The sludge deposition in steam generator of nuclear power plant is always an important cause leading to corrosion and damage of materials used in steam generator.Methods for reducing the sludge deposition

such as chemical control of water

conservation during reactor shutdown

injecting dispersant and application of magnetic filter etc.

has been presented respectively.The chemical control of water

as well as application of organic amine and magnetic filter all can effectively reduce the deposition of sludge entering into the steam generator

while using dispersant can make the sludges in the steam generator to be dispersively discharged

reducing their deposition.