Incoming Quality Inspection

Incoming quality inspection is a process used to verify the quality of materials that are received from internal operations as well as external suppliers. This process is important to ensure that the materials meet the required specifications and are suitable for use in the manufacturing process.

The following are some key steps in the incoming quality inspection process:

  1. Define the quality requirements: Before materials are received from a supplier or an internal operations, the receiving organization should define the quality requirements for the materials. This includes the specifications for the materials, such as size, shape, and composition.
  2. Inspect the materials upon receipt: When the materials are received, they should be inspected for any damage that may have occurred during shipping. The manufacturer should also verify that the materials meet the defined quality requirements.
  3. Conduct a visual inspection: A visual inspection should be conducted to check for any visible defects, such as cracks, scratches, or discoloration. This inspection should be done by a trained inspector who is familiar with the quality requirements for the materials.
  4. Conduct a dimensional inspection: If the materials have specific dimensional requirements, a dimensional inspection should be conducted. This involves measuring the materials to ensure that they meet the required specifications.
  5. Conduct functional testing: If the materials are intended to be used in a specific application, functional testing may be required. This involves testing the materials to ensure that they perform as expected in the application.
  6. Record and report results: The results of the inspection should be recorded and reported to the appropriate personnel. If any defects are found, the supplier should be notified so that corrective action can be taken.


An incoming quality inspection process is designed to identify any nonconforming materials received from a supplier. Nonconformance can occur if the materials received do not meet the established quality requirements or specifications.

The following are some examples of how an incoming quality inspection can lead to nonconformance:

  1. Material does not meet the required specifications: If the materials received do not meet the specified requirements, such as size, shape, or composition, they will be considered nonconforming. For example, if the manufacturer specifies that a certain material should be of a specific dimension, but the received material is larger or smaller than the specified dimension, it will be considered nonconforming.
  2. Material is damaged during transportation: If the material is damaged during transportation, it can be considered nonconforming. The manufacturer should inspect the material upon receipt to ensure that it is in good condition and has not been damaged during transit.
  3. Material has visual defects: If the material has visual defects, such as scratches or discoloration, it can be considered nonconforming. The manufacturer should conduct a visual inspection of the material to identify any defects and ensure that they do not affect the quality of the final product.
  4. Material fails functional testing: If the material is intended to be used in a specific application and fails functional testing, it can be considered nonconforming. The manufacturer should conduct functional testing to ensure that the material meets the required performance criteria.

If nonconforming materials are identified during the incoming quality inspection process, the manufacturer should notify the supplier and work with them to resolve the issue. The manufacturer should also establish procedures for handling nonconforming materials and ensure that they are segregated and not used in the production process until the issue has been resolved.