Nuclear power station radioactive liquid effluent discharging and conveying method

Abstract

The invention discloses a nuclear power station radioactive liquid effluent discharging and conveying method. The method comprises the following steps that a non-radioactive liquid effluent discharging pipeline is laid; the radioactive liquid effluent discharge pipeline is laid in the non-radioactive effluent discharge pipeline, and the radioactive liquid effluent discharge pipeline is laid at the inner bottom of the non-radioactive liquid effluent discharge pipeline; when the non-radioactive liquid effluent discharge pipeline discharges, the radioactive liquid effluent discharge pipeline is ensured to be submerged and bear a certain external pressure, and the water head of the radioactive liquid effluent discharge pipeline at any point is lower than the water head of the non-radioactive liquid effluent discharge pipeline. Compared with the prior art, the radioactive liquid effluent discharge pipeline is laid in the non-radioactive liquid effluent discharge pipeline, the initial investment is effectively reduced, leakage of the radioactive liquid effluent pipeline can be converted into inward leakage of the non-radioactive liquid effluent from outward leakage of the radioactive liquid effluent, and therefore, the environmental risk is reduced.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and more specifically, the invention relates to a method for discharging and transporting radioactive liquid effluent of a nuclear power plant. Background technique [0002] At present, the seaside nuclear power plant sites in China are gradually decreasing, and there is a tendency to develop inland. Inland plant sites are often far away from the discharge water of radioactive liquid effluents. In the case of mainly using liquid discharge, how to improve the safety and economy of discharge is an important issue concerned by the industry. [0003] The method often used in the prior art is: Lay the radioactive liquid effluent in a special protective channel for protection, and there is a special leak detection well along the protective casing. If a leak occurs, the radioactive liquid effluent will enter the leak detection well and pass through Manually judge whether there is radioactive liqu...

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Problems solved by technology

[0004] However, the prior art has at least the following defects: the initial investment is relatively high; the damage of the external protective pipe trench cannot be monitored and repaired in time; Checking the water accumulation of the leak detection well or detecting the liquid level is easily disturbed by external conditions such as external rainwater and soil seepage

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