Water chemistry and particle formation processes in a Supercritical Water Cooled Nuclear Reactor system

超临界水冷核反应堆(SCWR)是满足未来能源市场需求的创新候选反应堆。该项目的目的是研究近临界和超临界水条件下腐蚀和防腐背后的水化学，以及盐和腐蚀产物在超临界水中的颗粒形成过程。这项工作的主要技术目标是将CANDU(加拿大重铀)SCWR压力管的腐蚀率降至最低，同时将腐蚀产物沉积和核外表面(管道、涡轮叶片)上的点蚀降至最低。这项研究将有助于在CANDU SCWR的含氧超临界条件下开发适当的化学控制策略，并降低SCWR压力管和非核部件(如涡轮叶片)的动力设备的开发成本。

The supercritical water cooled nuclear reactor (SCWR) is an innovative candidate to meet the future needs of the energy market. The purpose of the project is to investigate the aqueous chemistry behind corrosion and corrosion prevention under near-critical and supercritical water conditions, as well as the particle formation processes of salts and corrosion products in supercritical water. The key technical objective of the work is to minimize corrosion rates in a CANDU (CANada Deuterium Uranium) SCWR pressure tube, as well as minimize corrosion product deposition and pitting on out-core surfaces (piping, turbine blades). This research should help develop an appropriate chemistry control strategy under oxygenated supercritical conditions in a CANDU SCWR and reduce the exploitation costs for power equipment, both for the SCWR pressure tube and for non-nuclear components, such as turbine blades.