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@INPROCEEDINGS{Hill:173057,
author = {Hill, Peter and Froning, Martina},
title = {{Q}uality {A}ssurance of {T}esting {M}ethods at {CIMB}-{J}},
reportid = {FZJ-2014-06470},
year = {2014},
abstract = {QUALITY ASSURANCE OF TESTING METHODS AT CIMB-JP.Hill,
M.FroningForschungszentrum Jülich GmbH, S, 52425 Jülich,
GermanyIntroduction: The Competent Incorporation Measurement
Body at Jülich (CIMB-J) is notified for in-vivo and
in-vitro assessments of internal dose in the surveillance of
occupational radiation workers. Activities within this
testing field are accredited according to the German
adaption of ISO/IEC 17025:2005. Details on CIMB-J itself is
subject of another contribution to this conference. Here the
quality assurance of testing methods at CIMB-J is described.
Testing methods: Testing methods used to assess the
incorporation of radionuclides include ICP-MS, Low-Level
Beta counting, LSC, Alpha spectrometry and whole-body
counting. A wide range of Alpha-, Beta-, Gamma- and other
emitters is covered by these methods.Quality assurance:
CIMB-J puts a lot of effort into assuring the quality of its
testing results. High demands on the quality of test methods
such as the accuracy and traceability of test results
require a systematic quality assurance. As well as internal
measures as external measures are applied.Traceability: An
important element of QA is traceability of results. Special
care must be taken in in-vitro monitoring where generally
excreta samples are shipped by dispatch. The documentation
includes (1) personal-, sample and monitoring data and
coding of data, (2) characterization of excreta samples and
(3) registration of essential analytical steps performed. In
in-vivo monitoring documentation of personal and monitoring
data is associated with the appearance in person of the
proband at the laboratory and generally done in advance of
the measurement.Internal laboratory measures: Routine
operational tests of the measuring systems are an essential
part of QA measures. These are periodic function checks,
periodic verification of the measuring systems, regular
examination of background measurements and energy
calibrations as well as blank value controls of chemical
substances used. They cover a broad range from temperature
controls (easy to be done) over checking vacuum pumps up to
periodic verification of background and detection
efficencies. For the whole-body counter the results of daily
measurements with a reference source are documented in a
database. Such the long-term behavior of certain parameters,
e.g. energy drifts, can be observed.External laboratory
measures: External QA is performed by participation in
laboratory intercomparisons on a national and international
level for direct and indirect measurements. Depending on the
test, the internal dose assessment is also included. These
activities are organized and evaluate by external experts,
e.g. the German Federal Office for Radiation Protection or
the PROCORAD organization. Final remark: The measures for
quality assurance involve substantial technical and
organizational complexity. The high costs in terms of time
and finances are justified by the resulting reliabilty of
testing methods, by documented proof of expertise and by
high customer satisfaction.},
month = {Sep},
date = {2014-09-24},
organization = {VI International Conference
'Semipalatinsk Test Site, Radiation
Legacy and Development Perspectives,
Kurchatow (Kazakhstan), 24 Sep 2014 -
26 Sep 2014},
subtyp = {After Call},
cin = {S-B / S-BI},
cid = {I:(DE-Juel1)S-B-20090406 / I:(DE-Juel1)S-BI-20100518},
pnm = {899 - ohne Topic (POF2-899)},
pid = {G:(DE-HGF)POF2-899},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/173057},
}