ML20040H312
| ML20040H312 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak, Byron  |
| Issue date: | 02/11/1982 |
| From: | Stewart R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML18023A006 | List: |
| References | |
| NUDOCS 8202180067 | |
| Download: ML20040H312 (10) | |
Text
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I UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING BOARD In the Matter of
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TEXAS UTILITIES GENERATING COMPANY, )
Docket Nos. 50-445 1
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50-446
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(Comanche Peak Steam Electric
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Station, Units 1 and 2)
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AFFIDAVIT OF ROBERT C. STEWART CONCERNING CONTENTION 7 I, Robert C. Stewart, being duly sworn, do depose and state:
Q1.
By whom are you employed and describe the work you perform?
A1.
I am a Reactor Inspector, U.S. Nuclear Regulatory Commission, Region IV, Division of Resident, Projects and Engineering Pro-grams, Projects Branch #1, Projects Section A.
I am responsible for coordinating all safety-related inspec-tions for facilities assigned to me within NRC Region IV. A l
statement of my professional and educational qualifications j
is attached to this affidavit.
l Q2.
What.is the nature of the responsibilities you have had regarding the Comanche Peak Steam Electric Station?
A2.
I was the principal inspector from June 1974 to January 1978, during which time I had responsibility for coordinating all safety-related inspections of Comanche Peak construction.
8202180067 820211 PDR ADOCK 05000445 G
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. During that period of time I performed or participated in numerous inspections of Comanche Peak construction.
I also conducted special investigations concerning allegations by former Comanche Peak employees of improprieties in Comanche
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Peak construction.
Q3.
Would you describe the scope of the sub,iect matter addressed in your affidavit?
A3.
I have been asked to address certain issues raised by Conten-tion 7, which states as follows:
" Applicants have failed to adequately evaluate whether the rock overbreak and subsequent fissure repair using concrete grout have impaired the ability of Category I structures to withstand seismic disturbances."
In particular, I have been asked to determine if the facts presented in paragraphs I., 2., 4., 5., 7., 8., 9., 10. and 11.
of the Applicants' " Statement of Material Facts As to Which There Is No Genuine Issue Regarding Cor.tention 7" (hereafter
" Applicants' Statement of Material Facts") are correct and if the NRC Staff supports the Applicants' position.
l Q4.
Have you read the Applicants' Statement of Material Facts and do you concur with those paragraphs in the Statement of Material Facts enumerated above?
A4.
Yes.
I have read and concur with the paragraphs specified l
above.
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. 05.
Are you aware of any incidents of detrimental rock overbreak which occurred during Comanche Peak construction?
AS.
Yes. During the initial blasting of previously undisturbed rock in excavating for the Unit I and Unit 2 Containment Buildings, overbreak occurred in adjacent rock. Surface rock, varying'in depth from one (1) to six (6) feet was shattered and fissured on the perimeter of both the Unit 1 and Unit 2 Containment Buildings and the areas of the Safeguards Building, Fuel Building and Auxiliary Building. The Applicants reported this matter to the NRC in accordance with 10 CFR 6 50.55(e).
Q6.
Were incidents of rock overbreak which occurred during Comanche Peak construction repaired? If so, were such repairs performed in accordance with any specifications and procedures?
l A6.
Yes. The incidents of rock overbreak described above were l
l required to be repaired in accordance with Gibbs & Hill, Inc.
specifications and Brown & Root, Inc. procedures and proce-I dures developed by Mason-Johnston Associates, Inc.
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During independent inspections perfomed from 1975-1978, I periodically observed activities involved in repairing the rock overbreak, namely, cleaning of rock surfen.es, placement of concrete and grouting. Such observations generally involved discussions with the cognizant Mason-Johnston Associates, Inc.
field geologist, Herbert C. Crowder, as well as a review of the applicable Gibbs & Hill, Inc. specifications, the Brown
. and Root, Inc. procedures, the fiason-Johnston Associates, Inc.
procedures and the Brown and Root, Inc. repair and inspection records, all of which were maintained in the on-site QA/QC document control vault. My personal observation and evalua-tion indicated that the repairs of the rock overbreak, including the placement of concrete and grouting, were made in accordance with the applicable specifications and procedures.
