Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Thermal Insulation as Passive Fire Protection for Hydrocarbon Process Equipment?
The use of thermal insulation and passive fire protection (PFP) raises concerns in the process industry due to potential corrosion under insulation (CUI). Corrosion related incidents is one of the costliest problems facing the oil and gas industry today, especially in aging facilities. To limit corrosion related to CUI, an improved insulation methodology has been developed. An air gap of 25 mm is introduced to prevent direct contact with potentially soaked insulation. This improved method requires more space and may therefore not allow for the previously added 50 mm layer of PFP. To make space for the PFP extensive construction work is needed. To demonstrate that thermal insulation may provide sufficient fire protection without PFP would therefore be beneficial. This has recently been done for 16 mm thick steel column walls, representing a significant heat sink. The objective of the present work was to demonstrate the PFP performance of regular thermal insulation for thinner steel thicknesses and investigate the thermal insulation “breakdown” temperatures. A small-scale mock-up simulating a part of a typical distillation column, with the recommended 25 mm air gap, was exposed to small-scale jet fires. The steel disks of diameter 320 mm were insulated radially and on the top surface to minimize external heat losses. The testing was done in a horizontal orientation to minimize internal convective heat losses, i.e. a conservative approach. A 28 kW cylindrical propane burner aligned vertically, exposed the downward facing mock-up cladding. Thermocouples were used to record the temperature development in the cladding, insulation and the internal steel plates. The test set-up was modified to give stable heat flux exposure levels. Results are presented for four different steel wall thicknesses; 3 mm, 6 mm, 12 mm and 16 mm, exposed to heat fluxes in the range 250 – 350 kW/m2. Requiring the highest recorded temperature in the steel plate not to exceed 400 °C during the first 30 minutes was used as the performance ...
Thermal Insulation as Passive Fire Protection for Hydrocarbon Process Equipment?
The use of thermal insulation and passive fire protection (PFP) raises concerns in the process industry due to potential corrosion under insulation (CUI). Corrosion related incidents is one of the costliest problems facing the oil and gas industry today, especially in aging facilities. To limit corrosion related to CUI, an improved insulation methodology has been developed. An air gap of 25 mm is introduced to prevent direct contact with potentially soaked insulation. This improved method requires more space and may therefore not allow for the previously added 50 mm layer of PFP. To make space for the PFP extensive construction work is needed. To demonstrate that thermal insulation may provide sufficient fire protection without PFP would therefore be beneficial. This has recently been done for 16 mm thick steel column walls, representing a significant heat sink. The objective of the present work was to demonstrate the PFP performance of regular thermal insulation for thinner steel thicknesses and investigate the thermal insulation “breakdown” temperatures. A small-scale mock-up simulating a part of a typical distillation column, with the recommended 25 mm air gap, was exposed to small-scale jet fires. The steel disks of diameter 320 mm were insulated radially and on the top surface to minimize external heat losses. The testing was done in a horizontal orientation to minimize internal convective heat losses, i.e. a conservative approach. A 28 kW cylindrical propane burner aligned vertically, exposed the downward facing mock-up cladding. Thermocouples were used to record the temperature development in the cladding, insulation and the internal steel plates. The test set-up was modified to give stable heat flux exposure levels. Results are presented for four different steel wall thicknesses; 3 mm, 6 mm, 12 mm and 16 mm, exposed to heat fluxes in the range 250 – 350 kW/m2. Requiring the highest recorded temperature in the steel plate not to exceed 400 °C during the first 30 minutes was used as the performance ...
Thermal Insulation as Passive Fire Protection for Hydrocarbon Process Equipment?
Gunnarshaug, Amalie (Autor:in)
01.01.2018
Hochschulschrift
Elektronische Ressource
Englisch
Study of Industrial Grade Thermal Insulation as Passive Fire Protection up to 1200 °C
| BASE | 2018
| Europäisches Patentamt | 2015
Online Contents | 2003
| Emerald Group Publishing | 1993
British Library Online Contents | 2003