Assembling sub-assemblies and components to produce major marine structural assemblies
Overview
This standard identifies the competences you need to assemble major marine structural assemblies, in accordance with instructions and approved procedures. You will be required to interpret specifications and drawings correctly, to identify and select the correct sub-assemblies and components, to lay out and follow the build-strategy procedures, to bring together, prepare for joining and assemble in the right order sub-assemblies and components, in order to produce marine major marine structural assemblies. The major assemblies produced will cover such items as decks (plate or lattice), hull unit structures, shell/cover units, tube/pipe trusses, tanks and containers, bulkheads and firewalls, support structures, platforms and seating. You will be required lay out and secure the various component parts of the structure, using mechanical fastenings and temporary tack welding in the correct order and to ensure that the structures are assembled in a manner that is fit for purpose.
Your responsibilities will require you to comply with organisational policy and procedures for the marine major structural assembly activities to be undertaken and to report any problems with the activities, tools, equipment or materials that you cannot personally resolve, or are outside your permitted authority, to the relevant people. You will be expected to work to instructions, with a minimum of supervision, taking personal responsibility for your own actions and for the quality and accuracy of the work that you carry out.
Your underpinning knowledge will be sufficient to provide a good understanding of your work and will provide an informed approach to applying marine major structural assembly fabrication techniques and fixing procedures. You will have an understanding of the assembly techniques used, the requirements of the manufacturing and assembling procedures and their application. You will know about the methods of assembly and the role of the sub-assemblies and components, in adequate depth to provide a sound basis for carrying out the activities, correcting faults and ensuring that the major structural assemblies are produced to the required specification.
You will understand the safety precautions required when lifting and handling marine sub-assemblies and components and when using the associated tools and equipment. You will be required to demonstrate safe working practices throughout and will understand the responsibility you owe to yourself and others in the workplace.
Performance criteria
You must be able to:
- work safely at all times, complying with health and safety and other relevant regulations, directives and guidelines
- follow the relevant instructions, assembly drawings and any other specifications
- ensure that the specified components are available and that they are in a usable condition
assemble the components in their correct positions using appropriate methods and techniques
secure the components using the specified connectors and securing devices
- check the completed assembly to ensure that all operations have been completed and the finished assembly meets the required specification
- deal promptly and effectively with problems within your control and report those that cannot be solved
- complete relevant documentation in line with organisational procedures
Knowledge and Understanding
You need to know and understand:
- the specific safety precautions to be taken when working in a marine fabrication environment and when producing major marine structural assemblies (including general workshop and site safety, appropriate personal protective equipment, accident procedure; statutory requirements, risk assessment procedures and relevant requirements of HASAWA, COSHH and Work Equipment Regulations)
the personal protective clothing and equipment (PPE) to be worn when carrying out the major structural assembly activities (such as leather gloves, eye protection, safety helmets and ear protection)
safe working practices and procedures for producing marine major structural assemblies
- the correct methods of moving or lifting bulky and heavy components and fabrications
- the hazards associated with marine plate-work fabrication and structural assembly activities (such as using dangerous or badly maintained tools and equipment; lifting and handling long and heavy components; cuts, slips trips and falls) and how they can be minimised
- how to obtain the necessary drawings and build specifications
- how to extract information from engineering drawings and related build specifications (to include symbols and conventions to appropriate BS or ISO standards) in relation to work undertaken
- how to carry out currency/issue checks of the specifications you are working with
- how to interpret marking-out conventions (including cutting lines, centre lines)
- the various stages of assembly of the major marine structures and the terminology used
- the preparations to be carried out on the components, prior to assembling them
- the various methods of securing the assembled components (including threaded fasteners; tack welding methods and techniques; riveting)
- how to set up and align the various components and the tools and equipment to be used
- methods of temporarily holding the joints together to aid the assembly activities (such as jigs, clamps, rivet clamps, jacks and wedges)
- the use and care of tools and equipment and their control procedures
- the importance of using tools or equipment only for the purpose intended
- the care that is required when using the tools or equipment and the proper way of preserving tools or equipment between operations
- the problems that can occur when producing major marine structural assemblies and how these can be avoided
- inspection techniques that can be applied to check that shape (including straightness) and dimensional accuracy are to specification and within acceptable limits
- the procedure for the safe disposal of waste materials
- the extent of your own authority and whom you should report to if you have problems that you cannot resolve
Scope/range
Scope Performance
Carry out all of the following during the major marine structural assembly operations:
- correctly prepare and set up the components and faces to be joined
- use the correct datum faces
- correctly align the components and faces to be joined
- assemble the structural components and sub-assemblies in the correct order or manner
- produce major structural assemblies which meet the required specification
Produce three of the following major marine assemblies:
- decks (plate or lattice)
- hull unit structure sections
- shell and cover units
- tube/pipe trusses
- bulkheads and firewalls
- support structures
- tanks or containers
- seating/platforms
Use two of the following types of assemblies/components in the assemblies produced:
- minor assemblies
- sub-assemblies
- pre-fabricated components
Assemble the parts using two of the following methods:
- temporary tack welding
- use of fairing aids
- riveting
- mechanically fastened (nuts and bolts)
- use of jig/framework
Produce major marine structural assemblies which meet all of the following standards:
- all minor/sub-assemblies are correctly assembled and aligned in accordance with the specification
- overall dimensions are within specification tolerances
- major structural assemblies meet appropriate geometric tolerances (square, straight, angles, free from twists)
- where appropriate, pitches of erection holes meet specification requirements
- completed assemblies have secure and firm joints and are clean and free from burrs or flash
Scope Knowledge
Values
Behaviours
Behaviours:
You will be able to apply the appropriate behaviours required in the workplace to meet the job profile and overall company objectives, such as:
- strong work ethic
- positive attitude
- team player
- dependability
- responsibility
- honesty
- integrity
- motivation
- commitment