Investigation of TASS/SMR Capability to Predict a Natural Circulation in the Test Facility for an Integral Reactor

Young-Jong Chung,Sung-Won Lim,Kyoo-Hwan Bae

doi:10.1155/2014/181802

Abstract

System-integrated modular advanced reactor (SMART) is a small-sized advanced integral type pressurized water reactor (PWR) with a rated thermal power of 330 MW. It can produce 100 MW of electricity or 90 MW of electricity and 40,000 ton of desalinated water concurrently, which is sufficient for 100,000 residents. The design features contributing to safety enhancement are basically inherent safety improvement and passive safety features. TASS/SMR code was developed for an analysis of design based events and accidents in an integral type reactor reflecting the characteristics of the SMART design. The main purpose of the code is to analyze all relevant phenomena and processes. The code should be validated using experimental data in order to confirm prediction capability. TASS/SMR predicts well the overall thermal-hydraulic behavior under various natural circulation conditions at the experimental test facility for an integral reactor. A pressure loss should be provided a function of Reynolds number at low velocity conditions in order to simulate the mass flow rate well under natural circulations.

Highlights

Many countries have recently taken an interest in small and medium sized reactors
system-integrated modular advanced reactor (SMART), which adopts a sensible mixture of new innovative design features and proven technologies, is a small-sized advanced integral type pressurized water reactor (PWR) with a rated thermal power of 330 MW
The main objective of this study is to validate the capability of TASS/SMR code to predict the overall thermal-hydraulic behaviors under various natural circulation conditions for an experimental facility, OSU-MASLWR, which is an integral test facility for simulation of an integral type reactor MASLWR

Summary

Introduction

Many countries have recently taken an interest in small and medium sized reactors. SMART, which adopts a sensible mixture of new innovative design features and proven technologies, is a small-sized advanced integral type PWR (pressurized water reactor) with a rated thermal power of 330 MW. It can produce 100 MW of electricity, or 90 MW of electricity and 40,000 ton of desalinated water concurrently, which is sufficient for 100,000 residents. The passive residual heat removal systems remove the core decay heat through natural circulation at any design basis events and have the capability of keeping the core undamaged for 72 hours without any corrective actions by operators

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Conclusion