A Study on the Safety of 50mm Fire Hose through the Test of Repulsive Force for Fire-Fighters

doi:10.15683/kosdi.2025.6.30.435

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2025 Vol.21, Issue 2 Preview Page Next Page

Original Article

A Study on the Safety of 50mm Fire Hose through the Test of Repulsive Force for Fire-Fighters 소방대원용 50mm 소방호스 반발력 시험을 통한 안전성 확보에 관한 연구: 한용택*
Yong-Taek Han*; Professor, Department of Fire and Disaster Protection Engineering, Hoseo University, Asan, Republic of Korea

30 June 2025. pp. 435-445

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Abstract

Purpose: In this study, in addition to the 40mm and 65mm fire hoses generally used by firefighter in Korea, the range and availability of 50mm fire hoses, which are not currently in use, were analyzed. Method: Each hose was tested by increasing the pressure from 0.3Mpa to 1.2Mpa, measuring quantitative repulsion using a pressure sensor, water discharge using a flow meter, and qualitative repulsion for men and women, confirming the following results. Result: Quantitative repulsive force using a pressure sensor showed the minimum repulsive force value among the conditions of 29.99N at 0.3Mpa of the 40mm hose, and the water flow rate was 151lpm, and the maximum repulsive force of 349.96N was measured at 1.2Mpa of the 65mm hose and the water resistance at that time was 777lpm. In terms of qualitative repulsion measured on adults, men were able to maintain repulsion even when water shot by 0.9Mpa, but it was difficult to maintain repulsion when water shot using 65mm nozzle and 65mm fire hoses when water shot by 1.2Mpa. Conclusion: Quantitative, water shooting, and qualitative repulsion measurements using 50mm hoses confirmed that they were included between the results measured using 40mm hoses and 65mm hoses, and the possibility of using 50mm fire hoses was confirmed due to the lack of water flow rate of 40mm fire hoses and excessive repulsion of 65mm fire hoses.

Keywords

Fire-fighter

50mm Fire Hose

Quantitative Repulsive

Qualitative Repulsive

연구목적: 국내에서 일반적으로 소방대원들이 사용하는 40mm와 65mm 소방호스와 더불어 현재 사용하지 않는 50mm 소방호스에 대한 활용 범위와 사용 가능성을 알아보기 위하여 다음과 같이 분석하였다. 연구방법: 각각의 호스를 이용하여 0.3Mpa에서 1.2Mpa의 압력까지 상승시켜 압력센서를 이용한 정량적인 반발력과 유량계를 이용한 방수량 및 남성과 여성을 대상으로 정성적인 반발력을 측정하였으며 다음과 같은 결과를 확인하였다. 연구결과: 압력센서를 이용한 정량적인 반발력에서는 40mm 호스의 0.3Mpa에서 29.99N의 조건 중 최소의 반발력 값을 보여주었으며, 그때의 방수량은 151lpm 이었으며, 조건 중 최대의 반발력은 65mm 호스의 1.2Mpa에서 349.96N의 최대 반발력과 그때의 방수량은 777lpm으로 측정되었다. 성인들을 대상으로 측정한 정성적인 반발력에서는 남성의 경우 조건 중 0.9Mpa의 방수 시에도 반발력을 유지할 수 있었으나, 1.2Mpa 방수 시 65mm의 관창과 65mm 소방호스를 이용한 방수 시에는 반발력을 유지하기 어려운 조건을 확인할 수 있었다. 결론: 50mm 호스를 사용한 정량적인 반발력, 방수량 및 정성적인 반발력 측정 결과 40mm 호스와 65mm 호스를 사용하여 측정한 결과의 사이에 포함하는 것을 확인할 수 있었으며, 40mm 소방호스의 방수량 부족과 65mm 소방호스의 반발력 과대로 인한 보완으로 50mm 소방호스의 사용 가능성을 확인할 수 있었다.

