ST-HL-AE-1286, First Interim Deficiency Rept Re Potential Pipe Support Defects.Initially Reported on 850530.Joint Util/Bechtel/ Ebasco Task Force Established to Address Root Cause & Generic Concerns.Next Rept Expected by 850909
| ML20129C960 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 06/28/1985 |
| From: | Goldberg J, Goldenberg J HOUSTON LIGHTING & POWER CO. |
| To: | Martin R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| CON-#385-691 OL, ST-HL-AE-1286, NUDOCS 8507160382 | |
| Download: ML20129C960 (4) | |
Text
-
0 The Light Company n.,,,si.,,, ugi,inix u ,m m n.,x in, n.,1,si.,,i. im,s , ,mii aisms..en
_ . . _ . . _ _ - . _ ..~ _ ,
June 28, 1985 ST-HL-AE-1286 File No.: G12.252 Mr. Robert D. Martin BON $ D Regional Administrator, Region IV Nuclear Regulatory Commission [8, ;
JQ 3E 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011
~_
u f' j ,,
South Texas Project Units 1 & 2 Docket Nos. STN 50-498, STN 50-499 First Interim Report Concerning Pipc Support Deficiencies
Dear Mr. Martin:
On May 30, 1985, pursuant to 10CFR50.55(e), Hvuston Lighting &
Power Company (HL&P), notified your office of an item concerning potential deficiencies in pipe supports that have been accept 2d by Ebasco's Quality Control (QC). Attached is the first interim report concerning this item. The next report will be submitted to your office by September 9, 1985.
If you should have any questions on this matter, please contact Mr.
Michael E. Powell at (713) 993-1328.
ery truly yours,
. l J. H. Goldberg V Group Vice President, Nuclear MEP/as
Attachment:
First Interim Report Concerning Pipe Support Deficiencies 0507160302 0506PO PDR ADOCK 05000490 G PDR
/v$
i I
cf'c W2/NRC3/J _f;- J }
(
g .J
I ST-HL-AE-1286
- File No.: G12.252 Houston Lighting & Power Company Page 2 cc:
Hugh L. Thompson, Jr., Director Brian E. Berwick, Esquire Division of Licensing Assistant Attorney General for Office of Nuclear Reactor Regulation the State of Texas U.S. Nuclear Regulatory Comission P. O. Box 12548, Capitol Station Washington, DC 20555 Austin, TX 78711 N. Prasad Kadambi, Project Manager Lanny A. Sinkin U.S. Nuclear Regulatory Commission 3022 Porter Street, N.W. #304 7920 Norfolk Avenue Washington, D.C. 20008 Bethesda, MD 20814 Oreste R. Pirfo, Esquire Claude E. Johnson Hearing Attorney Senior Resident Inspector /STP Office of the Executive Legal Director c/o U.S. Nuclear Regulatory Comission U.S. Nuclear Regulatory Comission P. O. Box 910 .
Washington, DC 20555 Bay City. TX 77414 Charles Bechhoefer, Esquire M. D. Schwarz, Jr. , Esquire Chairman, Atomic Safety & Licensing Board Baker & Botts U.S. Nuclear Regulatory Commission One Shell Plaza Washington, DC 20555 Houston, TX 77002 Dr. James C. Lamb, III J. R. Newman, Esquire 313 Woodhaven Road Newman & Holtzinger, P.C. Chapel Hill, NC 27514 1615 L Street N.W.
Washington, DC 20036 Judge Frederick J. Shon Atomic Safety and Licensing Board Director, Office of Inspection U. S. Nuclear Regulatory Commission and Enforcement Washington, D. C. 20555 U.S. Nuclear Regulatory Commission Washington, DC 20555 Mr. Ray Goldstein, Esquire 1001 Vaughn Building E. R. Brooks /R. L. Range 807 Brazos Central Power & Light Company Austin, TX 78701 P. O. Box 2121 Corpus Christi, TX 78403 Citizens for Equitable Utilities, Inc.
c/o Ms. Peggy Buchorn H. L. Peterson/G. Pokorny Route 1, Box 1684 City of Austin Brazoria, TX 77422 P. O. Box 1088 Austin, TX 78767 Docketing & Service Section Office of the Secretary J. B. Poston/A. vonRosenberg U.S. Nuclear Regulatory Commission City Public Service Board Washington, DC 20555 P. O. Box 1771 San Antonio, TX 78296 W2/NRC3/j Revised 5/22/85
- ~
e Attachment ST-HL-AE-1286 Page 1 of 2 SOUTH TEXAS PROJECT UNITS 1 AND 2 DOCKET NOS.'STN 50-498, STN 50-499 First Interim Report Concerning Pipe Support Deficiencies I
Summary I.
On May 30, 1985, Houston Lighting & Power Company (HL&P) notified NRC Region IV of deficiencies that had been iden-tified on safety-related pipe supports previously accepted by Ebasco Quality Control (QC). The extent of the defici-encies found in the sample inspections representa a poten-tial breakdown in the Quality Assurance Program and is therefore potentially reportable under 10CFR50.55(e).
II. Description Of The Deficiency HL&P QA Effectiveness Inspections (EIs) have been established to monitor the constructor's QC program and provide timely identification and correction of problens. Under the cog-nizance of the ongoing EI program, a concentrated inspection was conducted on safety-related pipe supports that had been accepted by Ebasco QC. Nonconforming conditions were identi-fled on 12 of the 16 supports inspected. These findings were documented on site Nonconformance Reports (NCRs) and a Standard Deficiency Report (SDR) and resulted in the initiation of a Deficiency Evaluation Form (DEF). In the same time frame, similar nonconforming conditions were found by HL&P's Pre-CAT Verification Team (PCVT) during their inspection of a sample of 27 safety-related pipe supports. The PCVT consists of a group of outside consultants, under the supervision of HL&P, established to provide an objective appraisal of safety-related construction.
At the time of these inspections, approximately 20% of the large bore Unit 1 safety-related pipe supports had been ac-copted by Ebasco Quality Control (QC) ., Although the majority of the nonconforming conditions are minor in nature and easily correctable (eg, broken cotter pins, loose lock nuts, rusty load pins, etc), Ebasco QC, on May 28, 1985, stopped all final inspections pending completion of a joint investigation by HL&P/
Bechtel/Ebasco.
/
Attachment ST-HL-AE-1286 Page 2 of 2 III. Corrective Actions As stated above, Ebasco QC has stepped all final inspections of safety-related pipe supports. Each of the specific findings was documented on an NCR and will be appropriately dispositioned. To determine the root cause and address the generic concerns, a joint HL&P/Bechtel/Ebasco task force was established. An analy-sis of the findings has resulted in the following set of recom-mendations by the task force.
o The pipe support installation specification must be simplified and clarified.
o The pipe support construction and inspection pro-cedures must be simplified and consolidated.
Additional training must be provided to ensure a uniform and consistent understanding of the re-quirements by construction and QC personnel.
o Documented construction acceptance must be pro-vided for each pipe support prior to QC inspec-tion to ensure construction accountability for quality, o A reinspection program will be instituted for previously inspected and accepted pipe supports.
A detailed corrective action plan and schedule, which includes all of the above task force recommendations will be finalized by July 5, 1985, and will be described in the next report.
IV. Recurrence Control Recurrence control measures will censist of the actions described in Paragraph III above. The effectiveness of these actions will be monitored through normal STP QA surveillances and the HL&P EI program.
V. Safety Analysis The safety analysis will be provided in a future report.
_ _ _ _ _ _ _ _ - _