ML20058J508

Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Repts 50-498/93-30 & 50-499/93-30

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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Dockets: 50-498

50-499

Licenses: NPF-76

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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 j

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. l

Sincerely,

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. Bill Beach, Director .

Division of Reactor Projects

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Houston Lighting & Power Company

ATTN: James J. Sheppard, General Manager

Nucleer Licensing j

P.O. Box 289

Wadsworth, Texas 77483 '

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Houston Lighting & Power Company -2- 1

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City of Austin :l

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Electric Utility Department

ATTN: J. C. Lanier/M. B. Lee -!

721 Barton Springs Road

Austin, Texas 78704

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City Public Service Board '

ATIN: K. J. Fiedler/M. T. Hardt ,

P.O. Box 1771

San Antonio, Texas 78296

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Newman & Holtzinger, P. C.

ATTN: Jack R. Newman, Esq. l

1615 L Street, NW t

Washington, D.C. 20036 ll

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Central Power and Light Company

ATIN: G. E. Vaughn/T. M. Puckett

P.O. Box 2121 ll

Corpus Christi, Texas 78403 l

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INPO

Records Center

700 Galleria Parkway i

Atlanta, Georgia 30339-5957 .f

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Mr. Joseph M. Hendrie

50 Be11 port Lane

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Bellport, New York 11713 j

Bureau of Radiation Control  !

State of Texas  ;

1100 West 49th Street i

Austin, Texas 78756 l

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Judge, Matagorda County '

Matagorda County Courthouse  ;

1700 Seventh Street

Bay City Texas 77414 l

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Licensing Representative j

Houston Lighting & Power Company  ;

Suite 610

Three Metro Center l

Bethesda, Maryland 20814. t

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Houston Lighting & Power Company  ;

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ATTN: Rufus S. Scott, Associate

General Counsel  !

P.0, Box 61867 i

Houston, Texas 77208 [

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Houston Lighting & Power Company -3- 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 -3- DEC - T 1993  ;

bcc to DMB (IE01) \(

bec distrib. by RIV:

J. L. Milhoan Resident Inspector "

Section Chief (DRP/A) Lisa Shea, RM/ALF, MS: MNBB 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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The Light .

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Texas Project Electric Generating P.Station o. Box 289 Wadsworth. Texas 77483

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, November 24, 1993

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ST-HL-AE-4633 -

000,. INf7 // . File No.: G02.04

. 10CFR2.201

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U. S. Nuclear Regulator- Commissa h

Attention: Document Control Desk

Washington, DC 20555

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South Texas Project

Units 1 & 2

Docket No. STN 50-498 & 50-499  !

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 '

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 i

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Panject Manager on Uchalf of the Participants in the South letas Project  ;

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ST-HL-AE-4633

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' 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 l

. U. S. Nuclear Regulatory Commission Associate General Counsel  !

611'Ryan Plaza Drive, Suite 400 Houston Lighting & Power Company-  :

Arlington, TX 76011 P. O. Box 61867

Houston, TX 77208

Institute of Nuclear Power,

Lawrence E. Kokajko

' Project Manager Operations Records Center ,

..U. S. Nuclear Regulatory Commission 700 Galleria Parkway ,

Washington, DC 20555 13H15 Atlanta, GA 30339-5957 l

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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 'I

P. O. Box 910 f

Bay City, TX 77404-910  !

J. R. Newman, Esquire 'D. K. Lacker

Newman & Holtzinger, P.C., STE 1000 Bureau of Radiation Control. l

Texas Department of Health

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1615 L Street, N.W. r

Washington, DC 20036 1100 West 49th Street

Austin, TX 78756-3189 -l

D. E. Ward /T. M. Puckett

Central Power and Light Company ]

P. O. Box 2121

Corpus Christi, TX 78403  ;

J. C. Lanier/M. B. Lee

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City of Austin

Electric Utility Department

721 Barton Springs Road f

Austin, TX 78704 ,

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K. J. Fiedler/M. T. Hardt .;

City Public Service L

P. O. Box 1771

San Antonio, TX 78296  ;

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Attachment  ;

ST-HL-AE-4633

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I. Statement of Violation-

Technical Specification 6.8.1.a states, in part, that  !

written procedures shall be established, implemented, and  !

maintained including the applicable procedures recommended i

in Appendix A of Regulatory Guide 1.33, Revision 2,  !

February 197 8. Item 9.a of Appendix A states, in part,  !

" Maintenance.that can affect the performance of safety- l

related equipment should be properly preplanned and

performed in accordance with written procedures, l

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 ,

Hold tag shall not be installed until a ECNP/ MOD package  !

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is issued authorizing the use of a given part."

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Contrary to the above, on or about June 7, 1993,

maintenance personnel installed a replacement reverse ,

power relay, which had been tagged with an engineering i

change notice / modification package (ECNP/ MOD) hold tag, in j

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the Standby Diesel Generator 23 control panel, without an

ECNP/ MOD package issued authorizing its use.

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This is a Severity Level IV violation. (Supplement I) j

(499/9330-02) j

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II. Houston Lichtinc & Power Position: j

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Houston Lighting & Power (HL&P) concurs that the violation  ;

occurred. )

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III. Reason for Violation: f

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The non-safety-related replacement relay was installed J

without modification documentation because the on-shift ,

engineer whc was contacted regarding the ECNP/ MOD Hold Tag -!

attached to the relay. improperly responded to maintenance j

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that the associated Document Change Notice (DCN).was  ;

sufficient authorization to proceed with installation. -)

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

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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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ST-HL-AE-4633  !

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6. Procedures and databaras applicable to the process of i

ensuring engineering totifications and engineering i

holds on material will be modified as follows:  !

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a. To make the procram easier to anderstand and ,

-use, OPGP03-ZG-0001, " Material Control," has  :

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been revised to specify.the key requirements of

the overall program.  ;

b. To clearly identify when engineering involvement  :

is required, the Material Management System  !

(MMS) database has been revised to support the

designation of HL&P Part Numbers (class bins) as j

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 j

notification and engineering hold program, improve

the plant personnel understanding of the process and 'l

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: ,

HL&P is in full compliance.  ;

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VI. Additional Information: j

During the testing of the replacement relays, improper. 'l

polarity (due to the difference in phase rotation between .

the originally installed relay and that assumed by the  !

test procedure, which was based upon the vendor wiring l

diagram.) was noted by the technician, but not identified j

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 i

above, a training bulletin has been issued that emphasized j

the importance of maintaining a questioning attitude.  !

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