1. Change reason: It is very important to record the change reason, which helps to understand why the process needs to be modified. This can provide a background and a reasonable explanation for the change.
2. Change content: record the change content of process flow in detail, including modification, addition and deletion steps, process parameters, equipment configuration, etc. Make sure the records are clear and unambiguous, and avoid ambiguity.
3. Time and date of change: record the time and date when the change takes effect, so as to trace back and compare different versions of the process.
4. Person in charge of change: record the person in charge of process change, including process engineer, quality control personnel, production manager, etc. This helps to track responsibility and communication during the change process.
5. Verification and approval of changes: record the verification process of process changes, including verification methods, results and approvers. Verification ensures that the changed process can run normally and meet the requirements of product quality and safety.
6. Impact assessment of change: record the impact assessment of change, including the impact on product quality, production efficiency and cost. This helps to evaluate the feasibility and risk of the change.
7. Change notice and training: record the change notice and training for relevant personnel to ensure that they know and understand the changed process flow and can implement it correctly.
8. Change file and version management: manage the version of the process change record file to ensure that the change history of different versions can be traced back for future reference and review. These records help to ensure the traceability and manageability of process changes, and also help to ensure the stability of product quality and production efficiency.