Difference between Process Verification vs. Process Validation in APQP?

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Y

Yew Jin

#2
Re: Process Verification & Process Validation

From ASQ Quality Glossary

Validation: The act of confirming a product or service meets the requirements for which it was intended.

Verification: The act of determining whether products and services conform to specific requirements.
 
M

mustafa siddiqui

#3
Verification is normally to see if the process in place is absolutely followed or not, more specific to Process Audit. It makes sure that the multiple operations that need need to be performed are in correct sequence.
Example: If your final product has the following processes that need to be accomplished,
Work station 100:sand blasting,
Work station 106: Nitriding,
work station 101: Machining,
Work station 102: broaching,
Work station 103: assembly,
Work station 104: washing,
Work Station 105: final test.
Now in the verification you make sure the process at each place are followed correctly in the same sequence.

Process validation is more of developmental stage where you are more open to making changes/ validate your process. You are making sure that the process you intend to apply is delivering the desired product as per the design/ functional specification. It is an attempt to assure that the sequence of operations that are performed on the product are correct or not.
In the above example, if doing the process validation , it fails as the operation of machining is immediately after the sand blasting and nitrading operation. If machining is done at this point then the operations prior to this are rendered useless. The suggestions from this validation would be that the machining operation would supercede all other operations.

Hope you would understand this more clearly.

Mustafa Siddiqui
 
D

Duke Okes

#4
What is the difference between Process Verification & Process Validation in APQP? Thanks for the help:confused:
The difference between verification & validation is about the same regardless of application.

Verification is more intangible (e.g., a 2nd party looks at what someone has done and says, yes, it looks correct; a computer simulation is done to see how the system performs, etc.).

Validation is as close as one can get to testing the item (product, process) in the real world. Actually run/use it and see if it performs as it was designed to perform.
 
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