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Citation |
Zhou N, Wu L, Li X, Li X, Shi J, Cao L. China Saf. Sci. J. 2022; 32(1): 135-141. |
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Copyright |
(Copyright © 2022, China Occupational Safety and Health Association, Publisher Gai Xue bao) |
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DOI |
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PMID |
unavailable |
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Abstract |
In order to explore thermodynamic response law of petrochemical pipelines under jet fire, a scale-up test platform was built according to similarity theory to carry out experimental study on this topic. Based on analysis on pipelines' thermodynamic response and domino evolution in fire, influence of various factors on their temperature rise and failure was discussed, and a quantitative calculation model of pipeline failure time was established by adopting strength theory. The results show that fire power is a dominant factor of pipeline failure, along with its increase, failure time will be shortened. Horizontal jet fire has the greatest impact, and the peak temperature of pipeline is nearly doubled compared with the case of vertical jet fire. Under the situation of multiple jet fire sources, flame intensity and coverage area increase sharply, while peak temperature reaches as far as 800 ℃, resulting in failure of steel structure pipelines' strength. Liquid medium will accelerate pipeline failure, and pipeline pressure, size, distance from fire source all have significant influence on its failure. © 2022, Editorial Department of China Safety Science Journal. All rights reserved. Language: zh |