ML20149H014

Summary of 871207-11 Audit Re Implementation of Procedures for Train C Conduit Supports Less than or Equal to 2 Inches. Lists of Persons Involved W/Audit & Documents Reviewed Encl

ML20149H014
Person / Time
Site:	Comanche Peak
Issue date:	02/12/1988
From:	Terao D NRC OFFICE OF SPECIAL PROJECTS
To:	NRC OFFICE OF SPECIAL PROJECTS
References
NUDOCS 8802190061
Download: ML20149H014 (8)

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UNITED STATES

! n NUCLEAR REGULATORY COMMISSION N g i wAsmNoToN. o, c. 2oses

..... February 12, 1988 Docket Nos. 50:445 l and 50-446 APPLICANT: Texas Utilities Electric Company (TV Electric)

FACILITY: Comanche Peak Steam Electric (CPSES), Units 1 and 2

SUBJECT:

SUMARY OF AUDIT ON DECEMBER 7-11, 1987 - IMPLEMENTATION OF PROCEDURES FOR TRAIN C CONDUIT SUPPORTS LESS THAN OR EQUAL TO TWO INCHES On December 7-11, 1987, the NRC staff and its consultants conducted an audit at the CPSES site in Glen Rose, Texas of the application of design criteria and methodology developed for Train C conduits less than or equal to two inches in diameter and their supports (hereinafter referred to as "Train C conduit"). The Train C conduit design validation is being performed by Impell Corporation as a part of the TV Electric Corrective Action Program.

A list of persons involved with the audit is provic'ed in Enclosure 1.

The purpose of the staff audit was to assess the adequacy of Impell's imple-mentation of the design validation procedures and to further review selected i criteria and methodology. The audit consisted of:

1) a review of a sample of Impell's calculation packages, and

2) a plant inspection of selected supports and support systems reviewed in the above calculation packages.

In addition, discussions with Impell personnel regarding implementation of procedures, criteria and methodology were held.

Review of Calculation Packages The audit sample was selected from the Master Calcuhtion Log provided by the Impell Field Office. The audit team selected a total of 51 calculation and modification packages representing supports and support systems from the following buildings:

i Safeguards j Electrical Control Auxiliary '

Fuel Loading Service Water Containment Specific calculation packages were selected for review to ensure a representa-tion of each of the screening levels implemented by Impell in the design validation process.

8802190061 DR 080212 ADOCK 05000445 PDR

'. Sumary of Audit on 12/7-11/97 In the course of the implementation audit, the audit team l reviewed the latest >

Impell procedures and reviewed selected Train C criteria and methodology for practicality and effectiveness cf implementation (sre Enclosure 2).

Plant Inspection The audit team performed plant inspections of selected supports as a part of our audit. The inspection sample was selected from the :alculation packages.

The inspection sample covered all the screening levels implemented in the program, including modifications implemented as a result of the design validation process. The inspection sample included one or more of the supports associated with the calculation or modification package!..

Overall Findings Based on our audit, the team finds the following:

1) Implementation of the design validation program was conducted satis-factorily and in accordance with the progrcm instructions.

2) Validation of supports to date has been accomplished using Screening.

Levels 2 (Acceptable Supports), 4 (Seismic Capaci:y Check), 3 Seismic Analysis) and 3/6 (No Interaction Potential / Impact Evaluation)(.

3) Where implementation of Screening Level 6 required some judgerient in assessing interaction potential, the audit team found such judgement to be sound and, thus, concurs with that judgemer t.

Two discrepancies were noted by the audit team in the course of our audit which required action by the Impell field office. The disc epancies and corrective actions taken are discussed belcw:

1) Level 5 evaluation criterion (PI-0210-052-003), Rev. 4, Par. 4.3.8) specifies allowable stresses for fillet welds ard base metal in hot-rolled and cold-formed members. Review of the calculation audit sample indicated that only the stress in the weld was thecked and base-metal stress evaluations were not performed. In the case of welding to Unistrut, the base-metal stress was the governing stress.

Resolution: Impell reviewed all calculations performed to date involving field-welded Unistrut supports, and rrodified the calculations to include the base-metal stress evaluaticn. No inadequacies resulted, In addition, Impell conducted a training sessicn for the appropriate i analysts to provide assurance agair<st recurrence of this problem.

Conclusion:

l The audit team finds the resolution adequately resolves the concern and is, thus, acceptable, s

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Sumary of Audit on 12/7-11/87 -

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2) Calculation'A-02542 was.not reconciled with field modifications. The

,. problem 8 occurred when initially agreed-upon modifications could not be I validated by Level 5 calculation, and a new support location was re-comended. Interface between Support Design and Level 5 groups was not i completed. >

Resolution: Impell determined that this incident was'an-isolated one ano developed the following Action Plan:

a) Send notification letter to Level 5.

b) Incorporate new loads in calculation.

c) Review originator's calculations for similar inciderce.

d) Conduct training sessions to reinforce iriterfacing procedures.

Conclusion:

The audit team finds the resolution adequately resolves the concern and is, thus, acceptable.

A total of 80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br /> were involved with this audit.

