Criticality

The criticality of equipment failure is directly related to the severity of the associated functional failure to overall enterprise goals. The contribution that any equipment makes to those goals is dependent on the enterprise roles at the time, suggesting equipment criticality is a variable dependent on role. Our modelling of material state (qv) takes this into account by close integration with Goalscape proprietary software for which we are an approved Affiliate Partner. Find out more

Goalscape modelling shares some of the aspects of mindmapping, in that relationships between nodes are clearly defined; however, mindmapping does not immediately show the relative importance of sibling nodes to each other, nor to the parent node. Goalscape allows these relationships to be defined in both qualitative and quantitative terms and exposes the priorities on resources needed to achieve enterprise objectives.

To illustrate this functionality the screenshots below describe differing states of a raw sugar factory which apart from processing cane sugar approximately 5 months of the year also provides electrical power to the associated workforce township all the year round. The Goalscape model shows the differing criticality of key elements of the factory operation during the cane crushing season, post-crushing but pre-annual shutdown and the out-of-crop season.

This represents the elements of the sugar factory during the crushing season, when all components are required.

Segment size is related to the importance that each element has with respect to its parent node. Any full or partial failure of contributory components to the whole enterprise can be expressed and their criticality to this phase of the factory operation can then be quantified. Numerical values of such criticality can then be compared with enterprise norms.

In this example, since power is generated principally by steam turboalternators, a partial failure of the diesel generators (the degree of 'white' in the DG sector) has relatively little impact on the overall business (in the centre) - about 2%.

This screenshot represents the relative contribution that parts of the sugar factory make to the enterprise during the out-of-crop season but pre-annual shutdown, when there is still a requirement to pack sugar into standard packages, to store these as necessary and to meet other material handling requirements. The need to provide electrical power remains, but in this case power is supplied exclusively by diesel generators and their associated support services.

In this case a similar degradation in diesel generator capacity has a proportionately greater effect on the overall business - in this case about 7%.

 

 

This screenshot represents the functional requirements of the sugar factory during the annual shutdown. There is a continuing requirement to supply electrical power (again, using diesel generators) and a reduced requirement to pack and store sugar.

In this case the same degradation in diesel generator capacity has a noticeably greater effect on overall operations - nearly 20%.

 

 

 
   

© 2014 Steven Consultants Ltd

Site last updated June 2014