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[121840] Artykuł: Application Assessment of Electrical Cables during Smoldering and Flaming CombustionCzasopismo: Applied SciencesISSN: 2076-3417 Opublikowano: Marzec 2023 Autorzy / Redaktorzy / Twórcy Grupa MNiSW: Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A) Punkty MNiSW: 100 Pełny tekst DOI Keywords: electrical cable  flaming combustion  smoldering combustion  toxicity  combustion  products  |
Electrical cables are a potential source of ignition and fire hazards in various types of
buildings and industrial installations, as well as in all modes of transportation, including aircraft.
Fires in buildings pose the greatest threat to human life and health. The composition of thermal
degradation products depends mainly on the type of combustible materials and the type of
combustion process—flaming or smoldering. The purpose of this paper was to determine, based on
experimental studies, the effects of flaming and smoldering combustion on the response times of
fire smoke detectors. In addition, the concentrations of fire gases formed in the process of duct
combustion, including CO, SO2, NO2, NO, HCN, HCl, HBr and HF, were measured using an FTIR
spectrometer. The results presented confirm the significant effect of the way the cable samples
burned on detector tripping time. The highest concentration of smoke (Y) in the test chamber was
obtained during flame combustion. It was further found that the characteristics of the cable
insulation material used, such as the type of PVC, had a significant effect on the toxicity of the
emitted gases. The largest amounts of toxic gases were emitted during the smoldering combustion
of a cable with a plasticized PVC sheath.