SIS Safety Validation

Customer Challenges

To ensure that there is an independent validation of the complete safety life cycle process of delivering Safety Instrumented Systems (Pipe-to-pipe) to meet regulatory, customer and insurance requirements. Determining the best-in-class safety organization who can provide independent safety services for this validation process.

Our Solution

Yokogawa Functional Safety Experts determine through the validation process that the commissioned SIS and its associated SIF(s) achieve the requirements as stated in the SRS.
The 1st validation of the SIS is at the end of the realization phase (IEC61511 Phase 4). The 2nd validation is after the installation and commissioning of the SIS (IEC61511: Phase 5). This is the overall Validation and is part of the Pre-Start up Safety Review (PSSR).
During the validation process, if the SIS does not meet the Safety Requirements, Yokogawa experts will investigate options and advise the best course of action to take to reach a resolution for all issues discovered.

Yokogawa Validation is achieved by at least:

• Having independent safety experts from our international network.
• Validate the test of the (part of the) SIS against the specifications and the SRS.
• Check if deliverables, documentation and application, are complete and up to date.
• Provide an independent report of the validation results.

Customer Benefits

Partnering with a trusted and experienced international team of Functional Safety Experts providing validation (independent of the brands used for field equipment and logic solver) of the Safety Instrumented Systems delivered meeting all Project and Safety requirements before the plant becomes operational.