Type: Lessons Learned
Publisher: Brookhaven National Laboratory, Upton, NY
Published As: Public
Lessons Learned: BNL uses an instrument for radioactive shipments (Eberline RO-20 ion chamber) which is energy independent across the entire spectrum of gamma energies encountered at BNL. GE Healthcare uses an instrument for receipt of radioactive material shipments (Eberline HP-270 energy compensated Geiger-Mueller tube attached to a digital readout) which is very energy dependent particularly at low energy <200 keV and was not fully aware of the effect differing energy levels have on the HP-270. BNL records an average dose rate based on readings identified over a 10 second interval (industry standard) this is particularly important when using digital readouts as they fluctuate dramatically ( 20%). GE Healthcare shipping and receiving staff does not average their readings; in fact they record the highest instantaneous digital reading identified.
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