Damage to the steam drum, the boiler, and the turbine can result from inaccurate drum level control.
If the drum level falls below set-point, there is a risk of the boiler running dry. If the level is higher than set-point, there is a risk that wet steam could carry over to the turbine, causing damage to the turbine blades.
Challenges with continual boiler water level can be overcome by utilizing Fisher control valves.
Fisher control valves can be implemented in LP, IP, or HP drum level control applications. R.E. Mason specializes in engineering a solution for each power plant design pressures/temperatures to ensure optimum performance. Many different trim combinations can be used to accommodate a wide range of conditions to achieve best possible drum level control.