Improvement of the drum water level protection logic

According to the requirement of “ 25 Important Anti-Accident Measures”, this paper analyzes general existing pro blems of drum water level protection logic. Meanwhile, it presents that the leak age of sampling pipe of differential pressure water level gauges and the poor qu ality of measure point should be taken into account in the design of the drum wa ter level protection logic.To increase correct ratio of water level protection, it suggests that temperature measure points be added in the sampling pipe.