I David Terao, Mechanical Engineer Comanche Peak Project Division s

Office of Special Projects

Enclosure:

1. List of Persons involved With Audit

2. List of Cocuments Reviewed cc: See next page l

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O f W. G. Counsil Comanche Peak Steam Electric Station Texas Utilities Electric Company Units 1 and 2 cc:

Jack R. Newman, Esq. Asst. Director for Inspec. Programs Newman & Holtzinger, P.C. Cumanche Peak Project Division Suite 1000 U.S. Nuclear Regulatory Comission 1615 L Street, N.W. P. O. Box 1029 ,

Washington, D.C. 20036 Granbury, Texas 76048 Robert A. Wooldridge, Esq. Regional Administrator, Region IV Wersham, Forsythe, Sampels & V.S. Nuclear Regulatory Comission Wooldridge 611 Ryan Plaza Drive, Suite 1000 2001 Bryan Tow n , Suite 2500 Arlington, Texas 76011 Dallas, Texas, 75201 ,

Lanny A. Sinkin Mr. Homer C. Schmidt Christic Institute Directe d Nuclear Services 1324 North Capitol Strnet Texas Utilities Electric Company Washington, D.C. 20002 Skywy Tower 400 North Olive Street, L.B. 81 Ms. Billie Pirner Garde Esq.

Dallas, Texas 75201 Government Accountability Project Midv'st Office Mr. Robert E. Ballard, Jr. 104 East Wisconsin Avenus-Director of Projects Appleton, Wisconsin 54911 Gibbs and Hill, Inc.

11 Penn Plaza New York, New York 10001 David R. Pigott, Esq.

Orrick, Herrington S Sutcliffe 600 Montgorrery Strut l Mr. R. S Howard San Francisco, teiifornia 94111 Westinghouse Electric Corporation P. O. Box 355 Anthny Z. Roisman Esq.

Pittsburgh, Pennsylvania 15230 Suite 600 1401 New York Avenue, IN ,

Renea Hic.ks, Esq. Washington, D.C. 20005 1 Assistant Attorney General Environments 1 Protection Division Robert Jablon P. O. Box 12548 Capitol Station Bonnie S. Blair i Austin, Texas 78711 Splegel & McDiarmid l 1350 New York Avenue, NW

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Mrs. Juanita Ellis, President Washington, D.C. 20005-4798 Citizens Association for Sound Energy ,

1426 South Polk George A. Parker, Chairman i Dallas, Texas 75224 Public Utility Committee Senior Citizens Ailiance Of Ms. Nancy H. Williams Tarrant County, Inc.

CYGAA Energy Services 6048 Wonder Drive 2121 N. California Blvd., Suite 390 Fort Worth. Texas 16133 1 Walnut Creek, CA 94596 '

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W. G. Counsil Comanche Peak Electric Station Texas Utilities Electric Company Units 1 and 2 i

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Joseph F. Fulbright  !

Fulbright & Jaworski 1301 McKinney Street Houston, Texas 77010 ,i l

Roger D. Walker Manager, Nuclear Licensing Texas Utilities Electric Company i Skyway Tower 400 North Olive Street, L.B. 81 Dallas, Texas 75201 Mr. Jack Redding c/o Bethesda Licensing Texas Utilities Electric Company 3 Metro Center, Suite 610 Bethesda, Maryland 20814 William A. Burchette Esq.

Counsel for Tex-La Electric Cooperative of Texas 1 Heron, Burchette, Ruckert & Rothwell l Suite 700 '

1025 Thomas Jefferson Street, NW l Washington 0.C. 20007 1 James P. McGaugby, Jr.

GDS Associates, Inc.

Suite 720 l 1850 Parkway Place Marietta, Georgia 30067 Administrative Judge Peter Bloch U.S. Nuclear Regulatory Conunission Washington, D.C. 20555 Elizabeth B. Johnson Administrative Judge Oak Ridge National Laboratory ,

i P. O. Box X Building 3500 Oak Ridge, Tennessee 37830 Dr. Kenneth A. McCollom  !

1107 West Knapp '

Stillwater Oklahoma 74075 Dr. Walter H. Jordan >

881 West Outer Drive Oak Ridge TN 37830 l

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) Enclosure 1 List of Persons Involved With Audit TV Electric J. W. Muffett*

Lynn Natzic* ,2 Jahan Nandi**

Impell Corporation K. Warrapius*

J. Appel-Rose

• S. Esfandiari B. Ramsey T. C. Chen B. Senn NRC/ Consultants J. Tsacoyeanes E. Solla '

D. Terao

• attending entrance meeting only

• • attending exit meeting only

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. Enclosure 2 LIST OF DOCUMENTS REVIEWED Impell Corporation, "Procedures for Implementing Screen Level 6", Project Instruction No. PI-2010-052-005. ,

Impell Corporation, "Level Four Screening Criteria for Type 1 Supports",

Project Instruction No. PI-0210-052-002.

Impell Corporation, "Seismic Evaluation of Train C Conduit Supports,"

Project Instruction No. PI-0210-052-003.

CPRT Results Report, ISAP: I.c, "Train C Conduit and Supports",

Revision 1.

Impell Corporation, "TU Electri: CPSES Project Status Report, Conduit Supports Train C Two-Inches and Less", Revision 0.

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SUMMARY

OF AUDIT ON 12/7-11/88 . February 12, 1988 Distribution: '

41B55555F775r ~

PDR Local PDR CPPD Reading OSP Reading ,

S. Ebneter/J. Axelrad C. Grimes P. McKee J. Wilson J. Lyons R. Warnick M. Malloy -

A. Vietti-Cook CPPD-LA J. Moore 0GC  ;

F. Miraglid E. Jordan J. Fartlow D. Terao ACRS(10)

OFC :CPPD:05P t P.CPPD: :CPPD:05P :CPPD:05P  :  :  : '

__.. :......... P__:.....__ :_.__. . .:... .....:........____:............:... ____...

NAME :DTerao:cb :AVietti ok:MMalloyype:JLy  :  :  :

__ ..:_______ ....:........qs(_:............:.__.........:__________..:............:____....... -

, DATE :2/)0/88 :2/4 /88 :2/A/88 :2/11/88  :  :  :

OFFICIAL RECORD COPY

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