Q7.
Are you aware of any fractures in the rock on which or against which the foundation for any Category I structures was poured?
A7.
Yes.
I am aware of fractures in the rock on which or against which the foundations of the Unit I and Unit 2 Containment a
Buildings, the Safeguards Building and the Fuel Building were poured.
Q8.
Were any such fractures identified, mapped for grouting and repaired in accordance with any specifications and procedures?
A8.
Yes. During my inspections, I observed such fractures being identified, mapped for grouting and repaired in accordance with Gibbs & Hill, Inc. specifications, Brown and Root, Inc.
procedures and Mason-Johnston Associates, Inc. procedures.
l Based on my personal observation and evaluation, I concluded t
that the fractures were properly identified, mapped for grouting and repaired in accordance with the applicable specifications and procedures.
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Q9.
Are you aware of any loose rock or other foreign material allowed to remain in the exccvation site of foundations for seismic Category I structures?
A9.
I am not aware of any loose rock allowed to remain in the excavation site of foundations for seismic Category I structures.
However, I am aware of a chainfall left in the Unit I contain-ment base mat. The Applicants reported this to the NRC in
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accordance with 10 CFR 6 50.55(e).
Q10.
Were any such sites properly cleaned before foundation place-ments began?
A10.
Yes.
Cleaning in preparation for concrete placement is a requirement contained in Brown and Root, Inc. inspection procedures and during my inspections and site visits, I routinely observed such cleaning in preparation for concrete placement.
Q11.
Are you aware of any instances of voids in foundations of seismic Category I structures?
All.
Yes.
I am aware of two such instances of voids (as dis-tinguished from " honeycombs" or " cold joints") in foundations of seismic Category I structures. The Applicants reported such occurrence in accordance with the requirements of 10 CFR t
9 50.50(e).
I am not aware of any other voids in seismic Category I foundation structures at Comanche Peak.
. Q12.
Was any corrective action taken to repair any incidents of foreign material and voids discovered in foundations of seismic Category I structures?
A12.
Yes. NRC inspectors monitored and observed corrective action taken by the Applicants.
Q13.
Are you aware of any foreign material, loose rock and/or voids in the foundations of seismic Category I structures which would have an effect on the static, dynamic and engineering proper-ties of these structures?
A13.
No. Based on the inspections conducted, I am not aware of any foreign material, loose rock and/or voids in the foundations of seismic Category I structures which would have en effect on the static, dynamic and engineering properties of these structures.
Q14.
Are you aware of allegations made by an ex-Brown and Root, Iac. employee, George Clancy, concerning the quality of construction at Comanche Peak?
A14.
Yes. Allegations by George Clancy of deficiencies in Comanche Peak construction were the sub,iect of a July 18, 1979 article in the student newspaper of the University of Texas at Arlington. As a result of these allegations, in September and October 1979, an investigation was conducted, in which I parti-(
cipated, to assess the validity of the allegations and their impact on safety-related components and systems. As part of this investigation, I personally interviewed Mr. Clancy, as well as l
. other persons identified as having knowledge of these matters.
The result of this investigation indicated that Mr. Clancy's allegations either had no merit or could not be substantiated.
I understand that in May 1981 an Intervenor in this proceeding, CFUR, revealed to NRC Staff Counsel in this proceeding that an interview by CFUR in May 1980 of George Clancy and another "ex-Brown and Root employee", C. A. Thetford, provided the basis for the allegations by CFUR that loose rock was thrown into the area of the rock overbreak prior to the pouring of concrete. However, at the time I interviewed Mr. Clancy, in September and October,1979, he did not allege that loose rock was thrown into the area of the rock overbreak prior to the pouring of concrete, nor was I aware of any such allegation.
I hereby certify that the above statements are true and correct to the best of my knowledge and belief.
f Or MY Tobert"C. Stekart
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Subscribed and sworn to before me this //A day of February,1982 i
h Ob Notary Publ(c
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My Commission Expires:
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Attachments: As stated
Statement of Professional Qualifications Name:
Robert C. Stewart
Title:
Reactor Inspectnr Employer:
Division of Resident, Projects, and Engineering Programs, Region IV, United States Nuclear Regulatory Commission.
