The usual method of design verification is to compare the input requirements with the output of the process, such as the level of review.In addition, the design verification method can also include: comparison method (such as transformation calculation method comparison results or similar design and development project comparison results), test, simulation, etc..The applicable verification methods are usually determined by the verification personnel and shall be in compliance with the requirements of the regulations or specifications.4.6 design validationIn order to ensure that the product can meet the specified or known intended use or application requirements, it shall be confirmed in accordance with the planned arrangements (see 7.3.1). The construction design and consultation of the confirmation by the owners, the power of the phased implementation, usually including:Evaluation of the feasibility study report of a;B) programme design review;C) preliminary design approval;D) construction drawing review of the authority.As long as it is feasible, the confirmation shall be completed before the delivery or implementation of the product, the records of the results and any necessary measures shall be kept. When required, the hospital or the person shall be appointed to participate in the activities of the owners and the authority of the design confirmation activities, and record the results of the design confirmation. Take the necessary steps to deal with the problems identified in the follow-up period. If the formal approval of the views and records are inconsistent, should be resolved.The records of the design confirmation shall be kept by the responsible person of the project and shall be filed with other technical documents.4.7 design change controlAfter the design and development of the output document is approved, all changes shall be implemented as required.Control of design changes shall include:L
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