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Pangea performed a
radiological survey of a “designated Vehicle Position” area, which was
suspected of containing radioactive or other hazardous materials.
Pangea’s investigation was to evaluate whether an elevated level of
radiation and residual radioactive materials were present in the facility.
The work instruments included:
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Berkeley Nucleonics SAM 935 Portable Gamma
Spectrometer with multi-channel analyzer
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Ludlum 44-9 Pancake Probe with Model 3 G-M Survey
Meter
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Ludlum 43-10 ZnS Scintillation Counter with Model 224
Scaler
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Ludlum Model 19 Micro R Meter
Measurements consisted of direct radiation measurements
and readings from wipe samples, i.e., removable radioactivity
measurements. The purpose of
the direct and removable radioactivity measurements was to determine
whether the contamination levels exceeded the surface contamination limits
specified in MARSSIM and NRC Regulatory guides.
Laboratory
analysis was to identify the specific isotopes present in the wipe
samples. If levels of
radioactivity were present in the wipe samples in concentrations greater
than normal background levels, information on the specific isotopes
present would be needed to determine the appropriate release limits.
All samples were packaged and labeled in accordance with applicable
U.S. Dept. of Transportation (DOT) hazardous regulation prior to shipment
to the offsite analytical laboratory.
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