Shipbuilding

 

Nowadays dimensional control is one of the most important aspects of the production process in shipbuilding and ship repair. The variety of ship control operations could be reduced to three main areas:

  • development and support of technologies for geometry control
  • metrology check of the design and process documentation
  • implementation of high precision and technically sophisticated geometry control operations

    • Specialists of our company handle all three aspects ensuring high precision and efficient dimensional control. We offer you:

  • continuous technical support during the entire cycle of shipbuilding / ship repair or repair of the offshore premises
  • the latest measuring instruments - measuring systems based on automated electronic stations
  • measuring techniques which allow to comply with technical requirements with minimum costs for the Customer

    • High professional level and extensive experience accumulated during years of work in science and industry enables the Bum Techno engineers to implement projects of any degree of complexity in ship dimension control.

     

    Equipment

    We work with industrial measuring systems AXYZ STM/MTM (by Leica, Switzerland), which include high precision electronic tacheometers TDM 5005 / TDA 5005 and a package of dedicated software.

    This optoelectronic equipment is considered to be the most advanced equipment used in applied geodesy. It guarantees:

    1. high precision: large-sized ship structures are measured with the accuracy of tenth and hundredth of millimetre
    2. availability: we can determine shape and position of ship structures even if it is on the inclined shipways or afloat
    3. prompt measurement

    Software modules enable:

    • calculate deviations in shape of the measured structure from standard geometric figures
    • compare measurement results with parameters of the computer model created in a CAD system
    • control large-sized objects of complex geometric configuration

    Dimensional Control Technologies

    Measuring technique developed for each specific project provides

    • required measurement accuracy
    • obtaining specified parameters with minimum adjustments and remodelling
    • maximum efficiency of dimensional control through the entire operation cycle

    We offer comprehensive approach to metrological support of the project, involving

    1. development of the project measuring procedure
    2. preparation of the work process documentation
    3. consultations and technical support till successful completion of the project

    Scope of work:

    • process and dimensional analysis of ship construction
    • development of the measuring procedure, processing algorithms and software
    • development of programs for measuring procedure qualification
    • metrological study of design and process documentation

    Results of our work:

    Project procedure

    - complete description of the dimensional control system

    - compliance with the ISO 9000

    -quality preproduction for the project
    Work process documentation package

    - includes process instructions, job cards for ship equipping, programmes of metrological certification

    - agreed with engineering team of the plant

    - provides for immediate manufacturing/repair of hull structures, mechanisms and other systems in local manufacturing facilities
    Technological support of the documentation

    - consulting

    - solution of operating matters

     

     

    Marine testing operations

    Hull section and block sizing to the "net" dimension

    Precise sizing of blocks and sections right on the manufacturing site without "check" assembly is the most efficient way to reduce the amount of adjustment works.

    Contactless coordinate methods with the use of optoelectronic systems offer significant advantages:

    • possible preliminary remote drawing adjustment of the structures
    • in any space attitude (including location on inclined shipways)
    • located at a distance (for example, in different manufacturing workshops)
    • measurements of such structures are done in one and the same coordinate system

    Preliminary evaluation of possible discrepancies between structures being integrated allows you to gain extra time for technical solutions of the integration process.

    Propeller geometry control

    Modern industrial measuring systems have contributed to the optimization of propeller geometry control. With coordinate system of Leica AXYZ type we can check geometry:

  • contact-free
  • without preliminary marking
  • right in the dock
  • without disassemling propeller from the ship
  • even without access to the targets measured

     

    Measurement results can be used for:

    • propeller survey
    • independent quality control of NC machining of propeller blades
    • blade finishing
    • propeller repair


    Geometry control of assembly process

    Coordinate systems of Leica Axyz type enable us to handle a wide range of tasks related to shipbuilding / repair. Due to high measuring accuracy, speed and software flexibility, we can check large-sized objects of complex geometrical form as well as propose required shifts of bases or entire objects during installation and assembly..

     

    Typical applications:

    • shape control of complex large-sized ship structures (including ship aerials in navigation and underwater sound systems)
    • shipways laying-off, marking of base and control lines inside and outside the ship (during installation and check of control platforms)
    • ship geometry monitoring during assembly and installation
    • shape and location control of mechanisms' foundations
    • location control of hard-to-reach and "invisible" points
    • points laying with a laser probe

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