EMESRT Publishes PR-5A Version 2

First published in 2015, in consultation with the wider industry, Vehicle Interaction System Performance Requirement 5A (PR-5A) was developed to establish an industry definition for the key elements of vehicle interaction and provide designers with fundamental functional / performance requirements. PR-5A has laid a platform for other important work such as the development of an interoperability protocol to enable the development of standard machine interfaces for interdependent technologies fitted on surface and underground mobile equipment to reduce the exposure to hazardous vehicle interaction.  PR-5A has also been used to guide the ACARP research project that is developing the Proximity Detection System (PDS) Testing Methodology.

PR-5A focuses on levels 7, 8 and 9 of the EMESRT 9-step hierarchical type model based around design, operate and react elements, see figure below.  The objective is to prevent a person or equipment (machine or vehicle) causing a potential unwanted event (PUE) in the following four PUE categories resulting in injury or equipment damage:

  1. Equipment to person
  2. Equipment to equipment
  3. Equipment to environment
  4. Loss of control of equipment

“PR-5A is globally recognised and referenced throughout the mining industry.  EMESRT has always tried to bring the designer and user together to get an effective outcome.

Version 1 was developed with more of a designer perspective of what the systems needed to provide. Version 2 adds a defined level 7, 8 and 9 user case into the mix, allowing a balance between user and designer’s needs.

The new version has been consulted on in several different industry forums, including at the recent International Council on Mining and Metals (ICMM) workshop held in London generating in depth discussion amongst participants.  The fundamental change is that the mining industry users have defined the functional needs for levels 7, 8 and 9.

Previously “designers were providing with the best intentions what they thought the design should address”, said Tony Egan, EMESRT Advisory Group member representing Glencore.”

“Since the release of version 1, PDS suppliers have used PR-5A as a key reference point in their designs.  Recent discussions regarding the user functional changes in version 2 revisions have the industry talking”, said Jonathan Keyes, Sedna.

Click here to download version 2 of PR-5A.

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