SMRP BoK Review Workbook

Equipment Maintenance Plan

Failure Reporting, Analysis and Corrective Action System (FRACAS)

A managed system for continuous improvement for asset reliability.

Reliability Failure Distribution

▪ Exponential

distribution is

used to describe

the reliability of a

component or

equipment on the

flat portion of

failure pattern

▪ Provides a percentage of probability that the equipment will operate

without failure during a specified period of time

▪ Different models can be used to determine reliability failure

distribution

O Weibull if quality life data is available

Weibull Analysis

A statistical analysis used to determine the

pattern of failure that a specific component

experiences for a specified failure mod; an

analysis based on life data.

Provides an accurate assessment of the

characteristic life of the component for the

same failure mode.

Each of the failure patterns are

represented by a parameter

known in the literature as the

beta value (β).

Beta = Shape

Eta = scale - characteristic life: Time at which

approximately 63.2% of failures occur

Requires age-to-failure data!