치환식 밸러스트수 처리장치용 전산프로그램의 개발

A development of calculation program for ballast water exchange system

In this paper, a tank pressure calculation program when exchanging ballast water is introduced. According to the requirements of "International Convention for the Control and Management of Ships’ Ballast Water and Sediments" (hereinafter refer to the "BWM Convention"), a ballast water management system should be fitted in all ships. Meanwhile, as an interim measures, the ballast water exchange method is allowed for the certain periods. To fulfill the requirements of the Convention, where ballast water is exchanged with a pumping-through method, there is a possibility to exceed the design pressure of ballast tank due to the back pressure occurred in the system. In order to avoid the possible structural damage of ballast tanks and to verify the size and number of air pipes, therefore, the calculation to confirm the structural safety of the system should be carried out.