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A general risk Assessment of flammable gas detectors / Mustapha Toutaoui 

Public ISBD Titre : A general risk Assessment of flammable gas detectors Type de document : texte imprimé Auteurs : Mustapha Toutaoui, Auteur ; H. M. N. Raafat, Directeur de thèse Editeur : Birmingham : University of Aston Année de publication : 1984 Importance : 98 f. Présentation : ill. Format : 27 cm. Note générale : Mémoire de Magister : Occupational Health and Safety : Birmingham, University of Aston : 1984 Annexe f. 99 - 115 . Bibliogr. f. 116 - 120 Langues : Anglais (eng) Mots-clés : Occupational  --  health  --  safety  ;  Flammable  --  gas  ;  Gas  detection  system  ANOVA  table Index. décimale : M006084 Résumé : Flammable gas detectors provide the means whereby personnel concerned with health and safety activities can easily determine the presence of and evaluate the concentration of combustible gases or vapours in the workplace. This project attempts to outline the limitations that a user should consider and recognise when using a flammable gas detector. features such as sensitivity, reliability and intrinsic safety were studied. Failure mode analysis and fault tree analysis techniques ware used. The criticality estimates obtained suggested that some corrective measures were needed. Initiators arranged in redundant configurations, use of "de-bugging" or "Burn-in" process, and regular maintenance by competent personnel, was shown to be vital for achieving the high levels of reliability associated with the safety system. A statistical analysis of past data was undertaken and relationships among the different variables were shown. An experimental programme was carried out, using pellister type catalytic detectors. Examination of their susceptibility and behaviour when exposed to different temperature were carried out. Two flammable gases were used. These were acetone and butanol. For both of them a decrease in the amount oxidised was obtained as temperature was increased. Also, a study of the basic requirements for the use of flammable gas detectors was outlined. A general risk Assessment of flammable gas detectors [texte imprimé] / Mustapha Toutaoui, Auteur ; H. M. N. Raafat, Directeur de thèse . - Birmingham (Birmingham) : University of Aston, 1984 . - 98 f. : ill. ; 27 cm. Mémoire de Magister : Occupational Health and Safety : Birmingham, University of Aston : 1984 Annexe f. 99 - 115 . Bibliogr. f. 116 - 120 Langues : Anglais (eng) Mots-clés : Occupational  --  health  --  safety  ;  Flammable  --  gas  ;  Gas  detection  system  ANOVA  table Index. décimale : M006084 Résumé : Flammable gas detectors provide the means whereby personnel concerned with health and safety activities can easily determine the presence of and evaluate the concentration of combustible gases or vapours in the workplace. This project attempts to outline the limitations that a user should consider and recognise when using a flammable gas detector. features such as sensitivity, reliability and intrinsic safety were studied. Failure mode analysis and fault tree analysis techniques ware used. The criticality estimates obtained suggested that some corrective measures were needed. Initiators arranged in redundant configurations, use of "de-bugging" or "Burn-in" process, and regular maintenance by competent personnel, was shown to be vital for achieving the high levels of reliability associated with the safety system. A statistical analysis of past data was undertaken and relationships among the different variables were shown. An experimental programme was carried out, using pellister type catalytic detectors. Examination of their susceptibility and behaviour when exposed to different temperature were carried out. Two flammable gases were used. These were acetone and butanol. For both of them a decrease in the amount oxidised was obtained as temperature was increased. Also, a study of the basic requirements for the use of flammable gas detectors was outlined.

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité	Spécialité	Etat_Exemplaire
M006084	M006084	Papier	Bibliothèque centrale	Mémoire de Magister	Disponible

Documents numériques

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