transport of dangerous goods and risk management - Kirilo SaviÄ

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TRANSPORT OF DANGEROUS GOODS AND RISK MANAGEMENT 126Additional impact of irradiance and temperature is given through viewing at the central-line through the Sentvid(crossing the middle of the fire-place, Figure 15).On the places with the most developed irradiance, one can notice the places with the highest temperature (hotspots),occurred, due to the fluctuations in the combustion. And this especially is the case of constructive interference ofthe buoyancy with the slow longitudinal natural flow (towards the higher geodetic position, according to the tunneldenivelation of 2,2%), wherever the buoyant forces are stronger than convection of the fire plume and the hot gasstream,which is above the fire-place and near-fire-area.These occurrences do present in this phase of the fire-development already a dangerous point for the construction ofthe tunnel body. Therefore, in such fire scenario it would be recommended that two couples of fans ought to beswitched-on and in this way all the velocities (computationally estimated) according to the traffic-direction arepositive (Figures 16-18): In a 3-lane-tube, 1.63 m/s; in a 2-lane- tube differs from 0.10 up to 0.31 m/s; and in an 1-lane-tube, 2.60 m/s.Figure 16. Air velocity, tube with 3 lanes – fire 40 MW, with applied artificial longitudinal ventilation of twocouples of fans
TRANSPORT OF DANGEROUS GOODS AND RISK MANAGEMENT 127Figure 17. Air velocity, tube with 2 lanes – fire 40 MW, two couples of fans employedFigure 18. Air velocity, exit-tube with 1 lane – fire 40 MW, two couples of fans employedThe earlier-recognised trend in experimental approaches 17,20 was base for the explanation of these recordedmoments in our computational-simulation. However, the buoyant or “chimney”-effect of the additional exit-line (tothe local road) was weaker then expected in first 120s of the fire-event, judging on the velocity-field. So, an impactof the tunnel-bifurcation did not appear as expected and velocity-field stayed in alignment with the main tunneldirection.
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ISBN 978-86-83059-06-5Editor-in-Chi
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TRANSPORT OF DANGEROUS GOODSAND RIS
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EDITORIALLand transport Pan- Europe
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Contents:INTEGRATED MODEL AND INFOR
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TRANSPORT OF DANGEROUS GOODS AND RI
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Figure 3. Algorithm of Security Dat
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Figure 5. Algorithm of Ship Waste M
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Figure 7. Original Algorithm of Imp
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Figure 11. Original Algorithm of th
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Figure 13. Original Algorithm of th
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Figure 15. Original Algorithm of Ot
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Figure 18. The original algorithm o
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Figure 20. Original Algorithm of Ac
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Figure 23. Original Algorithm of In
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Figure 25. Original Algorithm of Ac
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Table 1. Classification of waste th
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Table 3 Classification of waste tha
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Table 3b Classification of waste th
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Table 3d: Classification of waste t
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Table 3f: Classification of waste t
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Table 6 Classes of the compounds th
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Table 6b Classes of the compounds t
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Page 85 and 86: Table 8. Typical hazardous waste ma
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UDK:355.69614.878.084TRANSPORT OF D
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Oil, gas and mineralsTRANSPORT OF D
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UDK:811.111'25TRANSPORT OF DANGEROU
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transport of dangerous goods and risk management - Kirilo SaviÄ