The Material Review Board or MRB is a board that consists of authorized supplier quality and engineering members that are needed to review, evaluate, and determine the proper disposition of nonconforming material referred to it.

The MRB is a cross-functional team that meets on a weekly or monthly basis to discuss and decide on any critical deviations that can not be dispositioned outside of the group. Nonconformities that are discussed between the MRB members are documented within a Non-Conformity Report or MCR, which is a document that allows the tracking of all the deviations.

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