Which of the following is a consequence of foul condensate?

Foul condensate refers to condensate that has accumulated contaminants such as oils, chemical residues, or other impurities, often as a result of improper maintenance or system design. This type of condensate can lead to significant issues within a boiler system. The primary consequence of foul condensate is the potential for damage to the boiler and piping.

When contaminants are present in the condensate, they can cause corrosion, scaling, and deposits within the boiler system. These issues can severely impair heat transfer capabilities, leading to overheating of components and even eventual failure of the boiler. Additionally, foul condensate can lead to blockages in piping, which not only reduces efficiency but also increases the risk of leaks or bursting due to excessive pressure build-up.

Thus, the correct answer highlights a critical aspect of boiler maintenance: maintaining clean and properly treated feedwater and condensate is vital for the longevity and safe operation of the boiler system.