Producing platework assemblies
Overview
This standard identifies the competencies you need to produce heavy platework (3mm thick plate and above) assemblies, in accordance with instructions and approved procedures. You will be required to interpret specifications and drawings correctly, to bring together, prepare for joining and assemble, in the right order, platework components and sections, in order to construct completed fabricated assemblies or sub-assemblies, such as square and rectangular plate structures, covers and side plates, tanks, pressure vessels, cylindrical sections, conical sections, reduction pieces, simple and complex boiler seatings. You will be required lay out and secure the various component parts of the structure, using mechanical fastenings, temporary tack welding, flanged and mechanically fastened or adhesive bonding techniques, in the correct order and ensuring they are assembled in a manner that is fit for purpose.
Your responsibilities will require you to comply with organisational policy and procedures for the platework fabrication activities to be undertaken, and to report any problems with the activities, tools and 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 platework fabrication techniques and their assembly 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 assembling the components of the required strength and that are fit for purpose, in adequate depth to provide a sound basis for carrying out the activities, correcting faults and ensuring the work output is produced to the required specification.
You will understand the safety precautions required when working with heavy platework components and their 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
- use the appropriate methods and techniques to assemble the components in their correct positions
- secure the components using the specified connectors and securing devices
- produce final platework assemblies
- 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
Knowledge and Understanding
You need to know and understand:
- the specific safety precautions to be taken when working in a fabrication environment and when producing platework assemblies (general workshop and site safety, appropriate personal protective equipment (PPE), accident procedure; statutory requirements, risk assessment procedures and relevant requirements of HASAWA, COSHH and Work Equipment Regulations; safe disposal of waste materials)
- the personal protective clothing and equipment to be worn when carrying out the fabrication activities (such as leather gloves, eye protection, safety helmets, ear protection)
- safe working practices and procedures for producing platework assemblies
- the correct methods of moving or lifting bulky and heavy fabrications
- the hazards associated with platework fabrication and assembly work (such 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 joining specifications
- how to use and extract information from engineering drawings and related specifications (to include symbols and conventions to appropriate British, European or relevant International standards in relation to work undertaken)
- how to interpret marking out conventions (such as cutting lines; centre lines)
- the preparations to be carried out on the components prior to assembling them
- the various methods of securing the assembled components (nuts and bolts; tack welding methods and techniques; hot and cold riveting; adhesive bonding of components)
- 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 (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; the proper way of preserving tools or equipment between operations
- the problems that can occur when producing platework assemblies, and how these can be avoided
- inspection techniques that can be applied to check that shape (including straightness) and dimensional accuracy is to specification and within acceptable limits
- the extent of your own authority and whom you should report to if you have problems that you cannot resolve
- reporting lines and procedures, line supervision and technical experts
Scope/range
Scope Performance
Carry out all of the following during the platework assembly operations:
- correctly prepare and set up the components and faces to be joined
- use the correct datum faces
- use the specified or appropriate fixing method
- correctly align the components and faces to be joined
- assemble/fabricate the platework components in the correct order or manner as per the build sequence
- produce an assembly which meets the required specification
Produce four of the following platework assemblies:
- frames
- reduction pieces
- tanks
- segmented bends
- covers and side plates
- steel and composite material assemblies
- square, rectangular and box sections
- simple or complicated seatings (tank or boiler seats)
- cylindrical
- conical
Use four of the following types of components in the assemblies produced:
- plates or covers
- flanges
- pre-fabricated square/rectangular components
- pipes
- pre-fabricated cylindrical/conical components
- rolled section components (angle, channel or tee section)
- brackets
- other specific components
Assemble platework components, using two of the following methods:
- temporary tack welding
- flanged and mechanically fastened (nuts and bolts)
- clamped or jigged
- adhesive bonding
- riveting (hot or cold)
- other specific method
Produce platework assemblies which meet all of the following quality and accuracy standards:
- all components are correctly assembled and aligned in accordance with the specification
- overall dimensions are within specification tolerances
- 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
Additional Information
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