Free BOWTIE software.

HAREC is a free hazard recording system for BOWTIE analysis and hazard identification. Threats, barriers, top event, consequences.

A BOWTIE diagram produced by HAREC: threats on the left, each running through a chain of preventive barriers into the central top event, with mitigative barriers and consequences to the right.

A BOWTIE diagram rendered by HAREC — threats and preventive barriers on the left, the top event at the centre, mitigative barriers and consequences on the right.

What a BOWTIE diagram holds.

LeftThreats
LeftPreventive barriers
CentreTop event
RightMitigative barriers
RightConsequences