What issue might cause difficulties when operating an oil-fired plant?

Operating an oil-fired plant can be complex, and certain issues can significantly complicate operations. A plugged strainer and pump failures are particularly problematic because they directly affect the flow of fuel oil to the burners. When a strainer becomes clogged, it restricts the flow of oil, potentially leading to inadequate fuel supply for combustion. This can cause the burners to operate inefficiently or fail to ignite altogether, which not only impacts energy production but also increases safety hazards. Similarly, if the pump fails, there will be insufficient pressure or flow to properly deliver the oil needed for combustion, further exacerbating operational challenges.

In contrast, while high temperature of the oil, excessive pressure in the system, and excessive airflow are important considerations, they do not typically cause as immediate and direct operational failures as plugged strainers and pump issues. Properly managing flow through filtration and pump mechanics is crucial for the smooth operation of an oil-fired plant, making this option particularly significant.