National and International Transport of Radioactive Materials—An Introductory Survey

1993 ◽  
Vol 4 (2) ◽  
pp. 77-88 ◽  
Author(s):  
M. S. T. Price
Author(s):  
Ashraf Elsayed Mohamed Mohamed

Every day thousands of shipments of radioactive materials are transported on international and national routes. These consignments, which are carried by road, rail, sea, air and inland waterway, can range from smoke detectors and cobalt sources for medical uses to reprocessed fuel for use in electricity generation. The transport of radioactive materials worldwide is governed by stringent regulatory regime, which includes standards, codes and regulations that have been continuously revised and updated over the past four decades. The safety measures have been developed to protect the general public, transport workers, emergency response teams and the environment against the risks posed by the cargoes. These risks include the radioactivity itself and other chemical risks that the cargoes may pose, such as toxicity or corrosivity. In addition to the safety regulations, the regulatory regime addresses other, related issues such as physical protection and liability. It was recognized that these standards should provide a uniform, global regime to ensure that all parties apply the same provisions. Since 1961, the UN (United Nations) has published and periodically reviewed and updated the regulations for the safe transport of radioactive material. These regulations are used today by more than 60 countries as the basic for their national regulations. In addition, the main international modal organizations responsible for the safe transport of dangerous goods by road, rail, sea, air and inland waterways have incorporated the relevant parts of the UN regulations into their own instruments. This paper will discuss and outline the principal regulations that apply to the transport of radioactive materials such as the UN regulations for the safe transport of radioactive materials, The UN regime governing the international transport of dangerous goods, the principal modal regulations governing the transport of dangerous goods and achievement of a more harmonized regime. and the international organizations responsible for their development and implementation.


Author(s):  
Wang Yue ◽  
Zhan Lechang ◽  
Ma Wenjuan ◽  
Zhang Yongxin ◽  
Ma Li

Due to the potentially dangerous properties of radioactive material, it is during the transport that the process of nuclear energy and technology uses are prone to nuclear and radiation accidents. Radioactive material hence must be transported with reasonable containers to achieve heat dissipation, confinement of radioactive material, radiation shielding and prevention of nuclear criticality. The key to transport safety lies in the designing and manufacturing quality of the transport containers. Therefore, the safety supervision for transport containers of radioactive material is a guarantee for the environment and the public from nuclear and radiation hazards, also is international general practice. As the most authoritative international organization, International Atomic Energy Agenda (IAEA) draws up and regularly revises safety regulation ‘Regulation for the Safe Transport of Radioactive Material’, which proposes technical indicators for transport containers of radioactive material and responsibility of competent authorities. According to the transport modes, other international organizations, such as International Maritime Organization, International Civil Aviation Organization, International Air Transport Association, United Nations Economic Commission for Europe, enacted related transport safety regulations based on actual needs. This paper introduces the administrative licensing approval process for the transport containers of radioactive material in China and the research on competent authority and approval procedure in American, Russia, France, Canada, Germany and Great Britain. In China, National Nuclear Safe Administration (NNSA) is responsible for the licensing approval for the transport containers of radioactive material, including designing, manufacturing, using and transporting of transport containers. NNSA also organizes and formulates relevant administrative regulations and approval procedures, and has issued administrative regulation ‘Regulation on the Safe Management for the Transport of Radioactive Material’ and a series of administrative rules, management procedures, guide, technical documents and so on. These regulations established the sort management of radioactive materials and the responsibility for competent authority, and also stipulated approval and supervision for transport and transport containers of radioactive materials. While some other countries, such as America, certifies the transport containers of radioactive material to achieve the control. The domestic and overseas research into administrative licensing approval processes for transport containers is in view of the increasing transport of radioactive material among countries and the requirement of international transport. Transport containers with material of high potential risk, such as spent fuel, need to obtain the transport approval from the competent authority of transit or arrival country. Therefore, the research on domestic and other countries licensing management of transport containers of radioactive material, which is not only beneficial to improving the transport safety management of radioactive material in China, but also can promote international transport campaigns of radioactive material..


1953 ◽  
Vol 32 (10) ◽  
pp. 450
Author(s):  
F.E. Simon ◽  
John Cockcroft ◽  
Henry Seligman ◽  
Burton Foringer ◽  
A.O'B Brandon ◽  
...  

1972 ◽  
Vol 70 (1) ◽  
pp. 48-55 ◽  
Author(s):  
Mario A. Pisarev ◽  
Noe Altschuler ◽  
Leslie J. DeGroot

ABSTRACT The process of secretion of the thyroid hormone involves several steps: pinocytosis of thyroglobulin, fusion of the colloid droplets with the lysosomes, digestion of thyroglobulin by a cathepsin, dehalogenation of tyrosines and release of thyronines into the blood stream. The present paper describes a double isotope technique for studying the first two steps. Thyrotrophin (TSH) administration to rats increased the radioactivity present in all fractions, specially in the 15 000 × g pellet. When the subcellular distribution of acid phosphatase was determined, the highest specific activity was found in this fraction, thus indicating the presence of lysosomes. The content of radioactive materials in the 15 000 × g pellet was analyzed by trichloroacetic acid precipitation and by ascending paper chromatography using n-butanol:ethanol:ammonium hydroxide (5:1:2;v/v) as solvent system. The results obtained showed that 90% of the radioactivity was protein bound and strongly suggest that this material is thyroglobulin.


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