Construction method for passive water tank of nuclear power plant

Abstract

The invention discloses a construction method for a passive water tank of a nuclear power plant. The construction method comprises the following steps that a steel structure supporting module, a bottom floor slab semi-steel plate concrete structure module, a stainless steel plate covered semi-steel plate concrete structure module, a barrel body steel plate concrete structure module and top floor slab semi-steel plate concrete structure modules required by the construction of the passive water tank are precast according to construction requirements and are transported to a containment shell construction site; the steel structure supporting module, the bottom floor slab semi-steel plate concrete structure module, the stainless steel plate covered semi-steel plate concrete structure module and the barrel body steel plate concrete structure module are sequentially hoisted, positioned, but jointed, welded and supported, and concrete is poured in time; after heat exchanger equipment is introduced, the top floor slab semi-steel plate concrete structure modules are hoisted in sequence, and upper concrete is poured to the semi-steel plate concrete structure module; the passive water tank bottom stainless steel covered surface is laid and welded; and the passive water tank and a heat exchanger are transferred.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and more specifically, the invention relates to a construction method of a passive water tank of a nuclear power plant. Background technique [0002] With the continuous development of nuclear power technology, adopting passive technology to improve the safety of nuclear power plants has become one of the notable features of the third generation nuclear power technology. The passive water tank, as the emergency response facility for the complete loss of water supply in the secondary circuit of the nuclear power plant, is an important measure to improve the safety of the nuclear power plant. The inner cavity of the water tank (except the top) is designed as a stainless steel cladding structure. [0003] In the traditional construction method of passive water tanks in nuclear power plants, when the reactor building shell is constructed to the bottom of the passive water tank, it is necessary...

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Problems solved by technology

[0004] Because the passive water tank is a cantilevered structure and the construction load is heavy, the construction of the passive water tank not only requires a large amount of construction and dismantling of the construction support system, high cost, and a large amount of high-altitude construction, but also the stainless steel cladding of the pool is faced with high difficulties in the construction of the traditional post-lamination method. and long-term problems

[0005] In view of the shortcomings of the traditional construction method of passive water tanks in nuclear power plants, such as difficult operations, high construction risks, and low work efficiency, it is necessary to provide an efficient and convenient construction method for passive water tanks in nuclear power plants

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