I am a Reactor Inspector in the Projects Branch #1, Project Section A in the Division of Resident, Projects, and Engineering Programs, Region IV, located in Arlington, Texas.
In this position, I am responsible for inspections and coordination of all safety-related inspections for facilities assigned to me within Region IV jurisdiction.
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I held this assignment for the Comanche Peak Steam Elec-tric Station during the period July 1974 to January 1978.
Education:
Farragut College, Farragut, Idaho (Univ. Idaho)1946-48 Mechanical Engineering / Nuclear Engineering Heald Engineering School, San Francisco, Calif. (night 1953)
G.E. School of Nuclear Engineering, Richland, Wn. (night 1943)
G.E. School of Nuclear Engineering, Richland, Wn.
(night 1954)
Pierce College, Woodland Hills, Calif.
(night 1967-68)
Engineering Management NRC Training Courses NRC Training Center Courses:
Con crete Technology & Codes Refresher Courses September 1981 Nondestructive Examination Refresher Course June 1980 Electrical Technology & Codes July 1979 BWR 4, Reactor Systems and operations Nay 1973 BWR 6 Feb. 1973 PWR W, April 1975 NRC Teactor inspection techniques Dec. 1977 Ohio State University Columbus, Ohio Welding technology and Codes Oct. 1977 Portland Cement Association
'Skokie, Ill, c
Concrete Technology and Codes Feb. 1977 Convair School for Nondestructive Testing General Dynamics Convair Aerospace Div.
San Diego, California Jan. 1976
- University of Texas at Arlington Graduate course: _ Nuclear Power Engineering Fall 1977 Advanced Problems in ME Solar Energy Spring 1978 Experience:
1971-Present:
Reactor Inspector, Region IV, U.S. Nuclear Regulatory Comission In this position I am responsible for project inspection of nuclear facilities under Region IV jurisidiction.
1955-1971 Rockwell International (formerly Atomics International, Inc.) Canoga Park, California.
Senior Facilities Project Engineer:
Assigned to the Program Office of the Fast Flux Test Facility (FFTF) Reactor fuel handling systems design and manufacturing. Responsible at project level to coordinate, plan, and program the conceptual designs, and testing of the FFTF. Duties also involved an assignment as Construction Manager, Sodium Component Test Installation (SCTI).
1 Senior Research Engineer:
Assigned to SNAP Compact Power Systems, Testing, and Launch Team. As a member of the SNAP 10A launch team, coordinated the transporation handling, launch vehicle interfacing, and pre-launch and post-launch testing of the world's first nuclear reactor to be orbited in space.
Reactor Construction Engineer / Senior Research Engineer:
Overseas on-site representative in the construction of four, 50 KW, research reactors; Tokai-Mura, Japan; Frankfurt, Germany; Berlin, Germany; and Milano, Italy.
subsequent to the overseas assignments, I was assigned as a member of the Reactor Testing unit of the SNAP experimental reactor group in the successful demonstration of the feasibility of the SNAP II, 50 KW-NAK coolant reactor concept.
. Senior Reactor Construction Engineer:
c Senior Site representative (Construction) responsible at project level to coordinate, plan, program and supervise the construction of a 40 MWe Organic Moderated Reactor (0MR) for the city of Piqua, Ohio. The assignment also included the supervision of maintenance, in charge of
. Time-and Material contract, in completing repairs and design changes and modifications.
Reactor Construction Engineer:
As the on-site representative, supervised reactor installation and associated components of first sodium cooled nuclear power reactor, Santa Susana, California.
Duties involved direct supervision of construction forces in the installation and erection of the reactor containment, reactor vessel and associated components / systems. Duties also included the development of installation and testing procedures.
1947-1955:
Kaiser Engineers and Atkinson & Jones, Richland, Washington.
Assistant Department Engineer - Mechanical Assigned to the on-site construction pro,1ect manager's staff in the construction and preoperational testing of five plutonium production reactors at Richland, Washington.
My duties involved the coordination of all work programs of the field and field engineering staff; direct field design layouts required to simplify various phe.ses of proiect con-g struction; and establishment of testing programs / procedures l
and supervision of final systems / component acceptance testing.
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