Results 61 to 70 of about 362 (143)

Investigation of a Coolant Mixing Phenomena within the Reactor Pressure Vessel of a VVER-1000 Reactor with Different Simulation Tools

open access: yesScience and Technology of Nuclear Installations, 2010
The Institute of Neutron Physics and Reactor Technology (INR) is involved in the qualification of coupled codes for reactor safety evaluations, aiming to improve their prediction capability and acceptability.
V. Sánchez   +3 more
doaj   +1 more source

ROSA/LSTF test and RELAP5 code analyses on PWR steam generator tube rupture accident with recovery actions

open access: yesNuclear Engineering and Technology, 2018
An experiment was performed for the OECD/NEA ROSA-2 Project with the large-scale test facility (LSTF), which simulated a steam generator tube rupture (SGTR) accident due to a double-ended guillotine break of one of steam generator (SG) U-tubes with ...
Takeshi Takeda
doaj   +1 more source

Core Flow Distribution from Coupled Supercritical Water Reactor Analysis

open access: yesScience and Technology of Nuclear Installations, 2014
This paper introduces an extended code package PARCS/RELAP5 to analyze steady state of SCWR US reference design. An 8 × 8 quarter core model in PARCS and a reactor core model in RELAP5 are used to study the core flow distribution under various steady ...
Po Hu, Paul P. H. Wilson
doaj   +1 more source

Uncertainty Analysis of RELAP5-3D© [PDF]

open access: yes, 2012
As world-wide energy consumption continues to increase, so does the demand for the use of alternative energy sources, such as Nuclear Energy. Nuclear Power Plants currently supply over 370 gigawatts of electricity, and more than 60 new nuclear reactors have been commissioned by 15 different countries.
Gertman, Alexandra E   +1 more
openaire   +2 more sources

Numerical Investigation of Startup Instabilities in Parallel-Channel Natural Circulation Boiling Systems

open access: yesScience and Technology of Nuclear Installations, 2010
The behaviour of a parallel-channel natural circulation boiling water reactor under a low-pressure low-power startup condition has been studied numerically (using RELAP5) and compared with its scaled model.
S. P. Lakshmanan, Manmohan Pandey
doaj   +1 more source

New RELAP5-3D Lead and LBE Thermophysical Properties Implementation for Safety Analysis of Gen IV Reactors

open access: yesScience and Technology of Nuclear Installations, 2016
The latest versions of RELAP5-3D© code allow the simulation of thermodynamic system, using different type of working fluids, that is, liquid metals, molten salt, diathermic oil, and so forth, thanks to the ATHENA code integration.
P. Balestra   +3 more
doaj   +1 more source

Design basis accident analysis of a small modular reactor

open access: yesJournal of Thermal Engineering, 2017
The International Reactor Innovative and Secure (IRIS) is an integrated small modular reactor (SMR) designed by Westinghouse Electric Company and a consortium of organizations.
Jivan Khatry, Fatih Aydogan
doaj  

Improvement and Validation of System Code for Thermal-hydraulic Analysis of In-pool Passive Residual Heat Removal System

open access: yesYuanzineng kexue jishu
After Fukushima nuclear accident, the passive concept is widely adopted in the thermal safety design of advanced nuclear reactors. The in-pool passive residual heat removal system (PRHRS) can also provide security guarantee for the domestic reactor ...
LIAN Qiang1, 2, 3, ZHU Longxiang1, 2, 3, TANG Simiao1, 2, 3, HUANG Tao4, ZHANG Yong4, PAN Liangming1, 2
doaj   +1 more source

RELAP5-3D Code Validation for RBMK Phenomena [PDF]

open access: yes, 1999
The RELAP5-3D thermal-hydraulic code was assessed against Japanese Safety Experiment Loop (SEL) and Heat Transfer Loop (HTL) tests. These tests were chosen because the phenomena present are applicable to analyses of Russian RBMK reactor designs. The assessment cases included parallel channel flow fluctuation tests at reduced and normal water levels, a ...
openaire   +4 more sources

Input Calibration and Validation of RELAP5 Against CIRCUS-IV Single Channel Tests on Natural Circulation Two-Phase Flow Instability

open access: yesScience and Technology of Nuclear Installations, 2015
RELAP5 is a system thermal-hydraulic code that is used to perform safety analysis on nuclear reactors. Since the code is based on steady state, two-phase flow regime maps, there is a concern that RELAP5 may provide significant errors for rapid transient ...
Viet-Anh Phung   +3 more
doaj   +1 more source

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