키워드

소방관

50mm 소방호스

정량적 반발력

정성적 반발력

References

Choi, J.Y., Kim, W.J., Kang, S.W., Kim, J.G. (2016). "A study on the supply and perception of personal protective equipments for fire fighters." Journal of the Korea Society of Disaster Information, Vol. 12, No. 4, pp. 381-388. 10.15683/kosdi.2016.12.31.381
Fire Hose Direct (2024). White 2-1/2" x 25' Double Jacket Fire Hose (Alum NH Couplings).
Grimwood, P. (2013). Euro Firefighter 2. Firefighting Tactics and Fire Engineer's Handbook, FIFireE, D&M Heritage Press, Yorkshire, pp. 86-98.
Korea Law Information Center (2016). Technical Standards for Type Approval of Fire Hose. Ministry of Public Safety and Security.
Lee, H.E. (2020). "An experimental study on pressure loss in fire hose under various deployment situations." Journal of Fire & Safety Research, Vol. 1, No. 1, pp. 116-130. 10.54713/JFRI.2020.1.116
Lee, Y.S., Yoo, J.H., Seo, Y.J., Kim, J.H. Kim, J.H., Jo, C.H. (2024). "A study on measurements of skin exposure damage during firefighting activities." Journal of the Society of Disaster Information, Vol. 20, No. 4, pp. 898-908.
Microfinity (2024). BDH RedChief 15X50 Fire Hose.
Min, D.R., Cho, H.Y. (2021). "Fire nozzle internal shape design to reduce anti repulsive force." Transactions of the KSME, Vol. 45, No. 8, pp. 699-707. 10.3795/KSME-A.2021.45.8.699
Min, S.H., Kwon, Y.J. (2013). "A study on the friction loss reduction in fire hoses used at a fire scene." Journal of Fire Science and Engineering, Vol. 27, No. 3, pp. 52-59. 10.7731/KIFSE.2013.27.3.052
National Fire Agency (2020). Korean Fire Equipment Standards of Fire Hose.
National Fire Agency (2022). Korean Fire Equipment Standards of Fire Hose.
National Fire Service Academy (2024). Fire-Fighting Tactics 1-1.
NFPA 1710 (2020). zation and Deployment of Fire Suppressions, Emergency Medical Operations, and Special Operations to the Public by Career Fire Departments.
NFPA 1960 (2024). Standard for Fire Hose Connections.
WFR Fire (2024). KrakenEXO Fire Hose 50ft Lengths.

Information

Publisher :The Korean Society of Disaster Information
Publisher(Ko) :한국재난정보학회
Journal Title :Journal of the Society of Disaster Information
Journal Title(Ko) :한국재난정보학회논문집
Volume : 21
No :2
Pages :435-445
DOI :https://doi.org/10.15683/kosdi.2025.6.30.435

[1] Choi, J.Y., Kim, W.J., Kang, S.W., Kim, J.G. (2016). "A study on the supply and perception of personal protective equipments for fire fighters." Journal of the Korea Society of Disaster Information, Vol. 12, No. 4, pp. 381-388. 10.15683/kosdi.2016.12.31.381

[2] Fire Hose Direct (2024). White 2-1/2" x 25' Double Jacket Fire Hose (Alum NH Couplings).

[3] Grimwood, P. (2013). Euro Firefighter 2. Firefighting Tactics and Fire Engineer's Handbook, FIFireE, D&M Heritage Press, Yorkshire, pp. 86-98.

[4] Korea Law Information Center (2016). Technical Standards for Type Approval of Fire Hose. Ministry of Public Safety and Security.

[5] Lee, H.E. (2020). "An experimental study on pressure loss in fire hose under various deployment situations." Journal of Fire & Safety Research, Vol. 1, No. 1, pp. 116-130. 10.54713/JFRI.2020.1.116

[6] Lee, Y.S., Yoo, J.H., Seo, Y.J., Kim, J.H. Kim, J.H., Jo, C.H. (2024). "A study on measurements of skin exposure damage during firefighting activities." Journal of the Society of Disaster Information, Vol. 20, No. 4, pp. 898-908.

[7] Microfinity (2024). BDH RedChief 15X50 Fire Hose.

[8] Min, D.R., Cho, H.Y. (2021). "Fire nozzle internal shape design to reduce anti repulsive force." Transactions of the KSME, Vol. 45, No. 8, pp. 699-707. 10.3795/KSME-A.2021.45.8.699

[9] Min, S.H., Kwon, Y.J. (2013). "A study on the friction loss reduction in fire hoses used at a fire scene." Journal of Fire Science and Engineering, Vol. 27, No. 3, pp. 52-59. 10.7731/KIFSE.2013.27.3.052

[10] National Fire Agency (2020). Korean Fire Equipment Standards of Fire Hose.

[11] National Fire Agency (2022). Korean Fire Equipment Standards of Fire Hose.

[12] National Fire Service Academy (2024). Fire-Fighting Tactics 1-1.

[13] NFPA 1710 (2020). zation and Deployment of Fire Suppressions, Emergency Medical Operations, and Special Operations to the Public by Career Fire Departments.

[14] NFPA 1960 (2024). Standard for Fire Hose Connections.

[15] WFR Fire (2024). KrakenEXO Fire Hose 50ft Lengths.

Journal of the Society of Disaster Information ISSN:1976-2208(Print) 2671-5287(Online) 한국재난정보학회논문집

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