Pulsed Eddy Current for Rapid Scanning of Insulated Steel in CANDU® Reactors

用于快速扫描 CANDU® 反应器中绝缘钢的脉冲涡流

• 批准号: 531210-2018
• 负责人: Krause, Thomas
• 金额: $ 2.62万
• 依托单位: Royal Military College of Canada
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=698058
• 关键词: Pulsed; Eddy; Current; Rapid; Scanning

This project will focus on development of pulsed eddy current (PEC) inspection technology and development of analysis tools for variable multi-parameter conditions for both PEC and eddy current (EC) inspection data. Development will target rapid inspection of insulated steel pipe that makes up a large portion of balance of plant piping within CANDU® nuclear reactors and thick walled steel structures, including the calandria and shield tank assembly (CSTA), high pressure feed water heat exchanger and storage tanks. Pulsed eddy current (PEC) has demonstrated a capability to perform inspection of conducting ferromagnetic materials at large lift-offs. Development of PEC technology will be toward a rapid inspection capability for assessment of through-thickness general corrosion in steel pipe wall, without costly removal and replacement of insulation. This project will also investigate multi-parameter eddy current signal analysis, accounting for effects of permeability variations and resistivity on wall thickness assessment in PEC applications and for multi-variable parameters in EC steam generator (SG) inspection. Inspection and monitoring of pipe condition through insulation can be integrated with preventive maintenance programs, thereby enhancing pipe system management processes. Compensation for multi-parameter variations in PEC and EC signal analysis will enhance detection and flaw sizing capability, improving inspection reliability.

该项目将着重于开发脉冲涡流（PEC）检查技术，并开发用于PEC和涡流（EC）检查数据的可变多参数条件的分析工具。开发将针对隔热钢管的快速检查，该管道构成了Candu®核反应堆内植物管道平衡的大部分，以及厚壁的钢结构结构，包括日历和盾牌储罐组件（CSTA），高压进给水热交换器和储罐。脉冲涡流（PEC）证明了在大型升降机上进行铁磁材料进行检查的能力。 PEC技术的开发将旨在快速检查能力，以评估钢管壁中的厚度一般腐蚀，而无需昂贵的去除和替换绝缘材料。该项目还将研究多参数涡流信号分析，占渗透率变化的影响以及对PEC应用中的壁厚厚度评估的影响以及EC蒸汽发生器（SG）检查中的多变量参数。通过绝缘检查和监测管道状况可以与预防性维护程序集成，从而增强管道系统管理过程。对PEC和EC信号分析中多参数变化的补偿将增强检测和缺陷大小的能力，从而提高检查可靠性。