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Publicatie Laka-bibliotheek:
Probabilistic accident consequence uncertainty analysis. Early health effects uncertainty assessment. Vol.2. Appendices (NUREG/CR-6545) (1997)

AuteurUS NRC, CEC
Datumdecember 1997
Classificatie 6.01.3.70/60 (VEILIGHEID - RISICO-ANALYSES & -BELEVING)
Voorkant

Uit de publicatie:

Summary of the MACCS and COSYMA Consequence Codes

Introduction

The information developed in this study will be used to perform uncertainty studies 
using the European Commission (EC) consequence code COSYMA and the US Nuclear 
Regulatory Commission (USNRC) code MACCS. COSYMA and MACCS model the offsite 
consequences of postulated severe reactor accidents that release a plume of 
radioactive material to the atmosphere. These codes model the transport and 
deposition of radioactive gases and aerosols into the environment and the potential 
resulting human health and economic consequences. They calculate the health 
effects, impact of countermeasures and economic costs of the releases. The 
processes considered in the calculations, and the routes of exposure following 
accidental releases to atmosphere, are illustrated in Figure A-1. The calculations 
are divided into a number of steps, illustrated in Figure A-2. COSYMA and MACCS 
are modular codes, with different modules addressing the different stages of the 
calculation. However, while Figure A-1 illustrates the steps in the calculation, 
the modules of the codes do not correspond exactly with the boxes shown.

The following sections give brief descriptions of the COSYMA and MACCS codes.

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