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Understanding vented gas explosions

Abstract

The report is an introduction to vented gas explosions for nonspecialists, particularly designers of plants for flammable gases and liquids. The phenomena leading to pressure generation in vented gas explosions in empty and congested rooms are reviewed. The four peak model of vented gas explosions is presented with simple methods to predict the values of the individual peaks. Experimental data on the external explosion of dust and gas explosions is discussed. The empirical equation relating the internal and external peak pressures in vented dust explosions is shown to be valid for gas explosion tests in 30 m{sup 3} and 550 m{sup 3} chambers. However, the difficulty of predicting the internal peak pressure in large chambers remains. Methods of explosion relief panel design and principles of vent and equipment layout to reduce explosion overpressures are reviewed. (orig.) 65 refs.
Authors:
Lautkaski, R [1] 
  1. VTT Energy, Espoo (Finland). Energy Systems
Publication Date:
Dec 31, 1997
Product Type:
Technical Report
Report Number:
VTT-TIED-1812
Reference Number:
SCA: 400800; PA: FI-98:003298; EDB-98:052483; NTS-98:005118; SN: 98001940678
Resource Relation:
Other Information: PBD: 1997
Subject:
40 CHEMISTRY; EXPLOSIONS; GASES; VENTS; MITIGATION; SAFETY; RISK ASSESSMENT; FLAME PROPAGATION; FIRE PREVENTION
OSTI ID:
591688
Research Organizations:
Technical Research Centre of Finland, Espoo (Finland)
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Other: ON: DE98749195; ISBN 951-38-5087-0; TRN: FI9803298
Availability:
OSTI as DE98749195
Submitting Site:
FI
Size:
131 p.
Announcement Date:

Citation Formats

Lautkaski, R. Understanding vented gas explosions. Finland: N. p., 1997. Web.
Lautkaski, R. Understanding vented gas explosions. Finland.
Lautkaski, R. 1997. "Understanding vented gas explosions." Finland.
@misc{etde_591688,
title = {Understanding vented gas explosions}
author = {Lautkaski, R}
abstractNote = {The report is an introduction to vented gas explosions for nonspecialists, particularly designers of plants for flammable gases and liquids. The phenomena leading to pressure generation in vented gas explosions in empty and congested rooms are reviewed. The four peak model of vented gas explosions is presented with simple methods to predict the values of the individual peaks. Experimental data on the external explosion of dust and gas explosions is discussed. The empirical equation relating the internal and external peak pressures in vented dust explosions is shown to be valid for gas explosion tests in 30 m{sup 3} and 550 m{sup 3} chambers. However, the difficulty of predicting the internal peak pressure in large chambers remains. Methods of explosion relief panel design and principles of vent and equipment layout to reduce explosion overpressures are reviewed. (orig.) 65 refs.}
place = {Finland}
year = {1997}
month = {Dec}
}