# Conditional Probability of Failure

## Definition - What does Conditional Probability of Failure mean?

Conditional probability of failure is the probability that a specific item, such as a piece of equipment, material or system fails at a certain time interval. This is with the condition that the item has not yet failed at the current time.

This probability is calculated in order to determine the likelihood of hazard in a particular setting. It is best represented by a graph that represents the curve of the hazard rate.

## Corrosionpedia explains Conditional Probability of Failure

The conditional probability of failure is highly beneficial in the field of reliability engineering. This is where the lifecycle management and dependability of products are analyzed. By having a measure of reliability, predicting the ability of components to function at stated time periods and environments can be easier and more efficient.

This probability describes the failure frequency in terms of maintainability, availability and reliability, which plays a vital role in achieving cost effectiveness. This also helps promote safety of a system. Additionally, other areas such as failure costs resulting from repairs, spares, warranty claims and system downtime can be identified beforehand and prevented.

By having an idea about the probability of failure, reducing the rate of failure is highly possible. This can be gained over time, as earlier failures are corrected or eradicated. This can be applied in various fields such as in aeronautics or spacecraft engineering, where failure rates can significantly affect spacecraft lifetimes. Thus, engineers and operators should take this measure into consideration to preserve and prolong the lifespan of resources.

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