Online Monitoring of Concrete Structures in Nuclear Power Plants: Interim Report

Mahadevan, Sankaran¹  Cai, Guowei¹  Agarwal, Vivek¹ 

[1]Idaho National Lab. (INL), Idaho Falls, ID (United States)

关键词: Concrete damage mechanisms;    online monitoring;    Structural Health Monitoring;   

DOI  :  10.2172/1177239
RP-ID  :  INL/EXT--14-34026
PID  :  OSTI ID: 1177239

美国|英语

来源: SciTech Connect

【 摘 要 】

The existing fleet of nuclear power plants in the United States have initial operating licenses of 40 years, and many of these plants have applied for and received license extensions. As plant structures, systems, and components age, their useful life???considering both structural integrity and performance???is reduced as a result of deterioration of the materials. Assessment and management of aging concrete structures in nuclear plants require a more systematic approach than simple reliance on existing code-based design margins of safety. Structural health monitoring is required to produce actionable information regarding structural integrity that supports operational and maintenance decisions. The online monitoring of concrete structures project conducted under the Advanced Instrumentation, Information, and Control Technologies Pathway of the Light Water Reactor Sustainability program at Idaho National Laboratory is seeking to develop and demonstrate capabilities for concrete structures health monitoring. Through this research project, several national laboratories and Vanderbilt University propose to develop a framework of research activities for the health monitoring of nuclear power plant concrete structures that includes the integration of four elements???damage modeling, monitoring, data analytics, and uncertainty quantification. This report briefly discusses activities in this project during October-December, 2014. The most significant activity during this period was the organizing of a two-day workshop on research needs in online monitoring of concrete structures, hosted by Vanderbilt University in November 2014. Thirty invitees from academia, industry and government participated in the workshop. The presentations and discussions at the workshop surveyed current activities related to concrete structures deterioration modeling and monitoring, and identified the challenges, knowledge gaps, and opportunities for advancing the state of the art; these discussions are summarized in this report