Construction method for shielding cooling system and steel lining wall of high temperature gas cooled reactor

Abstract

The invention relates to a construction method for a shielding cooling system and a steel lining wall of a high temperature gas cooled reactor, which belongs to the technical field of reactor structures. The method includes: arranging a steel lining according to design requirements and welding cooling water pipes to the inner surfaces of the steel lining to form a combined structure module, hoisting the module to the position of a primary loop cabin of the high temperature gas cooled reactor, sequentially binding inner main reinforcement bars, auxiliary reinforcement bars and outer main reinforcement bars, erecting a constructional outer mould plate, concreting between the steel lining and the constructional outer mould plate to form a lower-layer combined structural wall module, hoistingan upper-layer module on the lower-layer combined structural wall module, and cycling so to form the wall of the primary loop cabin of the high temperature gas cooled reactor. Using the construction method can shorten time of constructional critical paths, reduce cross workload on a construction site, relieve work intensity on the construction site and guarantee accurate execution of constructionschedule while improve construction quality and shorten construction period.

Description

technical field [0001] The invention relates to a high-temperature gas-cooled nuclear reactor shielding cooling system and a construction method for a steel-lined wall, belonging to the technical field of nuclear reactor structures. Background technique [0002] The high-temperature air-cooled nuclear reactor primary circuit compartment is a low-pressure ventilated containment containing the three main equipment of the reactor primary circuit system (reactor pressure vessel, steam generator shell and hot gas conduit), and is arranged in the nuclear island reactor building. The shielded cooling system of the reactor is composed of a large number of scattered cooling water pipes. These water pipes are arranged inside the wall of the primary circuit cabin, and their installation is usually located on the critical path of the entire project construction. The construction progress of the primary circuit cabin directly affects the construction of the project. cycle. The tradition...

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Problems solved by technology

[0007] The traditional construction method makes the construction site of the nuclear power plant a lot of work, there are many cross-operations between civil engineering and installation, the site work space is narrow and most of them are high-altitude operations. It will bring a huge amount of high-altitude operations, and the civil installation work of the primary circuit cabin will take a long time on the critical path, and its economy, safety and quality assurance requirements will be in an unfavorable competitive position

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