I hadn't noticed that 7.3.7 mentions "approval" and 7.3.1 doesn't.
Still, I agree with Helmut. By 7.3.1, you need to determine what are the appropriate review, verification and validation that need to be performed on your product's design "at each design and development stage". Changes may occur at any stage, so they must be controlled by 7.3.1. Sec. 7.3.7 just makes it more explicit.
As to whether "self approval" is adequate here (or in 4.2.3a), that's something only you or someone in your organization could answer.
In Geometrica, designers prepare "design reports" and "approval plans" that document, in detail, the design process and its results. These reports contain information about the designer's verification, including, for some critical design aspects, redundant calculations using different methods. Geometric validation is done on an actual, full scale, "test module", that is fabbed and assembled before the bulk of production, and then inspected by the designer. Design review and a second verification are done by the technical director or a senior engineer from the design report and the test module inspection report. Only after this design review, the records are sent to the customer for their approval before production (we call these "submittals"). Structural validation is done by sample testing during production. Any significant design changes require modification of the submittals.
So, because of the critical nature of our design process, we don't do "self approval" of the design nor of most changes.
Still, I agree with Helmut. By 7.3.1, you need to determine what are the appropriate review, verification and validation that need to be performed on your product's design "at each design and development stage". Changes may occur at any stage, so they must be controlled by 7.3.1. Sec. 7.3.7 just makes it more explicit.
As to whether "self approval" is adequate here (or in 4.2.3a), that's something only you or someone in your organization could answer.
In Geometrica, designers prepare "design reports" and "approval plans" that document, in detail, the design process and its results. These reports contain information about the designer's verification, including, for some critical design aspects, redundant calculations using different methods. Geometric validation is done on an actual, full scale, "test module", that is fabbed and assembled before the bulk of production, and then inspected by the designer. Design review and a second verification are done by the technical director or a senior engineer from the design report and the test module inspection report. Only after this design review, the records are sent to the customer for their approval before production (we call these "submittals"). Structural validation is done by sample testing during production. Any significant design changes require modification of the submittals.
So, because of the critical nature of our design process, we don't do "self approval" of the design nor of most changes.