Functional Safety for the Process Industry.
Helping the process industry cost-effectively implement the requirements for safety and security standards.
To improve plant process safety, functional safety systems enable the orderly shutdown of processing units when abnormal situations occur that are beyond the capabilities of the regulatory control system or operators to correct or to prevent a catastrophe.
exida makes implementation of safety and high availability automation products easier and more cost effective than ever.
Users now have the ability to use procedures and tools that were written by industry authorities for a fraction of the cost of having them internally developed, and without having to go through the effort of having core staff trained to become safety and reliability experts. This lets you and your staff focus on your core tasks.
The lifecycle is a series of phases from initiation and specifications of safety requirements, covering design and development of safety features in a safety-critical system, and ending in decommissioning of that system. exida provides initial guidance on performing key facets of the lifecycle, providing specific services for individual tasks within each lifecycle phase.
| Safety Lifecycle Stage | Tasks | Supporting Services | Supporting Tools |
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Analysis |
Hazard & Risk Analysis |
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Consequence Analysis |
Consequence Analysis |
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Identification of protection layers |
LOPA (Facilitation) |
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Likelihood analysis |
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SIF identification |
SIF Assessment |
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Target risk reduction factor assigned for each SIF |
SIL Target Selection |
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Develop Process Safety Requirements Specification |
Process SRS Development |
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Functional Safety Assessment 1 |
Functional Safety Assessment 1 |
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Design |
SIF conceptual design: |
SIF definition |
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Equipment justification report |
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Proof Test definition |
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SIL Verification |
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Develop Design Safety Requirements Specification |
Design SRS Development |
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C&E Diagram Development |
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Functional Safety Assessment 2 |
Functional Safety Assessment 2 |
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Implementation |
Detailed design |
Safety PLC logic generation |
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Develop Inspection and Test Procedures |
Finalize Proof Test Requirements |
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FAT test plan development |
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Factory Acceptance Test |
FAT witnessing |
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SIS Installation & Commissioning |
Commissioning test witnessing |
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SIS Safety Validation |
Validation Test requirements |
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Cyber Security Audit |
Cybersecurity assessment |
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Functional Safety Assessment 3 |
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Operation and Maintenance |
Proof testing |
Proof Test Requirements |
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Test result evaluation |
Failure data analysis |
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Prior Use justification |
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Functional Safety Assessment 4 |
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Management of Change |
Impact Analysis |
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Functional Safety Assessment 5 |
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SIS Decommissioning |
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