THERMAL SCIENCE

International Scientific Journal

Said Agamy

,

Adul Mohsen Metwally

,

Amir Mohammad Al-ramady

,

Sayed Mohamed Elaraby

A RELAP5 MODEL FOR THE THERMAL-HYDRAULIC ANALYSIS OF A TYPICAL PRESSURIZED WATER REACTOR

ABSTRACT
This study describes a RELAP5 computer code for thermal-hydraulic analysis of a typical pressurized water reactor. RELAP5 is used to calculate the thermal hydraulic characteristics of the reactor core and the primary loop under steady-state and hypothetical accidents conditions. New designs of nuclear power plants are directed to increase safety by many methods like reducing the dependence on active parts (such as safety pumps, fans, and diesel generators ) and replacing them with passive features (such as gravity draining of cooling water from tanks, and natural circulation of water and air). In this work, high and medium pressure injection pumps are replaced by passive injection components. Different break sizes in cold leg pipe are simulated to analyze to what degree the plant is safe (without any operator action) by using only these passive components. Also station blackout accident is simulated and the time response of operator action has been discussed.
KEYWORDS
simulation, PWR, ECCS, passive plant, RELAP5
PAPER SUBMITTED: 2008-10-24
PAPER REVISED: 2009-02-24
PAPER ACCEPTED: 2009-06-13
DOI REFERENCE: https://doi.org/10.2298/TSCI1001079A
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2010, VOLUME 14, ISSUE Issue 1, PAGES [79 - 88]
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A RELAP5 model for the thermal-hydraulic analysis of a typical pressurized water reactor

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence