Impact of the transportation regulations on the role of the health physicist
- ed.
From third Health Physics Society midyear topical symposium; Los Angeles, California, USA (29 Jan 1969). See CONF-690103P3. The role of the health physicist in relation to packaging and transportation of radioactive materials is discussed. The important bases of the United States and International regulations, which relate to health physics concepts are elaborated. An emphasis is made on the importance of the operating health physicist being well informed of the availability, applicability, and interpretation of the transportation regulations, especially in view of his frequent role as a consultant to other groups, such as the engineering and traffic functions, on such matters. A review is also made of the sources and applicability of the current regulations for packaging and transportation of radioactive materials, including the recent revisions to the U. S. Department of Transportation regulations. (auth) H03 H0230213 The Chalk River MP Tandem accelerator has been upgraded from 10 MV to 13 MV operation by the installation of new resistors and a set of high-gradient stainless-steel electrode accelerating tubes, manufactured by High Voltage Engineering Corporation. Without tubes, the column structure of the accelerator was tested at voltages up to 16 MV using SF/sub 6/ at 90 psig (0.71 MN/m/sup 2/) as insulating gas. The most important requirement for this high voltage operation was the elimination of dust and larger fragnaents of the belt falling from the column; the insulating gas pressure was not critical. Oxygen appeared unsuitable as a stripper gas, to be pumped irreversibly by the new tubes and to result in unstable operation. Nitrogen gas is a satisfactory substitute. The transmission of the new tubes is 40 to 50% for protons and oxygen from a low emittance direct extraction duoplasmatron or from a Heinicke- Penning source. Operation at 13 MV for long periods has been achieved for a variety of ions with as few as two voltage breakdowns per 24 hours. Conditioning and operating procedures are described. (auth)
- Research Organization:
- Dept. of Transportation, Washington, DC
- NSA Number:
- NSA-29-030212
- OSTI ID:
- 4310257
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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