PASAR
Sulfuric Acid Plant PCS7 Software Upgrade and Optimisation
- Leyte, Philipines
- Acid Plant Control Upgrade
- Siemens PCS 7 V8.0
The PASAR Acid Plant was identified as the main constraint to the smelter reaching production targets. The scope of this project was to re-engineer the existing PCS7 system to provide world standard operator tools in conjunction with optimised automatic control to maximise production throughput.
Project scope
- Development of a functional description for the Acid Plant incorporating tailored process control strategies and new logic
- Development of new plant software standards and HMI graphics
- Complete rework of all existing logic
- Alarm minimization embedded into new logic
- Site installation and testing of software within 4-week shutdown period
- Plant optimisation post startup
- Training
Project highlights
- Improved SO3 Converter temperature control resulted in significant improvement in acid plant throughput and allowed increased smelter feed-rates
- Interlock and trip diagnostics implemented consistently
- Alarms rationalized to vastly reduce alarm rate and improve operability
- Strong Operator acceptance of new HMI graphics developed using ASM principles.
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