In order to ensure that the quality of the project meets the standards, it is necessary to have special institutions to test the materials, accessories and equipment of part-time projects, so there are many testing companies in the market. For testing companies, qualification application is a very important link, and the required application conditions include sufficient registered capital, passing measurement certification and testing experience. For testing companies in different fields, the conditions are different.
Within the territory of People's Republic of China (PRC), the accreditation review of inspection and testing institutions that provide data and results with proof to the society shall comply with the guidelines of the Administrative Measures for Accreditation of Inspection and Testing Institutions. On the basis of this evaluation criterion, CNCA has formulated and issued supplementary evaluation requirements according to the particularity of inspection and testing institutions in different industries and fields, and the supplementary evaluation requirements together with this evaluation criterion serve as the evaluation basis.
Function of inspection and testing
According to the technical standards, product drawings, operation (process) regulations or the provisions of the order contract and technical agreement, the corresponding inspection and inspection methods are adopted to observe, test and measure the quality characteristics of the products to determine whether the product quality meets the specified requirements. This is the identification function of quality inspection.
Appraisal is the premise of "checking", and only through appraisal can we judge whether the product quality is qualified or not. Without identification, it is impossible to determine the quality of products and it is difficult to achieve quality control. Therefore, the identification function is the basis of various functions of quality inspection.
Inspection is the most basic function of quality inspection, which can also be called quality assurance function. This function has existed since the appearance of quality inspection. Even if the production automation is highly developed in the future, the means and technology of inspection will develop and change, and quality inspection is still indispensable.
The production of an enterprise is a complicated process. Factors such as people, machines, materials, methods and environment (4M 1E) may change the production state, and each process cannot be in an absolutely stable state. The fluctuation of quality characteristics exists objectively, and it is actually impossible to require every working procedure to ensure the production of 100% qualified products.
Therefore, it is absolutely necessary to perform the function of inspection through inspection. With the continuous improvement of production technology and the improvement of management, the workload of inspection can be reduced, but inspection is still essential. Only through inspection and strict control, unqualified raw materials will not be put into production, unqualified semi-finished products will not be transferred into the sequence, unqualified parts will not be assembled, and unqualified products will not leave the factory, can the quality of products be truly guaranteed.
Refer to the above contents: Baidu Encyclopedia-Evaluation Criteria for Qualification Identification of Inspection and Testing Institutions