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The construction unit shall implement a joint acceptance system for building materials (including building components and accessories). Material personnel, engineers and technicians and supervisors must conduct joint inspection and acceptance of the incoming equipment and main building materials and building components, and bear the corresponding quality responsibility.
(2) Quality inspection of materials
1. Raw material quality inspection should take three customs
(2) Check it regularly. During the inventory of raw materials, they should be inspected regularly, and problems should be found and dealt with in a timely manner; to avoid the deterioration of materials, such as deterioration due to poor management or other reasons.
(3) Check before use. For the materials to be used, it is necessary to carry out pre-use inspection. If it is unqualified, it cannot be used for construction.
(2) There are four methods for material quality inspection: written inspection, visual inspection, physical and chemical inspection and non-destructive testing.
2. For the use of new processes, new materials and new technologies, simulation tests should be carried out in advance. By mastering the performance and operation of new materials, it is guaranteed that the quality of the project will not be affected during use.
3. Pay attention to the use and certification of materials. Before using the materials, the materials must be checked, certified, certified, and certified. The new materials must pass the test and appraisal before use. The substitute materials must pass the calculation and demonstration, and meet the requirements of the specifications. . Materials that are certified as unacceptable cannot be used.
Mining engineering materials acceptance, inspection and use
(I) Material Acceptance The main materials, semi-finished products, finished products and building components used in construction projects shall be inspected on site. Involving safety, function of the relevant product, a retest shall regulate the provisions of the professional engineering quality acceptance. And shall (construction unit technical director) examination approved by the supervising engineer.
(1) Personnel (field) inspection. According to the specific circumstances, the raw materials of the incoming personnel warehouse shall be fully inspected or sampled according to the quality standards, and the rejected materials shall be rejected or returned to avoid the entry of non-conforming products into the personnel warehouse.
2. Material quality inspection degree and inspection method
(1) According to the specific information of the material information and the guarantee data, the quality inspection degree can be divided into three types: exemption inspection, sampling inspection and full inspection.
(3) Storage and use of materials
1. Strengthen the transportation and storage of materials, improve the on-site material management system, and avoid material loss, deterioration, and expiration.