ML19312A326
| ML19312A326 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 10/29/1969 |
| From: | Ross D US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Boyd R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8003180712 | |
| Download: ML19312A326 (3) | |
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UNITED STATES ATOMIC ENERGY COMMISSION
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October 29, 1969 I
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. Roger S. Boyd, Assistant Director for Reactor Projects, Division of Reactor Licensing y
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Charles G. Long, Chief, Keacter Project 3 ranch No. 3 f4 Division of Reacter Licensing a
MEETING WITH FLORIDA POWER COP 20 RATION ON CRYSTAL RIVER D!IT 3 CONTAI:DIENT DESIG:1 CHil:GES (DOCICET NO. 50-302) pg A tweting was held on October 29, 1969, with the Florida Power Corporatica to discuss the design changes in the containment as out-lined in their Amendment No. 7.
A list of attendees is attached.
A 1.
We asked for the actual relaxation value of the prestress ' eire to be used in the design.
The applicant responded: 4%.
The wire supplier has not ccen determined (British vs. Japanese).
%h Mill certs en uires are received on n haat-lot basis in either d
enae.
Prescca also does tensile testa e ac'1 eM1, ('aeginning m
Ox; and ending) and some reverse bend tests (heat le t).
Some tensile testa are on button-headed wire, as a check cn the a-4 bihty of the utre to be button-headed.
QA records vill acco:.pany the uire to the site.
2.
33 cpplicant furnished infor a! data on ptestress levels.
Thera will be only one row of prestress tendons.
3.- Regarding the. cyclie rate of loading described in Appendix 5-3, Sections 6.2.4.5 and 6.2.4.7:
Cyclic testing is + 10% about l
thr 70% ultimate tensile strength, at let torperatures.
No l
attempt is made to relate rate of loading to a dynanic value of the final design.
4.
The number of sample tendons was furnished - more could be tested if the-first test results so indicated.
5.
Installation of the bottom corponents of the vertical tendons is nov scheduled for 'the second quarter of 1970.
6.
No' relation exists between reinforcing in the test block to the reinforcing in the containment anchcrage.
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r Roger S. Boyd 7.
We noted the need for methods and calculations of s tress in the anchorage zones.
Gilbert Associates are in the final stages or' preparing a report.
No firm submit tal date is available.
8.
It appeared from Amendnent 7 that two creas of non-conservatisa were present:
a.
On page 53-10, line 6, the concrete strength was listed as 4000 psi f' It should have been 5000 psi.
On the subject of design of tee jacking force, 0.7 f' vs.0.8 f' the applicant still feels that 0.7 f', is satisfactory, and is als5, standard in the 8
industry.
b.
The ACI Code 318, Paragraph 2603 (c) is apparently violated during the tenperary stressing operation up to 0.8 f',.
We indicated that we would like to hear further discussi6n en the subject.
9.
Tenden f atigue tes ts were discussed, in particular the 50-cycle loading test.
We wanted to know the rate of loading, but vere told that no rate has been specified.
The dynamic tests are not clearly related to the building design.
- 10. We inquired about a stress aaalysis on the tasted anchorage hard-ware.
FPC is currently evaluating a Prescon report on this subject.
No filing intent was expressed.
C After a caucus we notified the applicant that 3 did not have sufficient inf ormation for concluding that the design chang 2 is acc2ptabic.
In particular ue noted a requirencat for the stress analyses and tests of the anchorage hardware. and the analysis of the enchorage zcne (concrete).
We thought that cyclic tenden tests should be better related in purpcse to the plant design, although no actual change in procedures was requested.
We said that we will continue our study of paragraph 2605 of ACI-318, and that we would appreciate further comments from the applicant.
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D. F. Ross Reactor Project 3 ranch No. 3 cc:
RFS-3 Reading D. F. Ross (2)
P. A. Morris S. Levine F. Schauer R. Shew =aker F. Schrceder D. Skovhcit Docket file C. Long ERL Eranch Chiefs R. C. DaYcun; l lD
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ATTENDEES AT FLORIDA PCW'R CORPORATION MPETING ON CONTAINMENT DCSIGN CliANGES
. Florida Power Corporation & Censultants Joel Rodgers William May Robert McKnight Waino Nisula Prescon Corporation Glenn Johnson Lccal Consultant Roy Snapp DRL D. F.
Rass C. G. Lon; R. Shc:enchar F. Schauer b
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