Reliabilty Filter

Bullant Filters - Reliability Filter

The Reliability Filter is used to establish the running efficiencies for each possible running configuration of a line. It is based on information from the Capacity Filter.

Running efficiencies defined by the the Reliability Filter are then fed back into the Demand Filter so that total line running times can be confirmed.

There are 4 techniques that can be deployed as part of the Reliability Filter;

Dynamic Modelling

We use dynamic modelling to demonstrate how the performance of the Drum on a flow line is effected by the performance of upstream and downstream equipment and buffers.

Attainment Sampling

Historical downtime data is used to understand current performance of different workstations in a flow line.

Criticality Assessment

We use the term stability as well as reliability to recognise that there are often points of local choas in high-change, high technology processing lines. This is where (what Edwards Deming called) "special-cause or attributable-cause variation" remains hidden, immune to broad-based continuous improvement initiatives that focus on "common-cause variation".

The Reliability Filter uses a Criticality Assessment tool to establish the points of instability in a line. Points of instability are those parts of a production line where repeatable operation cannot be guaranteed and where normal reliability techniques are almost impossible to apply.

Stability Mapping

A stability map is used to visual represent the points of instability on a flow line.

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