ML20236W264
| ML20236W264 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 11/25/1987 |
| From: | Terao D NRC OFFICE OF SPECIAL PROJECTS |
| To: | NRC OFFICE OF SPECIAL PROJECTS |
| References | |
| NUDOCS 8712070362 | |
| Download: ML20236W264 (8) | |
Text
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4 UNITED STATES n
- t NUCLEAR REGULATORY COMMISSION.
l WASHINGTON, D. C. 20655
% **.* /
4 November 25, 1987 D:cket Nos. 50-445 and 50-446 l
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APPLICANT:
Texas Utilitir,s Electric Company (TV Electric)
FACILITY:
Comanche Peak Steam Electric Station, Units 1 and 2
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SUBJECT:
SUMMARY
OF AUDIT ON SEPTEMBER 8-10, 1987 - CONDUIT 1
SUPPORT (TRAINS A AND B AND TRAIN C GREATER THAN 2").
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AS-BUILT VERIFICATION PROGRAM l
On September 8-10, 1987, the NRC staff and its consultant's performed an audit of the as-built field verification program for conduit supports (Trains A and B and Train C greater than 2") at the Comanche Peak Steam Electric Station (CPSES).
The conduit support as-built verification program is being conducted by Ebasco Services Incorporated for Trains A and B and Train C greater than two~ inches in diameter
- as part of the TV Electric Corrective Action Program for design validation.
The purpose of the audit was to determine the adequacy of the CPSES as-built program for conduit supports being conducted by Ebasco.
The scope of the audit included a review of the conduit systems'(i.e.,
conduit, conduit supports, and junction boxes) in CPSES Unit 1, Unit 2, and common areas.
The audit scope included a review of the technical adequacy of the as-builting procedures including completeness in identifying all important attributes needed for design verification, review of the implementation of the as-builting procedures including the information/ document flow process, review of representative conduits and supports for agreement with. as-built information documented in the walkdown packages, and walkdown of representative conduits and supports to identify any deficiencies.
A list of persons involved with the audit is provided in Enclosure.1 to.this summary.
As-Built Verification Procedure Review The audit team discussed with Ebasco personnel the three principal procedures utilized to perform the as-builting' effort.
The three procedures. reviewed by the team are:
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- Conduit Trains A and B are safety-related (seismic Category I).
Conduit I
Train C is not safety-related (seismic Category II) but is required to be seismically supported to prevent adverse interactions with safety-related components.
Conduit Train C less than or equal to 2 inches in diameter is being handled by Impell Corporation.
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8712070362 871125 l
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Summary of Audit on 9/8-10/87 November 25, 1987 l
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CPE-EB-FVM-CS-033, Rev.
2'- For Unit 1 conduit installed in Unit 1 and common area a
2.
CPE-EB-FVM-CS-002, Rev. 4 - For Unit 2 conduit 3.
CPE-EB-FVM-CS-014, Rev.c 5 ~- For Unit 2 conduit installed
'l in Unit 1 and~ common area"(Unit"2X Conduit)
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The procedures were reviewed by the' audit team to' determine whether the' l
J instructions given to the walkdown eng neers are a equa e'and provide the i
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requirements necessary to' prepare the required'as-built documents (isometric conduit. drawings, conduit support drawings,land junction box support drawings).
]j In addition, the various steps, from the identification of the conduit systems to be walked down to the transmittal of data'to?the Ebasco Design Verification Group, were reviewed and discussed with the Ebasco pers'onnel' responsible for.
the conduit field verification program, j
Based on its review, the audit team found the as-built ' verification procedures' to be technically adequate and that they provide appropriate.' instructions necessary to prepare the required as-built documents for those attributes listed.in the procedures.
Attributes not included in these procedures, such -
as. weld size / length or bolt hole size, are covered by'the Brown and Root Quality Control inspections.'or by supplemental inspection programs (e.g,-
Post-Construction Hardware Validation Program).
