häiretingimus

Häiretingimus is a term used in Estonian engineering and safety contexts to describe a defined state in which a system operates abnormally or is experiencing a fault. When a häiretingimus is active, it typically signals risk to operation, safety, or reliability and prompts protective actions, alarms, or maintenance procedures.

Definition and scope

A häiretingimus indicates that a parameter or set of parameters has deviated from normal operating ranges in a manner that warrants attention, but it is not necessarily equivalent to a complete failure. It is usually specified by measurable thresholds, permissible ranges, required dwell times, and sometimes hysteresis to prevent oscillations between states. The condition guides when to alert operators, log events, or engage safety interlocks.

Detection and response

Häiretingimus is detected through monitoring systems, diagnostics, or self-tests that compare real-time data against predefined criteria. Upon activation, it may trigger alarms, automatic protective actions (such as shutdown or isolation), maintenance workflows, and data logging. Recovery generally requires the parameter to return within normal limits or for authorized intervention to restore proper operation.

Domains and examples

Common domains include industrial automation, electrical power systems, transportation, and medical devices. Examples include motor temperature exceeding a safe threshold, voltage or frequency excursions outside acceptable ranges, or a software service showing persistent high error rates. In each case, the häiretingimus informs operators and systems to take timely and appropriate action.

See also

Alarm condition, fault condition, trip condition, safety interlock. In practice, häiretingimus is closely related to concepts in reliability engineering and safety case documentation.