skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Inelastic analysis of two plates under deformation dependent loads

Abstract

Cover plates are used in current designs for high temperature gas-cooled reactors to compress the mineral fiber insulation against the inside of the liner of the prestressed concrete pressure vessel. In the upper plenum, these plates are hexagonal and specified as carbon steel; in the lower cross ducts, the plates are square and made of Hastelloy X. The General Atomic Company has specified both damage and safety limit criteria for these plates. These plates have been analyzed at these limits using the inelastic finite element computer program EPACA. The results indicate that the total strains for the square plate were within the specified values; however, the maximum deformations at the free corners indicate separation from the insulation and failure to achieve one of the design requirements. Since no material data were available for carbon steel at the limiting temperatures, it was assumed that the hexagonal plates were constructed of 2$sup 1$/$sub 4$ percent Cr--1 percent Mo material. Although this material was found to produce satisfactory performance, extrapolation of available information would lead to the conclusion that the performance of carbon steel plates would not be satisfactory at the specified conditions. (auth)

Authors:
; ;
Publication Date:
Research Org.:
Oak Ridge National Lab., Tenn. (USA)
OSTI Identifier:
4075050
Report Number(s):
ORNL/TM-5206
NSA Number:
NSA-33-022044
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 30-JUN-76
Country of Publication:
United States
Language:
English
Subject:
N77300* -Reactors-Power Reactors, Non-breeding, Graphite Moderated; 210300* -Nuclear Power Plants-Power Reactors, Non- Breeding, Graphite Moderated; *HTGR TYPE REACTORS- PRESSURE VESSELS; *PRESSURE VESSELS- LINERS; CARBON STEELS; DEFORMATION; HASTELLOY X; PLATES; STRESS ANALYSIS; THERMAL INSULATION

Citation Formats

Iskander, S.K., Collins, C.W., and Sanders, J.P. Inelastic analysis of two plates under deformation dependent loads. United States: N. p., 1976. Web. doi:10.2172/4075050.
Iskander, S.K., Collins, C.W., & Sanders, J.P. Inelastic analysis of two plates under deformation dependent loads. United States. doi:10.2172/4075050.
Iskander, S.K., Collins, C.W., and Sanders, J.P. Sun . "Inelastic analysis of two plates under deformation dependent loads". United States. doi:10.2172/4075050. https://www.osti.gov/servlets/purl/4075050.
@article{osti_4075050,
title = {Inelastic analysis of two plates under deformation dependent loads},
author = {Iskander, S.K. and Collins, C.W. and Sanders, J.P.},
abstractNote = {Cover plates are used in current designs for high temperature gas-cooled reactors to compress the mineral fiber insulation against the inside of the liner of the prestressed concrete pressure vessel. In the upper plenum, these plates are hexagonal and specified as carbon steel; in the lower cross ducts, the plates are square and made of Hastelloy X. The General Atomic Company has specified both damage and safety limit criteria for these plates. These plates have been analyzed at these limits using the inelastic finite element computer program EPACA. The results indicate that the total strains for the square plate were within the specified values; however, the maximum deformations at the free corners indicate separation from the insulation and failure to achieve one of the design requirements. Since no material data were available for carbon steel at the limiting temperatures, it was assumed that the hexagonal plates were constructed of 2$sup 1$/$sub 4$ percent Cr--1 percent Mo material. Although this material was found to produce satisfactory performance, extrapolation of available information would lead to the conclusion that the performance of carbon steel plates would not be satisfactory at the specified conditions. (auth)},
doi = {10.2172/4075050},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {2}
}