During boiler startup, to prevent false trips of protections, which protections should be disabled? When to invest again?
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During boiler startup, to prevent false trips of protections, which protections should be disabled? When to invest again?
How can the protection of a boiler that is in operation be disabled?
What kind of protections are generally installed on the boilers in your facility? The protections installed in typical boilers include faults related to the fan, high and low water level alarms, protection against the loss of all fuel, flame detection systems, as well as high and low furnace pressure alarms, among others. During the boiler startup process, many conditions are not met, so interlocks are not activated temporarily; these conditions include high and low water level alarms, high and low furnace pressure alarms, protection against the loss of all fuel, flame detection systems, and so on.
Typical boilers are equipped with interlock protections such as high and low liquid level alarms, as well as high and low pressure alarms. These protections can be disabled during the initial startup phase, but they must be activated promptly once the boiler is operating stably.