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Development of System Integration Technology for Integral Reactor

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Development of System Integration Technology for Integral Reactor KR0000044 KAERI/RR-1896/98 7| # 7H Development of Advanced Reactor Technology Development of System Integration Technology for Integral" Reactor 71 31/30 KAERI/RR-1896/98 7| ft 7R-V Development of Advanced Reactor Technology Development of System Integration Technology for Integral Reactor 7} 1999. 3. xi- A S. o| CD Ot I. n 330 SMART 7] o) 3. 3. ^-g-^r m. SMART 4 SMART 1- 71 Codes & Standards Codes & Standards Work Breakdown Structure 4. SMART - II - 5. SMART SMART i%7\ 6. SMART SMART IV. 7| ^ Eamed Value - iii - SMART 7B^^^1^ -f^sg: 4 7] SMART o^^ ^^# ^f ^]f^]^(H^ ft ^=. CDEE 91 yo^^-# MED 91 MSF # 71 ^-^ SMART - IV - V. SMART 7) - v - SUMMARY I. Project Title Development of System Integration Technology for Integral Reactor n. Objectives and Importance of the Project 1. Objectives The prime objective of this project is to integrate the conceptual design of an integral reactor, SMART producing thermal energy of 330 MW, which will be utilized to supply energy for seawater desalination and small-scale power generation. This project also aims to develop design integration technology for effective design of the reactor. 2. Importance In developing and designing a nuclear reactor, several technical areas should be systematically coordinated and integrated to produce a single valuable product. In this regard, the integration technology plays a key role since the interface coordination, control and management of those technical areas directly impacts on the achievement of the goal. The reactor design primarily requires the establishment of the integrated goal, design requirements and bases, and the plan of design process. Furthermore, the design can be effectively carried out and the results can be integrated in the useful form when several technologies are systematically interconnected and utilized. They include technology for control and coordination of design information flow between design areas and design processes, management technology for the utilization of tremendous design information and documents, technology for the - vi - performance evaluation of design, and process management technology. The development of all these technologies and its application to design is thus essentially emphasized for the successful development of the indigenous reactor design and associated technologies. m. Scope and Contents of the Project The scopes and contents of this project are related to the effective performance of the conceptual design of SMART through the coordinated interactions between technical areas. The include the establishment of design requirements and bases, the evaluation of codes & standards to be applied to the design, the coordination and management of design, the integration of design, preliminary economical evaluation of SMART application, and the planning of required activities for the continuous design works. 1. Establishment of Design Requirements and Bases • Establishment of Preliminary Items for Design Requirements and Bases • Evaluation and Establishment of Design Requirements and Bases 2. Evaluation of Codes & Standards for Design Application • Survey of Existing Codes & Standards • Evaluation of Applicability of Existing Codes & Standards • Proposal for Development of Codes & Standards 3. Development of Design Integration and Management Technology • Evaluation and Coordination of Design Activities • Establishment of Design Schedule and Work Breakdown Structure • Coordination of Design Information Flow and Management of Design Process • Development of Work Performance Evaluation System - VII - 4. Integration of Conceptual Design of SMART • Establishment and Integration of Requirements for Operation, Safety, Functions and Performance of Systems • Integration of Conceptual Design • Management of Design Technology and Information 5. Preliminary Economical Evaluation of SMART Application • Survey of Economical Evaluation Methodology for Nuclear Seawater Desalination • Establishment of Economical Evaluation Methodology • Economical Evaluation of Seawater Desalination with SMART 6. Planning for Next-Stage Design • Establishment of Design Schedule and Process • Planning of Tests and Experiments for Technology Verification • Planning of Computer Codes Development IV. Results Top-tier requirements with respect to the reactor design were established to maximize the utilization of the merits and characteristics of integral reactor. Preliminary design requirements and bases for each functional design area were individually set up so that they satisfy the top-tier requirements. The interface conditions were then finally considered to modify and complement those design requirements and bases. The reactor design requires the application of the codes & standards. Unfortunately, the codes & standards applicable to the design of integral reactor have not been established yet in the country. The applicability of the existing codes & standards and regulatory laws established for loop-type reactor to the integral reactor has thus analyzed and evaluated. The results of - VIII - the evaluation came up with the conclusion that the general areas are mostly applicable but some are to be partly or not possibly applicable to the integral-type reactor due to it's structural characteristics of integral reactor. Also as the results, considerations and directions were recommended for the development and establishment of those codes & standards that can be applicable to the design of integral reactor. To effectively control and manage the tremendous amount of design activities, it is necessary to measure and evaluate the work performance. In order to develop the work performance evaluation technology, the Earned Value concept which is widely utilized in USA was adopted and then complemented by reflecting our design mechanism. The use of this evaluation system made it possible to analyze the work performance without spending much time, and thus contributed to enhance the effectiveness of design management by directly reflecting the evaluation results to the design activities. Furthermore, the study on introduction of the con-current engineering concept to effectively control the design process, technical information, manpower, and cost made it possible to establish the fundamental bases for the project management. The integration of SMART design purposes to integrate and evaluate the technical feasibility of the design concept and implemented technologies. The evaluation of the design concept against the preliminarily established design requirements and bases, and design goals proves the technical feasibility. The eventual technical feasibility can be proven through the performance and safety analyses. To this end, limiting transients and accidents were selected, and analyses were performed against them. The results showed that the design concepts are acceptable by satisfying the limiting conditions for the steady state cases. However, it was evaluated that minor modifications in some design concepts are needed to satisfy the limiting conditions for certain transient and accident cases. - ix - The preliminary economical evaluation was performed for the applicability of SMART to the seawater desalination. The computer program, CDEE and evaluation methodology developed by IAEA were selected for the evaluation. The evaluation was carried out for the thermal desalination processes, MSF and MED, with respect to the optimal energy utilization by considering the energy extraction methods from turbine. It was found that the MED process with the heat energy extraction from the middle of turbine is the most economical concept by producing the target of water product and generating the maximum electricity. The reactor design can be effectively performed only when a reliable design schedule is available. The design schedule and process for the next phase were thus established based on the them of the conceptual design phase. Furthermore, established were the plan for the development of computer codes to be utilized for the SMART design, and the plan for verification tests of implemented technologies. V. Proposal for Application The concept of SMART, it's technologies, and design requirements and design bases integrated in this project are to be used as bases for the basic design of the next phase. The design plan will be used as the basic schedule for the basic design of the next phase, towards achieving the design goal. The results of preliminary economical evaluation for the seawater desalination are expected to be utilized for the suggestion of the direction of seawater desalination by using nuclear energy. Furthermore, the results of the applicability evaluation of the codes & standards will be the valuable information for establishing the codes & standards that are applicable to the design of integral reactor. - x - CONTENTS Summary (Korean) i (English) vi List of Tables xv List of Figures xvii Chapter 1. Introduction 1 Chapter 2. Design Requirements and Bases for Integral Reactor 5 1. Introduction 5 2. Design Requirements and Bases for SMART 6 Chapter 3. Evaluation of Codes & Standards for Design Application 23 1. Introduction 23 2. Reactor Design and Codes & Standards 23 3. Evaluation of Applicability of Existing Codes & Standards 27 4. Proposal for Development of Codes & Standards 40 Chapter 4. Development of Design Integration and Management Technology 45 1. Introduction 45 2. Establishment of Design Schedule and WBS 47 3. Development of Performance Evaluation System 50 4. Process Modeling Methodology for Concurrent Design 56 Chapter 5.
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