Mistake-Proofing (Poka-Yoke) Checklist
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Process Identification & Risk Assessment
Focuses on identifying critical processes and potential error points through risk assessment techniques.
Briefly describe the manufacturing process being assessed.
What risk assessment methodologies were used (e.g., FMEA, Cause-and-Effect Diagram)?
Estimated frequency of the critical process (units per hour/day/week)
List the potential failure modes in this process.
Severity rating (1-10) for each identified failure mode (1=minor, 10=critical)
Occurrence rating (1-10) for each failure mode (1=rare, 10=frequent)
Detection rating (1-10) of current controls (1=certain detection, 10=undetectable)
Document the rationale for selecting this process for poka-yoke implementation (e.g., high RPN score, frequent customer complaints).
Which method was used to prioritize processes?
Design & Implementation of Poka-Yokes
Covers the design and implementation of specific poka-yoke devices and methods for selected processes.
Which type of poka-yoke is most appropriate for this process?
Detailed description of the designed poka-yoke.
Diagram or sketch of the proposed poka-yoke.
Estimated cost of implementing the poka-yoke (in USD).
Which parts/processes will this poka-yoke impact?
Part Number of the poka-yoke (if applicable).
Target implementation date for the poka-yoke.
Potential issues anticipated during implementation and mitigation strategies.
Control & Monitoring of Poka-Yokes
Deals with how to monitor and maintain the effectiveness of implemented poka-yokes and their impact on error rates.
Error Rate Before Poka-Yoke Implementation
Error Rate After Poka-Yoke Implementation
Poka-Yoke Performance Rating (e.g., Excellent, Good, Fair, Poor)
Description of Observed Pokeyaoke Malfunctions or Issues (if any)
Last Pokeyaoke Maintenance/Inspection Date
Approximate Time of Error Occurrence (if applicable)
Potential Root Causes of Error/Malfunction (select all that apply)
Photos/Videos of Pokeyaoke and Observed Issues (if applicable)
Operator Training & Awareness
Focuses on training operators to understand poka-yokes, their purpose, and how to respond to any issues encountered.
Explain the purpose of Poka-Yokes in the manufacturing process.
Which of the following best describes why we use Poka-Yokes?
Which of the following are potential benefits of effectively implemented Poka-Yokes?
Describe how to respond if a poka-yoke activates or indicates an error.
What should you do if you identify a potential improvement to a poka-yoke?
How many Poka-Yokes are you familiar with in your workstation?
Describe any concerns or questions you have about Poka-Yokes or their operation.
Poka-Yoke Effectiveness Review & Improvement
Covers periodic reviews of poka-yoke effectiveness, identifying areas for improvement, and ensuring ongoing relevance.
Current Error Rate (Prior to Pokayoke)
Current Error Rate (Post Pokayoke Implementation)
Overall Effectiveness Rating (1-5, 5=Excellent)
Describe any observed anomalies or unexpected results from the Pokayoke.
What areas of the Pokayoke's performance require improvement?
Specific suggestions for improvement (if any).
Date of Last Review
Scheduled Date for Next Review
Reviewer Name
Reviewer Signature
Documentation & Standardization
Focuses on documenting poka-yoke designs, procedures, and maintenance schedules for consistent application and knowledge transfer.
Poka-Yoke Design Document Version Number
Detailed Description of Each Poka-Yoke Device/Method
Poka-Yoke Design Drawings/Schematics
Quantity of Each Poka-Yoke Device per Workstation
Applicable Processes Where Pokeyoke is implemented
Date of Last Poka-Yoke Documentation Review
Summary of changes implemented during last review
Current Status of Poka-Yoke Documentation
Document Controller Name
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