舶用機器の信頼性に関する統計的考察と安全管理

―電気電子系機器故障の特性と評価―

抄録

In Japan, the Committee for Ship Reliability Investigation had been constructing a database system (SRIC Database System in JAPAN) for the improvement in ship reliability. The present SRIC of third generation has just became a useful system included over 114000 field data about the failures and alarms of ship equipment pass the long time investigation from 1982. And, it is became clear that the average failure rate of the whole of ship equipment is 7.0 [Case/1000Hr.] and the average work for repair is 5.0 [Man^*Hr./Case] by SRIC. And it is noticed that the failure ratio of the miscellaneous equipment included the oil purifiers is about 43 [%] .
The average of the electric and electronic equipment failure ratio is about 28 [%] . The failure rate is changing with same level and the average failure rate of the electric and electronic equipment is about 2.1 [Case/1000Hr.] . However the average work for repair of the electronic equipment failure shows a tendency to a slight increase from the 90s. It is considered that there is an effect to introduce the new type equipment like a computer and the laborsaving on the ship.
SRIC plays a very important role both in the field of study and in the field of practical use. And the information on the ship reliability is needed hereafter. This paper reports the latest results of the statistical analysis and the multivariate analysis about the ship equipment failures by using SRIC database system.