Hima-Sella begins PLC upgrade programme for UK refinery

Hima-Sella, an expert in engineering safety systems, has won a £1.75m contract to begin work on a site-wide PLC upgrade programme for a major UK refinery, following the customer’s formal acceptance of Hima-Sella’s Remote I/O and Network box designs.

A Hima Himax unit — a Programmable Electronic System — will act as a combined data concentrator and large programmable logic controller, communicating with around 100 network boxes distributed over three fibre-optic control loops.

Each Network box will then interface with up to 12 Remote I/O boxes, which in turn will have 25 channels for physically interfacing with motorised valves, switches, sensors and other hardware.

In addition, under the site-wide PLC upgrade contract, Hima-Sella will project manage the complete supply chain.