Patent Number: 6,308,844

Title: Method for handling an equipment inside a building by a crane installed outside

Abstract: A method for handling an equipment inside a building by a crane installed outside; the method being employed when leading the wire hanging from the boom of a crane installed outside of a building (nuclear reactor containment vessel, into the building through an opening provided on the building, and lifting up or down an equipment inside said building by said wire. The said method includes a process for measuring by a three-dimensional measuring device which is positioned apart from the crane the shift of the boom caused by transfer of dead load of the equipment to the wire, in the course of transferring dead weight of the equipment between the wire and a structure inside the building, and correcting the position of the boom, by moving said boom up or down, back to a direction opposite to the shift so as to lift up the equipment vertically.

Inventors: Okada; Hisako (Hitachi, JP), Hasegawa; Hiroshi (Hitachi, JP), Miura; Jun (Hitachi, JP), Miyahara; Ryohei (Hitachi, JP), Ushiroda; Kouichi (Hitachi, JP)

Assignee: Hitachi, Ltd.

International Classification: B66C 13/04 (20060101); B66C 13/46 (20060101); B66C 13/08 (20060101); B66C 13/18 (20060101); B66C 013/46 ()

Expiration Date: 10/30/2018