Page 73 - All About History - Issue 180-19
P. 73

Ghosts Of Chernobyl











                          Nuclear fallout moved through the environment in the days, weeks and months after the disaster



                    Surface dust
                Radioactive particles coated
                buildings, roads, rivers, lakes,                                                                                           Contaminated air
                    parks and gardens.                                                                                                   For ten days after the disaster,
                                                                                                                                          clouds of radioactive particles
                                                               Deposition           The fallout started as
                                    Surface deposits                                                                                          billowed into the air.
                                                                                   particles thrown up into
                                                                                           the air


                                                                                Direct           External
                                                                               inhalation        irradiation
                                                                   Inhalation of
                                                                 radioactive dust                                       Deposition
                                                                                                         Deposition                    Deposition
                                                                                                         onto skin or
                                                                                                          clothing
                                Runoff                           External                                                                                     Root
                                water                           irradiation                                                                                  uptake
                                                                                                                                                           Plants took up
                                                                                                                                                             radioactive
                                                                                                                                                            caesium-137,
                                                                                                                             Plants and crops
                                                              External                                                                                      adding it into
                                                             irradiation                                                                                     their stems
                                                                                                                                                             and leaves.
                                              Sand and sediment
                                                                       External
                     Water bodies                                     irradiation
                                                                                                              Particles
                                                                                                              on plants
                                                                                                               Rain washed
                                                                                                               radioactive                    Root uptake
                                                                   In the water
                                                                                                              particles onto
                                                                  Radioactive particles                       leaves and into           Root uptake
                                                                     dropped to the
                                                                                                                 the soil.
                                                                   bottom of lakes and                Ingestion
                                                                  ponds, building up in
                                                                     the sediment.
                                                                                                                                                       Topsoil/subsoil
                                                                          Aquatic
                                                                           plants
                                                                         Plants took up
                                                 Aquatic plants           caesium-137,
                                                                            bringing
                                                                           radioactive
                                                                          particles into
                                                                                                              Milk, meat,
                                                                         the underwater                          etc
                                                                           food chain.
                                                                                                                                    Animals
                  Fish                                                                                                                             Meat and milk
             Fish accumulated                                                                                                                 Cows fed on contaminated plants
           iodine-131 in their flesh            Aquatic animals                                                                                  produced milk containing
            and strontium-90 in                                                                                                                iodine-131 and meat containing
               their bones.                                                                                                                            caesium-137.
                                              Drinking water
                                                                                      Food and drink









           01:23:40 01:23:58 01:28                              02:15             06:35             10:00               36 hours after      Swedish            The US
                                                                                                                                                               gets its first
                                                                                                                                            monitors
                                                                                                                        the disaster,
           The emergency    A steam           With the          An emergency      The firefighters   Sand, clay,        officials begin     pick up large      look at the
           shutdown         explosion         reactor’s         meeting of        have              boron, lead         an evacuation       amounts of         disaster
           button is        occurs as the     exposure to air   Soviet officials   successfully     and dolomite        of 115,000          radiation.         from satellite
           pressed, but     coolant water is  starting fires,   gathers,          put out the       is dropped          DAY TWO – 27 APRIL 1986  people from   DAY THREE – 28 APRIL 1986  Officials   DAY FOUR – 29 APRIL 1986  photos and
           the control      vaporised in the  firefighters      closing roads     fires except for   onto the           Pripyat and         admit there        see the full
           rods jam as      pipes, blowing    arrive, but wear  in and out of     the one in the    burning core        nearby towns        has been an        devastation
           they enter       the roof off the  no protective     the nearby        reactor core,     in attempts         and villages.       accident but       of the
           the core         reactor           clothing for      town of           which burns for   to extinguish       They’re told it’s   claim it is        incident
                                              radiation         Pripyat           several days      the fire            temporary           under control

                                                                                                                                                                           73
   68   69   70   71   72   73   74   75   76   77   78