FRAS Polyurethane — Underground Mining

Elastomers Queensland manufactures FRAS polyurethane products for the Australian underground mining industry. Our FRAS capability covers sheeting, rollers, custom mouldings, conveyor accessories, and a full range of underground components. We manufacture from raw materials in our Clontarf, Queensland facility, which means we control the formulation and the process through the entire manufacturing chain.

What is FRAS Polyurethane?

FRAS stands for Fire Retardant Anti-Static. It describes polyurethane that has been specially formulated and tested to exhibit two properties critical for underground mining safety.

Fire retardancy means the material does not sustain combustion after the ignition source is removed — it self-extinguishes. In an underground coal mine where methane gas may be present, and in underground hard rock mines where dust and confined spaces create fire risks, a non-metallic component that sustains combustion is a serious safety hazard. FRAS formulation incorporates fire retardant chemistry into the polyurethane during manufacture.

Anti-static means the material dissipates electrostatic charge rather than accumulating it. Static charge build-up is an ignition risk in underground mining environments, particularly in the presence of methane or coal dust. FRAS polyurethane incorporates conductive additives that provide a defined electrical resistance path, preventing static accumulation.

Both properties must be present — a material that is fire retardant but not anti-static, or anti-static but not fire retardant, does not qualify as FRAS.

TRG3608 and Australian Compliance Requirements

TRG3608 (formerly MDG3608) is the NSW Resources Regulator technical reference guide that defines the technical requirements for FRAS materials used in underground coal mining. It specifies test methods, performance criteria, and documentation requirements. While TRG3608 originated in NSW, it has effectively become the national reference for FRAS materials accepted by mine operators across Australia.

Compliance with TRG3608 requires that FRAS products be tested to the specified fire and anti-static test methods by an accredited testing laboratory, and that the manufacturer maintain documentation of the raw material formulations used in FRAS products. The purpose is to ensure that every batch of FRAS material is manufactured to the same specification as the batch that was tested.

Elastomers Queensland maintains compliance documentation for our underground mining products. Contact us for details.

In addition to TRG3608, some mining companies and mine operators specify additional requirements or apply AS 4024 (Safety of Machinery) requirements to non-metallic components in certain applications. We can discuss specific compliance requirements for your mine site.

FRAS Products Available from Elastomers Queensland

FRAS Sheeting: Cast polyurethane sheet in FRAS grade is used for underground conveyor accessories, ventilation curtains, drive station splash guards, and lining panels. We manufacture FRAS sheet in thicknesses from 3mm through 100mm and in standard or custom plan dimensions.

FRAS Rollers and Conveyor Components: Underground conveyor systems use FRAS polyurethane for roller lagging, belt scrapers, skirt rubber and skirting systems, and other belt-contact components where fire retardancy is required.

FRAS Custom Mouldings: Where an underground application requires a component that is not available as a standard product, we manufacture FRAS custom mouldings to drawing. Underground mining components we have manufactured in FRAS include hungry boards, shuttle car bumpers, cable crossover pads, pan line joiners, wheel chocks, and custom-profiled liners.

FRAS Wear Liners: FRAS wear liners for underground chutes, transfer points, and equipment panels are manufactured to drawing in FRAS polyurethane, with steel backing where structural attachment is required.

FRAS vs Standard Polyurethane — When Do You Need FRAS?

FRAS polyurethane is used for components in underground mining environments in Australia. It is generally not required for surface mining or general industrial applications, and specifying FRAS where it is not required adds unnecessary cost.

The practical rule is: if the component will be used underground — below the surface in a coal or hard rock mine — specify FRAS. If the application is surface mining (open cut), surface processing, or any other non-underground environment, standard polyurethane provides the same mechanical performance at lower cost.

Why Queensland-Based FRAS Supply Matters

Elastomers Queensland manufactures FRAS polyurethane in Brisbane. For mine sites and processing plants across Australia, local manufacture means shorter freight times, lower transport costs, and the ability to respond quickly to urgent requirements.

A spare component needed urgently for a planned shutdown can be manufactured and dispatched without international or long-haul logistics overhead, and refurbishment orders can be turned around and returned on schedules that suit planned maintenance windows.