Task Descriptor: Assess PA 4.2 Process control attribute according to the Generic Practices for PA 4.2

The previously described Established process now operates within defined limits to achieve its process outcomes. This performance attribute is part of the Level 4 capability dimension of Predictable Process.

Based on Method Task: Assess PA 4.2 Process control attribute according to the Generic Practices for PA 4.2

The process control attribute is a measure of the extent to which the process is quantitatively managed to produce a process that is stable, capable, and predictable within defined limits. As a result of full achievement of this attribute:

a) suitable analysis and control techniques where applicable, are determined and applied;

b) control limits of variation are established for normal process performance;

c) measurement data are analysed for special causes of variation;

d) corrective actions are taken to address special causes of variation;

e) control limits are re-established(as necessary)following corrective action.

Generic Resources for PA 4.2

Process control and analysis techniques; [PA 4.2 Achievement a, c]
Statistical analysis tools/applications; [PA 4.2 Achievement b, c, e]
Process control tools/applications. [PA 4.2 Achievement d, e]

Steps

GP 4.2.1 Determine analysis and control techniques, appropriate to control the process performance.

Process control analysis methods and techniques are defined.

Selected techniques are validated against process control objectives.

GP 4.2.2 Define parameters suitable to control the process performance.

Standard process definition is modified to include selection of parameters for process control.

Control limits for selected base and derived measurement results are defined.

GP 4.2.3 Analyse process and product measurement results to identify variations in process performance.

Measures are used to analyse process performance.

All situations are recorded when defined control limits are exceeded.

Each out-of-control case is analysed to identify potential cause(s) of variation. Special causes of variation in performance are determined.

Results are provided to those responsible for taking action.

GP 4.2.4 Identify and implement corrective actions to address assignable causes.

Corrective actions are determined to address each assignable cause.

Corrective actions are implemented to address assignable causes of variation.

Corrective action results are monitored.

Corrective actions are evaluated to determine their effectiveness.

GP 4.2.5 Re-establish control limits following corrective action.

Process control limits are re-calculated (as necessary) to reflect process changes and corrective actions.

More Information

Checklists	Using Process, Generic and Base Practices workitems
Guidelines	Guidance on Process Attribute determination