Safety_Series_041_1975 - gnssn - International Atomic Energy ...

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42 APPENDIX I
maintained. The la b ora tories should maintain uniform m inim um
detectable le v e l capabilities and should routinely take part in in te r­
laboratory quality con trol p rogra m m es. A minimum quality con trol
frequency of 10% o f all nuclide analysis, including in-house blanks,
standards and splits is recom m ended.
A nalytical con trol m ethods generally include cro ss-ch e ck in g
or splitting sam ples with a con trol laboratory. A c r o s s -c h e c k
involves the analyses o f sam ples provided by the con trol laboratory
and com parison o f the resu lts with those of the con trol laboratory
as w ell as with other la b ora tories that receiv ed portions of the sam e
sam ples. Splitting a sam ple involves obtaining two iden tical sam ples
from a single collection , one sam ple being, analysed by the m on i­
toring laboratory and the other by the con trol la b oratory, with
subsequent com p arison of resu lts. When splitting sam ples for
interlaboratory com p a rison , it is very im portant that both sam ples
parts are represen tative of the m edia in question.
Some typical analytical m ethods and the associated detection
capabilities are illu strated in Tables I and II.
REPORTING PROCEDURES
R eporting of data should be done follow ing a clea r and uniform
form at suitable for autom atic data p rocessin g . '
The reported inform ation should generally include the follow ing
inform ation:
(1) G eographic location of sam ple site
(2) Sample type (m edia)
(3) Sample num ber (optional)
(4) Identification o r organization o r person collecting the sample
(5) Identification of organization analysing the sam ple
(6) Tim e and date sam ple was taken (include duration of sam ple
period for integrated sam ples)
(7) Sample preparation as appropriate (e. g. concentration or
wet versu s dry)
(8) Type o f analysis p erform ed
(9) Value and units for each analysis and associated 2-sigm a
e rro r
(10) P aram eters needed to calculate decay of sam ple p rio r to
analysis where sh ort-liv ed radionuclides are involved
(11) Any known events that may have affected the analytical
resu lts.
Much o f the above inform ation, such as sam ple site location and
organization iden tification , can be coded to reduce the re co rd volum e.