ML20040C364
| ML20040C364 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 01/15/1982 |
| From: | Rogers A ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | |
| Shared Package | |
| ML20040C356 | List: |
| References | |
| NUDOCS 8201270569 | |
| Download: ML20040C364 (10) | |
Text
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s UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING BOAPD In the Matter of ARIZONA
)
PUBLIC SERVICE COMPANY,
)
et al.
)
Docket Nos. STN 50-528
)
STN 50-529 (Palo Verde Nuclear
)
STN 50-530 Generating Station,
)
Units 1, 2 and 3)
)
)
AFFIDAVIT OF A. CARTER ROGERS ON SUA SPONTE ISSUE STATE OF ARIZONA
)
)~ss.
County of Maricopa
)
I, A. Carter Rogers, being duly sworn, upon my oath state as follows:
1.
I am employed by Arizona Public Service Com-pany as Nuclear Engineering Manager.
2.
My business address is 10025 North 21st Ave-nue, Phoenix, Arizona 85021.
3.
As Nuclear Engineering Manager I am respon-1 l
sible for the civil engineering, mechanical engineering, l
nuclear engineering and fuel management sections in Nuclear Projects Management.
My resume is set forth in Attachment ACR-1 (attached).
4.
This affidavit is made with reference to Items (a), (b), (c) and (d) of the Board's Order Concerning Sua Sponte Issue, dated December 11, 1981.
8201270569 820115 DR ADOCK 050005 8
F s
I.
Response to Item (a) 5.
Item (a) reads as follows:
"The procedures effected in making slump tests, in the context of the con-tention, and in making otter tests which measure the strength and acceptability of concrete in general and in the struc-ture of the. base mats in ' particular. "
6.
The containment basemat is the foundation for the containment building.
It is designed to support the l
containment walls and the interior structures and vessels.
The basemat is a conventional reinforced concrete mat, cy-lindrical in sha'pe, approximately 161 feet in diameter and 10 feet, 6 inches in thickness.
7.
The concrete. tests performed during construc-tion of the Palo Verde Nuclear Gener
, Station ("PVNGS")
which measure or relate. to the strength and/or the accept-ability of concrete in general and in the structure of the basemats in particular are slump tests, temperature tests and compressive strength tests.
8.
The concrete slump test is performed in ac-cordance with ASTM C-143, which is a standard of the Amer-l ican Society for Testing and Materials.
The test is carried by placing concrete into a cone mold 8 inches in diam-out l
eter at the bottom, 4 inches in diameter at the top and 12 inches in height.
The cone mold is filled with concrete in three layers, with each layer constituting approximately one-third of the volume of the mold.
Each layer is uni-- 1
formly rodded with 25 strokes of a 5/8 inch diameter rod.
The cone mold is then removed from the concrete by raising it carefully in the vertical direction.
The slump is mea-sured by determining the difference between the height of the cone mold an'd the height of the concrete as measured at the displaced center of the top surface of the specimen.
9.
For the containment building basemats, con-crete with a design strength of 5000 psi was used.
The allowable slump was 3 1 1/2 inches as specified in construc-tion specifications.
An inadvertency margin of up to 1 (one) inch above the indicated maximum 3-1/2 inches was allowed for individual batches provided the average for all subsequent batches or the most recent ten batches tested, whichever was fewer, did not exceed the maximum limit of 3-1/2 inches.
If the measured slump of the concrete was not within the specified limits, a second test was made.
In the event of a second failure, the truck load of concrete was rejected cr, if the concrete was placed, a Non-conformance i
Report was written.
The Non-conformance Report was then resolved in accordance with the Quality Assurance Program i
procedures for PVNGS.
10.
Slump' tests for the PVNGS containment build-ings, including basemats, are performed for the first batch
- of concrete placed and for each additional 50 cubic yards
- A batch of concrete typically contains 10 cubic yards.
. ------m
l placed thereafter.
For all structures other than the con-tainment buildings, slump tests are performed for the first batch placed and for each additional 100 cubic yards placed thereafter.
