Application Of Electric Valves For Nuclear Power Applications

The technical characteristics and requirements of electric valves used in nuclear power plants are higher than those of conventional large thermal power plants. Valves generally include gate valves, globe valves, check valves, butterfly valves, safety valves, main steam isolation valves, ball valves, diaphragm valves, pressure reducing valves, and control valves; The highest technical parameters of representative electric valves are: maximum diameter DN1200mm (nuclear level 3 butterfly valve), DN800mm (nuclear level 2 main steam isolation valve), and DN350mm (nuclear level 1 main circuit gate valve); Maximum pressure: approximately 1500 pounds; Maximum temperature: approximately 350 ℃; Medium: coolant (boronized water), etc. Requirements for the production of nuclear grade electric valve products: usually in accordance with the nuclear industry standards EJ, American ASME, IEEE standards, and French pressurized water reactor nuclear island mechanical equipment design and construction rules RCC-M.