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Study on the Characteristics of Effective Delayed Neutron Fraction (beff) for Pebble-Bed Reactor with Plutonium Fuel

Zuhair, Z and Suwoto, AW and Topan Setiadiapura, TS and Jim C. Kuijper, JCK (2019) Study on the Characteristics of Effective Delayed Neutron Fraction (beff) for Pebble-Bed Reactor with Plutonium Fuel. In: Iran J Sci Technol Trans Sci (2019) 43:3037–3045, 20 January 2019, Received: 20 January 2019 / Accepted: 5 September 2019 / Published online: 1 October 2019 Shiraz University 2019.

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Abstract A current effort focused on mechanisms of maximizing plutonium consumption is one of the solutions to control large stockpile of plutonium produced from nuclear power plants and military programs. The pebble-bed reactor with plutonium fuel is a unique case in the high-temperature reactors intended to reduce the concentration of plutonium that has been accumulated in the world. However, the plutonium core with tendency to produce a lower effective delayed neutron fraction (beff), which is a crucial parameter in reactor safety, should be examined. The purpose of this study is to investigate the characteristics of effective delayed neutron fraction (beff) for pebble-bed reactor with plutonium fuel. The uranium and thorium contents with a 1:1 and 1:2 ratio of heavy metal mass per pebble were combined into the plutonium core to study their effect on the characteristics of beff. A series of calculations with various mass of plutonium per pebble were performed by using the MCNP6 code and ENDF/B-VII library. The beff of pebble-bed reactor with plutonium fuel and its combination with uranium and thorium fuels were analyzed in term of core safety aspect because it could affect the transient behavior into a fatal accident situation. Keywords Effective Delayed neutron fraction Pebble-bed reactor Plutonium fuel MCNP6 ENDF/B-VII

Item Type: Conference or Workshop Item (Paper)
Subjects: Keselamatan dan Keamanan Nuklir
Divisions: Pusat Teknologi dan Keselamatan Reaktor Nuklir
Depositing User: USER PTKRN BATAN
Date Deposited: 07 Aug 2020 03:25
Last Modified: 07 Aug 2020 03:25
URI: http://repo-nkm.batan.go.id/id/eprint/9987

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