Plant - Term definitions

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Below are definitions of many of the terms used in the application for registration of a plant design, the application for registration or re-registration of an item of plant and in the related regulations.

For more definitions refer to regulation 4.1 of the Occupational Safety and Health Regulations 1996.

A

Alter - in relation to plant, means to change the design of, add to or take away from the plant where the change may affect safety or health, but does not include routine maintenance, repairs or replacement.

Amusement structure - means equipment operated for hire or reward which provides entertainment or amusement through movement of the equipment, or part of the equipment, or when passengers travel on, around or along the equipment or move the equipment through self-powered motion.

NOTE: Amusement structures within the scope of AS 3533 other than Class 1 devices require registration of the plant design and registration of the item of plant.

B

Boiler - means a vessel or an arrangement of vessels and their interconnecting parts in which steam or other vapour is generated or in which water or other liquid is heated at a pressure above that of the atmosphere by the application of fire, the products of combustion, electrical power or by similar high temperature means and -

  • includes superheaters, reheaters, economizers, boiler piping, supports, mountings, valves, gauges, fittings, controls, the boiler setting and other equipment directly associated with the boiler; 
  • does not include a fully flooded or pressurized system where water or other liquid is heated to a temperature lower than the normal atmospheric boiling temperature of the liquid.

NOTE: Boilers categorized as hazard level A, B or C according to the criteria set out in AS 4343 require registration of the item of plant.
Boom-type elevating work platform - means a telescoping device, hinged device, articulated device or any combination of those devices used to support a platform on which personnel, equipment and materials may be elevated.

NOTE: Boom-type elevating work platforms require registration of the plant design.

Bridge crane - means a crane comprising a bridge beam mounted at each end to an end carriage and capable of travelling along elevated runways and having one or more hoisting mechanisms arranged to traverse the bridge.

NOTE: Bridge cranes with a safe working load greater than 10 tonnes, or which are designed to handle molten metal or dangerous goods require registration of the plant design.

Building maintenance unit - means a power operated suspended platform and associated equipment on a building or structure specifically designed to provide permanent access to the faces of the building or structure for maintenance or cleaning.

NOTE: Building maintenance units require registration of the plant design and registration of the item of plant.

C

Commissioning – in relation to plant, means performing the necessary adjustments, tests and inspections before the plant is used to ensure that the plant is in full working order in accordance with the requirements specified in the design of the plant, and includes recommissioning.

Concrete placing unit – means plant used to place concrete by way of pumping concrete through a pipeline attached to or forming part of a boom and capable of travelling over a supporting surface without the need for fixed runways or railway tracks and relying on gravity for stability, that is, with no vertical restraining connection between itself and the supporting surface and no horizontal restraining connection (other than frictional forces at supporting surface level) which could aid stability.

NOTE: Truck-mounted concrete placing units with booms require registration of the item of plant.

Crane - means plant that is used for the raising or lowering of a freely suspended load and moving a load horizontally and -

  • includes the supporting structure of the crane and its foundations; 
  • does not include any industrial lift truck, industrial robot, building maintenance equipment, suspended scaffold or lift.

D

Design verifier means a person competent to undertake the tasks set out in regulation 4.3(2)(c);

E

Escalator - includes a moving ramp for use by passengers but does not include a conveyor used only for moving goods.

G

Gantry crane - means a crane comprising a bridge beam supported at each end by legs mounted on end carriages which is capable of travelling on supporting surfaces or deck levels (whether fixed or not) and which has a crab with one or more hoisting units arranged to travel across the bridge.

NOTE: Gantry cranes with a safe working load greater than 5 tonnes, or which are designed to handle molten metal or dangerous goods require registration of the plant design.

Gas cylinder - means a rigid pressure vessel designed for the storage and transport of gas under pressure and to which AS 2030 applies that does not have more than 3,000 litres water capacity and is without openings or integral attachments on the shell other than at the ends.

NOTE: Gas cylinders require registration of the plant design.

