Case Studies

What we've been working on at indEx


Under ATEX, indEx will provide a manufacturer's declaration for zone 2 applications.

Restricted Breathing Solution, UK Refinery


Supply zone 2 enclosures to house equipment for remote monitoring systems, to be installed in over 400 locations in one of Europe’s largest oil refineries.


  • The enclosures needed were cost and time sensitive as well as having to fit a pre-determined footprint.
  • Flameproof enclosures (Ex d) were considered far too expensive, over engineered, cumbersome, heavy and unsuitable.
  • The enclosure needed to house an uncertified switching in normal operation relay, as well as a PLC and other circuitry and components suitable for RTU.
  • zone-2-b zone-2-c

    One of Europe’s largest refineries goes remote control!


    • indEx were able to mimic the exact footprint of the original enclosure and build a suitable sample for prototype use within 48 hours.
    • indEx personnel have a wealth of experience and knowledge in providing bespoke solutions using Ex e (increased safety) junction enclosures and panels.
    • For zone 2 indEx proposed the use of the zone 2 restricted breathing (Ex nR) protection concept.

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