Support welding operations in engineering construction

Business Sectors (Suites): Supporting Activities in Engineering Construction
Developed by: ECITB
Approved on: 02 Mar 2021


​This standard is about supporting welding operations in engineering construction.

You will need to be able to interpret and understand instructions in order to assist in the selection, transportation, positioning and setting up of the welding equipment and associated accessories whilst adhering to health and safety legislation, regulations and safe working practices.

In the context of this standard, your responsibility is limited to supporting the welder who completes the welding activities and working within clearly defined procedures and following instructions from trade/craft personnel. In some cases, you may still be expected to refer to others for final authorisations, even though you remain responsible for identifying and implementing decisions within the limits of your responsibility.

This standard is for
This standard is for those that are supporting activities in engineering construction.

Performance criteria

You must be able to:

  1. ​work safely at all times, complying with health, safety, environmental and other legislation, regulations, guidelines and local rules and procedures
  2. ensure that the work environment, material, equipment and tools are suitably prepared for the activities to be undertaken
  3. follow the relevant job instructions in association with the relevant welding procedure

  4. obtain the correct welding equipment, ancillary equipment and consumables and ensure they are in good condition

  5. safely handle, transport and connect equipment and ancillaries in the appropriate location

  6. ensure the welding equipment and ancillaries are located in a safe location and operating correctly

  7. on completion of welding activities, shut down and make sure the equipment is in a safe condition, ready for disconnection

  8. safely handle, disconnect and store welding equipment, ancillaries and consumables

  9. reinstate the work area

  10. deal promptly and effectively with problems within your control and report those that have been and those that cannot be solved

Knowledge and Understanding

You need to know and understand:

  1. ​relevant legislative, regulatory and local requirements or procedures and safe working practices including your responsibilities with regards to reporting lines and procedures
  2. preparation and reinstatement requirements in respect of the work area, material, and equipment, and the possible consequences of incorrect actions in these areas
  3. the common welding processes and equipment required
  4. basic requirements for pre and post weld treatments
  5. how to identify the range of gases required for specific processes
  6. how to apply the related control procedures for the consumables required for specific processes to include:

    • how to identify them
    • what the different types are
    • how to store, handling and disposal of them (before during and after use)
  7. cable management and inspection procedures

  8. equipment handling methods and setting up required for specific processes
  9. tool and equipment control: the correct use of relevant tools and equipment and your individual responsibility for the use, care and security of those you use
  10. appropriate control procedures and the possible consequences of incorrect actions in these areas


Work environment
Typical work environments could include:

  • engineering construction sites
  • controlled operations
  • offshore installations
  • maintenance sites
  • nuclear sites
  • repair sites

Work environments may be open or restricted spaces:

  • at height
  • confined spaces
  • control rooms
  • controlled operational and offshore installations
  • designated work areas
  • explosive atmospheres
  • existing plants and structures
  • fabrication workshops
  • in plant rooms
  • inside structures, system and plant
  • on access structures (scaffold)
  • on open structures
  • onshore and offshore installations
  • potential explosive atmospheres
  • shafts
  • shipyards
  • tunnels

Setting up
Typical setting up could include:

  • transporting the welding power source and associated welding equipment and accessories to a suitable location
  • making sure there is an electrical connection to power supply and output terminals
  • connecting the gas supply where appropriate
  • routing of welding and return cables from the power source to welding location via invertor
  • connecting remote-control cabling and routing to the welding location
  • installing of fire blankets/tent and screens as appropriate

Scope Performance

Scope Knowledge





Common welding process
In the context of this function, common welding processes means processes widely used in the engineering construction industry such as; manual operated and includes Shielded metal arc welding (SMAW), Gas tungsten arc welding (GTAW), Gas metal arc welding (GMAW) and Flux core arc welding (FCAW).

Links To Other NOS

External Links

Version Number


Indicative Review Date

07 Jun 2025





Originating Organisation

Engineering Construction Industry Training Board

Original URN


Relevant Occupations


SOC Code



Engineering; supporting; read; extract; specifications; drawings; requirements; component; handling; transportation; tools; equipment; assembly; positioning; installation; welding; consumables; defects; gases; cylinders; joining; thermal; MIG; MAG; MMA; S