Article: Platform independence study of RELAP/SCDAPSIM/MOD3.4 versions bi7 and bik on two AMD and two Intel processors by simulation of a BWR SBO severe accident Journal: International Journal of Nuclear Energy Science and Technology (IJNEST) 2016 Vol.10 No.4 pp.338 - 355 Abstract: In this paper, four different processors, two from the AMD family and two from the Intel family, were used in the simulation of a BWR SBO severe accident to determine if the platform independence requirement is satisfied by the versions bi7 and bik of the best estimate code RELAP/SCDAPSIM MOD3.4 (RSS34). The results showed that the initial transient did not depend on the platform employed in this study, or on the RSS34 version used. Also, RSS is platform independent for practical BWR safety analysis applications, up to the point where the maximum temperature in reactor core reaches 2830 K, although the chemical oxidation reactions occurred at different rates, so different amounts of hydrogen mass were generated. For the severe accident period, the results from the codes SCDAP and COUPLE do depend on code version and processor type. The combination Intel/RSS34bik yields the more consistent results. Inderscience Publishers - linking academia, business and industry through research

Title: Platform independence study of RELAP/SCDAPSIM/MOD3.4 versions bi7 and bik on two AMD and two Intel processors by simulation of a BWR SBO severe accident

Authors: Javier Ortiz-Villafuerte; Enrique Araiza-Martínez

Addresses: Departamento de Sistemas Nucleares, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac, Estado de Mexico 52750, Mexico ' Departamento de Sistemas Nucleares, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac, Estado de Mexico 52750, Mexico

Abstract: In this paper, four different processors, two from the AMD family and two from the Intel family, were used in the simulation of a BWR SBO severe accident to determine if the platform independence requirement is satisfied by the versions bi7 and bik of the best estimate code RELAP/SCDAPSIM MOD3.4 (RSS34). The results showed that the initial transient did not depend on the platform employed in this study, or on the RSS34 version used. Also, RSS is platform independent for practical BWR safety analysis applications, up to the point where the maximum temperature in reactor core reaches 2830 K, although the chemical oxidation reactions occurred at different rates, so different amounts of hydrogen mass were generated. For the severe accident period, the results from the codes SCDAP and COUPLE do depend on code version and processor type. The combination Intel/RSS34bik yields the more consistent results.

Keywords: BWR; boiling water reactors; severe accidents; nuclear accidents; nuclear safety; best estimate codes; SBO; RELAP; SCDAP; COUPLE; AMD processors; Intel processors; nuclear energy; nuclear power; platform independence; simulation; code versions; reactor core temperature; chemical oxidation reactions; hydrogen mass; processor type.

DOI: 10.1504/IJNEST.2016.082004

International Journal of Nuclear Energy Science and Technology, 2016 Vol.10 No.4, pp.338 - 355

Received: 18 May 2016
Accepted: 30 Oct 2016
Published online: 31 Jan 2017 *

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Title: Platform independence study of RELAP/SCDAPSIM/MOD3.4 versions bi7 and bik on two AMD and two Intel processors by simulation of a BWR SBO severe accident

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