Difference between Rework and Repair

What is the Difference between Rework and Repair?

→ Before going to understand the difference between rework vs repair we will discuss the fundamental of those words.

→ As we all know, in IATF 16949:2016 Standard, many new words have been added like Interested Parties, Risk, Context, Product Safety, Corporate Policies, Embedded software, TPM, Temporary Change, Interim action, Error Proofing, Repair, etc.

→ The objective behind adding new terminology is to align the updated standard with the current manufacturing practices in the automotive sector.

→ Also, it will help the industry to match with the customer's expectations as per the Customer Specific Requirement (CSR).

→ Rework and Repair is the most common activity that happens in almost all organizations.

→ So far, many of us were using both terminologies interchangeably.

IATF 16949:2016 Standard has mentioned the control of rework and repair_processes in clause no. 8.7.1.4 and 8.7.1.5 respectively.

→ Many organizations do not have adequate controls over their manufacturing_process.

→ It results in the initiation of the Disposition_Process.


Types of Product Disposition

→ Generally, there are 5 stages of product disposition as mentioned below.

  • Segregation,
  • Rework,
  • Repair,
  • Deviation,
  • Scrap.

Types of Product Disposition

Rework vs Repair | ISO 9000 | IATF 16949

→ Now as per the ISO 9000 Standard, and IATF 16949:2016 Standard we will understand the differences.


Rework Process:

→ Rework is an action on a non-conforming product or service to make it conform to the requirements.

→ In this process, the product matches the specification or drawing.

→ This process has lower risk as compared to the repair_process.


Example Rework Process:

→ Problem: After the machining process, if we found the length of the shaft is more than the specifications.

→ Action Taken: So we rework the shaft and by the re-machining_process make shaft length within the specification.

→ This is an example of the Rework Process.

→ We will take one more example for a better understanding.

→ Problem: If we found our bike's tire pressure is less than the operational pressure.

→ Action Taken: So we will just inflate the tire by adding the air up to the operational pressure.

→ In these examples, both the product shaft and tire look like all the other good products and there is no visible sign of any changes in physical appearance.


Repair Process:

→ Repair is an action on a non-conforming product or service to make it acceptable for the intended use.

→ In other words, we can say that after repair the product is ready to use functionally but it might not meet the specification or drawings.

→ This_process has a higher risk as compared to the rework_process.


Example of Repair Process:

→ Problem: After the machining process, if we found the length of the shaft is lower than the specifications.

→ Action Taken: So we rework the shaft by applying the welding and by the re-machining_process to make shaft length within the specification.

→ This is an example of the Repair_Process.

→ Here we are adding extra material for making the product functionally and specification-wise ok.

→ We will take one more example for a better understanding.

→ Problem: If we found our bike's tire got punctured.

→ Action Taken: So we will add one patch on the tire and make it functionally ok. So the tire is ok for the intended use.

→ Here in both examples, the adding material is not the approved process by the Customer.

Rework vs Repair Summary

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