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transport of dangerous goods and risk management - Kirilo Savić

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TRANSPORT OF DANGEROUS GOODS AND RISK MANAGEMENT 204It requires special h<strong>and</strong>ling, storage, accountability, quality assurance, <strong>and</strong> security [1, 2]. Accident prevention canbe mainly accomplished with proper mixed packaging <strong>of</strong> XO during the <strong>transport</strong> <strong>and</strong> that is why it is essential toclassify correctly XO according to adequate hazard division (HD) <strong>and</strong> storage compatibility (SC) groups.CLASSIFICATION OF XO IN HD AND SC GROUPSConventional XO is a hazardous good. The main danger for human beings <strong>and</strong> animals in the vicinity <strong>of</strong> detonatingXO is generally a combination <strong>of</strong> blast, fragmentation <strong>and</strong> incendiary effects. Moreover, some types <strong>of</strong> XO alsocontain toxic <strong>and</strong>/or corrosive material. According to ADR (European Agreement concerning the InternationalCarriage <strong>of</strong> Dangerous Goods by Road) <strong>dangerous</strong> <strong>goods</strong> are divided into 9 different classes.Conventional XO <strong>and</strong> explosive is grouped in class 1 as hazard divisions 1.1 to 1.6. Due to the considerabledifferences between the types <strong>of</strong> XO <strong>goods</strong> <strong>of</strong> hazard divisions 1.1 to 1.6 are again subdivided into compatibilitygroups.Hazard Division 1.1 substances <strong>and</strong> items have a mass explosion hazard. A mass explosion is an explosion thataffects almost the entire load instantaneously <strong>and</strong> results in severe devastation or destruction close to the detonationsite. Within a wide radius, blasts, projected fragments <strong>and</strong> debris as well as ground waves pose a danger to thevicinity.Hazard Division 1.2 substances <strong>and</strong> items do not have a mass explosion hazard. Subsequent single explosions(detonation, deflagration) occur in ever-shorter intervals. Depending on the size <strong>of</strong> the items <strong>and</strong> the explosivemass, the hazard through projected fragments <strong>and</strong> debris covers a wide radius. The blast pressure affects only theimmediate vicinity.Hazard Division 1.3 substances <strong>and</strong> items do not have a mass explosion hazard. They have a fire hazard <strong>and</strong> a minorhazard either because <strong>of</strong> the blast pressure or projected fragments <strong>and</strong> debris or both. Te burning process resultseither in a significant radiant heat (for instance in the case <strong>of</strong> propelling charges) or the agents <strong>and</strong> itemssubsequently burn or explode in such a way as to cause a minor blast pressure or projection <strong>of</strong> fragments <strong>and</strong> debrisor both. In case <strong>of</strong> fire, the vicinity is exposed to the danger <strong>of</strong> radiant heat <strong>and</strong> projected burning parts <strong>and</strong> items(for instance pyrotechnic flares) or packaging, while the hazards <strong>of</strong> blast pressure <strong>and</strong> projected fragments <strong>and</strong>debris are relatively low. Apart from that, there will be heavy smoke when pyrotechnic agents <strong>and</strong> particularlysmoke generating agents are burned. Smoke may have a caustic <strong>and</strong>/or toxic effect.Hazard Division 1.4 substances <strong>and</strong> items only have a minor explosion hazard when the propelling charge or theexplosive agent ignites during <strong>transport</strong>. Te effects are basically confined to the package itself, <strong>and</strong> it is unlikely thatlarger fragments will be projected over longer distances. An external fire must not cause virtually instantaneousexplosion <strong>of</strong> almost the whole content <strong>of</strong> the package. Te closer vicinity is subject to the danger <strong>of</strong> radiant heat <strong>and</strong>fire (normal fire). Igniter caps, high explosive mixtures or components such as cartridge shells that are propelledfrom the origin <strong>of</strong> the fire may lead to eye injuries <strong>and</strong> minor burns.Hazard Division 1.5 substances are very insensitive <strong>and</strong> have a mass explosion hazard. They are so insensitive thatthere is very little probability <strong>of</strong> initiation or <strong>of</strong> transition from burning to detonation under normal <strong>transport</strong>ationconditions. Te minimum requirement for these substances is that they must not explode in an external fire test.Hazard Division 1.6 items are extremely insensitive <strong>and</strong> do not have a mass explosion hazard. These items containonly extremely insensitive detonating substances <strong>and</strong> demonstrate a negligible probability <strong>of</strong> accidental initiation orexplosion propagation. Te danger posed by subdivision 1.6 items is limited to the explosion <strong>of</strong> a single item [3, 4].

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