Current Issues of Assessment and Ensuring Electrical Wiring Fire Safety


Annotation:

In the Russian Federation over the past few years, every third fire is associated with the ignition of electrical installations, whereas more than 70 % of them being fires from electrical wiring and cable lines.

Such fires are of great hazard for industrial enterprises, especially those with a round-the-clock technological mode of operation, when a certain part of the time distribution and group lines feeding technological electrical equipment remain unattended.

The article provides for the information on the following developments of FGBU VNIIPO EMERCOM of Russia on improving the efficiency of fire prevention for such fires: participation in the creation of new generation cables of increased reliability and fire safety (flame retardant; with low smoke and gas emission; fire-resistant with low corrosiveness and toxicity of insulating materials combustion products). The work, in general, as well as G.I. Smelkov is awarded the Prize of the Government of the Russian Federation in the field of science and technology; development of the normative documents regulating fire safety requirements to ensure fire safety for electrical wiring and methods for their hazard assessment; creation of the calculation method for determining critical conditions (radius of conductor cross section, insulation induction time and duration of the overcurrent flow), at which the cable products ignition is possible under the conditions of overcurrent influence at the incomplete short circuits and electrical network overloads. The method allows to predict the possibility of ignition occurrence of the conductors in the network, and, if necessary, to perform the appropriate fire prevention measures.
 

References:
  1. Zeldovich Ya.B. The theory of gas ignition by the incandescent surface. ZhETF = ZhETF. 1939. Vol. 9. Iss. 2. pp. 1530–1534. (In Russ.).
  2. Frank-Kamenetskiy D.A. Diffusion and heat transfer in the chemical kinetics. Moscow: Nauka, 1967. 240 p. (In Russ.).
  3. Grishin A.M., Subbotin A.N. Mathematical modeling of some non-stationary aerothermochemical phenomena. Sb. tr. TGU (Collection works of TGU). Tomsk: TGU, 1973. 281 p. (In Russ.).
  4. Grishin A.M., Subbotin A.N. On conjugate heat exchange between heated inert bodies and reactive environment medium. Teplo- i massoperenos: sb. (Heat and mass transfer: Collection). Minsk: Nauka i tekhnika, 1972. Vol. 2. Pt. 11. pp. 286–294. (In Russ.).
  5. Technical regulations on fire safety requirements: Federal Law of July 22, 2008 № 123-FZ. Available at: https://www.mchs.gov.ru/law/Federalnie_zakoni/item/5378566/ (accessed: May 1, 2019). (In Russ.).
  6. DIN VDE 0100-420:2016-02. Available at: http://www.ceag.de/sites/ceag.de/files/resource_download/files/05_Errichtung_DE_03_2016.pdf (accessed: May 1, 2019).
  7. UL 1699 «Standard for Arc-Fault Circuit-Interrupters». ANSI Approved: 11.05.2013. Available at: https://standardscatalog.ul.com/standards/en/standard_1699_3 (accessed: May 1, 2019).
  8. McCalmont S. Module-level electronics and ars fault protection. World Renewable Energy Forum. Denver, 2012.
  9. McCalmont S., Katzir G., Fuks F. Low-cost ars-fault detection and protection for PV systems. DOE SunShot Grand Challenge: Summit and Technology Forum. Denver, 2012.
  10. Smelkov G.I., Ryabikov A.I., Kuznetsova E.V. Some Aspects of Regulating Cables Fire Resistance and Maintaining Functionality of Electric Wiring. Bezopasnost truda v promyshlennosti = Occupational Safety in Industry. 2017. № 10. pp. 46–50. DOI: 10.24000/0409-2961-2017-10-46-50 (In Russ.).
  11. TR CU 004/2011. Technical regulations of the Customs Union. On safety of low-voltage equipment. Available at: http://www.eurasiancommission.org/ru/act/texnreg/deptexreg/tr/Documents/TR%20TS%20Downvolt.pdf (accessed: May 1, 2019). (In Russ.).
  12. Smelkov G.I., Ryabikov A.I. On the development and harmonization of the normative base in the field of fire safety of cable products. Kabel-news = Cable-news. 2013. № 6. pp. 26–30. (In Russ.).
  13. GOST R 53310—2009. Cable passages, sealed leads and busbar feedthrough. Fire safety requirements. Fire resistance test methods. Available at: http://docs.cntd.ru/document/1200071876 (accessed: May 1, 2019). (In Russ.).
  14. GOST R 53311—2009. Cable fire retardant coatings. Methods for determining flame-retardant efficiency. Available at: http://docs.cntd.ru/document/gost-r-53311-2009 (accessed: May 1, 2019). (In Russ.).
  15. GOST 31565—2012. Cable products. Fire safety requirements. Available at: http://docs.cntd.ru/document/1200101754 (accessed: May 1, 2019). (In Russ.).
  16. GOST R 53316—2009. Cable lines. Preservation of serviceability in case of fire. Test methods. Available at: http://docs.cntd.ru/document/1200082424 (accessed: May 1, 2019). (In Russ.).
  17. SP 6.13130.2009. Fire protection systems. Electrical equipment. Fire safety requirements. Available at: http://docs.cntd.ru/document/1200071149 (accessed: May 1, 2019). (In Russ.).
  18. SP 256.1325800.2016. Set of rules. Electrical installations of residential and public buildings. Design and installation rules. Available at: http://docs.cntd.ru/document/1200139957 (accessed: May 1, 2019). (In Russ.).
DOI: 10.24000/0409-2961-2019-6-38-44
Year: 2019
Issue num: June
Keywords : electrical wiring fire hazard emergency modes overcurrent conductor critical radius insulation induction time fire regulations
Authors:
  • Smelkov G.I.
    Smelkov G.I.
    Dr. Sci. (Eng.), Prof., Chief Research Associate, smelkov39@mail.ru FGBU VNIIPO EMERCOM of Russia, Balashikha, Russia
  • Kopylov N.P.
    Kopylov N.P.
    Dr. Sci. (Eng.), Prof., Chief Research Associate FGBU VNIIPO EMERCOM of Russia, Balashikha, Russia
  • Pekhotikov V.A.
    Pekhotikov V.A.
    Cand. Sci. (Eng.), Lead Researcher, napoz46@mail.ru FGBU VNIIPO EMERCOM of Russia, Balashikha, Russia