Main Activities in Kazakhstan Aimed to Substantiate ITER and Demo Reactors Safety

摘要

The fist stage of such activity is examinations of physiochemical properties of compact beryllium. This work is carrying out at Ulba Plant - world known beryllium producer. Quality control of compact beryllium products includes step-by-step operational control and attestation control affinal products for compliancy with the customer's requirements. Step-by-step control is carried out along the whole production process and includes the control of the following: temperature, pressure, duration of the process and other process parameters, listed in the in-plant documentation; quality of intermediate semiproducts (chemical, physical and mechanical properties, defects, appearance, dimensions, etc). The process control is carried out by personnel and by an independent inspection service. The attestation control affinal products is carried out for compliancy of products with requirements of consumers and includes the following: chemical analysis, mechanical testing, radiographic testing, ultrasonic testing, appearance inspection, dimensions inspection, density testing, metallographic inspection. The attestation control is carried out by a special service independent of technologists. This is the service that makes a final report on the compliancy of the product with requirements of customers and gives permission for shipping the products. The process and attestation control is carried out with the use of equipment, apparatuses and devices which are checked regularly by a special instrumentation service. If they do not meet the requirements in precision, reliability and stability they are removed from service and not approved for measurements. Methods of control of specific values and characteristics, the apparatuses used and allowed classes of accuracy are specified in state standards, tensile specifications of products and in-plant standards or in agreements between a producer and a customer. The next stage will be manufacturing of mock-ups of reactor's first wall elements. At the same time the experiments on determination of reflectivity of beryllium and its alloys (Titanium berrylide, for example) in vacuum and under steam oxidation would be carried out. Finally so produced mock-ups would be tested with respect to its interaction with steam. The test temperature will be up to 1200℃. Also irradiation tests on in-pile saturation of beryllium with deuterium would be carried out.