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© ABB
| Slide 12
The Operational Strategy
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Managing of three key requirements
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Modifying the system to change, add or remove safety functionality
dependent on operating requirements for existing plant, new plant,
decommissioning, etc.
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Maintaining the system to the ‘as new condition’ including performing
proof tests, recommended maintenance and repairs
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Applying items 1&2 above to plant operating life expectancy
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Application of MOC processes
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Impact & gap assessments completed (end user and SIS system level)
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Documentation is updated and maintained as valid
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Basis of safety is periodically assessed i.e. every 3-5 years
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Identification of appropriate Techniques and Measures
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Competency assessment
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Requirements for Authors, Reviewers and Approvers