A RISK-BASED APPROACH TO PRE-STARTUP SAFETY REVIEW

GUIDELINES FOR PERFORMING EFFECTIVE PRE-STARTUP SAFETY REVIEWS 

There are several levels of risk analysis within most methodologies for assessing risk quantitative, semi-quantitative, and qualitative. For PSSR concerns we deal almost exclusively with qualitative assessments, that is, just a determination of high or low risk. Generally any truly quantitative risk analysis (QRA) indicated for a trigger event would be performed to enhance the process hazard analysis. The associated PSSR for such a trigger event would simply follow action item progress related to the quantitative risk assessment s action items. In this case the PSSR helps assure that any action items from a QRA are appropriately followed. 

Once we have decided that a PSSR is needed to meet our facility s requirements, there are actually three points in the decision making processes for PSSRs where risk-based applications can apply. 

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Detailed examples for your PSM manager and PSSR team leaders to consider are provided in Chapter 4 - A Risk-based Approach to Pre-startup Safety Review and throughout the book. 

CHAPTER 4 - A Risk-based Approach to Pre-startup Safety Review... 

This book introduces the basics of applying a risk-based approach to pre-startup safety review. Specific aspects of trigger events may be examined for selecting the type of PSSR suitable for a given event. 

A RISK BASED APPROACH TO PRE-STARTUP SAFETY REVIEW... 

Here is where the risk-based approach necessitates a first look at the nature of the trigger event. By following some of the guidelines in Chapter 4, the type of PSSR to design is relatively easily divided into simple or complex - that is, a short form or a long form respectively. However, when the PSSR long form is indicated, there are numerous decisions to make about the pre-startup safety review s needs. 

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