ML20058J508
| ML20058J508 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 12/07/1993 |
| From: | Beach A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Cottle W HOUSTON LIGHTING & POWER CO. |
| References | |
| NUDOCS 9312140136 | |
| Download: ML20058J508 (5) | |
See also: IR 05000498/1993030
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NUCLEAR REGULA TORY COMMISSION
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g .- 7 1993
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Dockets:
50-498
50-499
Licenses: NPF-76
NPF-80
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Houston Lighting & Power Company
ATTN: William T. Cottle, Group
Vice President, Nuclear
P.0. Box 289
Wadsworth, Texas 77483
SUBJECT: NRC INSPECTION REPORT 50-498/93-30; 50-499/93-30
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Thank you for your letter of November 24, 1993, in response to our
letter and Notice of Violation dated October 27, 1993. We have reviewed your
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reply and find it responsive to the concerns raised in our Notice of
Violation. We will review the implementation of your corrective actions
during a future inspection to determine that full compliance has been achieved
and will be maintained.
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Sincerely,
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. Bill Beach, Director
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Division of Reactor Projects
cc:
Houston Lighting & Power Company
ATTN: James J. Sheppard, General Manager
Nucleer Licensing
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P.O. Box 289
Wadsworth, Texas 77483
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Houston Lighting & Power Company
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City of Austin
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Electric Utility Department
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ATTN:
J. C. Lanier/M. B. Lee
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721 Barton Springs Road
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City Public Service Board
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ATIN:
K. J. Fiedler/M. T. Hardt
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P.O. Box 1771
San Antonio, Texas 78296
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Newman & Holtzinger, P. C.
ATTN: Jack R. Newman, Esq.
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1615 L Street, NW
Washington, D.C.
20036
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Central Power and Light Company
ATIN:
G. E. Vaughn/T. M. Puckett
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P.O. Box 2121
Corpus Christi, Texas 78403
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Records Center
700 Galleria Parkway
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Atlanta, Georgia 30339-5957
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Mr. Joseph M. Hendrie
50 Be11 port Lane
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Bellport, New York 11713
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Bureau of Radiation Control
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State of Texas
1100 West 49th Street
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Judge, Matagorda County
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Matagorda County Courthouse
1700 Seventh Street
Bay City Texas 77414
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Licensing Representative
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Houston Lighting & Power Company
Suite 610
Three Metro Center
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Bethesda, Maryland 20814.
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Houston Lighting & Power Company
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Houston Lighting & Power Company
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ATTN: Rufus S. Scott, Associate
General Counsel
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P.0, Box 61867
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Houston, Texas 77208
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Houston Lighting & Power Company
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DEC - T l993
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bcc to DMB (IE01)
bcc distrib. by RIV:
J. L. Milhoan
Resident inspector
Section Chief (DRP/A)
Lisa Shea, RM/ALF, MS: HNBB 4503
MIS System
DRSS-FIPS
RIV File
Project Engineer (DRP/A)
R. Bachmann, OGC, MS: 15-B-18
Section Chief (DRP/TSS)
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Houston Lighting & Power Company
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DEC - T 1993
bcc to DMB (IE01) \\(
bec distrib. by RIV:
J. L. Milhoan
Resident Inspector
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Section Chief (DRP/A)
Lisa Shea, RM/ALF, MS: MNBB 4503
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MIS System
DRSS-FIPS
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Project Engineer (DRP/A)
R. Bachmann, OGC, MS: 15-B-18
Section Chief (DRP/TSS)
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The Light
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c o m p a nySouth Texas Project Electric Generating Station
P. o. Box 289 Wadsworth. Texas 77483
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November 24, 1993
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ST-HL-AE-4633
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File No.:
G02.04
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10CFR2.201
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U.
S. Nuclear Regulator- Commissa h
Attention:
Document Control Desk
20555
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South Texas Project
Units 1 & 2
Docket No. STN 50-498 & 50-499
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Reply to Notice of Violation 9330-02
Regarding the Installation of Non-Identical Replacement
Parts Without Proper Engineerino Evaluation and Modification
Houston Lighting & Power has reviewed Notice of Violation 9330-02,
dated October 27, 1993 regarding the installation of non-identical
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replacement
parts
without
proper
engineering
evaluation
and
modification and submits the attached reply.
If there are any questions please contact Mr.
S.
M.
Head at
(512) 972-7136 or me at (512) 972-8757.
J.
J.
Sheppard
General Manager,
Nuclear Licensing
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Attachment:
Reply to Notice of Violation 9330-02
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Panject Manager on Uchalf of the Participants in the South letas Project
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ST-HL-AE-4633
' Houston Lighting & Power Company
South Texas Project Electric Generating Station
File No.:
G02.04
Page 2'
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Regional Administrator, Region IV
Rufus
S.= Scott
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. U. S. Nuclear Regulatory Commission
Associate General Counsel
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611'Ryan Plaza Drive, Suite 400
Houston Lighting & Power Company-
Arlington, TX
76011
P.
O. Box 61867
Houston, TX
77208
Lawrence E.
Kokajko
Institute of Nuclear Power,
' Project Manager
Operations
Records Center
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..U.
S. Nuclear Regulatory Commission
700 Galleria Parkway
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20555 13H15
Atlanta, GA
30339-5957
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David P.
Loveless
Dr. Joseph M. Hendrie
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Sr. Resident Inspector
50 Bellport Lane
c/o U.S.
Nuclear Regulatory Comm.
Bellport, NY
11713
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P.
O. Box 910
Bay City, TX
77404-910
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J.
R.
Newman, Esquire
'D.
K.
Lacker
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Newman & Holtzinger,
P.C.,
STE 1000
Bureau of Radiation Control.
