4M Change To Closely monitor the process and effect of change on product.

1. 4M CHANGE
Presented By : Hardil Shah

2. What is 4M change?
1. MAN
2. MACHINE
3. MATERIAL
4. METHOD

3. Purpose of 4M Change
• To closely monitor process and effect of
change on product.

4. Man
• If new Person join.
• Person is on leave for more than 1 month.
• Shift time extended
• If person is sick.
Machine
• Machine Change.
• Engineering change in Machine.
• Preventive Maintenance planned.
• Break down maintenance done on machine.
• Fixture change in machine.
• Removing or adding external process on machine

5. Material
• New Supplier or change current supplier
• New Material for approval source of trial.
• Same Supplier but mixing combination change.
Method
• Any Deviation form Process control (Process Parameter Change)
• Process Sequence Change.
• Additional process implemented.
• New technology implemented

6. Type of 4M change
1. Planned (Permanent)
2. Un Planned (Temporary)

7. Planned (Permanent) Type Change
• The Change that is done due to some
unavoidable reason.
Unplanned (Temporary) Type Change
• The change that discussed before change and
pre planned.

8. Criteria of 4M change
• Set up
• Containment
• Retro active

9. Setup
• First Part Approval report
Containment
• To Closely monitor running production
Retroactive
• To trace back from where problem arise in
production.

10. Criteria : 4 M Change
MAN MATERIAL METHOD MACHINE
Extended shift working (
over 2 shifts ) -
unplanned
Source of supply
change for controlled
item- planned
Any deviation from Process control
standard - planned
Machine Change - planned
Manpower change
( regular)
Different spec /
Grade of incoming
controlled material
from approved
source for trials -
planned
Process sequence change -Unplanned Breakdown Maint. Which
affects process / quality of
product - unplanned
Person left shift job due
to sickness
Material
Composition change-
Planned
New technology introduction - planned Fixture change - such as enamel
applicator - planned
New joinee - planned Material
Combination Change-
Planned
Additional process adopted - planned Preventive maintanence. -
planned
On Leave For More than
one Month
Inspection equipment change - planned

11. Traceability
• Traceability or unique Identification is very
important for further assessment of product.
• To check product deforms after time interval.