Some Trends of Marine Engineering and Shipbuilding in Asia (reliability investigation works and their evaluation indices)
In Asia countries the productions of ship building and marine engines have been increasing, specially Japanese marine industries have worked hard after 1960s and Korean ones after 1980s. Recently the other countries, as Taiwan and China, have been working so that these hour Asian countries are occuping the high level of shared ratio of productions for gross tonnages and horse powers, which are 74 and 64[%] of the world ones ( $8.6\times10$ +6[GT], $8.6\times10$ +6[PS]) in 1994. Korean industries had the highest shared ratio of production of tanker vessel and 2 stroke diesel engine as 45[%]( $2.2\times10$ +6[GT]) and 37[%]( $1.0\times10$ +6[PS]) which were more than those of Japan as 34 and 16[%] in 1989 respectively. Some marine databases and their network links among Asian countries are proposed due to the posibility of collection and analyses with their own specifications by the marine industries and operators as well as Japanese ship reliability investigation works(SRIW) like SRIC in Japan. During 1966 and 1996 16 times of SRIW in Japan have been carried out by ship reliability investigation group(SRIG) in Japan. There have been collected and evaluated a great number of field data of failures and maintenances( $700\times10$ +3[occ], $1.6\times10$ +6[MH}) during running hours( $13.4\times10$ +6[Hrs]), from which many kinds of evaluation indices could be gotten as the three indices of occurring rate $\lambda$ (52.2[occ/1000Hrs]), average man-hour mh(2.29[MH/occ]) and manning index MI(119[MH/1000Hrs]). An estimation example having the three indices $\lambda$ , mh and MI were shown by the SRIC 1990 Data Base in Japan for the two kinds of fuel oil suppling subsystems which are dual fuel oil one(DFOS) and mono fuel oil one(MFOS). Three indices MI, and mh for DFOS and MFOS results in 7.16 and 5.20[MH/1000Hrs], 2.63 and 2.06[occ/1000 Hrs]. Therefore the more simple subsystem MFOS can save approximately 30[%] of maintenance load. Finlly an utilization methods are shown for the SRIC in Japan by means of computer system and worlwide internet links.
T. Hashimoto ,
ICMES 93 / v.Sept,pp.271-272,
T. Hashimoto ,
ICMES 77 / v.May,pp.15-27,
Marine Indusry Society in Japan ,
Annual Report / v.,pp.,
N. Kiriya ,
MESJ 93. Feb / v.28,pp.136-155,
New castle upon tyne ,
H. Tmanaki ,
ICMES 90 / v.Sept,pp.31-38,
- T. Hashimoto , ICMES 93 / v.Sept,pp.271-272,
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