Scaffolding arrangement

Abstract

The invention relates to a scaffolding arrangement with a scaffolding assembled from individual scaffolding components for internal construction or maintenance work within a coker drum standing upright on the ground and which has a lower end portion with a cross-section which tapers in the direction of the longitudinal axis of the drum towards a closable opening at the lower end of the coker drum, the scaffolding comprising: a support section with several support posts each having a lower and an upper end, the support posts, with their lower ends being supported outside of the coker drum on the ground and each of them, through the opening provided on the lower end of the coker, extending in a vertical direction into the coker drum, wherein the support section comprises several support posts spaced from one another, a support frame comprising a plurality of support beams which are detachably connected to one another, the support frame being attached to and supported by said support section, a first working platform which is arranged on top of the support frame, the first working platform being preferably located within the tapered lower end portion of the coker drum; and a scaffold tower section having one or more further working platforms which is/are each arranged in an axial direction above the first working platform inside the coker drum. The vertical loads of the scaffolding as a whole, are solely transferred to the ground via the said support section of the scaffolding, which is fully self-supported. The invention further relates to a scaffolding for an aforesaid scaffolding arrangement (FIG. 1 )

What is claimed is: 
     
         1 . A scaffolding arrangement with a scaffolding assembled from individual scaffolding components for internal construction or maintenance work within a coker drum standing upright on the ground and which has a lower end portion with a cross-section which tapers in the direction of the longitudinal axis of the drum towards a closable opening at the lower end of the coker drum, the scaffolding comprising:
 a support section with several support posts spaced-apart from each other and each having a lower and an upper end, the support posts, with their lower ends being supported outside of the coker drum on the ground and each of them, through the opening provided on the lower end of the coker, extending in a vertical direction into the coker drum,   a support frame which is attached to and supported by the said support section,   a first working platform which is arranged on top of the support frame, the first working platform being preferably located within the tapered lower end portion of the coker drum; and   a scaffold tower section having one or more working platforms which is/are each arranged in an axial direction above the first working platform inside the coker drum; and   wherein vertical loads of the scaffolding as a whole, are solely transferred to the ground via the said support section of the scaffolding.   
     
     
         2 . A scaffolding arrangement according to  claim 1 , wherein at least part of the support posts of the support section of the scaffolding are connected to each other by a plurality of horizontally arranged crossbeams and/or diagonally arranged beams. 
     
     
         3 . A scaffolding arrangement according to  claim 1 , wherein the scaffold tower section has outriggers which project laterally from the scaffold in the direction of a vertically oriented inner wall section of the coker drum. 
     
     
         4 . A scaffolding arrangement according to  claim 3 , wherein the outriggers loosely abut against the vertically oriented inner wall section of the coker drum. 
     
     
         5 . A scaffolding arrangement according to  claim 1 , wherein the first working platform is braced by diagonal braces each of which, with its lower end, is detachably attached to the support section of the scaffolding. 
     
     
         6 . A scaffolding arrangement according to  claim 1 , wherein the support frame is connected to the upper end of the said support section. 
     
     
         7 . A scaffolding arrangement according to  claim 1 , wherein there is provided a ladder which is attached to the support section of the scaffolding and which extends through the opening of the lower section of the coker drum into the coker drum. 
     
     
         8 . Scaffolding arrangement according to  claim 1 , wherein the at least one or a plurality of working platforms of the scaffold tower section is/are accessible from the first platform by means of a staircase arrangement. 
     
     
         9 . A scaffolding arrangement according to  claim 8 , wherein the staircase arrangement is at least in part helically arranged around the longitudinal axis of the coker drum. 
     
     
         10 . A Scaffolding for a scaffolding arrangement according to  claim 1 .