堆工原理 UNIT 5.ppt

sdasdasd  PRINCIPLE OF REACTOR ENGINEERING核 反 应 堆 工 程 原 理PU SHENGDI PU SHENGDI 2007.08 CHAPER 5   REACTOR CONTROL REACTOR CONTROL Purpose of Reactor Control Requirement Control methods Control Materials Control loops REACTOR CONTROL New Words and Phrases built-in (excess) reactivity （或剩余）反应性 initial cold condition 初始冷态 addition or removal of ...... 添加或减少 neutron absorber 中子吸收剂 insertion or withdrawal 插入或抽出 be regarded as competitors of ...... 看成是...的竞争者 the larger the proportion...,the smaller the fraction... 份额越多，...份额越少 vice versa 反之亦然 control element 控制元件 desired operating power level of the reactor 预定的反应堆运行功率水平 remain steady 保持恒定 control loop 控制环路 control mode: manual and automatic 控制模式：手动和自动 safety action 安全（保护）动作 operator action 操纵员动作（操作） direction flow of information, signal, or effect 信息、信号或作用传播的方向 exert appropriate action 做适当的操作 control block 控制块 predetermined value 预定值 servomechanism 伺服机构 silver-indium-cadmium 银－铟－镉 UNIT 5 REACTOR CONTROL Purpose of Reactor Control 1. In the normal operation of a reactor, the functions of the control system may be divided into three phases, i.e. startup, power operation, and shutdown. The basic purpose of the reactor control system is to provide a means for starting the reactor, i.e., bringing the power output up to the desired level, for m