How do you raise an NCR?

The NCR is a formal notification to the contractor that work does not meet the plans or the specifications for the project. Any item of work found to be deficient - out of conformance with the construction drawings and/or specifications - will be identified by the inspector on the non-conformance report as described in this section. Non-conformance reports will be included on the non-conformance log and tracked through verification that the non-conformance has been corrected

Thank you for the invitation

Agreed with colleagues

A Non conformance report is raised whenever there is deviation from the standard and specification.The deviation caused have considerable meaning against the quality and standard of work done. 

Within the context of oil and gas business, some construction contractors has an understanding to raise the NCR against the "Client" if there is a discrepancy or ambiguity in the Client requirement.In my view point, it seems very awkward to raise an NCR against the Client/Customer, who is giving a business to the Contractor. One of the requirements in ISO 9001:2015 QMS is to 'Review the Customer Requirements'. Contractor can communicate to the Client for any unclear requirement using other tools such as Request for Information (RFI) or any other process. But, in general, to raise the NCR to the Client may have negative impact to the contractor business (such as losing the next contract).Any thought or comment would be much appreciated.

Any product or material which does not conform to the customer requirements or specifications,that time we can raise Nonconformance against that product/material.