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本文介绍了位于法国纪龙德河口右岸上的Blayais核电站的冷却水排放工程的结构,这座核电站设有4台900MW(90万瓩)的机组。这种冷却水排放工程的结构,主要是在模型上进行研究的,其目的是为了确保所有可能出现的最大容量的排出温升(排出水的温度与河流自然水温度的差值)的初始稀释,同时还要求对河口水流及泥沙沉积的影响,限制在最小程度。根据可以获得较为良好的稀释的常规标准出发(与周围水流相垂直的高速度排放,排放流量的分流,不太邻近的周围的水环境),由于河口特有的限制条件(航道的存在,沙质和淤泥质河床的存在,低潮时表现出的小水深等),使得这些排放工程的结构形式大大不同于位于海岸的Paluel,Penly,Flamanville等发电站的排放工程的结构形式:为了减小排放工程的影响,必需限制排放口的水流速度,因而将排放流量分散为16个排放口,每个排放口的流量为10.5米~3/秒。
This article describes the structure of the cooling water discharge at Blayais Nuclear Power Station on the right bank of the mouth of France’s Gironde Estuary. This nuclear power plant has four 900 MW (900,000 瓩) units. The structure of this cooling water discharge project is mainly studied on a model basis in order to ensure an initial dilution of the discharge temperature (the difference between the temperature of the discharge water and the natural water temperature of the river) at all possible maximum capacities At the same time, it also requires that the impact on the water flow and sediment deposition in the estuary should be limited to a minimum. Starting from conventional standards that allow for better dilution (high velocity vertical to the surrounding water flow, diversion of discharge flow, less immediate surrounding water environment) due to the unique constraints of the estuary (the presence of waterways, the sandy And the presence of muddy riverbed, small water depth during low tide, etc.), the structure of these emission works is greatly different from the structure of the emission works of power plants located at the coasts of Paluel, Penly and Flamanville. In order to reduce the emission works , It is necessary to limit the water flow rate at the discharge port so that the discharge flow rate is divided into 16 discharge ports and each discharge port has a flow rate of 10.5 to 3 per second.