CBM Optimization – Complex items

An item is a group of components that is convenient to monitor and analyze together

Equipment units, as defined in the CMMS asset register are, in general, well defined items.

A complex item is an item with more than one significant failure mode.

EXAKT data model

Inspections

IdentDateWorkingAgeCovariate1NameCovariate2Name….Comment

Events

IdentDateWorkingAgeEventComment

EventsDescription

EventNamePrecedenceComment

VarDescription

VariableNameMeasureUnitWarnLimit1WarnLimit2…Comment

CovariatesOnEvent

EventStartingDateEndingDateCovariate1NameCovariate2Name…Comment

IdentToModel

ModelNameIdentNameDate

EventToModel

ModelNameInputEventNameOutputEventNameInputPOutputP

VarToModel

ModelNameInputVariableNameOutputVariableNameVariableDataTypeMeasureUnitWarnLimit1WarnLimt2...

These are data mapping tables. They enable the analysis of complex items and are automatically populated by EXAKT in the mapping procedure to be discussed in Slide 5

Attach external database(s) to the analysis

General project data

Data mapping of the first failure mode on Gearbox A

Build the proportional hazard model

Age not significant. So fix shape parameter to one.

Final model – reliability is age independent

Transition and Decision models

Cost function

Decisions

Creating the DMDR database

Attach the DMDR database tables

Store decision model

EXAKT for decisions

Attach DMDR tables

Create a report list and run the models

Graphics

Replacement Decision Failure Risk

Conditional Distribution Function

Conditional Density Function

All Units report