Bowtie Builder

Setting up bowties quickly and effectively

Drawing a bowtie can be done pretty fast. Then, to determine the contribution of the various chains within the bowtie on the business values is some more work. Then you need to calculate the effect of the mitigation measures on probability of occurrence of elements in the chain, which in turn are related to elements after these the chain ...... The overview can be lost easily, let alone when consideration is given to other mitigation  measures. In order to determine again what the contribution can be very time consuming. To support this we have developed Bowtie Builder.


Benefits of Bowtie Builder

  • Supports ISO compliant processes (eg ISO 31000, 9001 and 14001)
  • Provides specific input on requirements of ISO55000, NTA8120 and ISO224
  • Open data using standard Excel format. Data can be edited after export in standard Excel application
  • Results can be applied in Risk Processor suite
  • Integratable in a company wide solution (Enterprise Risk Management - ERM)
  • Can be delivered as part of our regular consulting services (if agreed upon)
  • Defined as output in our process register and asset management reference manual
  • No annual licence costs




  • Standard definition of two top events
  • Two bowtis per top event
  • Up to 24 underlying causes
  • Up to two sequential, interdependent parts of the chain between the underlying cause and top event. Of these 24 may be used in parallel 
  • Up to three sequential, interdependent parts of the chain between the top event and consequences (impact on business values). Of these 24 may be used in parallel
  • Up to 24 business values ​​on which parts of the chain have impact
  • In the chain it can be indicated what mitigation measures and conditions are applicable, and the influence on the respective chain component. For each part of the chain one existing control measure and one condition can be linked
  • Additional mitigation measures. One per chain element
  • In the analysis it can be indicated if a mitigation measure should be active or not, complemented by effectiveness
  • Determination of likelihood of dominant chain components for five consequence categories. This per top event and per bowtie



See our question and answer sections. If you want more information, please contact us.


Nederlands English Duits

P.O. Box 30113
8003 CC Zwolle
The Netherlands
+31 6 - 30 18 68 94
VAT NL8231.48.919.B01