Find out the causes of problems during the use of the boiler
Fire safety is always a top priority in any business or individual. Safe operation when using a boiler requires careful attention to many factors. Because the incidents caused can completely lead to disasters. What the consequences of the incident, we can’t predict. Causes of problems during operation and use:
Poor water treatment or contaminated feed water leads to corrosion, erosion and scale formation on boiler water surfaces.
Corrosion and abrading of the shell materials, the boiler shell, which are the pressure-sensitive parts of the boiler, leads to leaks, cracking and breakage of pressure-resistant parts.
Scale adheres to the wall of the boiler, the furnace body reduces heat transfer and leads to local superheating of the material at that location. Overheating makes the envelope material softer, causing deformation and reduced pressure resistance, resulting in furnace explosion.
The water level warning and pressure display devices are damaged, leading to incorrect signal transmission to the control system, possibly the system will continue to pump water into the boiler when the pressure in the furnace is too high. allowable level leading to boiler explosion.
When detecting the boiler water shortage, if the operator does not know how to handle it, continuing to pump water into the furnace will increase the pressure suddenly on the furnace body, three longs: this is the main cause of the phenomenon. Exploding boiler today.
The safety valve is not checked for regular operation, resulting in the failure to self-discharge steam when the pressure in the furnace exceeds the allowable level.
The safety valve self-deflates too many times, resulting in the spring no longer keeping its original qualities, later on, the operating error of the safety valve will deviate as much from the set parameters.
And the most important thing is that the operator, in order for the boiler system to operate safely, needs to be operated by an experienced person, who is skilled in handling situations that occur during boiler operation and is well trained. Formally created by organizations and agencies with proper functions and expertise in boiler operation and safety.
The mixture burns too much fuel: It is very dangerous in that the unburnt fuel can accumulate in high concentrations, when this unburnt fuel ignites, it will burn very quickly and easily explode. Excessive combustion of the mixture can occur when there is not enough air for combustion. Don’t add air to a combustion chamber that is blackened by smoke What to do is to stop the oven, clean it, then find a remedy. If you add air at this point, you can create an explosive mixture.
How to ensure the safe use of the boiler?
Water used for boilers must be chemically treated, must go through a water softening system to remove components that can cause scale in the boilers, manifolds, heat exchangers, steam pipes, etc. water pipe…
Boiler manufacturing materials must be used from heat-resistant steels, must be designed by people with expertise in boiler design, according to current Vietnamese or international standards. Boilers before leaving the factory must be ultrasonically welded, pressure tested and certified by licensed organizations.
Enterprises must have a specific monthly schedule on removing the furnace body flanges, manifolds and measures according to the instructions of the boiler supplier to clean the boiler, avoid the phenomenon of scale, dirt sticking a lot. clog heat exchanger tubes, or reduce heat exchange capacity causing localized temperature rise.
During the operation of the boiler, there must be an operation log to control the parameters of the boiler during the entire operation, in order to monitor and detect the differences during the operation to have the correct judgment. to limit the risk of boiler explosion.
Must regularly check sensors, equipment related to measuring pressure, temperature, water level. Make sure the control system is working properly. In addition to the sensors that take signals to the control cabinet, the boiler must be equipped with parameter display devices for the operator to monitor with the naked eye such as: clear glass to check the water level in the boiler, manometer to see the pressure, the thermometer to see the boiler temperature…
Safety valves must be installed and certified for safety by independent, licensed and functional boiler safety agencies. And must be periodically checked according to the recommendations of the testing units.
The safety valve should not be used once the steam has been released, when the boiler is overpressured and the safety valve jumps to release steam, reducing the pressure in the boiler, the business owner must then replace it. New safety valve. The water level control and warning system must be designed with many levels. Currently, Bach Khoa Boiler is designing a 3-level water-dehydration warning system for the boiler.
When detecting the phenomenon of water shortage in the boiler, the operator must absolutely not pump more water into the boiler, but must immediately notify the person with the highest responsibility in the shift for proper handling measures according to the instructions of the boiler operator. boiler supplier.
And finally, when enterprises employ workers to operate boilers, they must conduct formal training on boiler operation and troubleshooting skills during boiler operation.
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