JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN
Online ISSN : 1884-4758
Print ISSN : 0388-3051
ISSN-L : 0388-3051
Volume 26 , Issue 3
Showing 1-5 articles out of 5 articles from the selected issue
  • [in Japanese]
    1991 Volume 26 Issue 3 Pages 905-912
    Published: 1991
    Released: May 31, 2010
    JOURNALS FREE ACCESS
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  • [in Japanese]
    1991 Volume 26 Issue 3 Pages 913-921
    Published: 1991
    Released: May 31, 2010
    JOURNALS FREE ACCESS
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  • Koichi Ueda
    1991 Volume 26 Issue 3 Pages 922-928
    Published: 1991
    Released: May 31, 2010
    JOURNALS FREE ACCESS
    On a chemichal tanker, tanks are washed by means of a rotary water jet. But as the experiments about the washing by a water jet were seldom, it is investigated how adherings are washed by the water jet spreading radially on a flat plate to which glycerin is adhering.
    At first, the flow of the water jet on the plate are examined by measuring of the depth of the flow on the vertical plate.
    Secondly, the photographs of the washing state are taken by using a moter driving camera. And the relations between the removal rate of the adherings and Reynolds numbers are obtained by analysing the photographs.
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  • Hachiro Kido
    1991 Volume 26 Issue 3 Pages 929-941
    Published: 1991
    Released: May 31, 2010
    JOURNALS FREE ACCESS
    Ship Propulsion plant based on main diesel engine has been accomplished remarkable prosperity for the past 25 years.
    Especially progress of technical shipboard automation system had a favorable great influence upon ship's MO (machinery watch free at night) and modernized ship system.
    And also, engine plant and automation system should not be acccomplished independent prosperity, mutual relation are necessary more closely prosperity. This paper reports the investigated reliability of engine plants, and especially the investigated effect of main diesel engine for alarm and failure on automation system.
    In addition, the system construction for requested function in future is considered from sight of plant automation system at present.
    The data have been made on each item established in shipping company, and basic data have been collected from 41 MO vessels.
    The specific contents of analysis will be shown below.
    1. Situation of failures and alarms data
    Period March 1st '82- March 31st '87
    No. of Vessels MO Diesel Ship 41
    Total operating hour 1168213.4 Hrs
    Total propelling hour 880791.4 Hrs
    Total port rest hour 287422.0 Hrs
    Total alarms 15378 cases
    Mean Time Between Alarm (MTBA) & M * H 76.0 Hr/case 1.9 M * H/case
    MTBA of automatic equipment & M * H 2175.4 Hr/case 1.94 M * H/case
    Total failures 13582 cases
    Mean Time Between Failure (MTBF) & M * H 86.0 Hr/case 4.8 M * H/case
    MTBF of automatic equipmen & M * H 361.6 Hr/case 2.55 M * H/case
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  • [in Japanese]
    1991 Volume 26 Issue 3 Pages 942-945
    Published: 1991
    Released: May 31, 2010
    JOURNALS FREE ACCESS
    In recent years, energency generators are provided in almost all ocean going ships under SOLAS'81.
    This paper gives a guide for planning of energency genevator diesel engines and their auxiliary machinery in ocean going ships based on our research by questionnaire to ship owners, ship builders and engine makers and nvestigation of actual provision of energency generators.
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