- Author
- Rogowski, Z. W.
- Title
- Effect of Explosion Pressure Relief on the Maximum Experimental Safe Caps of Propane-Air and Ethylene-Air Mixtures.
- Coporate
- Fire Research Station, Borehamwood, England
- Report
- FR Note 973, April 1973, 22 p.
- Distribution
- CANNOT BE REFERENCED AVAILABLE FROM: BRE, Fire Information Services, BRE Library, Garston, Watford, Herts WD2 7JR, UNITED KINGDOM. Telephone: 44-1923-664069, Fax: 44-1923-664910, Email: library@bre.co.uk Website: http://www.bre.co.uk
- Keywords
- explosions; pressure; propane; ethylene
- Abstract
- The effect of relief vents protected with flame arresters on the maximum experimental safe gaps of 4.2 per cent propane-air and 6.5 per cent ethylene-air flammable mixtures was investigated using an explosion vessel of volume 8.1. Flanges of the following nominal breadths were used: 25 mm (1 in), 12.5 mm (1/2 in), 6 mm (1/4 in), 3.2 mm (1/8 in) and 1.6 mm (1/16 in). Under the most critical conditions for the gas mixtures the MESG was marginally affected when reliefs were present. The maximum explosion pressure was increased by obstacles within the explosion vessel but the MESG remained unchanged.