Aerosol pool scrubbing phenomena during the containment depressurization venting. Part Ⅱ: Test facility and test result

• Published in: Annals of nuclear energy Vol. 173; p. 109114
• Main Authors: Gao, Z.C., Zhang, D.D., Tong, L.L., Cao, X.W.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.08.2022
• Subjects: Aerosol retention; Containment depressurization venting; Scrubbing efficiency; Spent fuel pool scrubbing; Scrubbing efficiency; Containment depressurization venting; Spent fuel pool scrubbing; Aerosol retention
• ISSN: 0306-4549; 1873-2100
• DOI: 10.1016/j.anucene.2022.109114

•China aerosol Spent Fuel Pool scrubbing integrated test facility was introduced.•The aerosol measurement system of CASSI test facility was introduced in detail.•Aerosol removal test was conducted and evaluate the scrubbing efficiency of solid particles.•The feasibility of using Spent Fuel Pool as aerosol retention site has been preliminarily proved by this test. To verify the feasibility of aerosol scrubbing with Spent Fuel Pool (SFP) during the containment depressurization venting process, the China Aerosol Spent fuel pool Scrubbing Integrated (CASSI) test facility has been designed and built. The CASSI consists of the gas supply system, heating and insulation system, data measurement and acquisition system, aerosol generation system, and aerosol sampling and measurement system. In this study, the current status of the CASSI is introduced along with a description of the aerosol generation system and aerosol sampling and measurement system. A verification test has been carried out, and the test results are described in detail, which shows that the CASSI has good thermo-hydraulic stability and the scrubbing efficiency of solid particles is more than 99.8%. The scrubbing efficiency of particles with diameter greater than 1.08 μm is more than 99.9% during pool scrubbing. The test results proved the feasibility of aerosol scrubbing with SFP.