Lean Manufacturing and Six Sigma Definitions

Glossary terms, history, people and definitions about Lean and Six Sigma


Acronym for Safety, Quality, Delivery and Cost.

Refers to a SQDC board placed in a process area, to quickly convey how the process is performing against these 4 categories.

For example, Safety would measure whether the safety measures or metrics were achieved each day, and marked on the board. Safety metrics might include:

  • No near misses
  • No safety violations
  • No missed work due to injuries
  • No unsafe work practices observed
  • No safety glasses violations

Daily metrics can be established for each SQDC category, and if the teams meet the goals/metrics, then the category is marked as green for the day, or red if they did not meet it.

SQDC QDIP lean management board

Customer can also be used for the letter “C”.

Other versions use SQDCM, which includes M for Morale. Newer forms modify the S to be a “+” sign (for health care), and include “E” for Environment.

This is also called QDIP which is similar to SQDC, but uses different letters. Another example is SQDPG (Safety, Quality, Delivery, Productivity, Growth), which is used at Dr Pepper Snapple Group. In the book The Toyota Way, it’s called QCDSM (Quality, Customer, Delivery, Safety, and Morale) at Toyota.


Learn how to download these SQDC templates and letters >>>


Additional Resources