AS 4983:2010 pdf free download - Gas fuel systems for forklifts and industrial engines

AS 4983:2010 pdf free download – Gas fuel systems for forklifts and industrial engines

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AS 4983:2010 pdf free download – Gas fuel systems for forklifts and industrial engines.
AS 4983 specilies requirements ftr liquefied petroleum gas ([P Gas) and compressed natural gas (CNG) fuel systems for engines mounted on industrial equipment. either for the propulsion of the equipment or for driving some auiIiar function. e.g. a miser or a pump. It prosiidcs rcquircments for the dcsign and construction of component parts. and for their installation in equipment. and for tests, commissioning and periodic inspection.
The Standard applies to fixed installations, mobile and portable equipment such as forklifts. floor sweepers. polishers, tow tractors, elevating work platforms and industrial engines.
NOTE: lor installations to industrial stationary engines connected to a reticulated fuel supply, reference should be made to AS 3l4 or ASNZS 1596 for storage and handling or AS 5601 for gas installations.
This Standard does not apply to other LP Gas or CNG usage. such as the gas supply system for appliances in caravans, mobile homes or for the propulsion of marine craft or passcngcr or commercial vehicles.
This Standard does not apply to Liquefied Natural Gas (LNGI fuel supply systems.
This Standard does not cover the areas where major structural modifications arc to bc carried out to the industrial equipment (major structural modifications arc those not defined in Clause 1.6), Prior to commerleenment of such work, guidance should be sought from time equipment manufacturer or a professional engineer who is esperienced in the relevant disciplines.
1.1.2 AppllciiIlon
The relevant authority having jurisdiction may determine the extent of application of this Standard.
The objective of this Standard is to provide designers. manufacturers, installers and regulatory authorities with technical testing. inspecting and certification requirements for l.P Gas and CNG fuel systems for forklifts and industrial engines so as to provide functional, safe installations.
A list of the documents referred to in this Standard is given in Appendix A.
Any alternative materials, equipment. designs. method of assembly or procedures, that do not comply with the specific requirements of this Standard, or arc not mentioned in U. hut which give eqtiisalenl results to those specified. may be acceptable. Under such conditions the regulatory authority can give advice on the procedure for approval.
(a) There shall be at least four points of attachment to the structure of the forklift or industrial equipment. the distance between which shall be sufficient to ensure the stability of thc container.
(b) The sheet metal shall be reinforced at each attachment point with metal plates of areas not lcss than 3600 mm and thickness not less than 2,5 mm. An such reinforcement plates shall be contoured to the shape of the sheet metal, It is preferred thai a round washer be used but where a square plate is fitted thc corners shall be radiuscd to 5 mm and the bolt hole shall be positioned in the centre of the plate..washer wherever possible. Where the bolt hole is not central in thc plate. the nearest edge shall be bent to trm an L•section for stiffening.
NOTE: Flat areas. cscn if ribbed, can bc unsuitable for mountings without substantial reinforcement, because of flesing and farigue. Anchoring should be to siruciural members w hercscr possible.
(c) Where anchorage bolts pass through a hollow section. a spacer tube shall be provided to present collapse of that section under load.
(d) Anchorage bolts, screws or studs for band or flange mountings shall base a diameter of not less than that shown in [able 3.3. and the mechanical properties shall be as tollows:
(i) Fasteners with ISO metric thread Property Class 4.6 in accordance
with AS 4291.1.
(ii) Fasteners other than ISO metric shall be of a commercial grade.
(e) Where clamping bands are used, at least two steel bands shall be provided unless the container is less than 25 1. The dimensions of’ the hands shall be not lcss than those shown in [able 3.3.
(1) Where parts are joined. e.g. by welding a stud to a band, the strength of the joint shall be not less than the strength of either component.
NOTE: Cylindrical containers secured using clamping bands may require end relention features as a means of resisting longitudinal end loads on the container due to any impact.
(g) Underslung containers shall be anchored to structural members or if containers are to be mounted to undcrfloor flat areas the attachment and mountings shall be approsed by a professional engineer.

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