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Guidance on Long-Term Reevaluation of Intakes
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DOE-STD-1121-98
possible due to resource or data limitations. In such cases, all available dose and intake data should be
maintained in an individual's records.
9.7 RECORDS ASSOCIATED WITH BIOASSAY MEASUREMENTS AND THEIR
INTERPRETATION
Guidance on the type and extent of records associated with both in vivo and in vitro bioassay
measurements can be found in American National Standard "Practice for Occupational Radiation
Exposure Records System" (HPS 1999c).
9.8 DOCUMENTING, RECORDING, AND RETAINING OF PAEC, PAEE, INTAKE, AND
HE,50 FROM RADON AND THORON
Since radon quantities and units differ from the traditional activity concentration (expressed in
:Ci/cm3) and intake (expressed in :Ci), records for exposures and doses from radon, thoron, and their
short-lived decay products will be different. Record should include
C
radon concentrations, if measured (pCi/L may be used for the time being, but units must be
specified, never assumed)
C
the value of FRn (if applicable) and whether it is assumed or measured
C
worker exposure times or stay times (hours)
C
assigned protection factors (APF) for respirators, if any
C
potential alpha energy concentration, PAEC (WL)
C
potential alpha energy exposure, PAEE (WLM)
C
radon and thoron progeny intake, I, in J
C
dose conversion factors (rems/WLM; these may change in the future)
C
HE,50 and Hlung, 50.
Each exposed worker must be unambiguously associated with the air sample result that represents his or
her exposure, including the flow rate, filter type, start time, stop time, and date(s) of operation.
Calibration records for and the identities of active air samplers used for personnel monitoring must
be accessible. Radiological work permits (RWPs) may be a convenient way to record this information.
Archived procedure manuals must specify instructions for operation of active air samplers and the types
of filters that are acceptable for use.
103


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