ACI-301, a standard of the American Concrete Institute, specifies a slump test frequency of one test for each 100 cubic yards.
11.
Samples for slump tests are taken from the same batch of concrete at the batch plant and truck dis-charge, and at or near the point of placement, until ad-justments at the onsite batch plant have been made to pro-duce uniform concr.ete and the magnitudes of slump loss between the batch plant and truck discharge, and between the truck discharge sind point of placement, have been deter-mined.
After a slump loss correlation is established among the three sampling locations, the sampling points are limited to the batch plant and truck discharge.
The allow-able slump for tests at each of these two locations is the allowable slump at the point of placement (3 + 1/2 inches) plus an allowance for slump loss in transit.
Correlation tests at or near the point of placement are conducted at intervals not exceeding every 300 cubic yards for each class of concrete placed with a minimum of one test each day for each placement.
12.
The test for concrets temperature is per-formed by inserting a calibrated thermometer into a concrete sample.
There is no applicable industry standard for the temperature test procedure.
_4_
13.
For the containment buildings, including basemats, the temperature test is performed for the first batch placed and once for each additional 50 cubic yards placed thereafter.
For structures other than the contain-ment buildings, the temperature test is performed at the same frequency as the comprensive strength test for such structures as described in Paragraph No.15 hereof.
14.
The compressive strength test is performed in accordance with ASTM C-31 and ASTM C-39.
Concrete samples are taken by filling a cylinder mold 6 inches in diameter and 12 inches in height in three layers with each layer containing about one-third of the volume of the cylinder.
Each layer is uniformly rodded with 25 strokes of a 5/8 inch diameter rod.
During the first 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after molding, all of the test specimens are stored under conditions that maintain a temperature in the range of 60 F to 80*F.
The specimens are then removed from the cylinder molds and cured in a humidity-controlled environment for a specified length l
of time (28 or 91 days) prior to testing for compressive i
strength.
During the curing period, the atmosphere where the specimens are stored has a temperature of 73.4 + 3* F and a relative humidity of not less than 95%.
After being cured for the desired period of time, the test specimen it capped with a sulphur capping compound to ensure that the ends are plane.
The specimen is then placed in a calibrated machine that applies a measurable compressive force along l.
~
~
the axis of. the specimen.
The force is increased until the concrete specimen breaks.
The compressive strength is calculated by determining the average of two cylinder strengths obtained at the designated age from the same test batch.
15.
The frequency of compressive strength tests for the containment buildings, including basemats, is one set of three cylinders for each 100 cubic yards or a minimum of one set per day for each class of concrete placed.
This frequency is in accordance with ACI-301.
The frequency of compressive strength tests for all other structures is the same as for the containment buildings, except that for large continuous structural concrete placements greater than 1000 cubic yards, a net of three cylinders is taken for each 100 cubic yards for the first 500 cubic yards placed and for each 250 cubic yards for the remaining concrete placed.
II.
Response to Item (b) l 16.
Item (b) reads as follows:
"The interpretation of the results of these respective tests and the manner and importance in which each is meaning-ful as a criterion for conformance to design cpecifications. "
I 17.
The results of the slump tests, temperature tests, and compressive strength tests are evaluated in ac-l cordance with ASTM C-94 and Bechtel Specifications 13-CM-101, i
13-CM-191 and 13-CM-365. Mv+
w
13.
The concrete slump test is used to confirm that the concrete being produced is of a consistent work-ability.
Although the slump test is an indicator of con-crete quality, it does not measure the strength of the con-crete and is not a final acceptance test.
At PVNGS, due to heavy reinforci;ag in the containment structure, a fluid (high slump) mixture is desirable.
However, to minimize j
surface cracking caused by extreme summer heat, a maximum slump of 3-1/2 inches for 1-1/2 inch maximum size aggregate was specified.
In order to compensate for the lack of
- fluidity, additional vibration of the concrete was done during placement.
19.
Temperature tests are performed in order to ensure that the concrete temperature is maintained between 40*F and 70 F at the time of concrete placement.
Tempera-ture tests are in-process tests performed primarily to ob-tain some preliminary assurance that the quality of the concrete being placed will meet specification requirements.
