Updating of the National Normative Base in the Field of Ensuring Fire Safety of Electrical Wiring


Annotation:

In Russia every year, according to the statistics, the most fire hazardous types of electrical installations are electrical wiring, from which 65 % of fires occurred in 2019, associated with all the types of electrical installations.

Considering the urgency of the problem, the Federal Research Budgetary Institution of the All-Russian Order of the Badge of Honor, the Research Institute of Fire Defense pays constant attention to increasing the level of fire prevention studies.

One of the most important tasks in the institute activities in this field is the development, updating, modification and harmonization of the national normative base regulating fire safety requirements and methods for assessing the fire safety of electrical installations, and, above all, of course, electrical wiring.

The fundamental regulatory documents are the Technical Regulations TR EEU 043/2017 and the Federal Law of 22.07.2008 № 123-FZ «Technical regulations on fire safety requirements», in the development of the electrical section of which the authors of the article took an active part. Particular attention here deserves Clause 2 of Article 82, which regulates the requirements for fire resistance (operability) of cable lines and electrical wiring systems for fire protection of the objects under fire conditions, and Сlause 8 of the same article, which imposes the requirements that were awaited for a long time by all the branches of industry, agriculture, housing construction and, first of all, of course, power engineers and employees of the fire service: «Cables laid openly must be flame retardant». The requirement applies to all the objects, regardless of their functional fire hazard.

Over the past three years, the Institute carried out a large scientific research and rule-making work on the revision, development and substantiation of the proposed solutions for new editions of the interstate standards for various types of electrical wiring using: molded electrical wiring products, cables of increased fire resistance under fire conditions, fire retardant cable coatings and cable penetrations.

In theoretical terms, the interest is in the proposed by the authors a calculation method for assessment of electrical products fire hazard, based on the stochasticity of emergency modes that cause their failure and ignition.

