ML20154F135
| ML20154F135 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon, 05000000 |
| Issue date: | 03/03/1969 |
| From: | Andrea Johnson, Spencer G US ATOMIC ENERGY COMMISSION (AEC) |
| To: | |
| Shared Package | |
| ML20154C370 | List:
|
| References | |
| FOIA-88-156 50-275-69-02, 50-275-69-2, NUDOCS 8805230112 | |
| Download: ML20154F135 (5) | |
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U. S. ATOMIC ENERGY CO.91ISSION DIVISION OF COMPLIANCE REGION V Report of Inspection C0 Report No. 50-275/69-2 Licensee:
Pacific Gas & Eleccric Compar.y Construction Permit No. CPPR-39 Category A Date of Inspection:
March 11, 1969 Date of Previous Inspection:
February 7, 1969
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Inspected by:
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A. D. Johnson Reacto(Inspector
'4 i l Reviewed by:
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G. S. Spencer Senior Reactor Inspector Proprietary Information:
None SCOP 2 Type of Facility:
Pressurized Water Reactor Power Level:
3250 Mwe Location:
Diablo Canyon near San Luis Obispo, California Type of Inspection:
Routine - Announced Accomnanying Personnel:
J. L. Crews, Reactor Inspector and' G. S. Spencer, Senior Reactor Inspector Scope of Inspection:
The inspection was conducted to provide an opportunity for the inspectors to becomo acquainted with Pacific Cas & Electric Company's (PCLE) current onsite organization and personnel and to permit direct observations of the status of construction activities.
8805230112 880510 PDR FOIA MCMILL AN88-156 PDR
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(f StROt.ARY The applicant has submitted bid specifications to a list of selected firms for the construction of the containment building. Of interestf!was the requirement imposed on the prospective contractors concerning ' Visits to other nuclear plants currently under construction.
Also, special craining on concrece_ production and placemcat is planned for onsito inspectors.
Based on information obtained from.the applicant's onsito personnel, the plant site is expected to be ready for the selected contractor to begin work on the containment structure on June 1,1969. Concreto place-ment is scheduled to commence about June 15, 1969.
The onsite meteorological data collection systems were verified to be consistent with the deceriptions provided in the preliminary safety analysis report.
DETAILS 1
A.
Persons contacted John W. Woodward - Asst. Construction Sept., Civil Structures Robert V. Faricy - Resident Engineer Harvey Peterson - Field Engineer Dave Maxwell
- Soils Engineer B.
On-Site personnel Mr. Farley stated that approximately 25 PG&2 cmployees are currently at the site. He added that they were primarily civil engineers, inspectors, surveyors and clerical. At the present, Mr. Farley is the Resident Engineer-in Charge. Farley stated that PG&E's onsite administrative organization would be enlarged as the need requires.
C.
Statun of Conntruction
'the foliovion ialocc.r.civa c.,acecai..g cae coautruccion status of c;.e project was obtained by direct observation and discussions with Messrs.
Woodward and Farley.
1.
Farley estimated that approximately 300,000 cubic yards of over-burden soil and bedrock were still to be removed from the reactor site area. The excavation remaining to be completed consisted of (1) lowering a hillside section of the area an additional 20 to 30 feet, and (2) excavating below grade lovel for the containment structure.
3 2.
The sandstone bedrock material being removed frou, ac reactor site area (base of hill) was being used as fill m serial for the 250 kv switchyard in Diablo Canyon. The excavated adobe material was being deposited in the area where the 500 kv switchyard will be located (sce pSAR Figure 2-3; site plan for relative locations of plant and switchyards).
3.
PG&E field inspectors were observed at the b 11 area.
Faricy explained that the inspectors were responsib to verify that the contractor was installing the fill materi..! in accordance with the contract specifications.
4.
Mr. Farley showed the inspectors the applicant' Jicld laboratory used for testing soils. The laboratory was housed in a trailcr equipped with the necessary tools to enabic the performance of standard soil tests.
Mr. D. Maxwc11, Soils Engineer, stated that currently, moisture and compaccion tests wore being performed on the switchyard fill areas to assure that the fills (when completed) will comply with the specifications.
