© 2004 Cayman Business
Systems
Rev:
Pre-G3 - Rendered Thursday,
February 12, 2004
•Errors due to lack of standards - Some errors occur when there are not suitable instructions or
work standards. Example:
A measurement may be left
to an individual’s discretion. Safeguards: Work standardization, work instructions.
•Surprise errors - Errors sometimes occur when equipment
runs differently than
expected. Example:
A Machine malfunction without warning. Safeguards: Total Productive Maintenance, work standardization.
•Intentional errors - Some people make mistakes
deliberately. Crimes
and sabotage are examples. Safeguards: Fundamental education,
discipline.
•
Mistakes happen for many reasons, but almost
all can be prevented if we take time to identify when and why they happen and then take steps to prevent them by
using Poka-Yoke methods
with consideration to other available safeguards.