Abstract: When constructing a steam generator, buckstay modules are joined with tube wall units to form buckstay and tube wall modules while the boiler steel structure is being erected, and they are temporarily placed within the boiler steel structure level by level. Then an external part of the boiler top main grid is constructed whose beams are flush with the tube walls of the buckstay and tube wall modules. Then the boiler wall is mounted by aligning and welding the individual tube wall modules from top to bottom. Simultaneously, the internal components are constructed on the boiler base and hoisted to installation height. Preassembling buckstay and tube wall modules eliminate the need for inserting buckstays or tube walls from above through the boiler top main grid. For this reason, the roof opening can be smaller than usual. The inner boiler top main grid therefore does not require its own main beams, which saves a substantial amount of steel.

Abstract: When constructing a steam generator, buckstay modules are joined with tube wall units to form buckstay and tube wall modules while the boiler steel structure is being erected, and they are temporarily placed within the boiler steel structure level by level. Then an external part of the boiler top main grid is constructed whose beams are flush with the tube walls of the buckstay and tube wall modules. Then the boiler wall is mounted by aligning and welding the individual tube wall modules from top to bottom. Simultaneously, the internal components are constructed on the boiler base and hoisted to installation height. Preassembling buckstay and tube wall modules eliminate the need for inserting buckstays or tube walls from above through the boiler top main grid. For this reason, the roof opening can be smaller than usual. The inner boiler top main grid therefore does not require its own main beams, which saves a substantial amount of steel.

Abstract: A cutting apparatus for severing a wire continuously advanced through the apparatus along a wire path in a feeding direction parallel to the wire axis, comprises a carriage supported for displacement parallel to the feeding direction; two cutting members connected with the carriage; a support arm articulated to at least one of the cutting members; a displaceable anchor member to which the support arm is articulated by means of a support joint arranged on the support arm at a distance from the cutting member; a drive for moving the carriage in and opposite the feeding direction to cause, with the cooperation of the anchor member and the support arm, a motion of the cutting member in an arcuate path towards and, subsequent to severing, away from the wire and the other cutting member; and a force-exerting arrangement for shifting the anchor member to effect a displacement of the support joint and the support arm for affecting the course of the arcuate path of the cutting member.