Implementation of As-Builting Procedures l
- j To verify the adequacy of the implementation of. the as-built _ procedures, a representative sample of 8 conduit lines were selected by the audit team... The walkdown packages reviewed by the team are-listed in Enclosure 2 to this summary.
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.l The 8 conduit systems and associated supports selected by the team were deter-d mined to be representative of the associated Unit, buildings,. conduit sizes, f
and train types.
The reviews were.per. formed-by comparing the documented
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walkdown package to the as-installed conduit. system.
Although not every
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'l dimension nor all supports were checked bylthe audit team, they audited'in sufficient detail to gain reasonable assurance that-the as-builting procedures had been properly implemented.
Any deficiencies or discrepancies which might affect design adequacy were noted.
The team found implementation of the as-built procedures, including documentation of completeness and accuracy, to be' adequate except for;the items discussed below'.
These items were primarily documentation in nature and would not byJthemselves lead to a design deficiency affecting safety.
Some of the more obvious and common observations found by theiteam includedi j
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,' Summary of Audit'on.9/8-10/87
-3.
. November 25,:1987 4
l 1.
Missing data on isometric drawings and/orLsupport
. detail s.'
2.
Conduit' offset angles incorrectly shown, j
3, Anchor bolt ~1ength: identifier 'provided on ' drawing:
l where as the actual items -on the installed anchor, J
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.could not be visually determined.:-
Theaudit;teamfindsthat-itemsiland'2above'wouldnormallybe.resolvedby..
L the design verification group.. For_ item _' 3"above, the audit team identified a'.
need to understand how the information wasfobtained. This item will bel.
' discussed further..in a followup audit.
This site' audit of the as-built verification program for conduit supports; (Trains A and B and Train C greater than 2")~ involved 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />, David Terao, Mechanical Engineer' 1
Comanche Peak Project Division I
Office of~Special Projects' l
Enclosures:
1.
List of Personnel-Involved With Audit-2.
Walkdown Packages Reviewed During Audit-cc:
See next page i
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Comanche. Peak Steam Electric Station W. G. Counsil Texas Utilities Electric Company.
Units.1 and:2 CC:
' Asst. Director for Inspec. Programs.
Thomas G. Dignan, Jr.
Comanche-Peak Project Division-
' Ropes & Gray U.S. Nuclear' Regulatory Commission 225 Franklin Street Boston, Massachusetts 02110 P. 0.' Box 1029-Granbury, Texas ;76048 Robert A. Wooldridge, Esq.
Regional 1 Administrator, Region'IV.
Worsham, Forsythe, Sampels &-
U.S. Nuclear Regulatory Commission 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 d'
Director of Nuclear Services 1324 North Capitol Street-Texas Utilities Electric Company Washington', 0.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. Howaro San Francisco. California 94111 l
Westinghouse Electric Corporation l
P. O. Box 355 Anthony.Z.-Roisman, Esq.
Pittsburgh, Pennsylvania 15230 Suite 600 j
1401 New York Avenue, NW Renea Hicks, Esq.
Washington, D.C. 20005 Assistant Attorney General
.)
J Environmental Protection Division Robert Jablon P. O. Box 12548 Capitol Station Bonnie S. Blair Austin, Texas 78711 Spiegel & McDiarmid l
1350 New York Asenue, NW l
Mrs. Juanita Ellis, President-Washington, D.C. 20005-4798 i
Citizens Association for Sound Energy
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1426 South Polk George A. Parker,' Chairman
'I Dallas, Texas 75224
_Public Utility Committee Senior Citizens Alliance Of R
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 E
.)
.. Comanche Peak Electric Station W. G. Counsi)
. Texas Utflities. Electric Company Units 1 and 2-CC:'
Joseph F. Fulbright,
Jack.R. Newman, Esq.-
Fulbright & Jaworski-Newman &:Holtzinger,.P.C.-
'j 1301 McKinney Street Suite 1000-Houston, Texas 77010 1615 L Street, N.W..
