Identify Functional Safety Life Cycle Requirements

The safety and availability of your industrial plant is a top priority for you. When a new plant is built, safety instrumented systems (SIS) are designed and commissioned by safety specialists. During the course of their life cycle, every upgrade or modification requires a review of functional safety with regard to the applicable standards and norms, e.g. IEC61511 Ed. 2. The current status of a plant in terms of safety is not always well documented. Each plant operator is responsible for ensuring that the SIS meets the safety requirements. How can this be remedied if there is a lack of time and resources?