This case study will present the methods that were used to calculate qualitative risk for a critical refrigeration system and the results of the assessment. This presentation is intended to demonstrate how Qualitative Risk Assessment can be a cost-effective and resource-efficient means to prioritize equipment often under the radar.
This assessment was performed to scope a capital, reliability investment by focusing the inspections, improvements and repairs to ensure reliable future operation.
Probability was assessed using simple hoop stress, historical and expected corrosion rates and also accounted for unique damage mechanisms.
Consequence was tabulated on Safety, Environmental and Operational factors based on Site SME review and assignment.
A non-standard risk matrix was developed based on the needs of the site.
