Radiant energy – Radiation controlling means – Shielded receptacles for radioactive sources
Patent
1994-09-01
1996-01-02
Berman, Jack I.
Radiant energy
Radiation controlling means
Shielded receptacles for radioactive sources
376272, 976DIG345, G21C 1900
Patent
active
054811171
ABSTRACT:
A shipping container is provided for a hexagonal nuclear fuel assembly including a top nozzle having a top end, an outer barrel, an external shoulder, and an inner barrel; a plurality of grids which support fuel rods; and a bottom nozzle having an internal shoulder within a recess, a spherical taper, and a bottom end. The container may include a housing, a support for the fuel assembly, a top nozzle holder secured to the support, plural grid supports secured to the support, plural clamping frames for clamping the grids, plural guide plates for guiding the fuel assembly between adjacent grid supports, and a bottom nozzle holder secured to the support. The top nozzle holder may include a shoulder holder for holding the external shoulder, an end holder for enclosing and holding the top end, and a shoulder clamp for clamping the shoulder holder to the support. The shoulder holder may include a resilient split ring for positioning around the inner barrel and a resilient split support for encasing the resilient split ring. The grid supports may each include two wedges for supporting two sides of the grid, a base plate for fixedly supporting the two wedges thereto, a bearing pad fixedly mounted to the support for slidably supporting the base plate, and shoulder screws for limiting a sliding motion of the base plate on the bearing pad. The guide plates may have a guide side and two surfaces for guiding the two sides of the grids.
REFERENCES:
patent: 4780268 (1988-10-01), Papal et al.
patent: 4800283 (1989-01-01), Efferding
patent: 4803042 (1989-02-01), Gilmore et al.
patent: 4908515 (1990-03-01), McLeod
patent: 5035342 (1991-07-01), Houghton
NRC Rules and Regulations, 10 CFR 71, pp. 203-239.
U.S. Nuclear Regulatory Commission, Certificate of Compliance for Radioactive Materials Packages, No. 5450, Rev. No. 32, USA/5450/AF, pp. 1-7.
U.S. Nuclear Regulatory Commission, Certificate of Compliance for Radioactive Materials Packages, No. 9239, Rev. No. 2, USA/9239/AF, pp. 1-4.
Gilmore Charles B.
Hille Nick W.
Berman Jack I.
Beyer James
Westinghouse Electric Corporation
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