An – Actinides

Abbreviations________________________________________________________________

Abbreviations

An – Actinides

APOLLO (CEA) – Neutronic calculations code based on deterministic modelling for cells and assemblies

ATWS – Anticipated Transients Without Scram

AUTOP – AUTOProtection (APOLLO2 self-shielding module) AVR – Arbeitsgemeinschaft Versuch Reaktor

BG – Breeding Gain

BWR – Boiling Water Reactor

CEA – Commissariat à l'Énergie Atomique CFD – Computational Fluid-Dynamics CP – Coated Particle

D-LOCF – Depressurized Loss of Forced Circulation DBA – Design Base Accident

DIMNP – Dipartimento di Ingegneria Meccanica, Nucleare e della Produzione DIREKT/THERMIX – German thermal hydraulics code

DRAGON – European Prototype HTGR at Winfrith in England built and operated by UKAEA

DU – Depleted Uranium

ECCS – Emergency Core Cooling System EFPD – Effective Full Power Days

EU – European Union

EURATOM – European Atomic Energy Community FIMA – Fission per Initial Metal Atom

FP6 – 6

Framework Program FP – Fission Products

GCFR – Gas Cooled Fast Reactor

GIF – Generation IV International Forum

GRSAC – Graphite Reactor Severe Accident Code HEX – Hexagonal

HFR – High Flux Reactor HLW – High Level Waste HM – Heavy Metal (Actinides)

HTGR – High Temperature Gas cooled Reactor HTR – High Temperature Reactor

IT – Italy

LFR – Lead-cooled Fast Reactor

LMFBR – Liquid Metal Fast Breeder Reactor Ln – Lanthanides

LOCF – Loss of Forced Circulation LOM – Level Of Mine

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Abbreviations________________________________________________________________

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LOMBT – Level Of Mine Balancing Time

LWR – Light Water Reactor MA – Minor Actinides

MC – Monte Carlo

MCNP – A general Monte Carlo N-Particle transport code, Version 5 MOX – Mixed OXide

MSR – Molten Salt Reactor NL – The Netherlands

NRG – Nuclear Research and consultancy Group OTTO – Once Through Then Out

P-LOFC – Pressurized Loss of Forced Circulation PANTHER – reactor physics code

PANTHERMIX – Reactor and thermo-hydraulic code performed for HTR PBMR – Pebble Bed Modular Reactor

PCU – power conversion system

PUMA – European project on Plutonium and Minor Actinides management in THTR

PWR – Pressurized Water Reactor

RCCS – Reactor Cavity Cooling Systems RCS – Reactor Control System

RG – Reactor Grade

RPV – Reactor Pressure Vessel RRS – Reactor Recirculation System RS – Recirculation System

RSS – Reactor Shutdown System SAS – Small Absorbed System SCS – Shutdown Cooling System

SCWR – Super-Critical Water-cooled Reactor SFR – Sodium-cooled Fast Reactor

SHEM – Santamarina Hfaiedh Energy Mesh SME – Small and Medium Enterprises

SNF – Spent Nuclear Fuel

STP – Standard Temperature and Pressure TRISO – TRiple ISOtropic Coated Particles TRU – TRans-Uranics

TUD – Technische Universiteit Delft UK – United Kingdom

USA – Unite of States of America

VHTR – Very High Temperature Reactor XMAS – X-cross section Mesh Scheme WG – Weapons Grade

WIMS – Winfrith Improved Multigroup Scheme – Deterministic nuclear code