ML20236M130
| ML20236M130 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 11/09/1987 |
| From: | Terao D NRC OFFICE OF SPECIAL PROJECTS |
| To: | NRC OFFICE OF SPECIAL PROJECTS |
| References | |
| NUDOCS 8711120090 | |
| Download: ML20236M130 (9) | |
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UNITED STATES o
NUCLEAR REGULATORY COMMISSION g-l{
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WASHINGTON, D. C. 20606 November 9',
1987 g..... /
t Docket Nos. 50-445 and 50-446 APPLICANT:
Texas Utilities Electric Company (TV Electric) 0 FACILITY:
Comanche Peak Steam Electric Station (CPSES), Units 1 and.2;
SUBJECT:
SUl#tARY OF AUDIT ON SEPTEMBER.8-10, 1987 -
CABLE TRAY HANGER AS-BUILTING On September 8-10,_1987, the NRC staff and its consultants conducted an audit of the as-built program for cable tray hangers at.the CPSES site. The cable tray hanger as-built program is being performed by.Ebasco Services (CAP)porated (Ebasco) as part'of the TV Electric Corrective Action Program Incor for design validation. A list of persons involved with the audit is provided in Enclosure 1.
The purposi of the audit was to determine.the adequacy of the as-builting activities for.the CPSES seismic Category I cable trays and supports.
A flow chart of the as-builting activities is shown in Figure.1 of this sunmary.
The scope of the audit included:
a.
a review of the as-builting procedures-for technical
- adequacy, b.
a review of the implementation of procedures and process flow chart, c.
a review of the selected installed supports and tray runs for agreement with final drawings. and d.
a walkdown of cable tray runs and. supports for any visually apparent discrepancies.
The Unit 1 as-builting effort involved approximately 4500 supports of which approximately 10% required design modifications as a result of verification' analysis. Approximately 90% of the supports required Type-1 modifications which are construction deficiencies-(e.g., loose bolts, inissing washers, and gaps behind base plates) reported by the walkdown engineers.
Review of As-Builting Procedures The as-builting and design adequacy verification procedures were reviewed and discussed.with the Ebasco personnel involved with the implementation of these procedures. The procedures which were reviewed are listed in Enclosure 2.
The principal procedures are:
CPE-EB-FVM-CS-001 for Unit l' 8711120090 871109-~
TE-FVM-CS-003' for Unit 2 PDR ADOCK 0 5
i Wu Audit Summary of 9/8-10/87.
Other procedures which are listed in Enclosure 2 were developed for obtaining
)
information on some s. pecific attribute which was required subsequent to perfonning the initial evaluation of the tray and/or supports.
l The audit team found that-the procedures being used in the as-builting and f
design adequacy verification program contain sufficient detail to be implemented by the responsible personnel. Walkdown engineers are formally ~ trained in the use of the procedures and exhibited familiarity with the requirements.-
i Review of Design Process and Procedure Implementation The work sequences and document flow were reviewed and discussed with walkdown engineers and their supervisors to determine if the applicable procedures were properly implemented.
Four completed Unit'1 packages were reviewed for implementation of procedure requirements.
The sequences of work activities l
and the documents were found to follow procedure requirements and were l
well controlled. Only completed Unit 1 packages were reviewed during this audit. The staff will continue to review completed Unit 2 packages during followup audits.
Review of Installed Supports to Design Drawings Actual walkdowns were conducted for 5 Unit 1 tray spans including 9 supports to determine conformance to drawing and procedural requirements. Similar walkdowns were performed in Unit 2 for 4 tray segments, including 5 supports l
(See Enclosure 2).
The span drawings and the support drawings were compared to the actual installations by checking the following characteristics during the walkdowns:
Configuration and location of the spans or segments and the supports Support identification l
Types of clamps Types and sizes of welds Types, sizes, and material of bolts-Member orientation Tray location on tier Anchorage configuration Attachments to tray, i.e., conduit L1andL2 distances (forUnit2only)
Tray nunbers or segment numbers The results of the walkdowns of. tray runs and-supports for Unit I revealed minor discrepancies..Walkdown of Unit 2 cable trays and supports resulted in noting an apparent excessive gap behind a base plate (CTH-2-11982) and the location of 1/2" HILTI's near one of the baseplates which do not appear on the:
support drawing. The TV Electric QA inspection report for this support (IRME-27056) was.provided to the audit team. -The team is' continuing its review of the acceptability of the excessive gap behind the baseplate. This issue will be reviewed further in a followup audit.
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Audit Sumary of 9/8-10/87 Review of Visual Discrepancies A walkdown was conducted through randomly selected Unit 1 and Unit 2 areas in order to note any visually apparent discrepancies. Visually apparent tray discrepancies which were noted during the walkdowns included non-standard-1 splice plates, side wall cutouts, and non-standard hinged fittings used for small changes in the horizontal direction. The splice plate and sidewall l
discrepancies will be resolved by means of procedures which are currently in preparation. The non-standard tray fitting discrepancy is covered as part of 1
a Corrective Action Request, CAR-87-031.
A followup audit will be conducted to review the resolution of these discrepancies.
