Applicability of CDM to civil engineering projects case study on reduction of CO_2 emission by port extension

摘要

This paper investigates the applicability of CDM to civil engineering projects through a case study on the project to extend Port Samainda in Indonesia. The goal of this project is to improve the physical distribution system of the port so that it can accommodate increasing future demand for the cargo transportation. Based on the project report by JICA (2002), we first outline the predicted demand for the cargo transportation and select possible three options in which a cargo vessel with differentcapabilities and respective port facilities are assigned. For each option, CO_2 emissions from both cargo and dredging vessels are predicted and compared. It is found that the total CO_2 emission may be reduced significantly by introducing a large-draftvessel and deep navigation channels. This feature becomes more prominent if a traveling distance of the cargo vessels is long enough so that CO_2 emissions from cargo vessels dominates those of dredging vessels. This observation supports the applicability of CDM to civil engineering projects because reduction of the CO_2 emission is attained by improving distribution systems through civil engineering works such as extension of the port and the maintenance dredging. Finally, we discuss future problems tobe investigated for the practical application of CDM to a civil engineering project.