The LOPA study provides a more consistent approach to Safety Integrity Level (SIL) Assessment. Independent Protection Layers are identified, that may provide risk reduction and can accurately define the performance requirements of the Safety Instrumented Function.
LOPA is a quantitative risk assessment process providing a Target Probability of Failure on Demand (PFD), which is associated with the Integrity Level requirements (SIL) as per IEC 61511.
This activity is referred to as SIL Determination or SIL Assessment because the performance requirements of a safety function is expressed as a Safety Integrity Level (SIL) as per the requirements of IEC 61508 / IEC 61511.
Elite Technical Consulting provides procedures and tools to facilitate SIL Study and offers expert advice on safety functions that are difficult to analyse. We deliver a comprehensive report detailing every aspect of the SIL determination workshop. Our experienced LOPA Facilitators have well rounded expertise in facilitating Deterministic SIL Workshops and our scribes are proficient in using popular Software packages such as PHA Pro, ExSILentia and bespoke spreadsheet based tools to record LOPA Assessments.