Study on the New Material of the Boundary Valve Sealing Surface of the Nuclear Power Plant
The new RCCM standard for nuclear power plants aims to address the issue of increased radioactivity caused by cobalt 60 generated after activation of nickel based alloys,as well as the issue of corrosion resistance under special operating conditions.Developed a new iron-based alloy material for valve sealing surfaces.This paper introduces the problems faced by the existing materials,and analyzes and studies the new material NOREM02 used in nuclear power plants to improve the"dead pipe segment effect"and is the first application in China.The NOREM02 material of the boundary isolation valve of the safety injection system,which has been applied to the site for 6 years,was analyzed from the physical and chemical properties and microorganization,which a reference for the subsequent selection and use of the material.
nuclear power plantNOREM02dead pipe segment effectM310
NETL
NSTL
万方数据
