The horizontal design has proven to be less susceptible to degradation than the vertical u tube design. The russian vver reactor designs use horizontal steam generators which have the tubes mounted horizontally. This design is a straight through tube with a vertical steam generator and vertical tubes.
Babcock wilcox uses the once through design. When nuclea energy was first introduced some mav have thought that our en ire accumulation of po ver. Meeting march 1970 introduction the art of power plant design is in a continuous state of development and the store of available knowledge for the desi n of the equipment involved i s being enlar edeach year and with every completed project.
1 nuclear heated steah generators c e a. Besides their basic design function of steam production their most important function from a safety point of view is being the barrier between the radioactive primary coolant and the nonradioactive fluids in the water steam cycle. Steam generators are one of the most important key components of pressurized water reactors.
Drexler in steam generators for nuclear power plants 2017. The global nuclear steam generator market is expected. 19 light water cooled graphite moderated reactors lgr and 50 pressurized heavy.
100 boiling water reactors bwr 38 of which are in the u s. During this time there were constructed and put in operation 298 pressurized water reactors pwr 81 of which are in the u s. The nsss nuclear steam supply system is a relatively recent development and has been in use for about thirty years.
Part of the heat transport system in either a pressurized water reactor pwr or a pressurized heavy water reactor which is a vertical heat exchanger using an inverted. For purposes of the ongoing discussion in this chapter a steam generator for a nuclear power plant will be summarized as. In the previous chapter the concept of a nuclear steam generator was introduced.
Each steam generator vertical design can measure up to 70 feet 21m in height and weigh as much as 800 tons.
Nuclear steam generator design. 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. In typical pwr designs the primary coolant is high purity water kept under high pressure so it cannot boil. 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 commercial power plants there are 2 to 6 steam generators per reactor.
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.