Washington, 0.i. 20036
. Roger D. Walker l
Manager, Nuclear Licensing Texas Utilities Electric Company Skyway Tower.
400 North Olive Street, L.B. 81 I
Dallas, Texas 75201 Mr. Jack Redding.
c/o Bethesda Licensing Texas Utilities Electric Company 3 Metro Center, Suite 610 Bethesda, Maryland 20814 1.
William A. Burchette. Esq.
Counsel for Tex-La Electric Cooperative q
of Texas q
Heron, Burchette, Ruckert & Rothwell l
Suite 700 1025 Thomas Jefferson-Street, NW Washington, D.C.
20007 q
James P. McGaughy, Jr.
GDS Associates, Inc.
Suite 720' l
a 1850 Parkway Place Marietta, Georgia 30067 l
Administrative Judge Peter Bloch U.S. Nuclear Regulatory Commission Washington, D.C.
20555-Elizabeth B. Johnson
. Administrative Judge Oak Ridge National Laboratory P.~0. Box X, Building 3500 Oak Ridge, Tennessee 37830 Dr. Kenneth A. McCollom 1107 West Knapp Stillwater, Oklahoma.l 74075 Dr. Walter H. Jordan -
a Administrative Judge j
881 West Outer Drive Oak Ridge, Tennessee. 37830
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- s ENCLOSURE 1
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LIST 0F PERSONNEL INVOLVED WITH AUDIT-0F' CONDUIT SUPPORT-(TRAINS A>AND B AND TRAIN C-v 2"Y AS-BUILT VERIFICATION PROGRAM :-
September 8-10,'1987:
r Personnel Contacted-
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- R. Lynn'Natzic,.TU Electric R. Beam, Ebasco J. 0. Aaen, Ebasco; NRC Staff / Consultants
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- D.'Terao, NRC-G. Degrassi.', Brookhaven. National Laboratory:
'J. Braverman, Brookhaven National Laboratory:
.+
- part-time
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. ENCLOSURE 2.
WALKDOWN PACKAGES REVIEWE0 DURING AUDIT 0F CONDUIT SUPPORT (TRAINS A AND 8 AND TRAIN C > 2")-
AS BUILT VERIFICATION PROGRAM-i September 8-10,'1987
The audit-team reviewed the.following Unit 1' walkdown packages; and as-built'
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conditions for conduit lines and associated. supports:
1.
Conduit
'2" 9 C13G05070, Aux. Bldg..
Supports - C13G05070 through.10-Junction Box Supports - JB1A-239G & JB1A-240G 2.
Conduit - 4" O C14K30729, Safeguard Bldg.
-Supports - C14K30729-01 through 13 and 15 3.
Conduit - S" O C14K10368,. Electrical. Control' Bldg.
Supports - C14K10368-01 through 05 4.
Conduit - 3" 9 C02G17250, Electrical Control Bldg.
Supports - C02G17250-01 through 05 The team reviewed the following Unit 2X (Unit 2 conduit installed in Unit 1 and common area) walkdown packages and as-built conditions for Unit 2 conduit ~-
and associated supports installed in Unit 1 and. common areas:
1.
Con'duit - 1\\" O C22004985, Aux. Bldg.
Supports - C22 0.0. 04985-01 through 07.-.09'and 10 2.
Conduit - 1\\" 9. C25WO7493' Electrical' Control Bldg.:
l Supports - C25WO7493-01 through 03-Junction Box Support'- JB2A-477W The team reviewed the following Unit 2 walkdown packages and.as-built-conditions for conduit' lines and associated supports installed in Unit 2:
1.
Conduit - 4" 6 C2ND-50010, Reactor Bldg.
Supports - C2ND50010-01 through 05-Junction Box Support - JB2C-420
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2.
Conduit - 3" O C22009142, Safeguard Bldg.
-l Supports - C22009142-01 through 04 j
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