5.
The contract covering the excavation vork at the plant site calls for completion of this work by June 1,1969.
Faricy stated that the schedule is "tlaht", but believed that the contractor would complete the work within the specified time, barring, of course, unforcscen delays, principal among which might be weather conditions.
D.
Containment Construction Schedulo - Prospective Contractor Mr. Woodward stated that the specifications for the construction of the containment structure were sent to selected construction firms on March 10, 1969, with bids to be submitted by May 15, 1969, and work to commence on June 1,1969.
According to Woodward, one of the requirements imposed upon prospective bidders was that, prior to submitting a bid on the project, responsible personnel of the firm visit one or more nuclear plants under construction, to assure that they were well aware of the complexitics and the stringent requirements involved in this type of contract. Woodward identified, some of the prospective bidders as follows:
Guy F. Atkinson Morrison-Xnudson Wright Peter Kiewit Sons Gordon Ball Lechtel Corporation
4 Concerning the containment steel liner, Woodward state. that the opportunity to bid was limited to the following three Jirms:
Chicago Bridge and Iron Pittsburgh Des Moines Steel Graver Tank and Manufacturing Company According to Mr. Woodward, PG&E is to purchase a fully auto =atic concrete batch plant for the project. However, it will be operated by the selected contractor. The plant is to include digital record-ing equipment for individual bacch ingredients. The batch plant and weighmaster are to be certified by the State of California and/or County of San Luis Obispo.
The inspectors briefly reviewed the contract specifications for concrete. The specifications described a program for the tensile tu;cing of Cadweld splices in the concrete reinforcing seccl. The program includes the testing of a combination of sister and produccion splices for each splicing crew, splice position (horizontal or vertical) and reinforcing steel grade according to the following schedule:
One out of tha first 10 splicos Three out of the first 100 splices Two out of each subsequent 100 splices Twenty-five percent of the total splices tested according to the 3
above schedule are to be productioa splices and the balance are to be sister splices.
The specifications require a 1007. visual inspection of finished Cadweld splicos, and stacc that "Sound, non-porous fillcr metal must be visible at both ends of the splice sleeve and at the tap hole."
Two requirements of the specifications were the subjects of part eular discussion botucen the inspectors and Mr. Woodward.
The first related to the tensile testing schedule for Cadweld splices, specifically the statement "three out of the first 100 splices". Mr. Woodward stated that the requirement seemed to contain a typographical error, and probably should be corrected L
to read "three out of the next 100 splices".
The second area related to the requirements which must be satisfied by the visual inspections of Cadweld splices. The inspectors asked if, in addition to the requirement that filler metal be visibic at both ends of the splice s1covo, there was to be a limitation applied to the maximum void area detected by visual inspection?
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~5-Mr. Woodward stated that consideration would be given to both inquiries by the inspectors.
The tensile testing program described above calls for a losser number of splices to be tested than are suggested in "Reactor Technology Memorandum - Reinforcing 3ar Cadweld Splices", dated October 29, 1968. This point was not discussed with Mr. Woodward or other persons contacted, however.
1 Woodward also pointed out that,the applicant intends to do much of the concrete testing to assure that the contractor produces t
concrete of proper quality. He added that the quality control inspectors will be trained by the Company's Engineering Depart-(
ment prior to the actual start of concrete placement. The training according to Woodward, will also include seminars given by representatives of the coment vendor and will emphasize proper procedures for production, testing and placement of the concrete.
E.
Meteorological Data Mr. Peterson, Field Engineer, directed the inspectors' attention to the locations of six on-site meteorological data collection systcas. The identified systems were verified to be consistent with the proposed systems described in Section 2.3.4. of the Preliminary Safety Analysis Report.
Mr. Peterson stated that the recording instrumentation at the station on Diablo Crcok had been out of service for a few weeks because the instruments had been damaged by water during the recent heavy rains.
He added that the stations are checked on a daily basis (5 days /wcek) to I
assure continued operation of'the data recording equipment.
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