Triple Modular Redundancy (TMR) architectures with 2-out-of-3 (2oo3) voting are designed to tolerate a single hardware fault without interrupting processes. However, an unexpected Gas Turbine Generator (GTG) trip occurred when only one of three safety controllers failed. This case study analyzes the event, demonstrating the critical distinction between fault tolerance and fail-safe behavior when safety integrity is compromised.
You can ask
anything about maintenance, reliability, and asset management.
