Method for connecting and controlling pipelines of boron recovery system during overhaul

A recovery system and pipeline connection technology, applied in boron oxide compounds, auxiliary equipment of nuclear power plants, reduction of greenhouse gases, etc., can solve the problems of wasting processing time, increasing the workload of recirculating evaporators, increasing operating costs, etc., and reducing operating costs. , the effect of saving processing time and reducing workload

Inactive Publication Date: 2009-09-02
CHINA GENERAL NUCLEAR POWER CORP +1
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Problems solved by technology

[0005] Therefore, during the overhaul period, if the reactor coolant in the intermediate storage tank is subjected to water / boric acid separation through the recirculation evaporator, the workload of the recirculation evaporator in the boron recovery system will be increased, and the processing time will be wasted and increased operating costs

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  • Method for connecting and controlling pipelines of boron recovery system during overhaul

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[0013] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] see figure 1 , the embodiment of the present invention provides a boron recovery system pipeline connection method during overhaul, the boron recovery system 1 includes an intermediate temporary storage 2, the intermediate temporary storage 2 has pre-treated reactor coolant, the intermediate temporary storage The downstream of 2 is provided with a refueling water tank 3, and the refueling water tank 3 is connected with the intermediate temporary storage 2.

[0015] Specifically, the reactor coolant in the above-mentioned intermediate storage 2 has been pre-...

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Abstract

The invention provides a method for connecting and controlling pipelines of boron recovery system during overhaul. The boron recovery system comprises an intermediate register, wherein pretreated reactor coolant is arranged in the intermediate register; the lower reach of the intermediate register is provided with a material-change water tank; and the material-change water tank is connected with the intermediate register. During overhaul, the characteristic that the reactor coolant is low in radioactivity level after pretreatment is fully utilized; the intermediate register is directly connected with the material-change water tank; and by controlling a valve switch, the reactor coolant can be directly sent into the material-change water tank to be reused without being decomposed into boric acid and stack-level make-up water through the treatment of a circulation evaporator. Therefore, the technical proposal has the advantages of reducing the workload of a recycling evaporator in the boron recovery system, saving treatment time and reducing operation cost.

Description

technical field [0001] The invention belongs to a boron recovery system of a nuclear power plant, and in particular relates to a pipeline connection method and a pipeline control method of the boron recovery system during overhaul. Background technique [0002] The boron recovery system (TEP) of nuclear power plants is an important nuclear auxiliary system related to nuclear safety. It is also a system with many states and complex relationship control in nuclear power plants. Dehydrogenation, deoxygenation and boric acid concentration treatment are carried out with hydrogen-containing wastewater, and the treated dehydrogenation, deoxygenated water and boric acid are recovered. [0003] After the boron recovery system collects the hydrogen-containing reactor coolant, it will first purify the collected hydrogen-containing reactor coolant (i.e. desalination, filtration and degassing treatment), and the reactor coolant will enter the intermediate temporary storage after degassin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21D1/02C01B35/10
CPCY02E30/40Y02E30/00
Inventor 张文利
Owner CHINA GENERAL NUCLEAR POWER CORP
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