20.
The compressive strength test is the most significant and direct measurement of the strength of the concrete.
It is a verification test which provides conclu-sive evidence of the concrete's strength and is the ultimate criterion for determining conformance to design specifica-tions.
If the compressive strength test fails to meet spec-ified strength requirements, a Non-conformance Report is written and resolved in accordance with the Quality Assur-ance Program procedures for PVNGS.
III. Response to Item (c) 21.
Item (c) reads as follows:
"The results of typical measure-ments on and near the days the alleged infractons occurred including the accur-acies, precisions and uncertanties in i
their results.
(The dates above, to-gether with any relevant laboratory test reports are to be supplied to the Joint Applicants and the Staff by the Inter-venor.)"
22.
The Unit 1 basemat was made in two placements
--Nos.
1C012 and 1C013.
Placement No. 1C012 was made on June 28 and 29, 1977, and Placement No. 1C013 was made on July 7 and 8, 1977.
The Unit 2 basemat was made in one placement--No. 2C012/013--from May 24 to 26, 1978.
23.
The slump test results for the containment basemats varied between 2 inches and 3-1/2 inches for Unit 1 and between 1 inch and 3-1/2 inches for Unit 2.
The average j
slump was 3 inches for Unit 1 and 2-3/4 inches for Unit 2.
24.
The temperature test results for the contain-ment basemats varied between 42*F and 70*F for Unit 1 and 1
l between 41 F and 68*F for Unit 2.
The average temperature was 49*F for Unit 1 and 54*F for Unit 2.
25.
The compressive strength test results for the Units 1 and 2 basemats were all greater than the design strength of 5000 psi.
The average of the compressive l
strength tests was 5460 psi for Unit 1 and 6470 psi for Unit 2.
l
.~
26.
With respect to the accuracy of the test measurements at PVNGS, slump measurements are accurate to within 1/4 inch, temperature measurements are accurate to within 2
- F, and compressive strength measurements are ac-curate to within 10 psi.
IV.
Response to Item (d) 27.
Item (d) reads as follows:
"A citation of the industry stan-dard (ASTM and/or other) method of test-ing and a description of the mode of calibration of the test equipment on which the accuracy, above, is based."
28.
Concrete testing at PVNGS is performed in ac-cordance with the ASTM and ACI standards and Bechtel speci-fications identified in paragraphs nos.
8, 10,14,- 15 and 17 hereof.
29.
The compression machine used in testing con-crete cylinders for strength and the thermometers are cali-brated on an annual basis by a qualified calibration ser-vice.
C..: P A.
Carter Rogers l
Subscribed and sworn to before me this
/6#
day of G A A/ ( / // # t/
1982.
fAwbh 0Lawbw Notary' Public My commission expires:
l W1_ 24,19 53 1
d7
4 Attachm:nt ACR-1 RESUME A. CARTER ROGERS
Title:
Nuclear Engineering Manager Nuclear Projects Management Arizona Public Service Company Responsible for the civil engineering, mechanical engineering, nuclear engi-nee"4.ng and fuel management sections in the Nuclear Projects Management.
Educational
Background:
University of Connecticut M.S. in Chemical Engineering (1968)
University of Missouri B.S.
in Chemical Engineering (1961)
Professional Level Experience:
U.S. Army Officer (1961-1964',
Pratt & Whitney Aircraft Fuel Cell Develop-ment (1964-1966)
Combustion Engineering:
Nuclear Design Engineer (1966-1967);
Project Engineer for Plant Engineering (1967-1970);
Senior Project Engineer l
(1970-1972).
Responsible for St. Lucie, and for floating nuclear power plant i
studies.
Supported NSSS turnkey propos-l als by directing nuclear island work in I
Switzerland, Mexico and Finland.
Arizona Public Service Company:
Senior Consulting Engineering, Nuclear Services (1972-1976); Nuclear Engineer-ing Supervisor, Nuclear Services (1976-1979); Nuclear Engineering Man-
- ager, Nuclear Projects Management (1979-present) l
_.