【2026 Interlocking System】Requirements for the time to release safety interlocks

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In high-risk industries such as petrochemicals, power generation, and metallurgy, safety interlock systems serve as the core barrier for \"inherent safety\" – when process parameters exceed safe thresholds, these systems can bring the production process to a safe stop or automatically shift it into a predetermined safe state by cutting off materials, activating cooling systems, or initiating pressure relief measures, thereby preventing accidents or mitigating their consequences. However, due to process adjustments, equipment maintenance, calibration, or temporary failures, it is necessary to disconnect specific interlock circuits in the instrument system for a short or long period of time (i.e., \"interlock deactivation\"). This period is a critical stage in the safety management of installations; the slightest carelessness can lead to catastrophic consequences.