核电厂放射性贮存池钢覆面检漏系统关键设计参数分析与研究

Analysis and Research on Key Design Parameters of Leakage Detection System for Steel Liner of Radioactive Storage Pool in Nuclear Power Plants

检漏系统是长期放射性贮存池钢覆面的重要组成部分。为确定检漏系统的关键设计参数,采用风险分析、流体力学理论计算等方法开展分析研究,并基于某三代核电厂乏燃料水池钢覆面检漏设计开展实证分析,确定了乏燃料水池钢覆面检漏系统的检漏回路数量、最大泄漏量、检漏管道坡度和响应时间。同时,通过与乏燃料水池冷却和处理系统的设计补水能力及液位报警情况进行比对,结果表明乏燃料水池工艺设计上留有充足裕量。

Leakage detection system is one of the most important parts of the steel liner for long-term radioactive storage pool.In order to confirm the key design parameters of the leakage detection system,the analysis work is performed by risk management analysis and hydrodynamics calculation methods.Based on the analytical conclusion,the detail design of the leakage system for the spent fuel storage pool liner of 3 rd generation nuclear power plants is cited as an example.Moreover,it shows that,there is sufficient design margin for the spent fuel pool system design by comparing the water replenishment capacity and liquid level alarm design of PTR system with the obtained data.