Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pneumatic impact ignition of sebum oil film in high-pressure oxygen
Whenever oxygen systems are assembled or maintained a risk of introducing contamination arises. Potential contaminants include oils from a person's hands and body left behind in the form of fingerprints. The oil on the surface of skin is a complex mixture of sebum oil, lipids sweat and environmental materials. In high pressure systems, heat from rapid pressurisation is a high-risk ignition mechanism for the sebum contaminant. The rapid pressurisation or pneumatic impact ignition of hydrocarbon based oil contaminant in high pressure oxygen has been widely studied. This study investigated the rapid pressurisation ignition of sebum contaminant in high pressure oxygen. The pneumatic impact ignition test of sebum contaminant was conducted according to NASA-STD-6001 (National Aeronautics and Space Administration Standard 6001) Test 14. The ends of stainless steel cylindrical rods were coated with synthetic sebum at varying surface concentrations and impacted with 27.6 MPa oxygen. The results show that there is a threshold level of sebum contaminant for ignition by rapid pressurisation The level of sebum contaminant that can be expected to be deposited by handling oxygen system components, an analysis on sebum oil properties and associated fire hazards, and the threshold levels of sebum contaminant required for rapid pressurisation ignition in a high pressure oxygen system are presented and discussed.
Pneumatic impact ignition of sebum oil film in high-pressure oxygen
Whenever oxygen systems are assembled or maintained a risk of introducing contamination arises. Potential contaminants include oils from a person's hands and body left behind in the form of fingerprints. The oil on the surface of skin is a complex mixture of sebum oil, lipids sweat and environmental materials. In high pressure systems, heat from rapid pressurisation is a high-risk ignition mechanism for the sebum contaminant. The rapid pressurisation or pneumatic impact ignition of hydrocarbon based oil contaminant in high pressure oxygen has been widely studied. This study investigated the rapid pressurisation ignition of sebum contaminant in high pressure oxygen. The pneumatic impact ignition test of sebum contaminant was conducted according to NASA-STD-6001 (National Aeronautics and Space Administration Standard 6001) Test 14. The ends of stainless steel cylindrical rods were coated with synthetic sebum at varying surface concentrations and impacted with 27.6 MPa oxygen. The results show that there is a threshold level of sebum contaminant for ignition by rapid pressurisation The level of sebum contaminant that can be expected to be deposited by handling oxygen system components, an analysis on sebum oil properties and associated fire hazards, and the threshold levels of sebum contaminant required for rapid pressurisation ignition in a high pressure oxygen system are presented and discussed.
Pneumatic impact ignition of sebum oil film in high-pressure oxygen
Tapia, Susana A. (Autor:in) / Smith, Sarah R. (Autor:in) / Hshieh, Fu-Yu (Autor:in) / Stoltzfus, Joel M. (Autor:in)
2006
9 Seiten, 6 Bilder, 3 Tabellen, 13 Quellen
Aufsatz (Konferenz)
Englisch
Pneumatic impact ignition of selected polymers in high-pressure oxygen environments
| British Library Online Contents | 2007
Pneumatic impact ignition of selected polymers in high-pressure oxygen environments
| Online Contents | 2007
A further study of factors affecting pneumatic-impact ignition of polymers
| British Library Online Contents | 2006