irra_sample - MIT OpenCourseWare http://ocw.mit.edu 2.672...

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Unformatted text preview: MIT OpenCourseWare http://ocw.mit.edu 2.672 Project Laboratory Spring 2009 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms . 5. Irradiation Sample Transfer Line Snubbing Section Behavior The M.I.T. reactor is used to irradiate various isotope samples so that they can be used for medical treatment and research. These samples are packaged in a small cylinder and then inserted into a curved transfer line and lowered to the core of the reactor. (The curved line is to prevent personnel from radiation exposure at the point of insertion.) The sample is retrieved after a suitable interval. If the retrieval system fails, the sample drops to the bottom. To prevent such an accident from damaging the transfer line or the materials in the cylinder, a snug-fitting sleeve section has been installed in the bottom of the transfer line. The clearance between the cylinder and the tube in this section is small enough that air is trapped below the cylinder and is...
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irra_sample - MIT OpenCourseWare http://ocw.mit.edu 2.672...

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