Electric cables. Fire resistance test for unprotected electric cables (P classification)

2016 ◽  
Keyword(s):  
Fire Resistance ◽  
Resistance Test ◽  
Fire Resistance Test ◽  
Electric Cables

scholarly journals Experimental Study on Delaying the Failure Time of In-Service Cables in Trays by Using Fire-Retardant Coatings

2021 ◽  
Vol 11 (6) ◽  
pp. 2521
Author(s):  
Feng Jiang ◽  
Jianyong Liu ◽  
Wei Yuan ◽  
Jianbo Yan ◽  
Lin Wang ◽  
...  
Keyword(s):  
Fire Resistance ◽  
Failure Time ◽  
Fire Retardant ◽  
Resistance Test ◽  
Control Group ◽  
Engineering Practice ◽  
Standard Fire ◽  
Oil Storage ◽  
Fire Resistance Test ◽  
Test Furnace

Improving the fire resistance of the key cables connected to firefighting and safety equipment is of great importance. Based on the engineering practice of an oil storage company, this study proposes a modification scheme that entails spraying fire-retardant coatings on the outer surface of a cable tray to delay the failure times of the cables in the tray. To verify the effect, 12 specimens were processed using five kinds of fire-retardant coatings and two kinds of fire-resistant cotton to coat the cable tray. The specimens were installed in the vertical fire resistance test furnace. For the ISO 834 standard fire condition, a fire resistance test was carried out on the specimens. The data for the surface temperature and the insulation resistance of the cables in trays were collected, and the fireproof effect was analyzed. The results showed that compared with the control group, the failure time of the cable could be delayed by 1.57–14.86 times, and the thicker the fire-retardant coatings were, the better the fireproof effect was. In general, the fire protection effect of the fire-retardant coating was better than that of the fire-resistant cotton.

scholarly journals Fire resistance test of transformers filled with natural ester insulating liquid

2019 ◽  
Vol 2019 (16) ◽  
pp. 1560-1564 ◽  
Author(s):  
Shengwei Cai ◽  
Cheng Chen ◽  
Huihao Guo ◽  
Shaobing Chen ◽  
Zandong Zhou ◽  
...  
Keyword(s):  
Fire Resistance ◽  
Resistance Test ◽  
Fire Resistance Test ◽  
Insulating Liquid ◽  
Natural Ester

scholarly journals Numerical Modeling of Fire Resistance Test as a Tool to Design Lightweight Marine Fire Doors: A Preliminary Study

2020 ◽  
Vol 8 (7) ◽  
pp. 520 ◽  
Author(s):  
Giada Kyaw Oo D’Amore ◽  
Alberto Marinò ◽  
Jan Kašpar
Keyword(s):  
Fire Resistance ◽  
Resistance Test ◽  
Critical Parameters ◽  
Test Procedures ◽  
Element Analysis ◽  
Thermal Bridge ◽  
Fire Resistance Test ◽  
Marine Applications ◽  
In Fire

Finite element analysis (FEA) is employed to simulate the thermo-resistance of a marine fire-proof door in the fire-resistance test defined by the International Code for the Application of Fire Test Procedures (2010 FTP Code) and required by the International Maritime Organization (IMO) for marine applications. The appropriate type of simulation adopted (i.e., steady or unsteady) is discriminated on the basis of a comparison between the numerical results and the experimental data. This appropriate model is used to evaluate the critical parameters affecting fire-proof door performance. A remarkable role of the thermal bridge at the door edges in fire resistance is assessed, along with the parameters that allow its reduction. These findings provide insight into how to design a thinner and lighter fire door.

Heat Transfer in Cone Calorimeter Tests of Generic Wall Assemblies

2013 ◽  
Author(s):  
Charles T. Aire ◽  
David A. Torvi ◽  
Elizabeth J. Weckman
Keyword(s):  
Heat Transfer ◽  
Fire Resistance ◽  
Fire Safety ◽  
Cone Calorimeter ◽  
Full Scale ◽  
Resistance Test ◽  
Double Layers ◽  
Gravimetric Analysis ◽  
Gypsum Board ◽  
Fire Resistance Test

It is critical for the construction industry to ensure that new building designs and materials, including wall and floor assemblies (e.g., a studded wall with insulation and drywall) provide an acceptable level of fire safety. A key fire safety requirement that is specified in building codes is the minimum fire resistance rating, which is a measure of the ability of an assembly to limit fire spread within a building. A manufacturer of building materials (e.g., insulation or drywall) is required to perform full-scale fire resistance furnace tests to determine the fire resistance ratings of assemblies that use their products. Fire resistance test facilities are very limited and these tests are very expensive to perform. Therefore, it can be difficult to properly assess the impact of changes to individual components on the overall fire performance of an assembly during the design process. As part of a project to develop methods of using small-scale fire test data to predict full-scale fire resistance test results, the heat transfer through scale models of common wall assembly designs was measured during cone calorimeter tests using an incident heat flux of 75 kW/m2. Wall assemblies consisting of single and double layers of 12.7 mm (1/2 in.) regular and lightweight gypsum board, and 15.9 mm (5/8 in.) type X gypsum board, along with mineral wool insulation and wood studs were tested. Temperature measurements made at various points within these assemblies are presented in this paper, and are discussed using results from thermal gravimetric analysis tests of the three types of gypsum board. Implications of this research to the development of heat transfer models and scaling relationships are also briefly discussed.

Fire Resistance Performance of Reinforced Concrete Column with Embedded Permanent Formwork Using Woodwool Panel

2014 ◽  
Vol 661 ◽  
pp. 111-117 ◽  
Author(s):  
Ahmad Zakiah ◽  
Ahmad Nursafarina ◽  
Azerai Ali Rahman ◽  
Hanizah Abdul Hamid ◽  
Mohammad Soffi Md Noh
Keyword(s):  
Reinforced Concrete ◽  
Cross Sections ◽  
Fire Resistance ◽  
Resistance Test ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Permanent Formwork ◽  
Fire Resistance Test ◽  
Slender Column ◽  
Resistance Performance

This paper reports the investigation on the fire resistance performance of reinforced concrete column with embedded permanent formwork from woodwool board (WWCB). A series of slender column embedded with and without WWCB with cross-sections 200 mm x 200 mm for column without WWCB and 300 mm x 300 mm with embedded 50 mm thick WWCB. The height of the slender column was 2000 mm. The fire resistance test was performed in accordance with BS 476-22:1987 for two (2) hours fire exposure. The fire resistance test for the embedded column with WWCB was classified as “good” in resisting fire and heat transfer.

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