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  1. ktm5

    system codes for vessel maintenance

    There are several formats depending on whether it is government designed, AMOS, marinized, shoreside designed, etc... In the early 1990’s I developed a system heirarchy for a fleet of tankers. It was based on the various systems aboard a large vessel and broken down into the different...
  2. ktm5

    Diesel Fuel transfer pumps aboard OSV's

    I am designing a 3 inch diesel fuel transfer system for a vessel and would like to know the type and models used aboard offshore supply vessels. I'm considering a 4x3 ANSI pump, but am curious about a PD pump style such as sliding vane or internal gear. Can anyone give me some additional...
  3. ktm5

    Diesel Fuel pumps aboard OSV's

    I am designing a 3 inch diesel fuel transfer system for a vessel and would like to know the type and models used aboard offshore supply vessels. I'm considering a 4x3 ANSI pump, but am curious about a PD pump style. Can anyone give me some additional guidance or help with specs? Thanks, ktm5
  4. ktm5

    OCIMS regulation

    geiter, The acronym is actually OCIMF which stands for Oil Companies International Marine Forum. It is a self governing group which develops standards for the marine industry and terminal facilities. They are not true regulations, but are broadly adhered-to guidelines used by the entire maritime...
  5. ktm5

    LPG Tankers

    Gashound, Witherby's publishes numerous books on LNG/LPG vessel operations by several authorities including SIGTTO, IACS, IMO and OCIMF.
  6. ktm5

    LPG Tankers

    Gashound, Witherby's publishes numerous books on LNG/LPG vessel operations by several authorities including SIGTTO, IACS, IMO and OCIMF.
  7. ktm5

    Increase Engine Life?

    In addition to Orenda 1168's suggestion: 1. Always operate the engine within the design parameters and under conditions for which it was intended. 2. Utilize the best lubricants available 3. Install a condition monitoring system 4. Go the extra mile for top notch maintenance
  8. ktm5

    Expansion Joints

    Senior Flexonics has a selection of hoses, including Wilcox composite hoses. The Wilcox Marine Master series is widely used for fuel oil transfers and lighterings. rgds, ktm5
  9. ktm5

    ABS Regs on Skin Valves

    ABS Rules for building and classing steel vessels under 90m, (Vessel Systems & Machinery) rules for shell valves should be found in Part 4, Section 2, sub-sections 19 through 25. Hope this helps ktm5
  10. ktm5

    More effective - bow thrusters or stern thrusters?

    In order to answer aircraftengr’s original three queries: “At which point is it necessary to use bow/stern thrusters? What are the criteria involved in making the decision? Have there been instances where only stern thrusters are used without the bow thrusters being present?” 1. I believe it...
  11. ktm5

    Cavitational pitting or galvanic action

    seakro, I am curious as to the layout of the physical system, ie.. are there elbows in the suction piping near the pump? Sometimes in a cramped engine room of a ship, space limitations create problems such as this. rgds, ktm5
  12. ktm5

    Fresh water consumption

    iceland1, oxilume may be correct for Navy application where there is tighter control over water consumption. My experience comes from deep sea applications aboard commercial tankers and bulk carriers. I believe an FPSO may have similar consumption with crew personal use, washdown and cleaning...
  13. ktm5

    shaft design vertical pump in CTW service

    phil29, I have been involved with vertical pumps which had long columns (50 feet+) and at least five sections of shafting. The manufacturer's concern is well founded, there are inherent dangers having a long solid shaft with a relatively small diameter. In these cases, quality and alignment of...
  14. ktm5

    Fresh water consumption

    iceland1, In my experience aboard tankers with a crew of 22 persons, 10-12 tons per day was average. This equates to about 145 gpd/person all-in. rgds, ktm5
  15. ktm5

    More effective - bow thrusters or stern thrusters?

    aircraftengr, As Fleet Manager for a previous employer, one of our vessels had a rotating nozzle in the stern (no rudder) and a bowthruster. The rotating nozzle acted as a sternthruster. I don't believe I've ever heard of any ship with sternthruster only installed, although this particular...
  16. ktm5

    Suction/discharge pressures

    MetalGuru, I agree with Montemayor regarding the McNally website. I have Bill McNally's Reference Manual for Centrifugal Pumps and Mechanical Seals on CD-ROM and it is a GREAT reference for pump users and specifiers. Almost anything you want to know about the subject is there. Regards, ktm5...
  17. ktm5

    Suction/discharge pressures

    MetalGuru, You mention that the height of the storage tank is 10m, but if the pump will be draining the tank fluid level..ie..fluid level not constant, this should be taken into account when specifying the service pump. I believe NPSH is one of the critical criteria for pump selection. Regards, ktm5

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