Buildings located in industrial gas production areas are normally designed to withstand explosion pressures from a design accidental event in the plant. To protect personnel and equipment inside buildings, installation of shock valves is the normal procedure. Experience with shock valves is, however, that they require maintenance, are expensive, have corrosion problems, and add pressure losses in the ventilation system. Alternatives are to reinforce fire and gas dampers in areas where shock pressures are moderate. Design pressures and possible effects of damping chambers and location of dampers are important variables. The paper summarizes some of the main results and conclusions provided from a study done for the Norwegian company Hydro Oil & Energy. The main conclusions drawn are as follows: Fortification shock waves have normally significantly shorter durance compared to explosion pressures from a typical accident in a gas process plant, and fortification design guidelines should not be used directly. Dampers should be designed to withstand pressures 1.5–1.8 times the side-on shock pressures unless the dampers are mounted flush with the building wall or roof, due to the reflecting shock pressure from a closed damper mounted inside a ventilation duct.
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ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference
July 23–27, 2006
Vancouver, BC, Canada
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4755-1
PROCEEDINGS PAPER
Ventilation Duct Fire Dampers and Shock Valves Available to Purchase
Bent A. Borresen,
Bent A. Borresen
Nonconsult, Inc., Sandvika, Norway
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Stein Erik Uldalen
Stein Erik Uldalen
Hydro Oil & Energy, Oslo, Norway
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Bent A. Borresen
Nonconsult, Inc., Sandvika, Norway
Olav Saeter
Hydro Oil & Energy, Oslo, Norway
Stein Erik Uldalen
Hydro Oil & Energy, Oslo, Norway
Paper No:
PVP2006-ICPVT-11-93963, pp. 411-418; 8 pages
Published Online:
July 23, 2008
Citation
Borresen, BA, Saeter, O, & Uldalen, SE. "Ventilation Duct Fire Dampers and Shock Valves." Proceedings of the ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. Volume 4: Fluid Structure Interaction, Parts A and B. Vancouver, BC, Canada. July 23–27, 2006. pp. 411-418. ASME. https://doi.org/10.1115/PVP2006-ICPVT-11-93963
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