The Triple Modular Redundant (TMR) technology widely used today in certified safety system applications was originally invented by August Systems (founded in 1978). August Systems was the first to prove that three microprocessors could carry out a single valid control action. This development effort was a result of the NASA space program in the United States.
The original application of the TMR technology was in Critical Control and Safeguarding systems. This technology was later applied to Emergency Shutdown Systems (ESD) and Fire & Gas Systems (F&G) in the Oil and Gas, Refining and Petrochemical Industries.
The Triguard TMR product has over 1,000 major systems installed worldwide with over 10,000,000 operational hours. ABB purchased August Systems in 1997. Our latest product offerings include ABB Plantguard, an Industrial IT enabled TMR system.