Question

3) The pressurizer is an extremely important component found in the primary loop of a PWR. What is its role? Clearly explain the physical processes taking place in the pressurizer in order for it to play its role. b) Boron plays a central role in the reactivity control of PWR reactor, why? List and explain the various uses of boron in the short, intermediate and long term reactivity control processes

Answer 1

Pressurizer is an extremely 3 extremely important found important component in the primary loop. It's breimarey ozety is to maintain the appropriate pressuree in the reactor. It is separated and is partially filled with water, which is heated to the boiling point for the desired pressure required by the reactores. Normally, the pressurizer is maintained in a cerefain temperature range as a B6 of temperature may be 30°C because the reactor always maintain a certain amount of pressure. Yes, Boron plays a central role as it controls the reaction rate because Boron has a large thermal- - necefron cross section, which adds boric acid it needed and controls the reath of the nuclear reaction. The uses of Boreon an short, long and intermediate reactivity process is unique and large enough so that Borens is used shost reactivity process to use as a controller and as used in large amouat to control but in other two types it is used in less quantity and also maintains Borcic acid. ( Hence Ans )