Micaland T1 Crusher Revamp

BRS was engaged by Micaland to perform the electrical engineering and design services for the revamp of the T1 Transportable Mobile Crusher.

The T1 Crusher is a mobile and transportable coal crushing plant that allows mine sites to size or crush down mined coal so that it is suitable for processing in the washplant. The mobile nature of the crushing plant allows sites to forgo the need for capital costs to install fixed crushing plant machinery, as well as allow for flexible crushing and stockpiling arrangements prior to processing in the washplant. Before the revamp, the crusher was in service for many years and its equipment was controlled using relay logic only.

The electrical revamp of the crusher included:

New Motor Control Centre (MCC) design and drafting;

Power system design and modelling;
Control systems design and drafting;
PLC & SCADA system design and implementation;
Workshop Factory Acceptance Testing (FAT) of equipment;
On site commissioning and construction support.


BRS Responsibilities

  • Electrical and Instrument Design
  • PLC & SCADA Design and Implementation
  • Onsite Installation Support and Commissioning
  • Remote Access
  • Supervise Construction and Shutdown works
  • Commissioning of machine
  • Ongoing Expansion of Upgrades
  • Switchboard Design
  • Production of “as built” drawings for all areas of machinery
  • Original architecture and implementation of drawing management system
  • Ongoing support for site personnel in operation of the system
  • Drafting services for creation of CAD versions of all drawings
In addition BRS were also engaged to perform the power system modelling for the T1 Crusher. This involved modelling the electrical system from generator supply to final circuits, in SKM’s PTW32 software.

Within this software model, fault and arc flash studies were conducted to determine the expected fault levels of the installed system, the ideal protection settings for all applicable electrical apparatus, expected arc flash incident energy levels.

The results of these studies were used to allow site to reduce the risk to machinery and personnel where applicable, as well as understand the risks and consequences involved for personnel working in and around the MCC. Results from the arc flash study were also used to produce electrical safety information stickers and signage to inform personnel of the dangers of arc flash incident levels present plus what minimum PPE is required to reduce personal injury in the case of an arc flash event.