A Comparative study on fire hazards of cables used in nuclear power plants based on small- and large-scale experiments

Tang, Kaixuan; Zhang, Ying; Jiang, Shuai; Li, Changwei; Ma, Chuyuan; Liu, Ganghua; Zhang, Hongming; Yuan, Bihe

doi:10.1007/s10973-022-11578-z

Cited by 12 publications

(3 citation statements)

References 30 publications

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“…The gas-based thermal fault condition assessment technique plays a crucial role in this regard, as it monitors changes in the concentration of characteristic gas products in cables. [10][11][12][13][14][15] This enables the assessment of the cable's condition. Jianxin Yi et al successfully achieved early warning of electrical fires by detecting the characteristic substances released from overheated PVC cables.…”

Section: Introductionmentioning

confidence: 99%

“…Timely detection of initial thermal faults can help prevent unexpected cable failures and minimize overall operating costs. The gas‐based thermal fault condition assessment technique plays a crucial role in this regard, as it monitors changes in the concentration of characteristic gas products in cables 10–15 . This enables the assessment of the cable's condition.…”

Section: Introductionmentioning

confidence: 99%

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Revealing the pyrolysis mechanism of polypropylene cable insulation: A combined study of TG‐GC experiments and RMD/DFT simulations

Guo,

Wu,

Zhang

et al. 2024

J of Applied Polymer Sci

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Styrene grafted polypropylene (PP‐g‐St) is one of the insulating materials for high voltage power cables. However, the process of pyrolysis gas generation in polypropylene cable insulation remains poorly understood. To address this knowledge gap, this study employed a combination of thermogravimetric‐gas chromatography experiments, density functional theory, and reactive molecular dynamics simulations. The experimental findings revealed that the pyrolysis gases primarily consisted of H2, CO, C2H4, and CH4. Higher temperatures were found to increase the yields of H2 and CO. The simulation results indicated that H2 and CO were generated through the rupture of less reactive olefins and radicals, while C2H4 was primarily produced by the rupture of CC bonds in the polypropylene chain. Additionally, CH4 was formed when CH3 groups captured hydrogen from other molecules. By the chain reaction mechanism, we enable the calculation of the activation energy of PP‐g‐St. This study provides a theoretical foundation for understanding the pyrolysis gas generation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Revealing the pyrolysis mechanism of polypropylene cable insulation: A combined study of TG‐GC experiments and RMD/DFT simulations

Guo,

Wu,

Zhang

et al. 2024

J of Applied Polymer Sci

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show abstract

“…However, they exhibited unfavorable factors, such as low smoke visibility and high toxicity. Tang et al [8] conducted a comparative study on the combustion characteristics and fire hazards of two types of cables used in nuclear power plants, utilizing cone calorimetry and cable tray fire tests. The experimental findings demonstrated that the fire performance of the NPP flame-retardant cable was notably affected by external radiation intensity.…”

Section: Introductionmentioning

confidence: 99%

Research on the Fire Hazard of Different Cables Based on Cone Calorimetry

Shi,

Yang,

Long

2023

Fire

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In recent years, due to the extensive application and inherent fire hazard of cable materials, the combustion characteristics of frequently used cables, including electrical cables, wires, optical fibers, and network cables have been studied based on ISO 5660 cone calorimetry. The fire hazard associated with these cables under different radiation intensities was explored in this study, with parameters such as time to ignition (TTI), heat release rate per unit area (HRRPUA), peak heat release rate (PHRR), total heat release (THR), and mass loss rate (MLR) being investigated for each cable type. Based on an experimental analysis, the risk of fire for all four cable types was augmented by an increase in the external radiation intensity, with electrical cables considered as posing the greatest risk. Regarding smoke toxicity, the lowest risk of smoke toxicity was demonstrated by the network cable, with an FED (fractional effective dose) of 0.0203, followed by optical fibers, with an FED of 0.0507; electrical wires, with an FED of 0.0417; and electrical cables, with an FED of 0.0501. Notably, no significant distinctions were exhibited by the other three cable types, and the smoke toxicity of all four cables did not reach lethal concentration levels in humans. Consequently, considering both thermal hazard and smoke toxicity, it became evident that electrical cables posed the greatest overall fire hazard.

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Comprehensive evaluation of mine cable fire hazards based on entropy weight-grey correlation method

Wang

Huo

Kang

et al. 2022

J Therm Anal Calorim

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A Comparative study on fire hazards of cables used in nuclear power plants based on small- and large-scale experiments

Cited by 12 publications

References 30 publications

Revealing the pyrolysis mechanism of polypropylene cable insulation: A combined study of TG‐GC experiments and RMD/DFT simulations

Revealing the pyrolysis mechanism of polypropylene cable insulation: A combined study of TG‐GC experiments and RMD/DFT simulations

Research on the Fire Hazard of Different Cables Based on Cone Calorimetry

Comprehensive evaluation of mine cable fire hazards based on entropy weight-grey correlation method

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