DYNA Engineering conveyor guards safer than steel

Conveyor systems are considered one of the highest risk areas on a mine site.

High density polythyelene (HDPE) conveyor guards are revolutionising the conveyor industry because traditional steel guards cannot match HDPE’s superior safety, convenience and lower maintenance benefits.

Reducing time spent in and around the conveyors is a major plus and helps reduce overall risk.

Key safety benefits:

  1. The safety risks around lifting weights are constantly in the mining industry spotlight. Lifting objects weighing 15 kilograms or more is considered a no-go. Most steel guards struggle to remain lighter than 12 kilograms, and when site operators are consistently removing and re-installing guards to maintain conveyors, the repetitive nature and stress can add up and take its toll. Compared to conventional steel, HDPE conveyor guards are a lightweight solution – being up to 40 per cent lighter.
  2. During maintenance shutdowns, HDPE guards can be safely and easily secured on the conveyor’s handrail. This conveniently ensures they are out of harm’s way. It also reduces the likelihood of them being misplaced, which sometimes occurs under maintenance shutdown pressures
  3. Special hot tooling requirements for costly on site cutting and welding with steel guards are no longer necessary with HDPE guards
  4. Each HDPE guard can be removed in a matter of minutes with simple tooling, for access to the guarded conveyor. For installation, the guard is simply slid into place and fastened with two bolts so it can’t be removed. No complicated instructions or special skills are required, reducing the likelihood and risk of accidents during maintenance.

Manufactured in safety yellow – requires no painting

Conventional steel guards require a great deal of painting to maintain the Safety Yellow colour.

Due to the size of the mesh, it’s a costly and wasteful process. A lot of paint is used, and a significant amount is lost in the process.

Often, operators resort to hand painting, which is extremely time consuming and expensive.

However, HDPE conveyor guards are made from Safety Yellow-coloured material, so no painting is required. This greatly reduces conveying system maintenance hours and cost.

Free of rust and corrosion

One of the major outright benefits HDPE has over steel results from it being a non-metallic material. HDPE is rust and corrosion free. This further reduces long term maintenance costs and minimises potential rectification works.

Resistant to chemicals

HDPE conveyor guards are resistant to many chemicals. This makes them very applicable to conveyor guarding in processing plants and facilities. Chemicals commonly used in mining processing, to which HDPE is resistant, include caustic soda, hydrochloric acid, kerosene and sulfuric acid.

No metal detector issues

Steel guarding can cause interference issues with metal detectors used on conveyors to detect fugitive materials. This can require lowering the detector’s sensitivity to remove the problem, which can allow fugitive material to slip through.

HDPE conveyor guards do not interfere with metal detectors. This allows for an increase in metal detector sensitivity and calibration to the optimum level

Additional DYNA Engineering “X” HDPE conveyor guard advantages

More robust, stronger design

DYNA’s exclusive and patented “X” shape design increases the guard’s strength substantially (up to 60 per cent) when compared with others. It delivers reduced deflection and is well above the minimum Australian standard, which will help keep personnel safe. It is engineered to be robust, suited to heavy duty mining and industrial applications.

The deflection differences between a conventional HDPE conveyor guard (L) versus DYNA’s new “X” design HDPE guard (R) is clearly shown in these diagrams.


The deflection differences between a conventional HDPE conveyor guard versus DYNA’s new “X” design HDPE guard is clearly shown in these diagrams.

Custom designed to exceed Australian Standards

DYNA’s “X” design HDPE guards are designed and engineered to exceed Australian Standards:

  • Series AS 4024:1:2014
  • AS 4024:3610:2015
  • AS 4024:3611:2015

They can be designed to suit existing equipment, replace conventional steel mesh guards and/or can be adapted to incorporate metal detectors, belt change stations, access platforms, access points, conveyor trip wires, cabling and any other requirement.

They can even be designed to incorporate retractable idler roller frames. In this case, access to the idler frame can be made via the simple removal of a single guard.

There is also a fully enclosed design option which incorporates hungry boards to contain rough material on the conveyor.

Lighter weight

DYNA Engineering HDPE conveyor guards can be as light as six kilograms for a 1 metre x 1 metre panel. The guard weight is engraved on the panel for quick and easy assessment by operators to help prevent the risk of lifting injuries.

Faster delivery
Being Australian made (they are manufactured in Perth, Western Australia), a replacement guard for an existing conveyor can be manufactured in as little as a couple of days.

This has a lot of appeal when compared to the usual weeks or months with others sourced from overseas. Naturally, lead-times will vary depending on the scope of the work.

According to Thomas Greaves, DYNA’s new HDPE conveyor guards resulted from many discussions with customers.

“We’re great believers in engineering improvements emanating directly from those using it first-hand. This product isn’t something that was built overnight, it’s something we’ve been putting together over a number of years. We’re hugely focused on safety and cost reductions when it comes to new product development and innovations. This superior HDPE material, coupled with our ‘X’ design for stronger and safer mesh, ticks both boxes beautifully,” he said.

For further information contact:
Thomas Greaves, DYNA Engineering, 0409 996 012, thomas@dynaeng.com.au
David Chandler, author, Effective Marketing, 0418 911 559, david@effectivemarketing.net.au

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