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Essay On Hazard Analysis

800 Words4 Pages

Hazard Analysis: Hazard analysis is an important factor associated with any type of software critical systems. Many times, even some minor neglected errors can lead the system to hazardous situations. However, some situations can be made under control but it’s not the same case every time. In our system, we have classified the conditions into two types, either controllable or non-controllable. The most important mechanism for improving the safety of a system is to identify the hazard state of the system as it has the potential to cause an unexpected, unplanned or undesired event or a series of events. Hazard occurring in a system may result in an injury, illness, loss to living beings or harmful impact on the environment the most common …show more content…

Controllable System is continuously monitoring the dosage. If it goes high, it will alert immediately. Injection of less quantity of insulin or glucagon hormones due to low availability. Controllable System will alert as the quantity goes down the Refill bar. Loss of the patient’s data history due to software malfunction. Uncontrollable The scenario cannot be controlled as the system won’t have information about amount of dosage. Insertion of a different hormone than the actual required one. Controllable System will alert as soon as a different hormone system is implemented. Input of wrong information in manual operational mode. Uncontrollable There is no immediate method to control the scenario. Misuse of credentials Uncontrollable Life threatening damages can occur as there is no way to control the situation. Fault tolerance: Error detection is an essential component of fault tolerance. Errors can be solved by offending component, alternative means of computation or by raising an exception. Fault tolerance is implemented by error detection as well as subsequent system recovery. Recovery includes error handling and fault handling. Fault handling consists of four steps: fault diagnosis, fault isolation, system reconfiguration as well as system reinitialization. Using sufficient redundancy might allow recovery without explicit error detection [2]. Physical faults are usually considered

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