ON THE EXPERIMENTAL RATIONALE OF QUALITY INDICATORS OF FIRE-FIGHTING LAYFLAT DELIVERY HOSES FOR FIRE-RESCUE EQUIPME

  • V. Prisyajnyuk Ukrainian Civil Defense Research Institute
  • S. Semychayevsky Ukrainian Civil Defense Research Institute
  • М. Yakimenko Ukrainian Civil Defense Research Institute
  • М. Osadchuk Ukrainian Civil Defense Research Institute
  • V. Svirskiy Ukrainian Civil Defense Research Institute
  • О. Milutin Ukrainian Civil Defense Research Institute
Keywords: abrasion, burst pressure, experimental research, fire – rescue equipment, layflat delivery fire hoses,, proof pressure, quality indicators, technical requirements, specifications, working pressure

Abstract

The urgency of the necessity of experimental substantiation of quality indicators of the fire-fighting layflat hoses for fire – rescue equipment and methods of their estimation is noted, taking into account the modern approaches set out in European standards. The results of experimental researches of fire-fighting layflat hoses for fire – rescue equipment by quality indicators are presented: resistance of the hoses to the action of working hydraulic pressure, resistance of the hoses to the action of the proof hydraulic pressure, burst pressure and abrasion resistance. Delivery fire hoses are one of the main types of fire fighting equipment. Delivery fire hoses in the course of operation undergo mechanical wear, are exposed to the sun's rays, microbiological putrefactive processes, accidental ingress of chemically active substances, the influence of low and high temperatures, irreversible processes of material aging. All this causes the appearance of defects of different nature. Analysis of the causes of failure of delivery fire hoses showed that of all failures more than 60% are fistulas, as well as breaks and disruptions of heads - 30% and 10% respectively. The analysis of the presence and nature of defects during the regular testing of workers and decommissioned fire hoses  showed that the defects are divided into: explicit (gusts and fistulas) that violate the tightness of the hoses;  visible cuts, abrasions, missing and chemical corrosion from contamination of fuel and lubricants that do not violate the tightness of the hoses; hidden (unnoticed cuts, breaks in the threads of the power frame, etc.) that do not violate the tightness of the hoses. Studies have shown that only 75% of defects are detected during hydraulic testing, and undetected defects result in hoses failing in a fire. To date, requirements for assessing the quality of delivery fire hoses for fire - fighting equipment in Ukraine are set out in the standard DSTU 3810-98. At the same time, these requirements are to some extent obsolete and do not meet the current regulations of the leading countries in the world on this issue. In view of the above, it is urgent to experimentally justify the quality indicators of the fire-fighting layflat hoses for fire – rescue equipment and methods of their evaluation, taking into account the modern approaches set out in European standards. The results of the pilot studies will be used to justify the provisions of the draft national standard of Ukraine that will be developed and to improve the existing test base.

 