1615 L Street,
N.W.
Texas Department of Health
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20036
1100 West 49th Street
Austin, TX
78756-3189
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D.
E. Ward /T.
M.
Puckett
Central Power and Light Company
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P. O. Box 2121
Corpus Christi, TX
78403
J.
C. Lanier/M.
B.
Lee
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City of Austin
Electric Utility Department
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721 Barton Springs Road
Austin, TX
78704
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K. J.
Fiedler/M.
T.
Hardt
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City Public Service
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P. O.
Box 1771
San Antonio, TX
78296
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Attachment
ST-HL-AE-4633
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Page 1 of 3
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Statement of Violation-
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Technical Specification 6.8.1.a states, in part, that
written procedures shall be established, implemented, and
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maintained including the applicable procedures recommended
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in Appendix A of Regulatory Guide 1.33, Revision 2,
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February 197 8.
Item 9.a of Appendix A states, in part,
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" Maintenance.that can affect the performance of safety-
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related equipment should be properly preplanned and
performed in accordance with written procedures,
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documented instructions, or drawings appropriate to the
circumstances."
A note to Step 6.9.2.A of Operations
Engineering Procedure OEP 6.03Q, Revision 7,
" Design
Document Change Control,"
implements.this requirement for
modification work and states, " Items tagged with ECNP/ MOD
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Hold tag shall not be installed until a ECNP/ MOD package
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is issued authorizing the use of a given part."
Contrary to the above, on or about June 7,
1993,
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maintenance personnel installed a replacement reverse
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power relay, which had been tagged with an engineering
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change notice / modification package (ECNP/ MOD) hold tag, in
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the Standby Diesel Generator 23 control panel, without an
ECNP/ MOD package issued authorizing its use.
This is a Severity Level IV violation.
(Supplement I)
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(499/9330-02)
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II.
Houston Lichtinc & Power Position:
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Houston Lighting & Power (HL&P) concurs that the violation
occurred.
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III.
Reason for Violation:
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The non-safety-related replacement relay was installed
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without modification documentation because the on-shift
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engineer whc was contacted regarding the ECNP/ MOD Hold Tag
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attached to the relay. improperly responded to maintenance
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that the associated Document Change Notice (DCN).was
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sufficient authorization to proceed with installation.
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The cause of the improper response was a lack of training
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of the on-shift engineer who was contacted.
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Attachment
ST-HL-AE-4633
Page 2 of 3
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HL&P also determined during the investigation of this
violation that a sepatale problem existed in that'the
applicable vendor wiring diagram (contained in the SDG
Generator Control Panel Instruction Manual) did not match
the original reverse power relay configuration.
The
vendor wiring diagram showed the relays wired for A-B-C
phase rotation, but the relays had been internally
modified to accommodate the C-B-A rotation. 'This
situation caused the reverse power trips which occurred
during post maintenance testing of Diesel Generator 23.
The most likely cause was a failure on the part.of the
equipment supplier to properly document the internal
modification to the relay.
This problem is not reportable
under 10 CFR Part 21.
IV.
Corrective Actions:
The corrective actions listed below address the violation,
the separately identified internal wiring problem, and the
overall " Engineering Hold" program enhancements.
1.
Appropriate modification documentation has been
completed for the reverse power relay in Standby
Diesel Generator 23.
2.
The engineers currently on-shift have been trained on
the programmatic aspects of the ECNP/ MOD' Hold Tag
program.
The engineers who are not currently on-
shift will be trained upon their return to shift
duties.
The remaining engineers will be trained by-
December 10, 1993.
3.
The En-Tronic Control System Instruction Manual
(4041/8041-01009-CEO) for the Standby Diesel
Generator Control Panels has been amended to correct
the wiring diagram for the reverse power relays.
4.
A training bulletin has been issued to appropriate
pcrsonnel in the Maintenance Department to explain
and emphasize the importance of the Engineering
Notification and ECNP/ MOD Hold. Tagging program.
This
bulletin also emphasized the importance of
maintaining a questioning attitude when performing
work.
5.
Engineering will review the electrical power
distribution systems at STP to determine if there are
other negative phase sequence relays which may be
affected.
This action will be completed prior to
Mode 4 on either unit.
IR-93 d)-324.001
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Attachment
ST-HL-AE-4633
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Page 3 of 3
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6.
Procedures and databaras applicable to the process of
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ensuring engineering totifications and engineering
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holds on material will be modified as follows:
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To make the procram easier to anderstand and
a.
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-use, OPGP03-ZG-0001, " Material Control," has
been revised to specify.the key requirements of
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the overall program.
b.
To clearly identify when engineering involvement
is required, the Material Management System
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(MMS) database has been revised to support the
designation of HL&P Part Numbers (class bins) as
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requiring " Engineering Notification," or on
" Engineering Hold."
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7.
An integrated Replacement Parts program will be
developed to enhance.the overall engineering
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notification and engineering hold program, improve
the plant personnel understanding of the process and
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provide timely support to Operations and Maintenance.
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This action will be completed by May 31, 1994.
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V.
Date of Full Compliance:
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HL&P is in full compliance.
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VI.
Additional Information:
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During the testing of the replacement relays, improper.
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polarity (due to the difference in phase rotation between
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the originally installed relay and that assumed by the
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test procedure, which was based upon the vendor wiring
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diagram.) was noted by the technician, but not identified
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as a problem.
The calibration procedure applicable to the
reverse power relay has been revised to account for the
proper polarity.
As stated in the corrective-actions
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above, a training bulletin has been issued that emphasized
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the importance of maintaining a questioning attitude.
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n- 93 \\9 3 -3.* 4,001
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