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  • Users: ken777
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  1. ken777

    Fail-safe VFD drive in hoist application (Power black-out)

    Hi, I'm a mechanical guy but would appreciate some basic explanation on how to achieve what our team needs to design so I can follow up with a design consultant / vendor who will manage the VFD part of the deal. In a crane hoist application with electric motors driving the hoist drum via VFD...
  2. ken777

    API 2C crane speed

    Hi, What would be an acceptable speed for main winch hoist, boom luffing winch and slewing? I'm reviewing a proposal for a 250T@15m lattice boom crane for offshore, bottom supported application. Thanks.
  3. ken777

    Submersible Barge Ballasting

    Hi, I moved in from Offshore Oil & Gas industry and am new to the marine industry. Please assist to point me in the right direction as I am preparing an operation manual for a submersible barge to be used for launching vessels (the barger as well as the vesses to be launched are being...
  4. ken777

    HP sea water jetting pump

    Hi, I need to install a sea water jetting pump for a vessel; op. press 80 bar with flow rate 50 m3/hr. Currently considering piston / plunger type but vendors are unable to quote. Any suitable alternative types? Any recommendd vendors? Thanks.
  5. ken777

    Machine shop for small shipyard

    Hi, I'm required to set up a machine shop for a small shipyard we are developing. Main function is building new ships apprx. 4000T. Any suggestions on the type of equipment to be installed in the machine shop? Floor area is 25m X 45m (13000 sq. ft). Thanks.

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