transport of dangerous goods and risk management - Kirilo SaviÄ

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TRANSPORT OF DANGEROUS GOODS AND RISK MANAGEMENT 124Figure 13. Temperature-field – Due to the longitudinal (air) movement towards the heigher geodetical position ofthe tunnel, one can notice the displacement of the hottest zone within the tunnel central lineDISCUSSION OF THE OBSERVED PHENOMENAOne of the most dangerous occurrences during the accidental fires within an object (built up out of RC construction)is so-called concrete-spaling 48 that is orchestrated by the (combustion-) irradiative heat impacts and finally, by thetemperature distribution onto the some concrete inner-body. Distinguishing two major groups of the flame-shapes inenclosure: the ones, that impinge on the tunnel roof and the others that, influenced by the longitudinal (even natural)(air)stream, do not; during the computational-investigations in tunnel “Sentvid” we recognise the latter ones in theresults of our research on 40MW-fire-scenario.Having established flame front, we noticed such behaviour both of the flame and of the gaseous products ofcombustion, where axis of the flame is pushed away, because of the interference of the buoyancy and longitudinal(air) movement 49 that was of a natural kind in the 120s of the computational experiment. As one moves further ofthe fire-source, the buoyancy gains on the strength due to the increased temperature 49 .The velocity field is “discovering” also the place where “Sentvid”-tunnel changes the shape from the rectangular- tothe “horse-shoe”-shaped one (Figure 14, Figure 15). The velocity field is here more intense near ceiling of thetunnel – since on the flat-ceiling the smoke-stream is distributed fairly equally, where more “channeled”- ceiling ina narrowed space amplifies the velocity.
TRANSPORT OF DANGEROUS GOODS AND RISK MANAGEMENT 125Figure 14. Look from below: The 7 th second of the 40MW-fire where velocitiy field is obeying the tree-shaped formpointing at the distribution of the gaseous combustion productsFigure 15. Velocity field is not only pointing to the area with an increased buoyancy in the zone of the flame, but itis also “descovering” the place where the tunnel is changing it´s cross-section-shape (from ractangularshape to a“Horse-shoe”-shape)
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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 81 and 82: TRANSPORT OF DANGEROUS GOODS AND RI
Page 85 and 86: Table 8. Typical hazardous waste ma
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Page 109 and 110: BIBLIOGRAPHYTRANSPORT OF DANGEROUS
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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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