Several issues with the quality assurance system
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This post was last edited by lu*alm on 2010-1-27 at 11:09. I have been studying the quality assurance system recently. The quality control inspection forms in this system include 4 types of control points: W: Witness point, monitored by professional quality inspectors; E: Routine inspection point, also monitored by professional quality inspectors; R: Stop point, inspected jointly by quality inspectors and professional quality inspectors as well as the construction team; H: Stop point, inspected jointly by quality assurance officers, quality inspectors, and a third party. What are the specific differences between these 4 types of points? Is it a matter of the intensity of the inspections, and a progression from a shallower to a deeper level of responsibility in carrying out those inspections? 2. The quality control department at my company required me to conduct riveting inspections on the previous batch of products; I was asked to prepare a separate form to be filled out, including the product number, name of the part being processed, material type, thickness, inventory number, theoretical dimensions, marking dimensions (2 length measurements, 2 width measurements, and 2 diagonal measurements), cutting dimensions (same as the marking dimensions), and the time taken for cutting. It feels very complicated. I checked the quality assurance system. Is the normal procedure for cutting steel plates supposed to be as follows: a. The technical department prepares an \"Inspection Flow Card\" (the names may vary from factory to factory, but the process is similar). This card is then sent to the workshop for execution. b. After marking, notify the riveting inspector to check the dimensions according to the \"Inspection Flow Card\" (which lists the length, width, and relevant tolerances). If the dimensions are acceptable, approval is given; however, there is no need to sign or record the dimensions, and the operator may proceed with cutting the material. c. After material removal, the operator signs and dates it, notifies the riveting inspector, and checks the dimensions against the \"Inspection Flow Card\"; there is no need to record the dimensions. If they are satisfactory, approval is given and the operator signs. d. Once the construction of the final product is completed, the \"Inspection Transfer Card\" is submitted to the chief inspector for organization and to be monitored by the inspection officer. Is my approach correct? 3. When the inspection unit was reviewing the design change request, we only had a fax copy; they requested the original document with a stamp. Is their request reasonable? In which standard clause can this be found? I would appreciate it if fellow sailors could share their insights. Thank you!
The control points in the pressure vessel manufacturing process are the key activities that need to be managed as part of quality control. Control points can be classified into the following categories based on their importance and degree of control in the production process: 1) Inspection points (E points), also known as check points, refer to those key processes, steps, stations, or major quality aspects in the product manufacturing process that must be inspected by dedicated inspectors. It should be noted that only those items that have a significant impact on product quality or exhibit large variations in quality are listed as inspection points. 2) Review point (R point), also known as approval point or inspection point. It means that, within the operation of the quality assurance system, after completing a particular key activity or process, in addition to the person who carries out the task conducting self-checks to ensure compliance with relevant regulations, it is also necessary for personnel within the quality assurance system who hold higher responsibilities than the person who performed the task to carry out verification. It usually involves reviewing files and records. 3) Stop point (H point), also known as suspension checkpoint or stop point. It means that when activities are carried out in the manufacturing process of a project or product that have a significant impact on quality, the manufacturer should temporarily halt production, and inspections should be conducted by specialized inspectors in the presence of on-site supervision inspectors. The inspection results must be confirmed and signed by the supervisor before manufacturing can proceed. Stop points should usually be predetermined in the contract or technical agreement. 4) Witness point (W point), also known as the agreed checkpoint. It refers to the control points specified by customers and supervision parties as important requirements for a certain product, which should also be agreed upon in advance in the contract or technical agreement. When product manufacturing reaches this stage, the manufacturing unit should notify the party in charge to be present and witness it.