See also: IR 05000327/1993026
Text
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Docket Nos. 50-327, 50-328
Tennessee Valley Authority
ATTN: Dr. Mark 0. Medford
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Vice President, Technical
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Support
3B Lookout Place
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1101 Market Street
Chattanooga, TN 37402-2801
Gentlemen:
,
,
SUBJECT:
NRC INSPECTION REPORT N0. 50-327/93-26 AND 50-328/93-26
This refers to the inspection conducted by G. MacDonald of this office on
June 14-23, 1993. The inspection included a review of activities authorized
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for your Sequoyah facility. At the conclusion of the inspection, the findings
were discussed with those members of your staff identified in the report.
Areas examined during the inspection are identified in the report. Within
these areas, the inspection consisted of selective examinations of procedures
and representative records, interviews with personnel, and observation of
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activities in progress.
Within the scope of the inspection, violations or deviations were not identi-
fled.
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An event occurred on June 14, 1993, where an incorrectly installed current
transformer in circuit breaker 1614 tripped during a reactor coolant pump
motor start causing an unplanned challenge to the emergency diesel generators.
We are concerned about this problem because it demonstrated a breakdown in
your control of maintenance in the areas of configuration management and post
maintenance testing.
This event was very similar to an incident which occurred on December 19,
1991. During the December 19, 1991, incident an incorrectly installed current
transformer led to a trip of the main generator.
This indicates that your
corrective actions for the December 19, 1991, incident were inadequate to
prevent recurrence. We request that you respond to this item and provide your
proposed corrective action.
In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of
this letter and its enclosure will be placed in the NRC Public Document Room.
The responses directed by this letter are not subject to the clearance
procedures of the Office of Management and Budget as required by the Paperwork
!
Reduction Act of 1980, Pub. L. No.96-511.
9308050017 930721
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ADOCK 05000327
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Tennessee Valley Authority
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JUL 21 toc 3
Should you have any questions concerning this letter, please contact us.
Sincerely,
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Caudie A. Julian,- Chief
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Engineering Branch
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Division of Reactor Safety
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Enclosure:
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NRC Inspection Report
cc w/ encl:
W. H. Kennoy, Director
Tennessee Valley Authority
ET 12A
400 West Summit Hill Drive
Knoxville, TN 37902
R. M. Eytchison, Vice President
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Nuclear Operations
Tennessee Valley Authority
3B Lookout Place
1101 Market Street
Chattanooga, TN 37402-2801
B. S. Schofield, Manager
Nuclear Licensing and
Regulatory Affairs
Tennessee Valley Authority
5B Lookout Place .
1101 Market Street
Chattanooga, TN 37402-2801
Robert.Fenech, Vice President
Sequoyah Nuclear Plant
Tennessee Valley Authority
P.'O. Box 2000
Soddy-Daisy, TN 37379
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TVA Representative
Tennessee Valley Authority
Rockville Office
11921 Rockville Pike
Suite 402
Rockville, MD 20852
(cc w/enci cont'd - See page 3)
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Tennessee Valley Authority
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WL 2 l 1993
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(cc w/ encl cont'd)
Ralph H. Shell
Site Licensing Manager
Sequoyah Nuclear Plant
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P. O. Box 2000
Soddy-Daisy, TN 37379
Michael H. Mobley, Director
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Division of Radiological Health
3rd Floor, L and C Annex
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401 Church Street
Nashville, TN 37243-1532
General Counsel
Tennessee Valley Authority
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ET IIH
400 West Summit Hill Drive
Knoxville, TN 37902
County Judge
Hamilton County Courthouse
Chattanooga, TN 37402
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bcc w/ encl:
E. W. Herschoff, RII
J. R. Johnson, RII
P. J. Kellogg, RII
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S. E. Sparks, RII
B. M. Bordenick, OGC
D. E. LaBarge, NRR
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G. Lainas, NRR
F. Hebdon, NRR
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Document Control Desk
NRC Resident Inspector
U.S. Nuclear Regulatory Commission
2600 Igou Ferry
Soddy-Daisy, TN 37379
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FILE NAME:
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