Actually, ship-yards carry out the piping outfitting and piping design in engine room according to the practice of each.
Therefore, we twice used the questionnaries with thireteen ship-yards about the use practice of piping connections and the practice of piping outfitting.
As a result, we have completed “Guide to Machinery Piping Outfitting” in accordance with the questionnaires.

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Regarding the outfitting design of Gen Engines, we are usually obliged to make a great deal of efforts when it comes to design, as there are so many factors in it, such as manufacturer, number, fuel oil, operating condition, owner's requirement, builder's idea and so on. Consequently even in case of same type vessel design, it would force designers to make extra design work, if some one factor is changed. This technical document was prepared expecting that it would be a little help for making kind of standard for it and improve such circumstances as much as possible, of course it is impossible to cover everything, by summarizing above-metioned factors including many things based on the result of questionnaires (For vessels built in 1994 and 1995) by THE MARINE ENGINEERING SOCIETY IN JAPAN.

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Nowadays, many shipyards have applied resin chock instead of steel one when installing main machinery as a countermeasure of employees of advanced age and decrease of man power. But any trouble with respect to the resin chock when installing main machinery such as diesel engines and diesel generators affects the performance of the machinery.
We, therefore, prepared a design guidance of installation of diesel engines, diesel generators and auxiliary machinery with resin chock, based on the questionnaire to the shipyards who participate in the machinery engineering system committee No.3 of the Marine Engineering Society.

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It is purpose of this paper to understand from the two dimensional visualization by the soot volume fraction (maps), on account of increase the accuracy of the time-space resolved measurements by YAG laser sheet method. The YAG laser sheet (50mm × 0.5mm) of wavelength 532 nm (22mJ/pulse) is used as the light source for Mie's theory. The visualization of soot particles is realized by an ICCD camera via a high-speed gated image intensifier. A framework of this paper is held from examination of the apparatus for its validity, and the application in the case of actual flame by YAG laser sheet method. The measured results lead to the following conclusions.
(1) For estimate the soot volume fraction (fs: cm³/cm³) from the intensity of the light scattered [counts) scatt.] by soot particles. Preliminary experiments using steady flame are carried out for the verification of the experimental equation.
fs=1.00×10^-10+4.53×10^-9×counts) scatt.
(2) Soot concentration increases rapidly along flame sheet where flame-eddy are formed with accelerated speed. But, the decay of soot concentration is more rapid in the eddy-breakdown region near of the fuel-lean zone.
(3) Soot burnout at inner part of flame front become higher in the higher gradient of diffusion flame front.

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We investigated the particle distribution of the solid being insoluble in Xylene solution in residual fuel oil with the number and total volume of solid state particles for the past 7 years.
As the result, in case of investigation with total volume, we became known that there were recognized 2 heaps, 5-15μm (peak 10μm) and about 35-40μm in particle size.
In order to remove the solid state particles from residual fuel oil, it is necessary to put purifier to practical use and utilization of automatic backflush filter of about 35μm mesh size and still more cartridge deep type filter of about 5μm mesh size.
As on account of contain partucle total volum of 5-15μm mesh size is plentiful in residual fuel oil, we think very important that the deep type filter is equiped with larger insoluble resistance collect capacity.

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It is desirable to make low noise motors from the viewpoints of environment. This paper describes an effective way of reducing noise for a induction motor in the duct. The motor noise in the duct is using by the active noise control. The proposed system can be reduced 13dB for a induction motor noise.

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