Lean Six Sigma Yellow Belt Certification Control and Sustainment Methods 3

Question 1

Why are Standard Operating Procedures (SOPs) critical to sustaining process improvements?

Accepted Answer

They capture the best-known method and ensure consistency across operators and shifts

Answer

SOPs document the improved process steps so all operators perform the work consistently, preventing regression to old habits.

Question 2

Which element is most important to include in a Standard Operating Procedure for sustainment?

Accepted Answer

Step-by-step instructions with expected outcomes and quality checkpoints

Answer

Effective SOPs include clear step-by-step instructions and quality checkpoints so operators know both what to do and what a good outcome looks like.

Question 3

A 5S audit is conducted during the Control phase primarily to:

Accepted Answer

Verify that workplace organization standards are being maintained

Answer

5S audits in the Control phase confirm that Sort, Set in Order, Shine, Standardize, and Sustain practices are being upheld over time.

Question 4

What is the main risk of failing to update SOPs after a process improvement?

Accepted Answer

Operators revert to old methods, eroding the gains

Answer

Without updated SOPs, operators may default to pre-improvement habits, causing the process to regress and wasting the improvement effort.

Question 5

Which training approach best ensures operators can sustain a new process standard?

Accepted Answer

Hands-on training with return demonstration and competency verification

Answer

Return demonstration lets the trainer verify the operator can correctly perform the new method before working independently.

Lean Six Sigma Yellow Belt Certification Practice Test