ML20081G919
| ML20081G919 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 08/17/1983 |
| From: | Oprea G HOUSTON LIGHTING & POWER CO. |
| To: | Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| Shared Package | |
| ML20081G912 | List: |
| References | |
| ST-HL-AE-995, NUDOCS 8311070243 | |
| Download: ML20081G919 (3) | |
Text
r The Light c o m P u y 'i" s'""iix 'i"a &i" << ito is"x'7"" ii"",'"".i<x"'< ooi <7'a>228-92ii j
n August 17, 1983 ST-HL-AE-995 File Number: G12.13 Mr. John T. Collins 9'y fkf%
Regional Administrator, Region IV
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. h U.S. Nuclear Regulatory Commission l
611 Ryan Plaza Drive, Suite 1000 Agg g g jM.ffl$f Arlington, Texas 76012 O
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Dear Mr. Collins:
o South Texas Project Units 1 & 2 Docket Nos. STN 50-498, STN 50
~~7 Additional Information Request Regarding Notice of Violation 50-498/83-02, 50-499/83-02 SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION In response to your letter of July 18, 1983 concerning notice of violation 50-498/83-02, 50-499/83-02, Houston Lighting & Power Company (HL&P) feraishes the following additional information.
Itens II c. and II d. Calibration Records - Clark Portable Hardness Tester and Procurement Information - Telebrineller Test Sars The Clark Portable Hardness Tester was not required to be calibrated for the anchor bolt program.
Additional information concerning the source of the Telebrineller hardness test bars has not been located.
The test equipment was furnished and used by the previous contractor, Brown & Root, Inc. (B&R).
However, HL&P believes that a lack of this additional information does not detract from the ability to demonstrate the acceptability of the anchor bolts for reasons described below.
Generally, our Quality Assurance Program does require calibration of measuring and test equipment in accordance with ANSI Standard N45.2, Section 13.
However, for the anchor bolt program, test equipment was not required to be calibrated because such testing was used only to separate two materials with significant differences in hardness.
It was not used to measure properties precisely.
The methods were therefore not s?nsitive to minor variations which would be dependent on calibration.
8311070243 831101 PDR ADOCK 05000498 G
PDR L
r Houston Lighting & Power Company August 17, 1983 ST-HL-AE-995 File fiumber:
G12.13 Page 2 Further assurance on the reliability of the resolution of the com-mingling of bolt materials ASTM A193 and ASTM A36 will be provided by the following measures which are in progress.
HL&P has requested Bechtel Energy Corporation (BEC) to review the Brown & Root anchor bolt deficiency corrective action program.
In preliminary sample checks performed, evidence has, with rare exceptions, pointed to B&R's tests for separation of materials as being either correct or conservative. Nevertheless, Bechtel will assure by an independent review, combining engineering evaluation and testing, as necessary, that site fabricated safety-related anchor bolt materials meet project requirements. As presently structured, this program uses alloy analysis which separates 7aterials more positively.
As stated in our letter ST-HL-AE-992 dated August 15, 1983, the details of the program will be discussed in a future meeting with you and your staff.
Item II e. " Red-Lined Drawings" As stated in our original response to the notice of violation the red-lined drawings were in-process, nonpermanent documents intended to guide personnel to locations of anchor bolts.
The actual record of bolts measured, their location, and their engineering acceptance are in the report, TRD 5A840SR163-A.
Therefore, the in-process working documents, which are nonpermanent, are not essential for the purpose of documenting what was done.
The red-lined drawings might aid in determining if all safety-related bolts were measured.
Even assuming conservatively that some bolts were not measured, the sample measured was so large that, given the measurements are correct, the adequacy of thread dimensions would be statistically well substantiated.
l fievertheless, since questions exist on the adequacy of the B&R thread evaluation, HL&P has asked BEC to perform an independent review of the threads.
This review is in progress.
The review includes an engineering evaluation of the structural integrity of the threads, a review of the adequacy of previous l
measurements, and a recheck, if necessary, of dimensions on a sampling basis.
This program includes an engineering review of previous related NCRs and their dispositions.
l As stated in our letter ST-HL-AE-992 dated August 15, 1983, the details of the program will be discussed in a future meeting with you and your staff.
Very truly yours, i ',
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(?. I., ldff Executive Vice President l
ST/bjc i
.o llouston Lighting & Power Company August 17, 1983 cc:
G. W. Oprea, Jr.
ST-HL-AE-995 J. H. Goldberg File Number: G12.13 J. G. Dewease Page 3 J. D. Parsons D. G. Barker M. R. Wisenburg R. A. Frazar J. W. Williams I
R. J. Maroni J. E. Geiger H. A. Walker S. M. Dew J. T. Collins (NRC)
A. Vietti (NRC)
W. M. Hill, Jr.
(NRC)
M. D. Schwarz (Baker & Botts)
R. Gordon Gooch (Baker & Botts) l J. R. Newman (Lowenstein, Newman, Reis, & Axelrad)
STP RMS Director, Office of Inspection & Enforcement Nuclear Regulatory Commission Washington, D. C. 20555 G. W. Muencn/R. L. Range Charles Bechhoefer, Esquire Central Power & Light Company Chairman, Atomic Safety & Licensing Board P. O. Box 2121 U. S. Nuclear Regulatory Commission Corpus Christi, Texas 78403 Washington, D. C.
20555 H. L. Peterson/G. Pokorny Dr. James C. Lamb, III City of Austin 313 Woodhaven Road P. O. Box 1088 Chapel Hill, North Carolina 27514 Austin, Texas 78767 J. B. Poston/A. vonRosenberg Mr. Ernest E. Hill City Public Service Board Lawrence Livermore Laboratory P. O. Box 1771 University of California San Antonio, Texas 78296 P. 0. Box 808, L-46 Livermore, California 94550 Brian E. Berwick, Esquire William S. Jordan, III Assistant Attorney General Harmon & Weiss for the State of Texas 1725 I Street, N. W.
P. O. Box 12548 Suite 506 Capitol Station Washington, D. C.
20006 Austin, Texas 78711 Lanny Sinkin Citizens for Equitable Utilities, Inc.
Citizens Concerned About Nuclear Power c/o Ms. Peggy Buchorn 5106 Casa Oro Route 1, Box 1684 San Antonio, Texas 78233 Brazoria, Texas 77422 Robert G. Perlis, Esquire Hearing Attorney Office of the Executive Legal Director U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Revision Date 07-05-83 t