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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Analise de um acidente hipotético de perda de vazão forçada em um reator tipo LMFBR

Moreira, Maria de Lourdes, Instituto de Engenharia Nuclear 10 1900 (has links)
Submitted by Marcele Costal de Castro (costalcastro@gmail.com) on 2017-10-02T18:44:07Z No. of bitstreams: 1 MARIA DE LOURDES MOREIRA M.pdf: 3361956 bytes, checksum: fc6fe64c1ff4d4f93357ba0eae51acc9 (MD5) / Made available in DSpace on 2017-10-02T18:44:07Z (GMT). No. of bitstreams: 1 MARIA DE LOURDES MOREIRA M.pdf: 3361956 bytes, checksum: fc6fe64c1ff4d4f93357ba0eae51acc9 (MD5) Previous issue date: 1995-10 / Este trabalho utiliza um modelo de calculo para se analisar um acidente hipotético de perda total de vazão forçada no vaso de um reator. São analisadas cinco fases do acidente: Circulação Natural, Ebulição Subresfriada, Ebulição Nucleada, Secagem do Núcleo e Derretimento do Revestimento. A difusão radial de calor no combustível, revestimento, canal médio de refrigeração do núcleo e câmaras superior e inferior e representada por um modelo de parâmetros concentrados. Os cálculos foram efetuados utilizando-se dados de um protótipo de reator LMFBR. / This report uses a model to analyse a postulated accident scenario involving loss of forced flow in the reactor vessel of a LMFBR. Five phases of the accident are analysed: Natural Circulation, Subcooled Boiling, Nucleate Boiling, Core Dryout and Cladding melt. The heat conduction in the fuel, cladding, coolant and lower and upper plenum are calculated by a lump-parameter model. Physical data of a prototype LMFBR reactor were used for the calculation.

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