![]() ![]() Trip the unit, purge thoroughly, then correct the problem. Fuel-rich mixtures can occur any time that insufficient air is supplied for the amount of fuel being burned. When this unburned fuel ignites, it can do so in a very rapid or explosive manner. The most common causes of a fuel explosion are:įuel-rich mixtures - The danger of a fuel-rich mixture is that high concentrations of unburned fuel can build up. The photo above shows the complete devastation of a utility boiler.Ĭonditions have to be just right for an explosion to occur and when a boiler is properly operated, it is not possible for such an event to take place. One of the most dangerous situations in the operation of a boiler is that of a fuel explosion in the furnace. The most common ways to "destroy a boiler" include the following: Failure to follow a few well-established practices can, and likely will, result in a catastrophe. Safe operation of these units requires careful attention to many factors. The operational reliability and availability of these boilers is often critical to the profitability of the facility. ![]() The design and construction of power and recovery boilers represent one of the largest capital expenditures in the industrial utilities arena. This article covers the four most common ways to "destroy a boiler," including fuel explosions, low-water conditions, poor water treatment, and improper warm-up. This article was originally published in the Winter 1999 National Board BULLETIN. Summary: The following article is a part of the National Board Technical Series. ![]()
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