Fault tree map generation

A method for Fault Tree Map generation, with a computer, for a technical system or installation, using as basis the technical system/equipment or installation Fault Tree diagram and comprising:

• substitution of the all logical Gates by adequate symbols, which graphically define the Gate type and content the Gate identification Code;
• exclusion of the Gate description;
• when on the report generation stage, inclusion the numbers of pages, where the logical Gate is placed;
• substitution of the all evident failures by adequate symbols, which graphically define the failure type;
• substitution of the all latent failures by adequate symbols (different than evident failure symbols), which graphically define the failure type;
• substitution of the other types of failures by adequate different symbols, which graphically define the failure types;
• exclusion of the all evident/latent/other failures description, that permits drastically compact the conventional Fault Tree depiction and facilitates performing of the Fault Tree qualitative analysis including evaluation of combination of latent failures and evident failures, and failure propagation potentiality, besides facility of localization of each Fault Tree logical Gate and relevant failures in the fault tree printed report.

A method of processing a fault tree comprising:

• (a) analyzing the fault tree to determine latent failures and repeated events;
• (b) automatically, with a computer, generating a map of said fault tree, said map graphically indicating evident event type with a first connector symbol and indicating events with exposure time in excess of a predetermined duration with a second connector symbol different from said first connector symbol;
• and
• (c) graphically presenting said map.