Joining ferrous marine pipework by mechanical means
Overview
This standard identifies the competences you need to assemble and join ferrous marine pipework by mechanical means, in accordance with approved procedures. In producing the assemblies, you will be expected to use a range of equipment, hand tools and techniques, appropriate to the operations being performed.
The assembly activities will include producing threads on the external ends of the pipe, using stocks and dies or threading machines, and joining the pipes using a range of fittings, which will include flanges and gaskets, straight couplings, elbows, tee pieces, reduction pieces and other fittings as appropriate to the application.
Your responsibilities will require you to comply with organisational policy and procedures for the ferrous pipe assembly activities undertaken, and to report any problems with the equipment, materials or assembly activities that you cannot personally resolve, or are outside your permitted authority, to the relevant people. You will be expected to work to instructions, either alone or in conjunction with others, 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 assembly and joining procedures to ferrous marine screwed pipework. You will have an understanding of the pipework assembly, and its application, and will know about the screwed pipework assembly process, components and materials used, in adequate depth to provide a sound basis for carrying out the activities, correcting faults and ensuring that the work output is produced to the required specification.
You will understand the safety precautions required when working on marine ferrous pipework assembly activities, and with 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, 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
- 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
- join the components using the specified connectors and securing devices
- check the completed pipework 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 assembling and joining ferrous marine screwed pipework, and with the tools and equipment that are used both on land and onboard vessels
- the personal protective equipment (PPE) to be used when assembling marine screwed pipework
- the hazards associated with the marine pipework assembly activities (such as handling long lengths of pipe, using pipe screwing machinery, handling sealing agents), and how they can be minimised
- how to obtain and interpret information from job instructions, drawings and specifications, in relation to work undertaken
- the preparation of pipework and fittings for the assembly operation (such as checking for damage, removing foreign objects, dirt and swarf from bore of pipe, removing burrs)
- the range of pipe fittings that can be used, and how to identify them (to include straight connectors, elbows, tee pieces, reduction pieces, flanged fittings, valves, blanking pieces/cap ends)
- how to determine the overall length of the pipework required, taking into account allowances for pipe fittings and screwed connections
- how to produce screw threads on the pipe ends, and the tools and equipment that can be used (to include stocks and dies, pipe threading machines)
- methods used to seal screwed joints (such as tapes and sealing compounds)
- the use of flanges to connect pipes; use of gaskets; and torque loading of flange bolts
how to identify the correct orientation of fittings with regard to flow
the methods used to handle pipework assemblies
- the supporting methods that are used when assembling pipework, and the type of fittings that are used
- the tools and equipment used when assembling pipework
- 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 standards to be attained, and company quality procedures
- the extent of your own responsibility 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 ferrous pipe assembly and joining activities:
- use the correct pipe assembly drawings, specifications or job instructions
- ensure that appropriate COSHH regulations are adhered to
- check that all tools and equipment are in a safe and usable condition
- ensure that the components and pipes used are free from foreign objects, dirt or other contamination
- ensure that appropriate techniques are used to assemble the pipework system
- leave the work area in a safe condition on completion of the activities
Prepare for the pipe joining activities, to include carrying out all of the following:
- cutting pipes to length with appropriate allowance (such as for threading, flaring, and wall forming)
- selecting and setting up dies in stocks or forming machines
- cutting form ends on pipe ends to the appropriate length
- checking that the completed forms have the required fit
Assemble joined pipework, using four of the following:
- straight couplings
- flanges
- drain/bleeding devices
- elbows
- reduction pieces
- blanking caps
- tee pieces
- valves
Produce joined pipe work which contains two of the following features:
- angular bends
- offsets
- bridge sets
- expansion loops
Assemble pipework using all the following methods and techniques:
- securing and fitting pipework supports to ship structures
- using gaskets, seals or jointing compounds
- connecting pipe-to-pipe
- alignment and levelling of pipework
- connecting pipe to ship's equipment
- torque loading of bolts
- attaching identification markers of pipe contents (such as colour coding, labels)
Assemble pipe and components to form two of the following marine pipe systems:
- auxiliary steam
- fuel systems
- steam drains
- drain systems
Produce pipework assemblies, in accordance with one of the following standards:
- BS or ISO standards and procedures
- customer (contractual) standards and requirements
- company standards and procedures
- specific system requirements
- recognised compliance agency/body's standards
- other accepted international standards
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