8.5 Step 5 : Establish Conditions
(1) Revise Quality Assurance Rate Evaluation Table
The QA Rate Evaluation Table was revised each time the team completed a particular improvement.
(2) Revise standards
Making improvements meant changing the operational benchmarks, and therefore the team revised all of the task guidelines and other work standards appropriately. These changes affected, for example, the order in which components were assembled, the way components were arranged, and the way jigs and tools were used.
8.6 Step 6 : Maintain Conditions
The company wanted to make sure that the new situation was faithfully sustained after the accreditation for excellence had been achieved, so they instituted a system of daily checks to ensure that the employees were maintaining the equipment and work area in the proper condition, and organising and observing the job site control forms and standards properly. They also wanted to confirm that the work standards had been established and were being obeyed, and that if any defects occurred, they would be dealt with painstakingly, and reliably prevented from happening again.
8.7 Step 7 : Improve Conditions
Factors such as the arrangement of the components, the difficulties of using a particular jig or tool, or the inclusion of strenuous operations that require twisting or stretching, may not directly cause defects, but they can be a contributing factor.
Therefore, after restoring the situation at Step 2, Company B sought to improve difficult tasks to make them easier to carry out correctly. In conjunction with this, they instituted tagging and detagging of such tasks as part of their Autonomous Maintenance programme.