Statistical Study on Reliability of Ship Equipment and Safety Management -Reliability Estimation for Failures on Main Engine System by Ship Reliability Database System-

Abstract

In Japan, The SRIC third generation database system has become a useful system which includes over 114000 field data about the failure of ship equipment passing the long time investigation. This database system has never been carried out in other countries. And the SRIC is a relational database system constructed using a number of data tables and having many useful functions. It has become clear that the average failure rate of the whole of ship equipment was 7.2 [case/1000hr.] and the work for the repair was 5.0 [man*hr.] through statistical analysis by the SRIC. And, it is noticed that the failure ratio of miscellaneous equipment is about 43 [%]. The average failure ratio is changing at the same level. However, the work for the repair has been increasing from the middle of the 1990s. The actual conditions for the reliability of the ship equipment gradually became clear in this study, but a long term approach of the raise in reliability is necessary in the present time and the future. This paper reports the latest results of statistical analysis and multivariate analysis of the main engine system by using the information of the SRIC. As a result of cluster analysis, the reliability of the main engine system and its characteristics became clear.