The LOGAN Monte Carlo Simulation package is designed to assess process availability. The system simulates both binary systems (working/not working) and systems capable of operating at various levels of production. The system has the following main features:

• Full Microsoft Windows™ operation (compatible with Microsoft Windows™ 95/98/Me/XP/NT/2000)
• Assessment of the availability of logic systems (failure/success), production availability of analogue systems with degraded levels of operation and mixed systems (e.g. services as logic, production line as analogue)
• Import/Export logic model from RMC’s LOGAN Fault Tree module
• Choice of on screen editor: Reliability Block Diagram format or LOGAN success logic diagram format
• Output in graphical or tabular formats with statistical analysis of results
• Multi–page RBDs or logic diagrams
• Facility to animate the simulation, helping users to better visualise and understand the process being modelled
• Models:
  • effect of limited spares holdings and spares re-order times
  • effect of limited repair resources
  • duty/standby arrangements
  • majority vote logic
  • revealed failures
  • unrevealed failures and proof testing
  • effect of batch deliveries of raw materials, batch take-offs of product and limited buffer storage
  • time dependent failure probabilities using Weibull distribution
  • MTBF and MTTR probability distributions including normal, lognormal, rectangular, fixed, etc.

RMC recognises that many simulation problems have unique aspects often not covered by a general-purpose model. The system can therefore easily be modified to incorporate custom features.