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Hima-Sella has begun construction of a Himax-based high-integrity alarm system following an order from a major UK refinery.

Due for installation in quarter one 2011, the system will replace and improve upon the functions of another vendor’s system, for which support is no longer available.

The replacement system is being built around a Hima Himax programmable electronic system (PES), which offers protection to SIL3.

It will interface with nine legacy alarm systems (each with up to 120 alarms) around the refinery and a workstation for displaying the status of each alarm.

The system also includes dedicated workstations for use in the refinery’s two independent process streams.

Himax employs Hima’s XMR architecture, where the ‘MR’ stands for modular redundancy and the ‘X’ denotes that it can run with up to four central processor units (CPUs), as opposed to fixed triple or quadruple modular redundancy (TMR and QMR respectively).

In addition, each CPU is dual (1002D) processor-based, so the system can still operate at SIL3 with a single CPU.

Each I/O module within Himax also has its own set of microprocessors, giving it the integrity and diagnostic capabilities to meet SIL3 requirements; and the testing at I/O-level releases the capacity of the main CPUs, allowing faster and larger systems to be achieved.

In addition, Himax has virtually unlimited expansion potential, according to Hima-Sella.

Eddy Turnock, sales and marketing director at Hima-Sella, said: ‘The high-integrity alarm system we are building for the refinery will provide non-stop operation and greater levels of redundancy and fault tolerance than the system it replaces.

‘Also, the addition of the workstations in the process trains makes for a far better fit to the refinery’s operational requirements,’ he added.

Hima-Sella is an independent designer and supplier of integrated safety-critical control and automation systems and specialises in delivering the following:

  • Burner Management (BMS)
  • Control & Instrumentation Panels & Desks
  • Customer Information Systems (CIS)
  • Data Logging
  • Distributed Control (DCS)
  • Emergency Shutdown (ESD)
  • Fail-safe Radio Remote Control
  • Fire & Gas Detection
  • High Integrity Pressure Protection (HIPPS)
  • Interface Cabinets
  • Marshalling Cabinets
  • Panel Build
  • Plant Mimics & Displays including large TFT LCD screens
  • Programmable Logic Controllers (PLC)
  • Programmable Electronic Systems (PES)
  • Telemetry Services includes Consultancy; Project Management; Design; Engineering; Manufacturing; Testing; Commissioning; Technical Support; Customised Training. Industries include Oil & Gas; Nuclear; Petrochemical; Steel; Transport; Defence and Chemical.

In 2001, Hima-Sella was awarded the first ever CASS certificate (CASS00001), from SIRA, for compliance with IEC61508 Functional Safety Management and our Quality Management System has been approved to BS EN ISO 9000 since 1989.

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