Safety Integrity Level (SIL)

Address: Mountain Drive, Varick Str, UK
Certified: ISO 9001: 2010

The purpose of a SIL Assessment (or determination) study is to establish the level of risk reduction required for a Safety Instrumented System (SIS) to reduce risks from identified process hazards (including explosion, toxic exposure, loss of containment, etc.) to as low as reasonably practicable (ALARP). The functional output of a SIL Assessment study is to assign each Safety Instrumented Function (SIF) a performance target or Safety Integrity Level (SIL) which can then dictate the design of the SIF to be installed with regards to its reliability.

This SIL determination study will serve as a basis of the design and specification of all SIS and associatedSIF. Design of the SIS and associated SIF for the assigned SIL levels will be confirmed through SIL verification study in compliance with IEC 61511/61508.

Effective HAZOP-SIL (LOPA) Workshops

Though all the four methods, viz., Risk Graph, Internal Risk Matrix, External Risk Matrix and Layers of Protection Analysis (LOPA), suggested in IEC 61508 establishes target SIL, LOPA is widely used due to itsrigorous semi-quantitative approach. Application of LOPA method requires in-depth knowledge of facilities operation, engineering, and consulting domains to get realistic outcome from the SIL workshop. Also, the success of SIL Workshop depends on quality of HAZOP, hence we put significant amount of effort in HAZOP prep-works and conducting HAZOP analysis thoroughly. We have proven history in conducting back-to-back HAZOP-SIL (LOPA) sessions for consistency and optimal efforts/schedule by using data mirroring technique.

Aniva can support major and complex projects in conducting an integrated HAZOP-SIL (LOPA) workshops in very efficient and technically comprehensive manner.

What Planning Process Needs?

11 Oct, 2020
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Safety Integrity Level (SIL)