Honeywell completes R1,25 m instrumentation order
December 2002
News
Honeywell has completed a R1,25m order for the supply of pressure and temperature transmitters for the SRU4 (sulphur recovery unit) at the Sapref Crude Oil refinery in Durban. The order comprised 130 differential pressure transmitters, 45 gauge pressure transmitters, 80 temperature transmitters and 20 smart local indicators.
Honeywell's Colin Wagner says the transmitters are used to measure and transmit the pressures, differential pressures and temperatures back to an existing Honeywell TDC3000 DCS (distributed control system), which controls the entire plant, in order to control the process and monitor where control is not required.
"The transmitters have proved to be very reliable and an added benefit is that they could be integrated digitally into the Honeywell DCS using the Honeywell DE protocol," he says. Pressure and temperature transmitters being used in this application are Honeywell Series 100 and 900 transmitters. The entire project was implemented using two Honeywell products for control and safeguarding.
The plant process control is implemented on a Honeywell TDC3000-based high performance process manager (HPM) linked to other process units via a 64-node LCN and controlled from a central control room where the entire refinery is controlled from the Honeywell TDC3000 system.
The safeguarding of the units is ensured by a Honeywell FSC system with safety manager modules allowing full integration into the universal control network from where the rest of the process control is implemented. This gives the added advantage of being able to integrate safeguarding actions with plant automation and preventative actions by communicating events between the two systems. Further simplification of the sequence of events is accomplished by presenting the operator with an integrated view of events on a single control system reflecting both process control and safeguarding events.
The process control design, based on a Shell system, and implementation software was designed and implemented by on site Honeywell engineers working with the managing contract company. Process control systems, human machine interface (HMI), safeguarding systems and system integrations were all developed on-site and implemented on an offline system for testing purposes before being implemented on live equipment. The entire project stretched over a two-year period with an intensified final four months to implement all existing plant changes including relocation of entire process units and utility systems during an 18 day shutdown period.
For more information contact Mike Littlejohn, Honeywell Southern Africa, 011 805 1201, [email protected], www.honeywell.co.za
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