It flows down through an annulus just inside the shell downcomer where it mixes with water coming from the separator deck. Feedwater enters the side of the shell. Reactor coolant enters the steam generator at the inlet nozzle on the bottom left hand side of figure 2 and enters the tube bundle in the hot leg completing the u bend through the cold leg to the primary outlet.
Coverage spans the design manufacturing operation and maintenance fitness for service and long term operation of these key. Steam generators for nuclear power plants examines all phases of the lifecycle of nuclear steam generators nsgs components which are essential for the efficient and safe operation of light water reactors lwrs. The steam generators may also contain a steam separation region described below.
As the feedwater passes the tube it picks up heat and eventually gets converted to steam. The function of the steam generator is to transfer the heat from the reactor cooling system to the secondary side of the tubes which contain feedwater. A nuclear reactor formerly known as an atomic pile is a device used to initiate and control a self sustained nuclear chain reaction nuclear reactors are used at nuclear power plants for electricity generation and in nuclear marine propulsion heat from nuclear fission is passed to a working fluid water or gas which in turn runs through steam turbines.
Each steam generator vertical design can measure up to 70 feet 21m in height and weigh as much as 800 tons. In commercial power plants there are 2 to 6 steam generators per reactor. There are two designes for u tubes steam generators design with tube bundle arranged vertically and design with tube bundle arranged horizontally horizontal steam generators are used in the vver type reactors.
In typical pwr designs the primary coolant is high purity water kept under high pressure so it cannot boil. Steam generators are heat exchangers used to convert water into steam from heat produced in a nuclear reactor core they are used in pressurized water reactors pwr between the primary and secondary coolant loops.
