DD210943A1 - METHOD FOR MOUNTING A CONTAINMENT IN A STEEL CELL COMPOSITE CONSTRUCTION - Google Patents

Abstract

The invention relates to the construction and assembly technology in the construction of containments in steel cell composite construction in nuclear power plants. It is goal d. Invention, the structural engineering effort, in particular to reduce the required crane use. The object of the invention is d. Schaffg a special Montageverfah. f. d. Assembly of containments in steel cell composite construction. The Aufg. is solved by d. Welding individual steel cell segments with and under a raised unit to a cylinder ring.

Description

Title äer._grfindung

Method for mounting a containment in steel cables »composite construction

The invention relates to the construction and assembly of sonology in the construction of containments in Stahlse11enverbundbau ~ way in nuclear power plants.

Characteristic of the known technical solutions

The radioactive part of a nuclear power plant with its main plants of the first cycle (reactor, steam generator u »a.) Is enclosed by a gas-tight structure. Different types of construction are used for this building »During the assembly of this building in the Beznau nuclear power plant, designed as a two-storey confectionery, the hoisting method was already applied in 1965 in Switzerland (International Trade Fair for the Nuclear Industry - roaolex 69 / Experience in the Construction of the Beznau Nuclear Power Plant) , This two-compartment container consists of an inner shell of steel (steel liner) and a shell enclosing this shell at a distance of 1.50 m. In the Beznau NPP, the steel liner was mounted by means of a lifting process. * The assembly of the upper cylinder ring and dome was carried out after assembly of the Bodessohale · Me The other cylindrical rings of the steel liner were installed on a mounting platform with a concentric crane in containment.

.2aüKT. 1989 * 044 (.GS - 2.-

under the lifted mounted part of the steel liner ", The steel liner was lifted under inserts of spindle jacks, which were arranged outside the steel liner". , In the construction of the Beznau NPP, the so-called Hebag procedure (O ₀ Büttner, Hiibverfahren in Hoohbau ₉ TOB Verlag für Bauwesen _$ Berlin 1971, pp. 30-38) was applied. "WP% 295 is a lifting facility for the batch erection of According to the method, successive box-shaped room units with at least one projectile transverse wall between the outside on the longitudinal sides of the building outline are located in terrain elevation one after the other Lifting devices with road-bound, preferably track-bound transport devices inserted, positioned and connected to a Gesohoßeinheit "Subsequently, the Gesohoßeinheit is raised by more than a storey high." After completion of another Gesohoßeinheit the elevated Gesohoßeinheit is set off mounted and lifted together "Both assembly methods are based on the linzatz of lifting methods and require the reduction of the lifting eye insert"

Both methods are not transferable to the assembly of closed cylinder rings of a steel cell attachment. From sohweißfeeohnisohen reasons, the production congruent cylinder ring © a containment in Stajblzellenverbunäbauweise not möglioh _e

The object of the invention, the "bauteohß © logical effort, in particular the ^one for erforderlionen Kraneinsats ₉ to redu for the installation of containment in Stahlzellenverbunäbauweise & iereiu

Explanation of the essence of the invention

The object of the invention is to provide a special assembly method for the assembly of containments in steel cell composite construction.

According to the invention, the object is achieved in that each steel cell segment of another to be produced ZylinäerrInges individually transported under the raised above a mounting plane consisting of a cylinder ring and the Gontainmentkuppel assembly, lifted and welded to the overlying cylinder ring and sold to a cylinder ring extended unit on the mounting plane Due to the low height of the mounting plane and the further lifting of the construction elements by means of lifting components, the lifting gear insert is reduced in terms of lifting height, insertion depth and carrying capacity.

The stationary height of the assembly level offers favorable conditions for the mechanization of the assembly process «

embodiment

The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawings show

Fig. 1s On the mounting plane remote Containmentkupp el including Konsolrdng

Fig. 2% Elevated containment dome including Eonsolring

The assembly of the uppermost cylinder ring 2 of the containment (console ring) takes place on the assembly level 1 by means of hoisting gear. In order to strike the lifting platform 4 on the outside of the containment, appropriate supporting claws are to be provided. B ¹ The white assembly is sometimes required by a hoist to set down the steel cells on the mounting frame 1. The steel cells are installed by means of fluid technology for installation in place of settling on a movable support and lifting usd by means of this movable support in the installed position according to Figure 2 "

! completion of the installation of the cylinder rack 5, the fully assembled part of the Gołtaina test is removed from the mounting plane and the lifting mechanism 4 on the last mounted cylinder ring 5 is struck «,

Naoh the renewed lifting of the extended around a cylinder ring assembly, the next ring can be mounted.

Claims (1)

Srfindungsanspruoh Method of assembling a containment in steel-and-steel composite construction, wherein the first assembly consisting of cylinder ring and dome is mounted on the assembly plane and lifted by means of lifting components, characterized in that each steel cell segment (6) of the next cylinder ring (5) to be manufactured is individually under transported over a mounting plane (1) elevated unit, lifted and versohweißt with the above »lying cylinder ring (2) and the order of a Zylin derring extended assembly on the mounting plane (1) abge-. puts