Abstract
It seems that the ship management companies and marine engineers have been less aware of the water quality control of marine auxiliary boilers in general. A few years after the completion of a ship, auxiliary boilers of 1MPa or less have been experiencing some troubles caused by corrosion. One of these is the pitting corrosion in the entrance pipe near the internal feed pipe. Another is caused by the boiler water leakage. This paper investigates, therefore, these trouble cases, and describes the cause and its measures first. Next, the current state of the support system related to water quality control is investigated, and the obligation of related posts necessary for safety management is made clear. Lastly, the paper proposes the standardization of the log sheet for boiler water analysis to prevent troubles due to the incompleteness of the support system.
