ML20237B413
| ML20237B413 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 12/14/1987 |
| From: | Terao D NRC OFFICE OF SPECIAL PROJECTS |
| To: | NRC OFFICE OF SPECIAL PROJECTS |
| References | |
| NUDOCS 8712160243 | |
| Download: ML20237B413 (8) | |
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UNITED STATES 4
!"'. N NUCLEAR REGULATORY COMMISSION W ASHINGTON, D. C. 20s55
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4 December 14, 1987 Docket Nos. 50-445 and 50-446
^ APPLICANT:
Texas Utilities Electric Company (TV Electric) l FACILITY:
Comanche Peak Steam Electric Stat. ion, Units 1 and 2
SUBJECT:
SUMMARY
OF AUDIT ON AUGUST 10-13, 1987 - CONDUIT SUPPORTS (TRAIN C < 2") AS-BUILT VERIFICATION On August 10-13, 1987, the NRC staff and its consultants performed an audit of the as-built field verification program for Train C conduit less than or equal to 2 inches and conduit supports (hereafter referred to as " Train C conduit") at the Comanche Peak Steam Electric Station (CPSES).
The Train C conduit as-built program is being conducted by Impell Corporation as part of the design validation effort under the TU Electric Corrective Action Program (CAP).
The purpose of the NRC staff audit was to verify the adequacy of the Impell walkdown criteria in its ability to structurally qualify the as-built condition of the Train C conduit.
A list of persons involved with the audit is provided in Enclosure 1.
The scope of the audit included: (1) a review of the Impell walkdown procedures, (2) a review of the Train C conduit methodology and approach, and (3) a review and walkdown of a completed room.
Review of Impell Walkdown Procedures The audit team reviewed the Impell walkdown procedures listed in Enclosure 2.
Impell Corporation is performing a plant walk-through to inspect all Train C conduit supports and all associated junction boxes attached to conduit of 2-inch diameter and less.
In addition, the reclassified lighting system is being reviewed by Impell.
Impell has developed a screening process to qualify the Train C conduit supports and junction boxes as well as the lighting system for seismic loads and/or to verify that adverse interactions with safety related equipment do not occur.
The screening process consists of eight screening criteria (levels).
Project Technical Instructions have been written and implemented.
At this time, Screen Levels 1 and 7 have not been used in the program.
The audit team did not identify any open or unresolved items in its review of the walkdown procedures.
Review of Train C Conduit Design Methodology and Approach The audit team reviewed the criteria, design methodology, and approach used for the multi-level screening criteria (see Enclosure 2).
The multi-level screening criteria provide acceptance criteria based on parametric studies, tests of generic support types, analysis of representative conduit runs or junction boxes, and criteria for identifying acceptable interaction between Train C conduit or junction boxes with certain safety-related components.
8712160243 871214 PDR ADOCK 05000445 A
Summary of Audit 8/10-13/87 Field inspections are performed r'.i! 7.ing Screening Levels 2, 3, and 6.
The audit team did not identify any op.i or unresolved items in its review of the design methodology and approach Review of Calculations The audit team viewed the areas in the plant where the design of Train C conduit and supports were being validated by Impell.
The audit team selected Room 206 in the Auxiliary Building for review of completed calculations and documentation (see Enclosure 2) and verified the adequacy of the implementation of the Impell as-built walkdowns performed for Room 206.
The audit team did not identify any open or unresolved items in its review of calculations.
Audit Team Findings Based on a review of the Impell procedures, design criteria, and calculation packages for Train C conduit, the audit team found that the multi-level screening criteria used to determine the acceptability of the Train C conduit contain subjective criteria which will require further review of its development and implementation by the audit team.
Although the audit team did not identify any open or unresolved items at this time, in part because of the indeterminate nature of the subjective evaluations utilized in the Impell acceptance criteria, the audit team will continue to review the basis for the acceptance criteria, the appropriateness of its application, and its implementation in a followup audit.
