Marking out for manufacture and assembly of marine wooden components
Overview
This standard identifies the competences you need to mark out materials for the manufacture and assembly of marine wooden components, in accordance with approved procedures. You will need to interpret the information contained in the drawings, instructions and specifications, in order to mark out the materials and components accurately and correctly. You will be expected to select the required wood, to identify any defects in the wood that would make it unfit for use and to use the appropriate marking out tools and equipment, based on the features to be marked out, the accuracy required and the information presented to you.
You will need to use these instruments to mark out datums, profiles, simple joints, hole positions, assembly positions and cutting lines which will be followed when producing the required components. Materials to be marked out will include softwoods, hardwoods and manufactured board, which may be in sheet form, stock sections, or part-manufactured components or sub-assemblies.
Your responsibilities will require you to comply with organisational policy and procedures for the marking out activities undertaken and to report any problems with the marking out activities, equipment or materials used that you cannot personally resolve, or are outside your permitted authority, to the relevant people. You will be expected to ensure that all tools, equipment and materials used in the marking out are correctly accounted for on completion of the activities and to complete all necessary job/task documentation accurately and legibly. 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 sound basis for your work and will provide an informed approach to applying marking out procedures for marine wooden components. You will have an understanding of the marking out procedures used and their application and will know about the marking out techniques, tools and equipment used, in adequate depth to provide a sound basis for carrying out the activities and ensuring that the marked out materials are to the required specification.
You will understand the safety precautions required when undertaking the marking out operations. You will be required to demonstrate safe working practices throughout and will understand the responsibility you owe to yourself and others in the workplace, both ashore and afloat.
Performance criteria
You must be able to:
- work safely at all times, complying with health and safety and other relevant regulations, directives and guidelines
- obtain and use the correct information for marking out
- obtain the appropriate marking out equipment and check that it is in a usable condition
- prepare suitable datum's and marking out surfaces
- produce marked out components using appropriate methods
- check that the marking out complies with the specification
- deal promptly and effectively with problems within your control and report those that cannot be resolved
Knowledge and Understanding
You need to know and understand:
- the specific safety precautions to be taken when marking out wood and composite materials and with the tools and equipment that are used (including any specific statutory requirements, risk assessment procedures and relevant requirements of HASAWA, COSHH and Work Equipment Regulations)
- hazards associated with the marking out activities (such as marking out equipment used, lifting and handling sheet material, long lengths of materials, splinters) and how they can be minimised
- the process to be adopted to obtain the required drawings and job instructions
- how to interpret information from job instructions, engineering drawings and related specifications, in relation to work undertaken
- how to identify and select the materials that are to be used (to include colour, grain structure, size)
- the common defects that occur in the wood to be used
- the types of defects that would render the materials unfit for use
- the importance of colour matching and grain convention, when using wood and wood-based materials
- principles of marking out, and the type of equipment used
- the range of operations that the various marking out equipment is capable of performing
- how to prepare the materials in readiness for the marking out activities, in order to enhance clarity, accuracy and safety (such as visually checking for defects, preparing the materials, removing sharp corners and edges)
- use of marking out conventions when marking out the workpiece (including datums, centre lines, cutting guidelines, square and rectangular profiles, joints, circular and curved profiles, angles, holes which are linearly positioned, boxed and on pitch circles)
- how to select and establish suitable datums, the importance of ensuring that marking out is undertaken from the selected datums and the possible effects of working from different datums
- ways of laying out the marking out shapes or patterns so as to maximise the use of materials
- methods of marking out large or long shapes
- marking out and transferring information from templates
- setting and adjusting tools (such as squares, protractors, marking gauges)
- the importance of using tools only for the purpose intended, the care that is required when using the equipment and tools and the proper methods of preserving and storing tools and equipment between operations
- why tool/equipment control is critical and what to do if a tool or piece of equipment is unaccounted for on completion of the activities
the need for clear lines and dimensional accuracy in marking out to specification and drawing requirements
the problems that can occur in marking out marine components and how these can be avoided
- standards to be attained and company/customer quality control procedures
- the recording documentation to be completed for the marking out activities undertaken and where appropriate, the importance of marking and identifying specific pieces of work in relation to the documentation
- the extent of your own responsibility and whom you should report to if you have problems that you cannot resolve
Scope/range
Scope Performance
Obtain and use information for the marking out activities, to include two of the following:
- drawings
- specifications
- verbal instructions
- sketches
Select and mark out two types of wood (which conform to specification in respect of type and condition):
- hard wood
- soft wood
- manufactured board
Identify and isolate any materials that have defects, to include all of the following:
- structural
- dimensional
- cosmetic
- distortion
Use a range of marking out equipment, to include five of the following:
- pencil
- protractor
- marking knife
- sliding bevel
- rule or tape
- dividers, compass or trammels
- straight edge
- marking gauge
- square
- templates
- optical
Mark out material, to include five of the following features:
- datum and centre lines
- curved profiles
- square/rectangular profiles
- hole centring and outlining
- angles
- cutting detail
- circles
- assembly positions
- joints
Produce marked out components which meet all of the following requirements:
- dimensionally accurate (to drawing, specification or template)
- has clearly formed lines and profiles
- waste material is clearly identified
- uses recognised marking out conventions
- datum faces/points are clearly marked and identified
- meets company/customer standards and codes of practice
Scope Knowledge
Values
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