Author Biographies

V. Prisyajnyuk, Ukrainian Civil Defense Research Institute

head of the department of the research and testing center

S. Semychayevsky, Ukrainian Civil Defense Research Institute

senior researcher of the department of the research and testing center

М. Yakimenko, Ukrainian Civil Defense Research Institute

researcher of the department of the research and testing center

М. Osadchuk, Ukrainian Civil Defense Research Institute

junior researcher of the department of the research and testing center

V. Svirskiy, Ukrainian Civil Defense Research Institute

junior researcher of the department of the research and testing center

О. Milutin, Ukrainian Civil Defense Research Institute

senior researcher of the department of the research and testing center

References

1. Elfimova, M. V., & Arkhipov G. F. (2011). Actual problems of maintenance of fire hoses. Problems of risk management in the technosphere, 3 (19), 35-40.
2. Elfimova, M. V. (2010). Service fire hoses. Bulletin of the East Siberian Institute of the Ministry of Internal Affairs of Russia, 3 (54), 55-61.
3. Yakovenko, Yu. F. (2007). Fire-technical weapons in fire trucks: frequency of use and placement principles, 3, 14-18.
4. Nazarenko, S. Yu.., Chernobay, G. O., Larin, O. O., Kalinovsky., A. Ya., Nazarenko, V. Yu. (2019). Design and experimental evaluation of the reliability of rubber-cord delivery hoses. A monograph , 136.
5. Nguyen, Van Thu. (1984). Improving the operation of fire delivery hoses in the SRV: author. dis. for the degree of Cand. tech. Sciences: special. 05.26.01 - Safety and fire fighting equipment, 12.
6. State Standard of Ukraine 3810-98 (1999) Fire service equipment. Fire-fighting delivery hoses. General specifications. Kiev, State Committee for Technical Regulation and Consumer Policy Publ., 39. (In Ukrainian)
7. Prisyajnyuk, L. A. (1998). To develop the State Standard of Ukraine project Fire technics. Fire-fighting delivery hoses. General Specifications. Report (Final) of UkrNDIPB, 209.
8. State Standard of Ukraine 2273:2006 (2007) Fire fighting equipment. Terms and definitions of basic concepts. Kiev, State Committee for Technical Regulation and Consumer Policy Publ., 44. (In Ukrainian).
9. National standard of Germany DIN 14811-2008/А1-2012, А2-2014 (2008) Fire-fighting hoses - non-percolating layflat delivery hoses and hose assemblies for pumps and vehicles. Berlin, German Institute for Standardization Publ., 46. (In English).
10. State Standard of Ukraine EN 14540:2019 (EN 14540:2014, IDT) (2019) Fire-fighting hoses - Non-percolating layflat hoses for fixed systems. Kiev, State Committee for Technical Regulation and Consumer Policy Publ., 54. (In English).
11. State Standard of Republic of Belarus (project) Fire fighting equipment. Fire-fighting delivery hoses. General technical requirements. Test methods. Minsk, National Technical Committee for Standardization. 20. (in Russian).
12. National standard of Germany DIN EN ISO 1402:1996-09 (ISO 1402:1994) (1996) Rubber and plastics hoses and hose assemblies – Hydrostatic testing. Berlin, German Institute for Standardization Publ., 7. (In English).
13. American National Standard NFPA 1961:2013 (2013) Standard on Fire Hose. Quincy, Massachusetts, National Fire Protection Association Publ., 23. (In English).
14. Technical Committee on Fire Hose First Draft Meeting (NFPA 1961), Atlanta, GA 30313, 2015.
15. State Standard of Ukraine 3931-99 (1999) Fire engineering. Fire-absorbing and pressure-suction hoses. General specifications and test methods. Kiev, State Committee for Technical Regulation and Consumer Policy Publ. 20. (In Ukrainian).
16. National standard of Great Britain BS EN 1947:2002 (2002) Fire-fighting hoses - Semi-rigid delivery hoses and hose assemblies for pumps and vehicles. London, British Standards Institution Publ., 38. (In English).
17. BS EN 694:2001 (2004) Fire-fighting hoses - Semi-rigid hoses for fixed systems. London, British Standards Institution Publ., 26. (In English).
18. DIN EN 14540:2004. (2004) Fire-fighting hoses - Non-percolating layflat hoses for fixed systems. Berlin, German Institute for Standardization Publ., 28. (In English).
19. EN ISO 14557 (ISO 14557:2002). (2002) Fire-fighting hoses - Rubber and plastics suction hoses and hose assemblies. Geneva, International Organization for Standardization Publ., 18. (In English).
20. Prisyajnyuk, L. A. (1998). To develop the State Standard of Ukraine project Fire technics. Suction fire hoses. General specifications and test methods. Report (final) of UkrNDIPB, 131.
21. Prisyajnyuk, V. V., Semychayevsky, S. V., Yakimenko, M. L., Osadchuk, M. V., Svirsky, V. V., Milutin O. V. (2020). About improvement of the regulatory base for technical requirements and test methods for fire-fighting delivery hoses. Municipal economy of cities, 154, 312-317.
22. Prisyajnyuk, V. V., Semychayevsky, S. V., Yakimenko, M. L., Osadchuk, M. V., Svirsky, V. V., Milutin O. V. (2020). Of the types, nomenclature and basic parameters of the fire-fighting delivery hoses for the fire-rescue equipment. Municipal economy of cities, 154, 318-323.
23. Prisyajnyuk, V. V., Semychayevsky, S. V., Yakimenko, M. L., Osadchuk, M. V., Svirsky, V. V., Milutin O. V. (2020). Analysis of structural design and basic technical requirements for layflat fire hoses for fire-rescue equipment. Municipal Economy of Cities, 154, 324-327.
Published
2020-07-01
How to Cite
PrisyajnyukV., SemychayevskyS., YakimenkoМ., OsadchukМ., SvirskiyV., & MilutinО. (2020). ON THE EXPERIMENTAL RATIONALE OF QUALITY INDICATORS OF FIRE-FIGHTING LAYFLAT DELIVERY HOSES FOR FIRE-RESCUE EQUIPME. Municipal Economy of Cities, 3(156), 217-221. Retrieved from https://khg.kname.edu.ua/index.php/khg/article/view/5623

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