Patent ID: 9653189
Date: 2017-05-16
CPC Classifications: B66C,G21C,G21F,Y02E

Claim:
1. A bridge crane for moving a spent fuel canister comprising, in combination: a pair of stationary spaced-apart rails; a bridge selectively movable along the pair of stationary spaced-apart rails; a shielded bell trolley movable along the bridge and carrying a shielded bell below the bridge; wherein the shielded bell is cylindrical shaped forming an interior space configured for receiving the spent fuel canister therein and comprising a material for reducing radiation exposure of the spent fuel canister outside the shielded bell when the spent fuel canister is in the shielded bell; a canister trolley movable along the bridge and carrying a lifting mechanism for raising and lowering the spent fuel canister into and out of the shielded bell located below the bridge; wherein the bridge includes a first pair of spaced-apart rails for supporting the canister trolley and a second pair of spaced-apart rails for supporting the shielded bell trolley; wherein the canister trolley is configured to selectively move along the bridge relative to the shielded bell trolley, and wherein the lifting mechanism is configured to selectively move relative to the shielded bell trolley and the shielded bell; wherein the canister trolley and the shielded bell trolley are configured to selectively move together along the bridge at the same time while the lifting mechanism of the canister trolley supports the spent fuel canister within the shielded bell carried by the shielded bell trolley; and wherein the load path of the shielded bell does not pass through the canister trolley and the load path of the shielded bell does not pass through the lifting mechanism.