References:
  1. TR EEU 043/2017. Technical Regulations of the Eurasian Economic Union «On the requirements for means of ensuring fire safety and fire fighting». Available at: http://docs.cntd.ru/document/456080708 (accessed: October 12, 2020). (In Russ.).
  2. Rules for electrical installations. All current sections of the sixth and seventh editions with changes and additions. Moscow: Normatika, 2020. 464 p. (In Russ.).
  3. GOST R IEC 60050-826—2009. Electrical installations. Terms and definitions. (Reedition). Available at: http://docs.cntd.ru/document/1200077683 (accessed: October 12, 2020). (In Russ.).
  4. GOST R 50571.5.52—2011. Low-voltage electrical installations. Part 5-52. Selection and installation of electrical equipment — Wiring systems. Available at: http://docs.cntd.ru/document/gost-r-50571-5-52-2011 (accessed: October 12, 2020). (In Russ.).
  5. Technical regulations on fire safety requirements: Federal law of the Russian Federation № 123-FZ of July 22, 2008. Available at: http://docs.cntd.ru/document/902111644 (accessed: October 12, 2020). (In Russ.).
  6. GOST R 53313—2009. Molded electrical products. Fire safety requirements. Test methods. Available at: https://internet-law.ru/gosts/gost/48074/ (accessed: October 12, 2020). (In Russ.).
  7. Instrument cable tray fire protection. Available at: https://morganadvancedmaterials.com/media/5882/cabletray.pdf (accessed: October 12, 2020).
  8. GOST IEC 60332-3-21—2011. Tests on electric and optical cables under fire conditions. Part 3-21. Flame spread of vertically-mounted bunched wires or cables. Category A F/R. Available at: http://docs.cntd.ru/document/1200096309 (accessed: October 12, 2020). (In Russ.).
  9. GOST IEC 60332-3-22—2011. Tests on electric and optical cables under fire conditions. Part 3-22. Flame spread of vertically-mounted bunched wires or cables. Category A. Available at: http://docs.cntd.ru/document/1200101503 (accessed: October 12, 2020). (In Russ.).
  10. GOST IEC 60332-3-23—2011. Tests on electric and optical cables under fire conditions. Part 3-23. Flame spread of vertically-mounted bunched wires or cables. Category В. Available at: http://docs.cntd.ru/document/1200100776 (accessed: October 12, 2020). (In Russ.).
  11. GOST IEC 60332-3-24—2011. Tests on electric and optical cables under fire conditions. Part 3-24. Flame spread of vertically-mounted bunched wires or cables. Category С. Available at: http://docs.cntd.ru/document/1200100694 (accessed: October 12, 2020). (In Russ.).
  12. GOST IEC 60332-3-25—2011. Tests on electric and optical cables under fire conditions. Part 3-25. Flame spread of vertically-mounted bunched wires or cables. Category D. Available at: http://docs.cntd.ru/document/1200100706 (accessed: October 12, 2020). (In Russ.).
  13. GOST R 52868—2007. (IEC 61537:2006). Cable tray systems and cable ladder systems for cable management. General technical requirements and test methods. Available at: http://docs.cntd.ru/document/1200068297 (accessed: October 12, 2020). (In Russ.).
  14. On awarding prizes of the Government of the Russian Federation in 2010 in the field of science and technology: Order of the Government of the Russian Federation № 285-р dated February 25, 2011. Available at: https://rg.ru/2011/03/02/premii-site-dok.html (accessed: October 12, 2020). (In Russ.).
  15. GOST 31565—2012. Cable products. Requirements of fire safety. Available at: http://docs.cntd.ru/document/1200101754 (accessed: October 12, 2020). (In Russ.).
  16. How to Use Fire Retardant Paint and Intumescent Paint to Increase the Safety and Fire Resistant Properties of Timber, Plaster, Steel and Masonry Surfaces. Available at: https://www.diydoctor.org.uk/projects/fire-retardant-paint.htm (accessed: October 12, 2020).
  17. GOST R 53311—2009. Coatings cables fire retardant. Methods for determination of fireproof efficiency. Available at: http://docs.cntd.ru/document/1200073270 (accessed: October 12, 2020). (In Russ.).
  18. GOST R 53316—2009. Cable lines. Circuit integrity under fire. Test method. Available at: http://docs.cntd.ru/document/1200082424 (accessed: October 12, 2020). (In Russ.).
  19. Flame Retardant and Fire Resistant Cables. Available at: https://tratosgroup.com/news/flame-retardant-and-fire-resistant-cables/ (accessed: October 12, 2020).
  20. GOST R 53310—2009. Through penetration for cables, hermetic inputs and through penetration of electric current types. Requirements of fire safety. Fire resistance test methods. Available at: http://docs.cntd.ru/document/1200071876 (accessed: October 12, 2020). (In Russ.).
  21. IEC 60695-1-12:2015. Fire hazard tasting — Part 1-12: Guidance for assessing the fire hazard of ofelectrotechnical products — Fire safety engineering. Available at: https://webstore.iec.ch/preview/info_iec60695-1-12%7Bed1.0%7Db.pdf (accessed: October 12, 2020).
  22. GOST 12.1.004—91. Occupational safety standards system. Fire safety. General requirements. Available at: http://docs.cntd.ru/document/9051953 (accessed: October 12, 2020). (In Russ.).
  23. Determination of the probability of fire from cables and wires of electrical networks: methodological recommendations. Moscow: VNIIPO MVD SSSR, 1990. 40 p. (In Russ.).
  24. Smelkov G.I., Kopylov N.P., Pekhotikov V.A. Current Issues of Assessment and Ensuring Electrical Wiring Fire Safety. Bezopasnost truda v promyshlennosti = Occupational Safety in Industry. 2019. № 6. pp. 38–44. (In Russ.). DOI: 10.24000/0409-2961-2019-6-38-44
DOI: 10.24000/0409-2961-2020-11-29-36
Year: 2020
Issue num: November
Keywords : fire safety electrical wiring fire safety requirements test methods interstate standards updating of regulatory documents
Authors: