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: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=686778
• 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.

该项目将专注于脉冲涡流(PEC)检测技术的开发，以及针对脉冲涡流(EC)和脉冲涡流(EC)检测数据的可变多参数条件分析工具的开发。开发的目标将是快速检查绝缘钢管，它构成了CANDU®核反应堆和厚壁钢结构中工厂管道平衡的一大部分，包括Calandria和屏蔽罐组件(CSTA)、高压给水热交换器和储罐。脉冲涡流(PEC)已被证明具有在大提离时检测导电铁磁材料的能力。PEC技术的发展将朝着快速检测能力的方向发展，以评估钢管壁厚的全面腐蚀，而不需要昂贵的拆卸和更换绝缘材料。该项目还将研究多参数涡流信号分析，考虑渗透率变化和电阻率对PEC应用中壁厚评估的影响，以及EC蒸汽发生器(SG)检查中的多变量参数。通过绝缘对管道状况的检查和监控可以与预防性维护计划相结合，从而增强管道系统管理流程。补偿PEC和EC信号分析中的多参数变化将增强检测和缺陷大小确定能力，提高检测可靠性。