4 4f C David Terao, Mechanical Engineer Comanche Peak Project Division Office of Special Projects
Enclosures:
- 1. List of Personnel Involved with Audit
- 2. Lists of Impell Documents Reviewed cc:
See next page
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l
I W. G. Counsil Comanche Peak Steam Electric Station l
l Texas Utilities Electric Company Units 1 and 2 cc:
1 Thomas G. Dignan, Jr.
Asst. Director for Inspec. Programs Ropes & Gray Comanche Peak Project Division 225 Franklin Street U.S. Nuclear Regulatory Commission Boston, Massachusetts 02110 P. O. Box 1029 Granbury, Texas 76048 l
Robert A. Wooldridge, Esq.
Regional Administrator, Region IV Worsham, Forsythe, Sampels &
U.S. Nuclear Regulatory Commission l
Wooldridge 611 Ryan Plaza Drive, Suite 1000 2001 Bryan Tower, Suite 2500 Arlington, Texas 76011 Dallas, Texas 75201 Lanny A. Sinkin Mr. Homer C. Schmidt Christic Institute Director of Nuclear Services 1324 North Capitol Street Texas Utilities Electric Company Washington, D.C.
20002 Skyway Tower 400 North Olive Street, L.B. 81 Ms. Billie Pirner Garde, Esq.
Dallas, Texas 75201 Government Accountability Project Midwest Office Mr. Robert E. Ballard, Jr.
104 East Wisconsin Avenue Director of Projects Appleton, Wisconsin 54911 Gibbs and Hill, Inc.
11 Penn Plaza New York, New York 10001 David R. Pigott, Esq.
Orrick, Herrington & Sutcliffe 600 Montgomery Street Mr. R. S. Howard San Francisco, California 94111 Westinghouse Electric Corporation P. O. Box 355 Anthony Z. Roisman, Esq.
Pittsburgh, Pennsylvania 15230 Suite 600 1401 New York Avenue, NW Renea Hicks, Esq.
Washington, D.C. 20005 Assistant Attorney General Environmental Protection Division Robert Jablon P. O. Box 12548, Capitol Station Bonnie S. Blair Austin, Texas 78711 Spiegel & McDiarmid 1350 New York Avenue, NW Mrs. Juanita Ellis, President Washington, D.C. 20005-4798 Citizens Association for Sound Energy 1426 South Polk George A. Parker, Chairman Dallas, Texas 75224 Public Utility Committee Senior Citizens Alliance Of Ms. Nancy H. Williams Tarrant County, Inc.
CYGNA Energy Services 6048 Wonder Drive 2121 N. California Blvd., suite 390 Fort Worth, Texas 76133 Walnut Creek, CA 94596
~
W. G. Counsil Comanche Peak Electric Station
. Texas. Utilities Electric Company Units 1 and 2 cc:
Joseph F. Fulbright Jack R. Newman,.Esq.
Fulbright & Jaworski Newman & Holtzinger, P.C.
1301 McKinney Street Suite 1000
. Houston, Texas 77010 1615 L Street, N.W.
Washington, D.C. 20036 i
Roger D. Walker.
Manager, Nuclear Licensing Texas Utilities Electric Company Skyway Tower 400 North Olive Street, L.B. 81 Dallas, Texas 75201 Mr. Jack Redding c/o'Bethesda Licensing Texas Utilities Electric Con-pany 3 Metro Center, Suite 610 Bethesda, Maryland 20814 William A. Burchette, Esq.
Counsel for Tex-La Electric Cooperative of Texas Heron, Burchette, Ruckert & Rothwell Suite 700 1025 Thomas Jefferson Street, NW
-Washington, D.C.
20007 James P.' McGaughy, Jr.
GDS Associates, Inc.
