Reference, Questions and Help > Instrument Q&A

What calibration sources do you use for dose rate instuments?

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jjordan:
RadGal,
We calibrate with the Shepard, which is a Cs137 source. We source check with the Sr90 source, and after we source check, we response check with a button source in the Inst Issue room before use and it is also Cs137. Our Beta correction factors are the industry standard 4 and 8 (bagged) :-*

spentfuel:
we also cal with shepherd with Cs-137 sources but we do a beta response (not cal) with a U-235/238 slab source and use a beta correction factor in the feild dependent upon the amount of poly used to protect the instrument.  no bag x4, one bag x5, two bags x6

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