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Burning behavior of cable tray located on a wall with different cable arrangements
Author(s) -
Huang Xianjia,
Zhu He,
Peng Lan,
Zheng Zihui,
Zeng Wuyong,
Bi Kun,
Cheng Chihonn,
Chow Wanki
Publication year - 2018
Publication title -
fire and materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.482
H-Index - 58
eISSN - 1099-1018
pISSN - 0308-0501
DOI - 10.1002/fam.2669
Subject(s) - tray , power cable , direct buried cable , engineering , structural engineering , composite material , materials science , electrical engineering , mechanical engineering , cable harness , cable gland , cable theory , layer (electronics)
Summary Cable fire risk analysis is important for fire protection design in nuclear power plants, where multiple horizontal cable trays are mostly located on the walls. Fire experiments using three cable trays with different cable arrangements were conducted in a confined room to investigate the burning behavior of a cable tray on a wall. A corner was formed by the side wall and the cable tray. Hot smoke emitted from the burning cable was trapped in the corner and then ignited the cable on the bottom surface of the upper cable tray. It is found that for cables densely packed together, spread of flame on the bottom surface of cable tray was clearly observed and increased the mass loss of cable burning during the growth stage of a cable tray fire. For cables arranged further apart, vertical propagation from the bottom tray to the top tray was fast and dominated the mass loss of cable burning.