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Mon, July 10, 2017 Comments off on how Do You label Radioactive materials for Shipping?by Dr. Zoomie

Dear Dr. Zoomie: We’re a well-logging agency and we ship and also transport radioactive products sometimes and also I just found out we’re an alleged be labeling our packages. I’m not quite sure exactly how to figure out the right label come use. Have the right to you help me? Thanks!

Yeah – this is a usual question and a place where people make a the majority of mistakes. First, the chances that your car will it is in stopped and that you’ll get in trouble for make a failure – pretty slim odds. Top top the other hand, you have to follow the rule whether friend think you’re going come get recorded or not – it’s the right thing come do. Not just that, yet if she doing points the right means it doesn’t matter if friend do acquire stopped due to the fact that you’ll be doing points correctly. So here goes!

The very first concept you have to learn is the transfer Index (abbreviated TI). The move Index is simply the radiation dose price that you measure up at a street of 1 meter from her package, in mR/hr. So if you acquire a reading of, say, 1.3 mR/hr a meter far from the package climate the TI is 1.3; if you placed some additional shielding around the same source and alleviate the dose price to 0.5 climate the TI (for the exact same source) is lessened to 0.5. Therefore the TI has nothing to do with the amount of radioactivity in the package – it only reflects the radiation dose price you measure up a meter from the package surface.

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A few things come remember – alpha radiation can’t even penetrate with a sheet of paper, so if your package contains only alpha radioactivity then her TI will certainly be zero no matter just how much radiation is current (beta resources are comparable – you might get readings indigenous a high-energy beta emitter such together strontium-90, but might have no readings at every from a carbon-14 source). In addition, you have to remember that a neutron-emitting source (such as numerous well-logging sources) will be create radiation that can not be detected by all radiation tools – you must use a spirit detector to measure neutron radiation. Oh – and also don’t use a Geiger counter to measure up radiation dose rates unless the an energy-compensated GM; any type of other kind of GM detector is most likely to provide erroneous readings.

OK – so as soon as you’ve gained the TI established then friend can acquire a start on figuring out exactly how to brand your package.

There space three labels you have to pick from, White 1, Yellow 2, and Yellow 3.

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White 1 Radiation Label


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White 1 Radiation Label


The lowest level of brand is a White 1. If the radiation level in ~ the surface ar of the package (what you would certainly measure by putting your radiation detector on call with the package surface) is less than 0.5 mR/hr then it deserve to be labeled through the White 1 label. White 1 packages don’t have a carry Index – by the moment you acquire to a distance of a meter over there won’t it is in anything that you can measure.

Yellow 2 Radiation Label


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Yellow 2 Radiation Label


Next is Yellow 2. You will usage a Yellow 2 brand for packages with surface radiation dose rates of up to 50 mR/hr and also that are much less than 1 mR/hr (TI

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Yellow 3 Radiation Label