A total of 50 hours5.787037e-4 days <br />0.0139 hours <br />8.267196e-5 weeks <br />1.9025e-5 months <br /> was involved in this audit.
j David Terao, Mechanical: Engineer Comanche Peak Project Division Office of Special Projects 1
l 1
Enclosures:
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1.
List of Persons involved with Audit i
2.
List of Documents Reviewed
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3.
As-Builting Activities Flow Chart cc: See next page
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Comanche Peak Steam Electric Station W. G. Counsil
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. Units 1 and'2-Texas Utilities Electric Company q
,R CC:
Thomas G. Dignan, Jr.-
Asst.~ Director for Inspec. Programs Comanche Peak Project Division Ropes & Gray-U.S. Nuclear '9qulatory Commission 225 Franklin Street Boston, Massachusetts 02110 P. 0. Box 102L Granbury. Texas 76048'
' Robert A'. Wooldridge, Esq.
Regional 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 AESinkin Mr. Homer C. Schmidt-Christic: Institute-Director of Nc: lear 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,lEsq.
y 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.
1 Orrick, Herrington & Sutcliffe
~
600 Montgomery Street' Mr. R. S. Howard San Francisco California: 94111' Westinghouse Electric Corporation P. O. Box 355 Anthony Z.'Roisman,fEsq.
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. 0.-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 y
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 1
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i W.:G. Counsil
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Comanche Peak Electric Station.
Texas. Utilities Electric Company-Units l'and 2.
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Joseph F. Fulbright Fulbright & Jaworski 1301 McKinney Street.
Houston, Texas 77010 Roger D. Walker Manager, Nuclear Licensing-Texas' Utilities Electric Company
.i Skyway Tower-l l-400 North.011ve ' Street, L.B. 81 Dallas, Texas' 75201
- )
Mr. Jack Redding.
.l c/o Bethesda Licensing..
-[
Texas Utilities Electric Company 3 Metro Center,-. Suite 610 j
Bethesda, Maryland 20814 j
1 William A. Burchette, Esq.
J Counsel for Tex-La Electric Cooperative
-l of Texas Heron, Burchette, Ruckert & Rothwell Suite 700 1025 Thomas Jefferson Street, NW Washington, D.C.
20007 James M. McGaughy 1
GDS Associates, Inc.
Suite 450 2525 C wberland Parkway Atlanto, Georgia 30339 Administrate.ve Judge Peter Bloch U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Elizabeth B. Johnson i
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-li~.___E___.___.__
x 1
ENCLOSURE 1 LIST'0F PERSONS INVOLVED WITH CABLE TRAY HANGER AUDIT TV Electric J. Finneran*
J. Nandi 1
i
. i Ebasco. Services. Inc.
l Lj M. Strehlow-G. Scarfo j
P. Patel
.M. Fontenac
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R. Radelich R. Rein l
NRC Audit Team 1
- 0. Terao*
H P. Bezler (Brookhaven National Laboratory)
G. Breidenbach (Brookhaven National Laboratory)
- entrance meeting only 1
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ENCLOSURE 2 i
List of Documents Reviewed 1.
Procedure CPE-FB-FVM-CS-001, Rev. 8-TE-FM-CS-003, Rev. 2 j
CPE-EB-FVM-CS-019 Rev. 2 TE-FVM-CS-036, Rev. O TE-FVM-CS-048, Rev. O TE-FVM-CS-050, Rev. 0 2.
Span Sketches (Unit 1)
CTH-1-SL-1013, Rev. 00 CTH-1-SL-1066, Rev. 00 CTH-1-SL-4015, Rev. 01 CTH-1-SL-4039,~Rev. 00 CTH-1-SL-4052, Rev. 00 3.
As-Built Support Drawings Unit 1 CT-1-5840, Rev. 02 CT-1-5824..Rev. 02 CT-1-5829. Rev. 02 CT-1-5529. Rev. 02 CT-1-6503, Rev. 02 CT-1-1069, Rev. 02 CT-1-12575, Rev. 05 CT-1-1357, Rev. 02 CT-1.1312, Rev. 01 Unit 2 CTH-2-11984, Pev. 02 CTH-2-11985, Rev. 02 CTH-2-11982, Rev. 03 4.
Tray Span Map Sketches (Unit 2)
SM-SK-1003, Rev. O.
Segment No. T23GRCLO7 to T23GRCL12 Segment No. T22GRBM01 to T22GRBM05 SM-SK-3001, Rev. O Segment No. T22GSBG25 to T22GSBG30 Segment No. T23GSCE30 to T23GSCE28 5.
Cable Tray Hanger Packages (Unit 1)
CTH-1-2095 El-727-S)
CTH-1-4966 El-710-01-S)
CTH-1-5402 El-711-S)
CTH-1-5758 El-0510-01-S) 6.
Inspection Report IRME-27056
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' November 9,.1987 DISTRIBUTION:
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NRC PDR.
ll Local PDR CPPD Reading OSP Reading l
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leDATE ':10/W/87
- 10/A/87-
- 10/d-/87
- 14/%/87 1
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