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Accession Number:
ADA063008
Title:
Experimental Study of Flame Control Devices for Cargo Venting Systems.
Corporate Author:
LITTLE (ARTHUR D) INC CAMBRIDGE MASS
Report Date:
1978-09-01
Abstract:
Experiments were performed to determine the critical dimensions of flame arrestor elements which will prevent flames from traveling into bulk cargo tanks through the venting system. Based on the tests, the design criteria are more stringent than proposed by Wilson and Atallah DOT Report CG-D-157-75. The passageway diameter apparently must be less than 40 of the published laminar-flame quenching diameter of the product fuel to be vented. In addition, the length of the arrestor apparently must be greater than 1000 D sub sq H, where D sub H is the critical passageway diameter in inches. This second criterion applies to methane, acetaldehyde, toluene, methyl alcohol, gasoline, and butane flames of up to 200 ftsec approach flame speed. For acetyleneair and ethyleneair, no available arrestor exhibited consistent quench for the present test conditions. Experiments were also performed to determine the conditions for using steam injection or a high-velocity relief valve to prevent flame passage into a vent system. Author
Descriptive Note:
Final rept.,
Supplementary Note:
See also Rept. no. USCG-D-157-75, AD-A015 822.
Pages:
0120
Contract Number:
DOT-CG-42357-A
File Size:
41.45MB
