【Technical Introduction】
The Decommission Engineering Management System (DEMS) consists of four subsystems: Waste Inventory (DEMS-1), Dismantling Engineering Design (DEMS-2), Waste Tracking Management (DEMS-3), and Work Packages & Engineering Information (DEMS-4), as shown in Figure 1.
The system includes auxiliary tools to assist personnel in creating detailed waste inventory information using the Room by Room (R/R) method and integrates decommissioning plans into reports to effectively estimate dismantling costs. Additionally, the system's modular design allows the creation of on-site logistics workstations, which can be flexibly adjusted according to user needs, including adding or removing modules and adjusting logistics sequences to suit different processes, ensuring traceability of dismantled waste. The system presents all data through visualized statistical charts and graphs, providing managers with real-time information. This assists in the management of project progress, waste storage, and radiation dosage, ensuring data accuracy and enhancing operational efficiency, as shown in Figure 2.
Fig. 1. DEMS Architecture Diagram
Fig. 2. DEMS Workflow Diagram
【Project Planning/Technical Applications】
The Chinshan Nuclear Power Plant obtained decommissioning approval on July 12, 2019. To enhance domestic capabilities in decommissioning technologies, Chinshan Nuclear Power Plant has partnered with the National Atomic Research Institute to implement the "Nuclear Power Plant Dismantling and Waste Tracking Management Technology Development" project. The project involves the establishment of the DEMS to assist with tasks such as "estimating waste processing volumes," "planning decommissioning projects," "calculating decommissioning costs," "tracking waste treatment processes," and "monitoring project progress."
The dismantling of Chinshan Nuclear Power Plant's 69KV switchyard, Unit 1 and Unit 2 main generators and their auxiliary equipment have been successfully completed. Throughout these activities, several thousand waste data entries and tens of thousands of waste treatment records have been accumulated in the DEMS, effectively assisting with audit completion and progress reporting. Furthermore, the system is scheduled to be applied to other upcoming dismantling projects, including the "Dismantling Project for Equipment and Piping within the Nitrogen Tank Room," the "Dismantling Project for the Main Steam Turbines, Feedwater Heaters, and Auxiliary Equipment of Units 1 & 2," and the "Dismantling Project for the Feedwater Hydrogen Generation System Equipment within and outside the Off-Gas Building."
【Future Development】
Based on feedback from practical experience, the DEMS will be enhanced by integrating mobile technology to better meet the demands of on-site operations. Once fully refined and matured, the application of DEMS will not be limited to nuclear decommissioning tasks. Its modular design and high flexibility make it suitable for commercialization and cross-industry applications. The system can be used for the dismantling and waste management of other large industrial facilities, such as chemical plants and thermal power plants. Future plans include expanding its reach to domestic and international markets, creating business opportunities and development prospects in various engineering management fields, and providing advanced solutions globally.
【Contact Information】
Name：Hsin-Hsien Huang
Tel：03-4711400 Ext.3726
E-mail：tom2003426@nari.org.tw
|
| |
|
|
|
|
| |
|
|
|
