Page 672 - Radiation Safety
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Type                      Nuclides                        Characteristics                               Occurrence



                          Radium – scales              Radium-                        Hard deposits of calcium,                     Wet parts of oil

                                                       226,Radium-228 +  strontium, barium sulfates                                 production installations;

                                                       decay products                 and carbonates                                Well completions


                          Radium – sludge Radium-226,                                 Sand, clay, paraffin, heavy                   Separators; Skimmer

                                                       Radium-228 +                   metals                                        tanks

                                                       decay products


                          Lead- deposits               Lead-210 + decay               Stable lead deposits                          Wet parts of gas

                                                       products                                                                     production installations;

                                                                                                                                    Well completion

                          Lead- films                  Lead-210 products  Very thin films                                           Oil and gas treatment


                                                       + decay products                                                             transport

                          Natural gas                  Radon-222                      Noble gas                                     Consumers domain



                          Produced Water               Radium-226,                    More or less saline, large                    Each production facility

                                                       Radium-228                     volume in oil production

                                                       (and/or) Lead-210



                          Source: Guidelines for Naturally Occurring Radioactive Materials, Australian Petroleum Production &

                          Exploration Association Limited, 2002                                                                                                                 17
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