ML20044C447
| ML20044C447 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 03/17/1993 |
| From: | Collins S NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Hall D HOUSTON LIGHTING & POWER CO. |
| Shared Package | |
| ML20044C448 | List: |
| References | |
| NUDOCS 9303230048 | |
| Download: ML20044C447 (5) | |
See also: IR 05000498/1993008
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UNIT E D STATES
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NUCLEAR REGULATORY COMMISSION
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REGION 4V
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611 RYAN PLAZA DRIVE, SUITE 400
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ARLINGTON, TEXAS 76011-8064
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MAR l T 1993
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Dockets: 50-498
50-499
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Licenses: NPF-76
NPF-80
EA 93-047
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Houston Lighting & Power Company
ATTN: Donald P. Hall, Group
Vice President, Nuclear
P.O. Box 1700
Houston, Texas 77251
SUBJECT:
NRC INSPECTION REPORT 50-498/93-08; 50-499/93-08
This refers to the inspection conducted by Mr. H. Runyan of this office on
February 17-19 and 23-26, 1993. The inspection included a review of
activities authorized for your South Texas-Project, Units 1 and 2, facility.
At the conclusion of the inspection, the findings were discussed with you and
those members of your staff identified in the enclosed report.
The inspection focused on issues associated with recent problems that had
developed in your program for the testing and maintenance of motor-operated
valves. Within this area, the. inspection consisted of selective examinations
of procedures and representative records, interviews with personnel, and
observation of activities in progress.
Three apparent violations were identified and are being considered for
escalated enforcement action in accordance with the " General Statement of
Policy and Procedure for NRC Enforcement Actions" (Enforcement Policy),
10 CFR 2 Appendix C (1992). Accordingly, no Notice of Violation is presently -
being issued for these inspections findings.
Please be advised that the
number and characterization of the apparent violations described in the
enclosed inspection report may change as a result of further NRC review.
The first apparent violation involved operation of Unit 2 in violation of
Technical Specification 3.5.2.
During the period of April 1989.to October
1990, the Train A low head safety injection isolation valve to reactor coolant
system cold leg, SI-31A, was inoperable.
Following a loss of coolant
accident, this condition would have prevented a transfer to hot leg
recirculation as assumed in the safety analysis.
The second apparent violation involved the failure to take corrective actions
in accordance with 10 CFR 50, Appendix B, Criterion XVI, following the initial
failure of valve SI-31A, which subsequently led to a recent failure of the
same valve under apparently identical circumstances.
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The third apparent violation involved the apparent failure to perform a proper
operability determination of five residual heat removal system (RHR) suction
isolation motor-operated valves that were operated with torque loadings in
excess of the vendor qualified rating. The initial corrective action response
to this issue appeared contrary to 10 CFR 50, Appendix 8, Criterion XVI. This
apparent violation was similar to a previous violation issued in NRC
Inspection Report 50-498/92-06; 50-499/92-06, which involved motor-operated
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valves that were receiving excessive applications of thrust.
An enforcement conference to discuss these apparent violations has been
scheduled for March 25, 1993. The purposes of this conference are to discuss
the apparent violations, their cause and safety significance; to provide you
the opportunity to point out any errors in our inspection report; to provide
an opportunity for you to present your proposed corrective actions; and to
discuss any other information that will help us determine the appropriate
enforcement action in accordance with the Enforcement Policy.
In particular,
we would like for you to address at the conference why the problems with
Motor-0perated Valve SI-31A were not identified and as a result, the valve was
not repaired for a period of 18 months. Also, please provide further
justification for lowering the maximum expected differential pressure for the
RHR suction isolation valves, and explain what actions wili be taken to assure
the long-term operability of the RHR suction isolation valves. You will be
advised by separate correspondence of the results of our deliberations on
these matters. No response regarding these apparent violations is required at
this time.
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.
Should you have any questions concerning this inspection, we will be pleased
to discuss them with you.
Sin rely,
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Samuel J. Co lins, Director
Division of eactor Safety
Enclosure:
Appendix - NRC Inspection Report
50-498/93-08 w/ Attachment
50-499/93-08 w/ Attachment
cc w/ enclosure:
Houston Lighting & Power Company
ATTN: William J. Jump, Manager
Nuclear Licensing
P.O. Box 289
Wadsworth, Texas 77483
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City of. Austin
Electric. Utility Department
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ATTN:
J. C. Lanier/M. B. Lee
P.O. Box 1088
City Public Service Board.
ATTN:
R. J. Costello/M. T. Hardt
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P.O. Box 1771
San Antonio, Texas 78296
Newman & Holtzinger, P. C.
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ATTN: Jack R. Newman, Esq.
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1615'l Street, NW
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Washington, D.C.
20036
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entral Power and Light Company
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ATTN:
D. E. Ward /T. M. Puckett
P.O. Box 2121
Corpus Christi, Texas 78403
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Records Center
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1100 circle 75 Parkway-
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Atlanta, Georgia 30339-3064
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Mr. Joseph M. Hendrie.
50 Be11 port Lane
Be11 port, New York 11713
Bureau of Radiation Control
State of.. Texas
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1101 West'49th Street
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Judge, Matagorda County
Matagorda County Courthouse
1700 Seventh Street
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Bay City, Texas 77414
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Licensing Representative
Houston Lighting'& Power Company
Suite-610
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Three Metro Center
- Bethesda,' Maryland 20814
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-Houston Lighting & Power Company
. ATTN: Rufus S. Scott, Associate
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General; Counsel
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P.O. Box 61867.
Houston, Texas --77208
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