蒸気タービンプラントの保全データの解析

-第1報

抄録

Concerning an LNGC Propulsion system: a turbine engine system (the turbine, hereafter) has been selected because it can the more easily treat boil-off Gas from a cargo tank, and would have greater reliability when compared to a diesel engine (the diesel, hereafter) . However, on the other hand, the turbine does have disadvantages, such as lower thermal efficiency and a more complicated operation needing skilled engineers.
Recently, what with the rising price of bunkers and greater difficulty in recruiting engineers, some ships have employed the diesel for LNG transportation service. That is the background.
Turbine makers have been developing new turbines aimed at improving thermal efficiency. I think that the next range of turbines should be developed with consideration paid to the present, practical operational situation. This paper will analyze the reliability and maintainability of the turbine by using the real maintenance data of an LNGC. Information towards improvement will be offered.