Change related to product or process is defined as the ‘man,  material, machine and method used for’ is not as per control plan, work  instruction, skill matrix and customer approval.

What is Change?

Change are 2 types :

1. Plan Change 2. Un - plan Change 

4M are : Man Machine Method & Material

Change that occurs with prior information to the concerned person and defined action is taken to control the occurrence of non-conformity of product at the change point.

Plan Change

Example of Plan Change: Machine & Tool under plan maintenance New operator New machine New Instrument

Change that occurs without prior information to the concerned person and defined action is taken to control the occurrence of non-conformity of product at the change point.

Unplan Change

Example of Un plan change : Machine & Tool under breakdown Unproved supplier material used Different grade material used

4M change board is to updated all changes in the process

4M Change Board

4M Change Tracking Sheet

In Tracking sheet we prepare summary of all the changes in process and their detail

Retroactive Inspection

Retroactive inspection is to check the suspected parts which are made  before any unplanned change or any abnormal change happen.

More information about 4M Change Management in an automotive industry.

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