EGCR CORE STRUCTURAL ANALYSIS. THE EFFECTS OF FAST-NEUTRON IRRADIATION AND THE BOWING CHARACTERISTICS OF THE GRAPHITE COLUMNS | Zendy

S.E. Moore | Zendy; William A. Shaw | Zendy

Open Access

EGCR CORE STRUCTURAL ANALYSIS. THE EFFECTS OF FAST-NEUTRON IRRADIATION AND THE BOWING CHARACTERISTICS OF THE GRAPHITE COLUMNS

Author(s) -

S.E. Moore,

William A. Shaw

Publication year - 1961

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/4028009

Subject(s) - bowing , graphite , core (optical fiber) , materials science , shrinkage , ultimate tensile strength , neutron , irradiation , neutron irradiation , structural integrity , composite material , creep , structural engineering , nuclear physics , physics , engineering , philosophy , theology

An analysis of the EGCR core structure was made to determine the lateral deflections (bowing) of the graphite columns resulting from shrinkage caused by fast-neutron irradiation, the life expectancy of each column due to restraints imposed on the bowing, and the reaction forces induced in the supporting structures. Based on currently avallable data for EGCR type graphite shrinkage and assuming experimental loop operation, a maximum bowing potential of 3.61 in. was calculated for an interior column. It was found that strains equivalent to the rupture strains observed from tensile tests could be expected after 4 to 6 years of full-power operation. Over half of the columns will reach these strains before the 20-yr reactor design life is reached. (auth

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