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MODIFICATION AND DEVELOPMENT OF RESEARCH REACTOR CORE

E. M. Elsherrbiny
Reactor Department, Nuclear Research Center. Inshaas. EGYPT

F. A. Gaber
NCNSR, AEA, Cairo, Egypt

A. F. Ayoub
Faculty of Engineering, Cairo University, Giza, Egypt

Sinopsis

The goal of this work is to choose the best method for up grading research reactor power. Two types of fuel elements were studied: pin type square lattice and IRI-2M fuel assemblies (with the use of beryllium reflector). This paper presents a code developed for core heat transfer calculations of the research reactor up grading through the previously mentioned two types of fuel elements: The results showed that when using IRT-2M fuel assemblies for up grading core, it has inherently stable operating characteristics due to accidental increase in reactivity than that when using the fuel pin type.

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