Combination of Unwanted Occurrences in a System

C.

Fault tree analysis (FIA) is a technique that provides a systematic description of the combination of possible occurrences in a system, which can result in an undesirable outcome.

It combines hardware failures and human failures.

Incorrect Answers: A: Sensitivity analysis is the quantitative risk analysis technique that: Assist in determination of risk factors that have the most potential impact Examines the extent to which the uncertainty of each element affects the object under consideration when all other uncertain elements are held at their baseline values B: This analysis provides ability to see a range of values across several scenarios to identify risk in specific situation.

It provides ability to identify those inputs which will provide the greatest level of uncertainty.

D: Cause-and-effect analysis involves the use of predictive or diagnostic analytical tool for exploring the root causes or factors that contribute to positive or negative effects or outcomes.

These tools also help in identifying potential risk.

The technique that provides a systematic description of the combination of unwanted occurrences in a system is called Fault Tree Analysis (FTA).

FTA is a deductive technique used to identify the various events that could lead to an undesired outcome, such as a system failure. The technique is based on the concept of a fault tree, which is a graphical representation of the logical relationships between the events that could cause the undesired outcome.

In FTA, the undesired outcome is represented at the top of the fault tree, and the events that could lead to the undesired outcome are represented as branches below it. Each branch represents a different combination of events that could cause the undesired outcome, and the logical relationships between the events are shown using logical operators, such as AND and OR.

FTA helps identify the potential causes of a system failure and provides a way to quantify the likelihood of the failure occurring. It can be used to identify the critical components of a system and to evaluate the effectiveness of existing risk mitigation measures.

Sensitivity analysis, scenario analysis, and cause and effect analysis are other risk assessment techniques, but they are not specifically designed to provide a systematic description of the combination of unwanted occurrences in a system. Sensitivity analysis is used to evaluate the sensitivity of a system's output to changes in its input parameters. Scenario analysis involves the development of a range of plausible scenarios and the analysis of the potential impact of each scenario on the system. Cause and effect analysis is a technique used to identify the root cause of a problem by analyzing the relationships between various factors.