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Recent content by MASE81

  1. MASE81

    rapid corrosion of aluminum hull in fresh water

    Its an aluminum boat. It will rot unless you coat it. Haul your boat and paint your entire hull with a good Anticorrosive followed by an antifoulant below the waterline. Replace the anodes. I suspect the existing coating failure is likely due to pinholing from a poorly applied "one coat"...
  2. MASE81

    Pneumatic Purge of a Diesel fuel line?

    Purging of lines filled with hydrocarbons should always be done with an inert gas such as Nitrogen. Portable bottles or quads can be arranged if its only an occasional requirement. Based on your line size you can get a lot done by this method. Watch your pressure regulation, and have...
  3. MASE81

    MAIN & AUX Diesel Engine Exhuast Piping Corrosion/Fouling

    See my other post to you regarding the use of Corten steel. Rgds, RKK www.rkkimmons.com
  4. MASE81

    viscosity of water in HFO

    I know that mixing the two can cause problems. Warsila avoids this by using a method called Direct Water Injection, whereby water is injected at high pressure directly in to the cylinder. Rgds, RKK wwww.rkkimmons.com
  5. MASE81

    CP Design - Anode Temperature/Efficiency

    From the information given, the temperature requirement may be too conservative. You may want to revisit this spec requirement with the client. Particularly where size and weight of the anodes could impact the riser design itself. Are anodes supplemental to coatings? What is the frequency of...
  6. MASE81

    Black start Operation of GT Driven Compressor

    The mantra is ....Always contact the maker first. Different makers have different philosphies on cooling, lubrication, operations and control, and of course there is the application and configuration of the system. You may have some luck by contacting Rolls Royce at their site. They tend to...
  7. MASE81

    Engine Exhaust Piping

    I've had relatively good success with Corten steel in Tanker applications. As it is a more expensive material, good cost benefit is achieved by limiting its use to the area of highest corrosion, the 2-3 meters of exhaust piping above the funnel, that is constantly exposed to weather. This is...
  8. MASE81

    engine alignment

    Contact the engine maker. Typically they will have detailed written proceedures, specific to your engine model, foundation, and engine mount type. Proceedures will also be a function of the technology available locally, laser, bearing jacks, etc.. Some major makers, have dedicated services and...
  9. MASE81

    PROPELLER FOR SUEZMAX

    Though unusual, there could be a number of reasons. You will want to speak to the Classiifcation society on this issue if you have any questions as to suitability, or problems in service. Rgds, RKK www.rkkimmons.com
  10. MASE81

    Corrosion under paint blisters

    find the original coating inspector and send him a thank you note for a system thats lasted 20 years with minor damage.
  11. MASE81

    How to calculate the capacity of an oil tanker?

    For Tankers, you can also reference the standardized data that has been developed as a result of the OCIMF SIRE reporting system. http://www.ocimf.com/pages.cfm?action=sire_introduction2 1 m3 = 6.2898 Bbls
  12. MASE81

    Replacing Hull Plating - Insitu?

    How about a report back on what system you ended up using?
  13. MASE81

    Anyone here use synthetic oil in ship engines?

    May be worth investigating on medium and high speed diesels.For new engines you will want to verify if the synthetic lube is approved for use by the engine builder. A lot of the smaller synthetic lube suppliers are unwilling /unable to pay for bench testing of each engine type.
  14. MASE81

    Accomodation Air conditioning/ ventillation in Oil Tankers

    An alternative ..install gas detectors at your air intake if gas/vapors are detected your dampers shut and your hvac goes into recirc mode. Is the gas problem related to H2S? Is a refit/relocation/increased height of your existing IG mast risers needed?
  15. MASE81

    Use of inert gas to stop acid corrosion in cargo tank vapour space

    Navarch1 is exactly correct. Corrosion in the main deck in the cargo block is amplified by the corrosive by-products of combustion from the boiler flue gas. Additionally, when the gas is "scubbed" it gains some water content as well. Add a bit of heat and you have an excellent...

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