Regulation 3 Application and interpretation

Subject to paragraph (2), this Chapter applies to welding equipment using one or more of the following welding processes—

Nothing in this Chapter applies to welding equipment using the following welding processes—

In this Chapter and Schedules 1 and 2—

• “flux cored arc welding” means a welding process that uses, with or without external shielding gases, composite tubular filler metal electrodes consisting of a metal sheath and a core of various powdered materials, producing an extensive slag cover on the face of a weld bead;

• “limited-duty arc welding” means arc welding processes that are not for industrial and professional applications and that—

  1. (a)

     use single-phase public low-voltage input;

  2. (b)

     if engine driven, do not exceed an output power of 7.5 kilovolt-amperes (“kVA”); and

  3. (c)

     do not require arc-striking and stabilising devices, liquid cooling systems or gas consoles for operation;

• “manual metal arc welding” means an arc welding process with a coated electrode where the operator’s hand controls the travel speed of the welding operation and the rate at which the electrode is fed into the electric arc;

• “metal active gas welding” means a gas metal arc welding process in which—

  1. (a)

     coalescence is produced by heating with an arc between a continuous filler metal (consumable) electrode and the workpiece area; and

  2. (b)

     shielding is obtained entirely from an externally supplied gas, or gas mixture, that is active;

• “metal inert gas welding” means a gas metal arc welding process in which—

  1. (a)

     coalescence is produced by heating with an arc between a continuous filler metal (consumable) electrode and the workpiece area; and

  2. (b)

     shielding is obtained entirely from an externally supplied gas, or gas mixture, that is inert;

• “plasma arc cutting” means an arc cutting process that uses a constricted arc and removes the molten metal in a high velocity jet of ionised gas (plasma gas) issuing from the constricting orifice, and which is a direct-current electrode-negative process;

• “plasma gas” (also referred to as “orifice gas” or “cutting gas”) means a gas directed into the torch to surround the electrode, which becomes ionised by the arc to form a plasma and issues from the torch nozzle as the plasma jet;

• “resistance welding” means a thermo-electrical process in which—

  1. (a)

     heat is generated at the interface of the parts to be joined by passing an electrical current through the parts for a precisely controlled time and under a controlled pressure; and

  2. (b)

     no consumables such as welding rods or shielding gases are required;

• “self-shielded flux-cored welding” means a wire welding process in which—

  1. (a)

     a continuous hollow-wire electrode is fed through the welding gun into the weld joint without the need to use an external shielding gas to protect the weld pool from contamination; and

  2. (b)

     instead of an external shielding gas, a flux compound within the hollow wire reacts with the welding arc to form a gas that protects the weld pool;

• “shielding gas’” (also referred to as “secondary gas”) means a gas that does not pass through the orifice of the nozzle, but instead passes around the nozzle and forms a shield around the electric arc;

• “shielded metal arc welding” means an arc welding process in which—

  1. (a)

     coalescence is produced by heating with an electric arc between a covered metal electrode and the workpiece and work area;

  2. (b)

     shielding is obtained from decomposition of the electrode covering; and

  3. (c)

     pressure is not used and filler metal is obtained from the electrode;

• “stud welding” means a welding process in which a metal stud or a similar part is joined (manually, in automated or in semi-automated way) to a workpiece using an arc of electricity to heat both parts;

• “submerged arc welding’” means an arc welding process—

  1. (a)

     which uses an arc or arcs exceeding 600 amperes between a bare metal electrode or electrodes and the weld pool;

  2. (b)

     in which the arc and molten metal are shielded by a blanket of granular flux on the workpieces; and

  3. (c)

     in which no pressure is applied and the process uses filler metal from the electrode and sometimes from a supplementary source such as a welding rod, flux or metal granules;

• “tungsten inert gas welding” means an arc welding process in which—

  1. (a)

     coalescence is produced by heating with an arc between a single tungsten (non-consumable) electrode and the workpiece area;

  2. (b)

     shielding is obtained from a gas or gas mixture;

  3. (c)

     pressure may or may not be used and filler metal may or may not be used;

• “welding equipment” means products that—

  1. (a)

     are used for manual, automated or semi-automated welding, brazing, soldering or cutting (or all of the above);

  2. (b)

     are stationary or transportable; and

  3. (c)

     consist of linked parts or components, at least one of which moves and which are joined together to produce coalescence of metals by heating them to the welding temperature (with or without the application of pressure) or by the application of pressure alone, with or without the use of filler metal, and with or without the use of shielding gases, using appropriate tools and techniques, resulting in a product of defined geometry.