Definition

a feature is any abstract or concrete entity of the system, significant to the system prospect.

Types

According to the value of the feature, we define:

• User feature is a feature significant to the user, who is concerned about the system outcome (information, products, ...)
• Control feature is a feature significant to the operator, who is concerned about controlling the system.

Definition

A resilience feature is a feature included in the system design, intended to support its resilience.

Typical resilience features:

Fault prevention

• Automation enables preventing human-related faults, in performing tasks that require fast computations.
• State indicators enable the operator's orientation, and reduce the chance for errors .
• Special gates enable detection and rejection of operators faults (slips and mistakes),

Fault detection

• A special unit, rules applying to the functional unit
• Sensors are required to capture extreme values of operational parameters, such as temperature
• Special alarms and fault indicators are required to notify the operators about exceptional situations
• Special algorithms and simulators are required for early fault recognition.

Exception management

• A special station, Recovery station, enables safe operation under hazards .

Emergency operation

• A special station, Rescue station, enables safe operation under threats.

Updated on 22 Sep 2016.