H

Hoist - means an appliance intended for raising or lowering a load or persons and -

  • includes an elevating work platform, a mast-climbing work platform, a people and materials hoist, a scaffold hoist and a serial hoist;  
  • does not include a lift or building maintenance equipment.

NOTE: Hoists, other than elevating work platforms, that have a platform movement in excess of 2.4 metres and which are designed to lift people require registration of the plant design.

L

Lift - means any permanent plant (or plant that is intended to be permanent) which is in, or attached to, a building or structure and by means of which persons, goods or materials may be raised or lowered within or on a car cage or a platform and the movement of which is restricted by a guide or guides and includes an apparatus in the nature of a chair lift, escalator, moving walk or stairway lift and any supporting structure, machinery, equipment, gear, lift well, enclosures and entrances.

NOTE: Lifts require registration of the plant design and registration of the item of plant.

M

Mast climbing work platform - means a hoist having a working platform for the support or raising of personnel, equipment and materials to the working position by means of a drive system which moves along an extendable mast (which may be tied to a building) but does not include a lift or building maintenance equipment;

NOTE: Mast climbing work platforms require registration of the plant design.

Mobile crane - means a crane capable of travelling over a supporting surface without the need for fixed runways or railway tracks and which relies on gravity only for stability and accordingly, has neither a vertical restraining connection between itself and the supporting surface nor a horizontal restraining connection (other than frictional forces at the supporting surface level) to aid stability.

NOTE: Mobile cranes, other than tow trucks, with a safe working load greater than 10 tonnes require registration of the plant design.

P

Pre-fabricated scaffold - means a scaffold assembled from pre-fabricated components manufactured in such a way that the geometry of the scaffolding is predetermined.

NOTE: Pre-fabricated scaffolding systems require registration of the plant design.

Pressure equipment - means a boiler, pressure vessel and pressure piping to which AS/NZS 1200 applies and having a hazard level of A, B, C or D according to the criteria set out in AS 4343.

NOTE: Pressure equipment categorized as hazard level A, B, C or D according to the criteria set out in AS 4343, but not pressure piping, require registration of the plant design.

Pressure piping - means an assembly of pipes, pipe fittings, valves and pipe accessories subject to internal or external pressure and used to contain or convey fluid or to transmit fluid pressure and -

  • includes distribution headers, bolting, gaskets, pipe supports and pressure retaining accessories; 
  • does not include any boiler or pressure vessel or a pipeline to which any other written law applies.

Pressure vessel - means a vessel subject to internal or external pressure and -

  • includes interconnected parts and components, valves, gauges and other fittings up to the first point of connection to connecting piping, fired heaters and gas cylinder; 
  • does not include any boiler or pressure piping.

NOTE: Pressure vessels categorized as hazard level A, B or C as specified by the criteria set out in AS 4343, but not – 

  • gas cylinders to which AS 2030 applies;  
  • LP gas fuel vessels for automotive use to which AS/NZS 3509 applies; and 
  • serially produced vessels to which AS 2971 applies, require registration of the item of plant.

R

Regulatory authority - means any Commonwealth, State or Territory authority, other than the Commissioner, with responsibility for plant safety.

Repair - in relation to plant, means to restore plant to an operating condition but does not include replacement, routine maintenance or alteration.

S

Scaffold - means a temporary structure, stage or platform specifically erected to support access or working platforms, persons, plant or other material but does not include a gantry.

T

Tower crane - means a boom or jib crane mounted on a tower structure.

NOTE: Tower cranes require registration of the plant design and registration of the item of plant.

U

Use - in relation to plant, means to work from the plant or to operate, or maintain the plant.

V

Vehicle hoist - means a vehicle-hoisting device, the purpose of which is to provide accessibility for convenient under-chassis examination or service.

NOTE: Vehicle hoists which, in order to work, require the supply of energy of a kind other than, or in addition to, the energy supplied by the exertion of the body of a human or animal require registration of the plant design.

W

Work box - means a personnel carrying device designed to be suspended from a crane for the purpose of providing a working area for persons elevated by and working from the box.

NOTE: Work boxes require registration of the plant design.

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