Supply Manufacturing – Global Safety Instrumented System (SIS)
Throughout the global chemicals industry, the Safety Instrumented System (SIS) plays an essential role in managing key risk scenarios, it could serve as either preventative or mitigated independent layer of protection (IPL). The discipline of functional safety keeps evolving and advancing in terms of both methodology and technology.
One of the key reference methodology for managing SIS over their lifecycle, from risk assessment, design, operations, maintenance through decommissioning are widely recognized IEC 61508 and IEC 61511 international standards. By leveraging company Corporate System, the majority of generic SIS management activities are addressed in response to IEC requirements. However, under specific clauses, for instance, SIS safety life cycle activities of functional safety assessment, SIS validation and verification, SIS configuration management, etc., require supplemental manuals/procedures for the guidance.
Global SIS Program is intended to deliver a SIS Technical Framework consistent with company standard practice and industry requirements to Infineum Manufacturing Plants. The Program will further identify functional requirements to implement and maintain the technical framework.
Case for action
Key business cases which drive the creation of the Program are the following:
- Safety – Improve process risk management in Infineum plants by implementing and operating SIS in an effective manner.
- Compliance – With regulatory requirements, local standards or generally accepted and recognized engineering good practice (GAREGP) in different countries, close gaps between existing systems and the company standard practice for safety instrumented systems.
- Consistency – Drive the consistency of the implementation of SIS activities by global SIS technical framework – Functional Safety Management Plan (FSMP)
Program Objective
The objective of the Program is to
- Develop a consistent approach to SIS identification, design, installation, operation and maintenance through decommissioning.
- Facilitate the Infineum sites to deploy the robust functional safety management system.
- Build the internal competencies and streamline the workflow of implementation of SIS.
Eventually, it will ensure that SIS assets at each Infineum site are properly designed and realized, then achieve the intended levels of risk reduction throughout their operating life.
An attainable Global SIS technical framework is developed with guidance and best practice which incorporate the requirements of relevant corporate system and standard of practice, and IEC standards