Hazards of Spillage of LNG into Water.
Final rept. 15 Jan 71-14 Jan 72,
BUREAU OF MINES PITTSBURGH PA PITTSBURGH MINING AND SAFETY RESEARCH CENTER
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The program was a follow-on to an earlier 1969 study in which the spillage of liquefied natural gas LNG into water produced unexpected vapor explosions. The two main objectives of the present study were to assess the hazards of vapor explosions, and to repreat on larger scale the earlier observations of atmospheric dispersion of the natural gas downwind of a spill. The LNG came from two domestic sources One in which heavy hydrocarbons were present in very low concentration and which vaporized quietly One in which the ratio ethaneheavier hydrocarbons was about 101 and which provided numerous delayed vapor explosions. No explosion was obtained which duplicated the 1969 experience. The program did not reveal the mechanism of vapor explosions. The program did show that explosions under various experimental conditions did not ignite the flammable vapor cloud and that the energy release is very modest relative to chemical explosions. Author
- Safety Engineering