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International Intercalibration and Intercomparison Program radon daughter measurements: exercise at the Twilight Mine, Uravan, Co.

Authors
Cooper-WE; Holub-RF
Source
Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 9257, 1990 Jan; :1-13
NIOSHTIC No.
10008170
Abstract
The International Intercalibration and Intercomparison Program (IIIP), consisting of several selected laboratories from four countries, held a radon progeny intercomparison measurement at the U.S. Bureau of Mines experimental Twilight Mine on September 12-14, 1988. Grab samples were taken at four different conditions of low and high radon progeny and condensation nuclei concentrations, respectively. The results showed good agreement among all seven participants. The coefficient of variation of all measurements was 4.7 pct; after minor corrections for flows and some systematic biases, it was reduced to 3.2 pct.
Keywords
Radon-daughters; Mining-industry; Underground-mining; Analytical-instruments; Analytical-processes; Laboratory-testing
Publication Date
19900101
Document Type
IH; Information Circular
Fiscal Year
1990
NTIS Accession No.
NTIS Price
Identifying No.
IC-9257
NIOSH Division
DRC
Source Name
Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 9257
State
CO
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