Suite 720 1850 Parkway Place Marietta, Georgia 30067 Administrative Judge Peter Bloch U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Elizabeth B. Johnson Administrative Judge Oak Ridge National Laboratory P. O. Box X, Building 3500 Oak Ridge, Tennessee 37830 Dr. Kenneth A. McCollom 1107 West Knapp Stillwater, Oklahoma 74075 Dr. Walter H. Jordan Administrative Judge 881 West Outer Drive Oak Ridge, Tennessee 37830 1
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4
List of Personnel Involved With Train C Conduit 5 2" Audit August 10-13, 1987 NRC Staff and Consultants D. Terao* - NRC/0SP J. A. Flaherty - Teledyne Engineering Services E. A. Solla - Teledyne Engineering Services Personnel Interviewed J. Finneran - TU Electric J. Muffett - TU Electric R. L. Natzic - TV Electric A. Cowell - Impell S. Esfandiari - Impell F. Gilani - Impell A. Omar - Impell J. Campbell - Impell
- Part-time
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4 List of Impell Documents Reviewed During Audit August 10-13, 1987 1)
Walkdown Procedures:
Project Instruction 0210-052-004, "As-Built Walkdown," Rev. 1.
Project Instruction 0210-052-005, " Procedures For Implementing Screen Level 6," Rev. 3.
2)
Design Criteria and Methodologies:
Project Construction 0210-053-001, " Multi-Level Screening Criteria For Train C Conduit, Part I, Methodology," Rev. 7.
Project Construction 0210-053-001, " Multi-Level Screening Criteria For Train C Conduit, Part II, Conduit Supports Walkdown Instructions," Rev. 7.
Project Instruction 0210-053-001, " Multi-Level Screening Criteria For Train C Conduit, Part III, Conduit Support Engineering Evaluation Procedures,"
Rev. 7.
Project Instruction 0210-053-001, " Multi-Level Screening Criteria For Train C Conduit, Part IV, Procedures for Support Rework Options,"
Rev. 7.
Project Instruction 0210-053-001, " Multi-Level Screening Criteria For Train C Conduit, Part V, Junction Box Walkdown Instructions," Rev. 7.
P'roject Instruction 0210-053-001, " Multi-Level Screening Criteria For Train C Conduit, Part VI, Engineering Evaluation Procedures for Junction Boxes," Rev. 7.
Project Instruction 0210-053-001, " Multi-Level Screening Criteria For Train C Conduit, Part VII, Procedures for Junction Box Rework Options," Rev. 7.
Project Instruction 0210-053-002, Level 4 Screening Criteria For Type 1 Supports," Rev. 3.
Project Instruction 0210-052-003, " Seismic Evaluation of Train C Conduit Supports," Rev. 3.
Project Instruction 0210-052-006, " Rigorous Analysis of Train C Conduit,"
Rev. 2.
Report No. 01-0210-1483, "Hilti Kwik Bolts Justifications of Factor of Safety," Rev. 2.
Report No. 01-0210-1527, " Justification of Damping Value," Revision Dated November 1986 and Rev. 1.
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l 3)
Auxiliary Building Room Calculations:
l Room Closeout - Unit 1, Auxiliary Building, Room 206, Calculation No. RCO-1-AUX-206, Boric Acid Tanks.
Calculation No. L6-1-B-206, Level 6, Interaction Evaluation, Rev. O, Room 206.
Calculation No. L2-S-1-AUX-206, Rev. F0, Level 2, Conduit Support Evaluation, dated May 28, 1987.
Calculation No. L4-5-1-AUX-206, Level 4, Support Evaluation, Rev. O, dated May 14, 1987.
Calculation No. A-02846, Level 5, Support Evaluation, Room 206.
Calculation No. A-02851, Level 5, Support Evaluation, Room 206.
Calculations, Level ';, Room 206, Support A-02950 through A-02952.
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Summary of Audit 8/10-13, 1987 December 14, 1987 l
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Distribution:. _
Docket;Fil.e 50-445/446'.?
PDR' l
Local PDR i
OSP Reading l
CPPD Reading l
S. Ebneter/J. Axelrad l
C. Grimes j
P. McKee i
J. Lyons I
R. Warnick j
M. Malloy 4
A. Vietti-Cook D. Terao l
CPPD-LA OGC-Bethesda F. Miraglia E. Jordan J. Partlow ACRS (10)
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- JLyoq NAME :DTerao:cb DATE $12/ 3 /87
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