Browse > Article
http://dx.doi.org/10.14346/JKOSOS.2018.33.6.22

A Study on the Method of Resistance Analysis of Water Stream During Fire Supperession  

Jung, Byeong-Sun (Intergis Co. Ltd.)
Kim, Eung-Sik (Division of Safety and Fire Protection Engineering, Hoseo University)
Park, Jong-Yeol (Department of Convergence Technology for Safety and Environment Graduate School, Hoseo University)
Publication Information
Journal of the Korean Society of Safety / v.33, no.6, 2018 , pp. 22-27 More about this Journal
Abstract
Fire fighters are exposed to the risk of many accidents during fire suppression, especially near the high voltage circuit. In order to prevent and analyze the electric shock accidents, measurement of water resistance is crucial. However, this has been one of the overlooked research areas and it has been very difficult to measure the mixed up resistance components separately. In this paper, we measured a total resistance of apparatus and regarded it as a serial resistance of contact resistance and length dependant resistance. Measuring the resistance by varying the length of water stream, the variable resistance and fixed contact resistance appear, which are used to calculate the both components of resistances. In addition, the resistance of fire hose can be calculated from the parallel circuit which is formed by grounding the fire hose with the resistance of water stream. Results show that we can successfully measure the resistance per unit length of water stream and fire hose, thereby proving that this method is a facile way to measure water and fire hose resistance. However, many experiments are still required to obtain the precise contact resistance of ground under various condition and the resistance between the human body and fire hose.
Keywords
water stream; fire hose; resistance; electrocution;
Citations & Related Records
연도 인용수 순위
  • Reference
1 The Kyunghyang Shinmun "Pajoo Furniture Factory Fire, 1 Missing 3 Wounded", 2015. 05. 28.
2 https://www.youtube.com/watch?v=xozVqUg_2b8&t=3s, "Fire Fighter Bearing Their Own Treatment", SBS8 News, 2015. 10. 04.
3 "Volunteer Fire Fighter is Electrocuted while Fighting a Grass Fire-California", Cincinnati, OH: U.S. Department of Health and Human Service, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH), No. 99F-26, 1999a.
4 "Firefighter Electrocuted in Kentucky Ice Bucket Challenge Accident has Died", The Washington Post, 22. 09. 2014.
5 "Downed Power Line Claims the Life of One Volunteer Fire Fighter and Critically Injures Two Fellow Fire Fighter-Missouri", Cincinnati,OH: U.S. Department of Health and Human Service, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS(NIOSH), No. 99F-37, 1999b.
6 Doug Leihbacher, "Electrical Safety on the Fireground", Fire Engineering Magazine, Vol. 159, Issue 6, 2006.
7 Y. J. Lee, S. H. Hyun, J. M. Cha, Y. S. Song, H. S. Kim and Y. S. Ahn, "A Study on the Safety Accident of Firefighters", Proceedings of 2010 Spring Annual Conference, Korean Institute of Fire Science & Engineering, pp. 126-132, 2010.
8 J. S. Kim and S. P. Kwon, "A Study on the Risk of Electric Shock from the Sprayed Water for Fire Suppression of the PV Installed Building", Fire Science and Engineering, Vol. 28, No. 6, pp. 47-51, 2014.   DOI
9 R. T. Long Jr, A. F. Blum, T. J. Bress and B. R. T. Cotts, "Best Practices for Emergency Response to Incidents Involving Electric Vehicles Battery Hazards: A Report on Full-Scale Testing Results", Fire Protection Research Foundation 2013.
10 Mohamed EL-harkawi, "Electrical Safety Practice and Standard", CRC Press, pp. 106-107, 2013.