Radiant energy – Radiation controlling means – Shielded receptacles for radioactive sources
Patent
1987-10-30
1989-04-25
Fields, Carolyn E.
Radiant energy
Radiation controlling means
Shielded receptacles for radioactive sources
2505071, 376272, G21F 500
Patent
active
048250880
ABSTRACT:
An improved, lightweight cask assembly is disclosed herein. The cask assembly generally comprises at least two, cylindrically shaped and concentrically disposed structural walls formed from a titanium alloy and a shielding wall disposed within and supported by the titanium structural walls. Both the inner and outer walls are formed from a high-strength titanium alloy. The use of such an alloy advantageously allows the thickness of the inner wall to be minimized, thereby optimizing the shielding geometry of the shielding wall and minimizing the weight of the amount of shielding material used in the cask. The use of such an alloy in the outer structural wall also minimizes the weight of the outer wall thereby contributing to the weight reduction of the cask assembly as a whole. The upper and lower edges of the inner and outer structural walls are bound together by a reinforcing ring and an end plate assembly likewise formed from a titanium alloy. In the preferred embodiment, two separate shielding walls made of depleted uranium and particles of boron suspended in a silicone matrix are disposed in the spaces between inner, intermediate and outer titanium walls, respectively.
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Defense High Level Waste (DHLW)/Defense Generated Remote Handled Transuranic Waste (RH TRU) Dual Purpose Cask, vol. II: Technical Proposal, Jul. 23, 1986. Submitted to U.S. Department of Energy in Response to: RFP No. DE-RP04-86AL33569.
Mello Raymond M.
Nair Balakrishnan R.
Richardson Raymond V.
Berman Jack I.
Fields Carolyn E.
Westinghouse Electric Corp.
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