Burner cooling water cut off

How can one determine that there is no leak in the burner? Why has the burner cooling water been cut off?

The judgment is made through a comprehensive analysis of CO levels, DCS data, backend systems, and ESD information; by examining the dynamic changes in related parameters prior to the shutdown, it can be determined that the shutdown of the burner was not caused by a leak

There are a few points that need to be clarified: 1. What is the first accident alarm? Is it a crash due to low inbound traffic? Is it still caused by the flow difference? Is it still caused by temperature? 2. Regarding the shutdown caused by the burner cooling water as mentioned by the poster, burner cooling water systems usually come equipped with a self-start function and a primary power supply – why is there no response from the self-start function? 3. The judgment is made by considering the combined changes in parameters such as the inlet flow rate of the burner cooling water, the flow rate difference between the inlet and outlet, the outlet temperature, the pressure of the burner cooling water, and the online CO detection levels. The information provided by the original poster is insufficient, making it difficult to draw any conclusions ； 4. The online analysis of burner cooling water CO is prone to being affected by environmental factors; merely having an online CO alarm is not sufficient to determine whether there is a leak. If not only is there a CO alarm, but also the flow rate difference is high and the outlet temperature is high as well, then it is indeed possible that there is a leak. Additionally, there was once an instance in which the burner cooling water system stopped operating suddenly without any faults. The investigation revealed that the workers responsible for anti-corrosion and insulation work stepped on the sampling valve of the burner cooling water inlet flow meter in order to reach the pipes; to make it more comfortable for them to stand there, they rotated the valve 90 degrees. Hope this will be inspiring to the original poster

Everyone is getting a bit off-topic! My main question is whether it’s possible to resume supplying cooling water to the burner after it has stopped flowing. As for determining this, no one wants to face the consequences of turning the supply on and off again if there is a leak.

Under these circumstances, I think no one would want to take the risk of putting it back in use; it’s safer and more reliable to lower the pressure in the furnace, remove the burner, and then dry the furnace before adding materials again.

If it is indeed confirmed that there are no leaks, then material can be fed in, but in practice there is still a risk. The best approach in this case is to replace the burner and then proceed with feeding material again

The valve was opened and the material was fed in; thinking about it now, it’s scary – there was a water supply interruption of 10 minutes. . .

A water cut-off usually causes the coil to rupture, and an alarm is triggered by the pressure difference in the cooling water. If the pressure difference is normal, be bolder and you can try injecting again

This situation depends on the duration: 1. If there is a so-called false water cut-off with everything else functioning normally, it can be immediately resolved by turning things back on to restore normal operation if the duration is short. 2. If the time is long, more water stored inside will vaporize due to heating, and the high pressure generated will cause the safety valve to open and release pressure; as a result, the temperature at the end of the burner and in some sections of the coil may be very high. It is relatively dangerous to force it into use at this time; it is not recommended to turn it on again.