【瑞士《原子能协会通报》1982年第56期报道】法美原子公司与法国原子能委员会合作研制出一种新型的核蒸汽生产系统,这种新系统使压水堆采用4环路运行。N~4新系统与迄今为止在法国130万千瓦核电站中采用的老类型相比较主要使堆芯、燃料、蒸汽发生器,一回路泵以及堆控制系统得到改进。根据目前所做的估计,N~4新系统可 [Switzerland “Atomic Energy Association,” reported in 1982, 56th] France and the United States Atomic Energy Corporation and the French Atomic Energy Commission developed a new type of nuclear steam production system, this new system makes the pressurized water reactor using 4 loop operation. Compared with the old type used in the 1.3 million kilowatt nuclear power plant in France, the new N~4 system has mainly improved the reactor core, fuel, steam generator, primary pump and stack control system. According to the current estimates, the N~4 new system can