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Published in:

Volume 7 Issue 9
September-2020
eISSN: 2349-5162

Unique Identifier

JETIR2009026

Page Number

214-218

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Title

Determination of Reproduction and Thermal Utilization Factors for The Nigeria Research Reactor-1(NIRR-1)

ISSN

2349-5162

Cite This Article

"Determination of Reproduction and Thermal Utilization Factors for The Nigeria Research Reactor-1(NIRR-1)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 9, page no.214-218, September-2020, Available :http://www.jetir.org/papers/JETIR2009026.pdf

Abstract

ABSTRACT: The present study was conducted to investigate the behavior of the Nigeria Research Reactor-1 (NIRR-1) under the variation of moderator-to-fuel ratio on reproduction factor (η) and thermal utilization factor(f). The results show that the thermal utilization factor(f) was 5.55 while Reproduction factor (ɳ) was 4.73. When plotted, the graph of both the moderator and fuel ratios against moderator-to-fuel ratio demonstrated a good behavior and stability of the reactor at a moderator- to- fuel ratio of 165. It has also been observed that reducing moderator-to-fuel ratio from its present 197 to 165 have same flux and reactor stability for an MNSR reactor like NIRR-1. This could be attributed to the fact that under moderated reactors are stable against changes in temperature (negative coefficient) while over moderated reactors are unstable against changes in the temperature (positive coefficient) in the reactivity of the core. We therefore conclude that moderator-to-fuel ratios of 197 and 165 are the best ratios to be used for efficient and safe operation of the NIRR-1.

Key Words

Keywords: Miniature Neutron Source Reactor (MNSR), over moderation, under moderation.

Cite This Article

"Determination of Reproduction and Thermal Utilization Factors for The Nigeria Research Reactor-1(NIRR-1)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 9, page no. pp214-218, September-2020, Available at : http://www.jetir.org/papers/JETIR2009026.pdf

Publication Details

Published Paper ID: JETIR2009026
Registration ID: 300254
Published In: Volume 7 | Issue 9 | Year September-2020
DOI (Digital Object Identifier):
Page No: 214-218
ISSN Number: 2349-5162

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Cite This Article

"Determination of Reproduction and Thermal Utilization Factors for The Nigeria Research Reactor-1(NIRR-1)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 9, page no. pp214-218, September-2020, Available at : http://www.jetir.org/papers/JETIR2009026.pdf




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