In a steam power plant which of the following component needs more maintenance?

In a steam power plant, a boiler needs more attention and maintenance. The thermal plant depends on steam. Production of steam will falls due to problems in the boiler tube. For this boiler needs maximum maintenance.

In a thermal power plant, a boiler collects steam and builds pressure before releasing it into a turbine to create mechanical energy. The turbine which is attached to the generator transforms mechanical energy into electrical energy.