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Еng. vladislav stoykov, vlado_Prof. DSc. Eng. mihail mihaylov
ABSTRACT

The present works is related to the idea of researching and modeling stationary low pressure water fixed firefighting systems (FFFS) for fire protection of road tunnels with water mist. The GW M5 is tested, which is a compact, low pressure water mist nozzle specifically designed for overall and local use for protective water mist fire extinguishing systems. The main purpose of water mist systems is to prevent the full development of a fire in a road tunnel to its maximum capacity and, if possible, to ensure that damaged cars in a tunnel pipe can be separated from the rest of the passenger traffic, to localize and limit the spread of a possible fire inside a broken car. The operation of these FFFS will ensure the problem-free movement of other road users in the tunnel and also prevent the fire from spreading to other vehicles. Water mist systems are inherently effective in the early stages of fire development.

KEYWORDS

fires in road tunnels; fixed firefighting systems (FFFS); water mist - classes and characteristics; low pressure water mist nozzle; stand for testing nozzles

REFERENCES

1. Fire Protection of high-rise Buildings with Water Mist. UC LGN 23, June 2018, www.LocalGov.co.uc
2. EN14972-1:2020 The European watermist standard. Implementation date 30-th June 2021.
3. BDS EN 14972-1:2021. Statsionarni pozharogasitelni instalatsii. Instalatsii s vodna magla. Chast 1: Proektirane, montirane, kontrolirane i poddrazhka, publ.19.05.2021 g.
4. BDS EN 14972-3:2022. Statsionarni pozharogasitelni instalatsii. Instalatsii s vodna magla. Chast 3: Protokol ot izpitvane na sistemi s avtomatichni dyuzi za ofisi, uchilishtni klasni stai i hoteli, 20.01.2022 g.
5. DIRECTIVE 2004/54/EC on minimum safety requirements for tunnels in the trans-European road network, 18.7.2004.
6. GW Sprinkler A/S Kastanievej 15 DK-5620 Glamsbjerg Denmark CVR/VAT No: 31 79 65 12.
7. NFPA 750 Standard on Water Mist Fire Protection Systems, 2019.
8. NFPA 25 Standard on sprinkler inspection forms.
9. GW Sprinkler A/S SN010 1001D GW M5.
10. Antonov, I.S. Prilozhna mehanika na fluidite. S., 2009, 2016.
11. FFFS-EVS for Highway Tunnels – Literature Survey and Synthesis, January 2020. Доклад № FHWA-HIF-20-016.
12. PIARC, Fixed Fire Fighting Systems in Road Tunnels: Current Practices and Recommendations. Permanent International Association of Road Congresses, Technical Committee on Road Tunnel Operation, 3.3, 2016.
13. Mihaylov, M., D. Makedonska. Izsledavne na dyuzi za pozharogasene s fino razprasnata voda v patni tuneli, toplotehnika, Godina H, Kniga 1, 2019, ISSN 1314-2550.

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