Problems with burner cooling water

The burner cooling water inlet and outlet shut-off valves will interlock to shut down the system; if it is confirmed that the issue is not related to the burner, then the feeding can be resumed directly!

Personally, I think it’s better to first supply cooling water to the burner; only after operation is functioning properly should the material be added. Safety comes first, with everything else being secondary

It is possible that the burner will be damaged once the cooling water for it is introduced

In my opinion, if a shutdown is caused by burner cooling water, the burner cooling water should not be supplied until it can be determined whether the burner cooling water coil is damaged. If the coil is damaged, introducing cooling water might affect the furnace bricks due to the sudden temperature change. It’s just my personal opinion; I’m not sure if it’s correct.

The key is not to use the burner cooling water; how can one determine whether there is a leak? Unless you pull out the burner to check it.

It seems this is the only option; I hope someone knowledgeable can help

I think since it was detected in time, the front and rear shut-off valves should be opened as soon as possible to restore water supply. At this point, the system is already stopped and in the pressure maintenance phase, with the pressure not much lower than when it was running; even if the coil does rupture, there’s no need to worry about water entering the vaporizer and damaging the furnace bricks (the pressure inside the furnace should still be higher than the pressure at the burner’s cooling water inlet). After restoring water flow, it is possible to determine whether the burner is damaged by checking whether the flow rate is normal and other indicators. Additionally, it should be noted that after the front and rear shut-off valves are closed, water may remain in the pipeline and coil behind the front shut-off valve as well as in the section ahead of the rear shut-off valve; it’s not necessarily the case that the burner will burn out due to lack of water once the shut-off valves are closed. Therefore, opening the valves and restoring water flow promptly should not pose any problems if enough time is available

Agree with what was said above! We once experienced an unplanned shutdown due to false readings from the flow meter for the burner cooling water; however, after analyzing the situation following the shutdown, we resumed water supply. In my opinion, it is possible to determine whether the burner is in good condition by considering its operating time and the CO levels detected after resuming water supply, which can help decide whether to restart its operation – after all, restarting it can save a lot of trouble!

Personally, I think the first step is to determine what is causing the vehicle to shut down – whether it’s due to a 3-out-of-2 interlock. If it is indeed an interlock issue of this type, it’s recommended to replace the burner If it’s not a choice of three against two, then consider the duration of time; if the time is short, it’s possible to open the inlet and outlet shut-off valves, allowing for continuous operation!

Regarding what was done at that time, one can start by opening the outlet valve of the burner return water tee, check whether the temperature of the return water is very high and whether steam is coming out. The control room should verify that there is no carbon monoxide in the burner separation tube; after that, the inlet water tee can be opened, while simultaneously measuring the temperature of the blue fluid to see if it is too high. If everything is normal, operation can proceed