LOPA is an effective tool for Semi-quantitative analyzing the protection layers of a system and the level of residual risk associated with a process. This study uses the analyses previously performed in HAZOP-type studies to evaluate causes that present non-tolerable risks and complements them by incorporating the frequency of occurrence of initiating events, the independence and failure frequency of protection layers, and other additional modifiers.

Pryxida TECH offers a workshop execution method that takes into account the experience of participants, modifier databases, and best practices in order to develop the study efficiently and effectively. Our objective is to provide the client with an analysis and recommendations that lead to the reduction of the residual risk level to tolerable values.

Likewise, we seek for the results obtained from the LOPA to allow verification of the Safety Integrity Level (SIL) required by Safety Instrumented Systems (SIS) and to ensure an integrated analysis of the system’s safety level.