STP363: Vacuum Systems for Dynamic Studies of the Engineering Properties of Materials During Exposure to Nuclear Reactor Irradiation

    Hill, O. H.
    General Dynamics Corp., Fort Worth, Tex.

    Kerlin, E. E.
    General Dynamics Corp., Fort Worth, Tex.

    Smith, E. T.
    General Dynamics Corp., Fort Worth, Tex.

    Pages: 21    Published: Jan 1964


    Abstract

    An experimental assembly has been developed for simulating both the nuclear-reactor radiation and the space environment to which engineering materials will be exposed during flights in nuclear-powered space vehicles to altitudes of 150 miles. Vacuum systems accepting gas loads exceeding 3000 liters per sec at 10−6 torr have been designed and constructed for dynamic studies of the engineering properties of materials during exposure to radiation from the Ground Test Reactor (GTR) at General Dynamics Corp., Fort Worth (GD/FW). The vacuum-irradiation systems have a test volume 20 in. in diameter and 30 in. high in which specimens may be subjected to doses of gamma photons up to 109 ergs per g (C) per hr gamma and 5 × 1010 neutrons per sq cm per sec (E > 2.9 Mev). The system's operational characteristics, growth capabilities, shielding requirements, and associated hardware for dynamic monitoring of lubricant efficiency and moduli properties of materials are discussed, together with the engineering experience accumulated to date.


    Paper ID: STP47058S

    Committee/Subcommittee: E10.05

    DOI: 10.1520/STP47058S


    CrossRef ASTM International is a member of CrossRef.