Assembling non-metallic marine pipework

This standard identifies the competences you need to produce assemblies in non-metallic marine pipework, in accordance with approved procedures. The pipework systems being assembled could include salt/raw water, fresh water, chilled water, air conditioning, waste water, deck drains and other salvage drainage systems. In producing the assemblies, you will be expected to select and use a range of equipment, hand tools and techniques, appropriate to the operations being performed. 

The assembly activities could include producing cemented/glued joints, welding, compression joints and push-fit joints. The pipe assemblies produced will use a range of fittings, which could include straight connectors, elbows, tee pieces, reduction pieces, flanges, tank connectors, tap connectors, valves and other fittings, as appropriate to the application.

Your responsibilities will require you to comply with organisational policy and procedures for the marine pipework assembly activities undertaken and to report any problems with the equipment, materials or pipe assembly activities that you cannot personally resolve, or are outside your permitted authority, to the relevant people. You will be expected to work 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 provide a good understanding of marine non-metallic pipe systems and will provide an informed approach to applying marine non-metallic pipework assembly procedures. You will understand the pipework assembly and its application and will know about the assembly techniques, pipe 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 the 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.

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1. work safely at all times, complying with health and safety and other relevant regulations, directives and guidelines 2. follow the relevant instructions, assembly drawings and any other specifications 3. ensure that the specified components are available and that they are in a usable condition 4. use the appropriate methods and techniques to assemble the components in their correct positions 5. use specified connectors and securing devices to secure components 6. produce pipework assemblies to meet required specification 7. check the completed assembly to ensure that all operations have been completed and the finished assembly meets the required specification 8. deal promptly and effectively with problems within your control and report those that cannot be solved

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1. the specific safety precautions to be taken when assembling non-metallic marine pipework and with the tools and equipment that are used in the workplace and onboard vessels (including general workshop and site safety, accident procedure; statutory regulations, risk assessment procedures and COSHH regulations) 2. the personal protective equipment (PPE) to be used when assembling non-metallic marine pipework 3. the hazards associated with the non-metallic marine pipework assembly activities (such as handling long lengths of pipe, using hot air/gas torches, plastic welding heating elements, handling adhesives and sealing agents) and how they can be minimised 4. how to use and extract information from engineering drawings and related specifications (to include symbols and conventions to appropriate BS or ISO standards) in relation to work undertaken 5. how to interpret first and third angle drawings, imperial and metric systems of measurement, work reference points and system of tolerancing 6. how to carry out currency/issue checks of the specifications you are working with 7. 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) 8. the range of pipe fittings that can be used and how to identify them (to include straight connectors, elbows, tee pieces, reduction pieces, tank fittings, flange, valves, blanking pieces/cap ends) 9. the different types of fittings available (such as cemented/glued fittings, compression fittings, plastic welded, swaged and push-fit fittings) 10. how to determine the overall length of the pipework required, taking into account allowances for pipe fittings 11. how to ensure correct alignment and identify the correct orientation of fittings with regard to flow and the consequences of incorrectly orientating the fitting 12. the methods used to prepare pipe ends and fittings when using adhesives and why it is necessary to ensure that these preparations are carried out 13. the tools and equipment used when assembling pipework 14. the methods used to glue the joints and how to recognise when the fitting is correctly secured 15. the various adhesives and sealing compounds that are used on non-metallic pipework 16. the precautions to be taken when using adhesives and sealing compounds (such as adequate ventilation especially in confined spaces, away from naked flames, avoiding skin contact) 17. the precautions to be taken when using hot air/gas torches to form the joint and the effect of overheating the joint 18. the principles of sealing and use of compression fittings and the effects of over-tightening the fittings 19. the use of push-fit connectors and their advantages and disadvantages 20. the methods used to handle and support pipework during assembly 21. the type of fittings that are used for securing pipework assemblies to marine structures 22. the standards to be attained and company quality procedures 23. the procedure for the safe disposal of waste materials 24. the recording documentation to be completed for the marine pipe assembling activities undertaken and where appropriate, the importance of marking and identifying specific pieces of work in relation to the documentation 25. the extent of your own responsibility and whom you should report to if you have problems that you cannot resolve

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1. Carry out all of the following during the pipework assembly activities:

   1. use the correct pipework assembly drawings, specifications or job instructions
   2. ensure that appropriate COSHH regulations are adhered to
   3. check that all tools and equipment are in a safe and usable condition
   4. ensure that components and pipes are free from foreign objects, dirt or other contamination
   5. leave the work area in a safe and tidy condition on completion of the activities

2. Assemble pipes and pipe components, to form three of the following marine pipework systems

   1. fresh water
   2. salt/raw water
   3. chilled water
   4. air conditioning
   5. waste water
   6. deck drains
   7. fuel
   8. lubrication oil
   9. steam drains
   10. hydraulic
   11. fire main
   12. refrigeration gas
   13. other salvage drainage systems

3. Cut pipes to length and assemble them using three of the following methods:

   1. compression fittings
   2. snap-on/push fittings
   3. cemented/glued fittings
   4. plastic hot welding
   5. swaged flexible

4. Produce pipework assemblies which contain six of the following types of fittings:

   1. straight couplings
   2. valves
   3. elbows
   4. flanged
   5. blanking caps
   6. tee pieces
   7. reduction pieces
   8. drain/bleeding devices
   9. screwed fittings (such as tank, tap, pump, gauges)

5. Produce assembled pipework which contains two of the following features:

   1. angular bends
   2. offsets
   3. bridge sets

6. Assemble pipework, to include carrying out all of the following:

   1. connecting pipe to pipe
   2. connecting pipe to ship's equipment
   3. using gaskets, seals or jointing compounds
   4. aligning and levelling of pipework
   5. securing and fitting pipework supports to ship structures
   6. torque loading of connections
   7. attaching identification markers of pipe contents (such as colour coding, labels)

7. Produce pipework assemblies which comply with one of the following standards:

   1. BS or ISO standards and procedures
   2. customer (contractual) standards and requirements
   3. company standards and procedures
   4. specific system requirements
   5. recognised compliance agency/body's standards
   6. other accepted international standards

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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

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3

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2021

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Current

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Original

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Semta

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SEMME3043

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Marine Engineering Trades

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5235

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engineering; marine; assemble; non-metallic; pipework; fittings; compression; snap-on; push fit; glued; plastic welded

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