Measurements of fallout207Bi in environmental samples were reported for water filters used at the Scott Base in Antarctica and the surface soils containing high amount of fallout nuclides. The level of207Bi in these samples was found to be nearly the same or a little higher than that of fallout60Co and the207Bi/137Cs activity ratios were in the range of 0.001-0.018. Contamination of bismuth by207Bi was found in “high purity” bismuth on market and its level was measured to be 1.9 mBq/g-Bi.
Utilization of the computer for radiation control is planned and performed in many radioisotope laboratories. But each laboratory has their own situation which makes the planning difficult with respect to the hardware and particularly to the software. What is the most important is that the practice of radiation management is different for each laboratory both in point of view and in the form of recording. Therefore, the computer program for the radiation management, especially for the management of radioisotopes is required to meet many amendments. In this standpoint, we have developed a “programless language” or “programless software” and have used in our work for several years. As the result of our experience, we have found that the programless language is quite satisfactory for the management of radioisotopes and that it has an advantage in some aspects over conventional programs. It is thought that this “programless language” is effective not only for our own works, but also applicable to other radioisotope laboratories.