Steam carryover occurs when minerals from boiler water come out with steam into boiler parts such as superheater, reheater, turbine, and the others. Contaminated steam will make these boiler parts damage because solid particle in the steam will hit superheater tubes or turbine blades so produce momentum energy when hit these particles.
Steam carryover or contaminated steam can be caused by some parameters as follow:
- Sudden load changes
- Operation boiler is not controlled well
- Steam separator in steam drum is not working well
- Water treatment is not performed perfectly or there is leakage of impurities in feedwater system