ML19206B110
| ML19206B110 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 06/20/1968 |
| From: | Racquel Powell US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Boyd R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 7904230002 | |
| Download: ML19206B110 (4) | |
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. a UNITED STATES GOVERNMENT Memorandum To Roger S. Scyd, Assistant Director DATE: June 20, 1966 for Reactor Projects, EFL
(!":!PJJ) Robert L. Tedesco, Chief, RPB-2, DFL $
FROM
' g, 3, pavelig Reacter Project 3rsnen 2, CFL 5t;BJECT: M.I';USS CF THE PEESENTATICN CF GECUTED '"INECN TEST EISULTS TO ACES SU3CC.W.IZE ANO OF1 - ECCEET NO. 50-320 Cn June 13, 1968, a presentatica was =ade to the ACES Su"
- **ee and ORL staff of the test results perfor:ed to show that grouting of tendons can provide cerrosion protectico thrcugh cceplete penetration of gout arcu-5 the strand type tenden. The results of the grouting test is su==arized in
" Report en Greuted Tendon Program", Jersey Central Power and Light Cecipany Nuclear Electric Generating Station - Oyster creek Unit No. 2, dated June 1, 1968. The list of attendees is attached.
Discussien The presentation was made by Burns & Roe; lue., the architect engineer, for the Jersey Central Power and Light Company to support the use of greuted tendens proposed to be used in the construction of the Oyster Creek Nuclear Pcver Plant Unit No. 2 containment building.
J. V. Nee'.-j cf Jersey Central Power and Light Company incicated that the descript &. of the grouted tenden test and the results giv^
in the "Eeport en Greuted Tenden Progres" would be submitted as A=endmen* 2 to the Oyster Creek Unit No. 2 PSAR.
An additional test program is planned to assure that full gout penetretien of the tenden duct is possible in double curvature ducts with one curve being in the vertical plane. The double curvature tendons :est results are expected to be ccepleted by Septe=ber 1968 after which a report will be submitted to DRL.
Jersey Central Power and Light Company indicated that their selection of grouted tendens over greased tendons was cade only en technicel bases and economics was not considered in their selection.
Following the presentation problem areas vere tiscussed. Scce of the areas touched upcn were:
1.
Corrosien The tests perfor=ed appear to indicate tat greuted tendcas can be accceptished with full penetratica of grout around e
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Roger S. 3cyd June 2C, 19c5 each tenden wire. It was the JCFL, BLR and their censultant,
Senupack & Asscciate's opinica that grcuted tendens offered as gccc or better corresicn protection than gressed tendens.
2.
Pelaxatien cf Stressed Tenden B&R and their censultants indicated that prediction of changes in the tendens prestress force can be conservatively calculated to ensure =inicus tenden stress requirements can be =e through-cut the h0 year plant life. The =ethod used to predict the relaxaticn and shrinkage effects on stressed tendons was checked against an installed tenden and good agreement was achieved.
3 Costs B&R indicated that ecsts of installation of gressed or greuted tendens are approxi=ately the same with any difference in ecs:
being reflected by the suppliers preference. No cost estimates had been =ade for any surveillance pregram.
h.
Hydrogen Embrittlement and Fret Corrosien The problem cf hydregen e= brittle =ent of tendens is not expected to occur since no dissi=1lar =aterials vill be used which could provide a scurce of hydrogen. Fret corrosien due to vibration througneut the 40 year tenden life was teuched upon with no evidence presented to indicate that this was or was not a problem.
5 Surveillance The groutec tenden dees not permit surveillance of the tenden er its enchersge thrcughout the LO year plant life. It vas tne opinien of BLR and their censultants that greuting of tendens provides sufficient protection against corresten and any relaxatica effects cculd be predicted conservatively such that the capability of surveillance of tendens is not required.
Summary The results c:' 'r.e creuted tendcas sill be submitted as Amend =ent 2 for Oyster C aek Cut lau P:sar Picot Unit 2 in suppcrt of the use of tne greuted tendens in tna centainment building.
Uo committent:
<a e
~cc by eitner the ACES Subecesittee or DEL except that tney woula review tr.e greuted tendon design <nen tne Amendment 2 is received.
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Roger S. Scyd 3-June ao,1963 The review of tne pre;csed greuted tendens vill be cade only as it applies to the Oyster Creek Unit 2 plant centain=ent design. There are several areas of Ccf4cern to ACES and ERL such as [Cng term CoricSicn protection experience, ability in the field of greuting quality centrol and assurance of complete penetration by greut which vill -require an in-depth review before greuted tendens cculd be accepted as equivalent to the presently approved gessed tenden design.
Atta chment :
List of Attendees Distribution:
Suppl.
s:-
CRL Reading RP3-2 Reading P. A. Morris F. Schroeder S. Levine D. Skovhclt 3rsnch Chiefs, ORL N. Eavisen R. C. CeYcung E. G. Arndt A. L. Gluck= ann R. Pcvell CO (2) m e
r.
A"'"EEEES METING CN GRCtJ"ZD TEEONS_
June 13, ic68 ACES General Public Utilities H. Etheringten
?. W. Hevard, Jr.
A. A. C' Kelly C. P. Siess Pfckard & Leve J. C. McKinley, Staff E. H. Phelps, Censultant K. Woodard United Engineers & Constructicn Co.
AEC - ORL A. Ti==e N. Eavisen R. C. DeYeung Schupack & Associates E. G. Arndt A. L. Gluckmann M. Schupack R. Pcvell R. Tedesco Ccepliance Jersey Central Pever & Licht Co.
H. 3. Hendersen J. V. Neely E. G. Rocce Burns & Ree, Inc.
J. C. Archer G. A. Herstead P. Nerdene P. L. DeRien:o m
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