Reactor vessel handling method

Abstract

One of methods for carrying out a reactor vessel according to the present invention comprises the steps of removing an overhead traveling crane in a reactor containment vessel of a pressurized water reactor, or the steps of, in an area where an overhead traveling crane is installed, operating the overhead traveling crane to move aside for creating a space, through which the reactor vessel is able to pass, and then carrying out the reactor vessel through an opening provided in a top portion of the reactor containment vessel. With the present method, the reactor vessel of the pressurized water reactor can be carried out in a short time with high efficiency.

1 . A reactor vessel handling method comprising the steps of removing an overhead traveling crane in a reactor containment vessel of a pressurized water reactor, and then carrying out a reactor vessel through an opening provided in a top portion of said reactor containment vessel.  
     
     
         2 . A reactor vessel handling method comprising the steps of, in an area within a reactor containment vessel of a pressurized water reactor where an overhead traveling crane is installed, operating said overhead traveling crane to move aside for creating a space, through which a reactor vessel is able to pass; and 
 then carrying out said reactor vessel through an opening provided in a top portion of said reactor containment vessel.    
     
     
         3 . A reactor vessel handling method comprising the steps of reinforcing an overhead traveling crane in a reactor containment vessel of a pressurized water reactor, lifting a reactor vessel up to an operating floor by using the reinforced overhead traveling crane, and then carrying out said reactor vessel through an opening provided in a side wall of said reactor containment vessel.  
     
     
         4 . A reactor vessel handling method according to  claim 3 , wherein an equipment carrying-in opening in said reactor containment vessel is utilized as said opening.  
     
     
         5 . A reactor vessel handling method comprising the steps of removing an overhead traveling crane in a reactor containment vessel of a pressurized water reactor, and carrying out a reactor vessel through an opening provided in a top portion of said reactor containment vessel; and 
 then carrying in a new reactor vessel to a predetermined position within said reactor containment vessel through said opening.    
     
     
         6 . A reactor vessel handling method comprising the steps of, in an area within a reactor containment vessel of a pressurized water reactor where an overhead traveling crane is installed, operating said overhead traveling crane to move aside for creating a space, through which a reactor vessel is able to pass, and carrying out said reactor vessel through an opening provided in a top portion of said reactor containment vessel; and 
 then carrying in a new reactor vessel to a predetermined position within said reactor containment vessel through said opening.    
     
     
         7 . A reactor vessel handling method comprising the steps of reinforcing an overhead traveling crane in a reactor containment vessel of a pressurized water reactor, lifting a reactor vessel up to an operating floor by using the reinforced overhead traveling crane, and carrying out said reactor vessel through an opening provided in a side wall of said reactor containment vessel; and 
 then carrying in a new reactor vessel to a predetermined position within said reactor containment vessel through said opening.    
     
     
         8 . A reactor vessel handling method according to any one of  claims 1  to  7 , wherein said reactor vessel is carried out together with core internals.  
     
     
         9 . A reactor vessel handling method according to any one of  claims 1  to  8 , wherein said reactor vessel is carried out in a state in which a radiation shield is combined with said reactor vessel.  
     
     
         10 . A reactor vessel handling method comprising the steps of, in a state in which an overhead traveling crane in a reactor containment vessel of a pressurized water reactor is removed, carrying in a new reactor vessel to a predetermined position within said reactor containment vessel through an opening provided in a top portion of said reactor containment vessel.  
     
     
         11 . A reactor vessel handling method according to  claim 10 , wherein after carrying in said new reactor vessel, said overhead traveling crane is restored to an original state.  
     
     
         12 . A reactor vessel handling method comprising the steps of, in a state in which an overhead traveling crane in a reactor containment vessel of a pressurized water reactor is reinforced, carrying in a new reactor vessel to a predetermined position within said reactor containment vessel through an opening provided in a side wall of said reactor containment vessel.  
     
     
         13 . A reactor vessel handling method according to  claim 12 , wherein reinforcing members for said overhead traveling crane are removed after carrying in said new reactor vessel.  
     
     
         14 . A reactor containment vessel of a pressurized water reactor, which covers a reactor vessel and an overhead traveling crane installed above said reactor vessel, 
 wherein an opening allowing said reactor vessel to be carried out through said opening is provided in at least one of a top wall and a side wall of said reactor containment vessel.    
     
     
         15 . A reactor containment vessel according to  claim 14 , wherein an opening/closing mechanism for opening and closing said opening is provided.