LOPA Risk Assessment “By the Numbers”

Guest blog by David Hatch from Process Safety Integrity As BowtieXP users become more proficient in model development (often guided by the CCPS/EI concept book which includes significant contributions from CGE) they wish to exploit enhanced functionality to provide more accurate risk assessments to inform their decision making. Adding value to qualitative risk assessment (matrices) [...]

A performance-based approach to safety at large events in public spaces: from risk to scenario assessment

Guest blog by Luca Fiorentini, from TECSA S.r.l. Managing the crowd at large events in public spaces is a difficult task. Prescriptive approaches are not suitable while partial performance and risk-based regulations (at a national and local level) revealed to be ineffective. Tragic recent events have demonstrated this (e.g. the Piazza San Carlo crowd incident [...]


ISO 31000 blog series – Recording and reporting

Having walked through the previous ISO 31000 steps, we now come to the “Recording and Reporting” step. Recording is about recording information in a risk register, so that this information can then be reported to decision-makers. In a sense this is what the bowtie does best – it records risks which can then be reported [...]


CHASE – Visualizing cyber security vulnerabilities using bowties

Guest blog by David Hatch from Process Safety Integrity Hazards 29 is Europe’s leading process safety forum. At this year’s event, industry expert Andy Geddes and CGE Partner David Hatch from Process Safety Integrity presented their new CHASE concept. Their work has developed a practical methodology for Computer Hazard And Security Evaluation. You can't defend [...]