Abstract:
Introduction The paper aims to develop a corrosion resistant and wearable ultrahigh molecular weight polyethylene(UHMWPE) nozzle in order to solve the nozzle erosion and corrosion problems of circulating water filtration system(CFI) which is nuclear safety grade 3 system in nuclear power plant.
Method Through the test of important processing parameters, the nozzle manufacturing process was confirmed. In order to verify the wear resistance and hydraulic performance of the developed nozzle, the wear resistance test of the material was carried out and the scour test and hydraulic test using developed nozzles also have been done.
Result Test results demonstrate that the UHMWPE nozzle has excellent wear resistance, which is much better than traditional materials. The UHMWPE nozzle can meet the needs of high-speed erosion of nuclear power plants, and its hydraulic performance can also meet the requirements of nuclear power plants.
Conclusion The test results show that the performance of the UHMWPE nozzle is excellent. It has been used in the nuclear power plant for one and a half years, after continuous operation, no scour deformation and corrosion phenomena were found. Therefore, it is feasible to use it in the CFI system of nuclear power plant, which can replace the original imported nylon nozzle.
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