{"id":422158,"date":"2024-10-20T06:39:53","date_gmt":"2024-10-20T06:39:53","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-pd-iec-tr-61577-52019\/"},"modified":"2024-10-26T12:28:25","modified_gmt":"2024-10-26T12:28:25","slug":"bsi-pd-iec-tr-61577-52019","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-pd-iec-tr-61577-52019\/","title":{"rendered":"BSI PD IEC TR 61577-5:2019"},"content":{"rendered":"

This part of IEC 61577 provides basic data and technical information in order to support the design of instruments and their practical application for the measurement. The document covers 222<\/sup>Rn as well as 220<\/sup>Rn and the short-lived decay products of both. It is an accompanying document for the application of the technical standards series IEC 61577, and provides physical and technical fundamentals of the measurements methods. For more information, reference is made to the Bibliography.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
7<\/td>\nFOREWORD <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
10<\/td>\n3 Symbols, quantities and units
3.1 Symbols <\/td>\n<\/tr>\n
11<\/td>\n3.2 Quantities and units
4 Radon in the environment
4.1 Origin, genesis and decay <\/td>\n<\/tr>\n
12<\/td>\n4.2 Radon in the rocks and soils and its transport towards the atmosphere <\/td>\n<\/tr>\n
13<\/td>\n4.3 Radon concentration in the outdoor air
4.4 Radon concentration in houses and at workplaces <\/td>\n<\/tr>\n
14<\/td>\n5 Radon decay products in the atmosphere
5.1 Physical processes of decay products in gaseous media
Figures
Figure 1 \u2013 Diurnal variations of the radon activity concentration in the cellar, 1st and 2nd floor of a detached house measured over 12 days <\/td>\n<\/tr>\n
15<\/td>\n5.2 Aerosol characteristics and ventilation <\/td>\n<\/tr>\n
16<\/td>\n6 Physical and chemical properties of radon and radon decay products
6.1 Physical and chemical properties
6.2 Solubility of radon in liquids <\/td>\n<\/tr>\n
17<\/td>\n6.3 Radiological properties and radioactive equilibrium <\/td>\n<\/tr>\n
18<\/td>\nFigure 2 \u2013 Decay of 222Rn after injection of 1 000 Bq at the start time and generation of decay products
Figure 3 \u2013 Decay of 220Rn (Thoron) after injection of 1 000 Bq at the start time and generation of decay products
Figure 4 \u2013 Activity build-up of 222Rn and its decay products for a continuous supply of 222Rn with a rate of 1 Bq\/s (in the absence of initial activities)
Figure 5 \u2013 Activity build-up of 220Rn (Thoron) and its decay products for a continuous supply of 220Rn with a rate of 1 Bq\/s (in the absence of initial activities) <\/td>\n<\/tr>\n
19<\/td>\n6.4 Interaction of alpha particles with matter and energy deposition
Figure 6 \u2013 Total stopping power of alpha particles penetrating different materials, the graphs use data from [38] <\/td>\n<\/tr>\n
20<\/td>\n7 Measurement of 222Rn and 220Rn and their decay products
7.1 Relevant measurement quantities and units
7.1.1 Activity concentration (C)
7.1.2 Equilibrium equivalent activity concentration (EEC, Ceq) <\/td>\n<\/tr>\n
21<\/td>\n7.1.3 Equilibrium factor (F)
7.1.4 Exposure to radon (PRn)
Tables
Table 1 \u2013 Coefficients for the calculation of the equilibrium equivalent concentration from measured activity concentrations of radon progeny <\/td>\n<\/tr>\n
22<\/td>\n7.1.5 Potential alpha energy (\u03b5p)
7.1.6 Potential alpha energy concentration (Cp) <\/td>\n<\/tr>\n
23<\/td>\nTable 2 \u2013 Potential alpha energy per atom for 222Rn progeny including standard uncertainty
Table 3 \u2013 Potential alpha energy per atom for 220Rn progeny including standard uncertainty <\/td>\n<\/tr>\n
24<\/td>\n7.1.7 Potential alpha energy exposure (Pp)
7.1.8 The unattached and attached fraction of potential alpha energy concentration
7.2 Instruments measuring airborne radon activity concentration <\/td>\n<\/tr>\n
25<\/td>\n7.3 Measurement of radon decay products
7.3.1 General overview of instruments <\/td>\n<\/tr>\n
26<\/td>\n7.3.2 Sampling of the unattached radon decay products
Figure 7 \u2013 Contributions of the deposition processes to the total efficiency (calculated exemplarily for a wire screen)
Figure 8 \u2013 Variation of deposition efficiency of a wire screen in dependence on air flow velocity (calculated exemplarily for a wire screen) <\/td>\n<\/tr>\n
27<\/td>\n7.3.3 Counting methods for the measurement of the activity concentrations and the potential alpha-energy concentration <\/td>\n<\/tr>\n
28<\/td>\nTable 4 \u2013 Time scheme for the method of Thomas [57] <\/td>\n<\/tr>\n
29<\/td>\nFigure 9 \u2013 Measurement error of the method of MARKOV given in percent for different ratios of decay products in the air sampled
Table 5 \u2013 Time scheme for the method of MARKOV [63] <\/td>\n<\/tr>\n
30<\/td>\nFigure 10 \u2013 Method of multiple successive countings <\/td>\n<\/tr>\n
32<\/td>\n8 Quality assurance
8.1 Definition and purpose <\/td>\n<\/tr>\n
33<\/td>\n8.2 Quality control
8.3 Validation and traceability of measurements
8.3.1 Validation of methods
8.3.2 Type test of radon instruments
8.3.3 Interlaboratory comparison <\/td>\n<\/tr>\n
34<\/td>\n8.3.4 Measurement traceability and calibration
9 Determination of the measurement uncertainty, detection threshold, detection limit
9.1 General <\/td>\n<\/tr>\n
35<\/td>\n9.2 Procedure for the determination <\/td>\n<\/tr>\n
37<\/td>\nAnnex A (informative)Tables and figures
Figure A.1 \u2013 Sampling and measurement procedures commonly used for radon instruments
Figure A.2 \u2013 Sampling and measurement procedures commonly used for radon progeny instruments <\/td>\n<\/tr>\n
38<\/td>\nTable A.1 \u2013 Physical and chemical characteristics [29]
Table A.2 \u2013 226Ra, 222Rn and radionuclides of the 222Rn decay chain [37] <\/td>\n<\/tr>\n
39<\/td>\nTable A.3 \u2013 224Ra, 220Rn and radionuclides of the 220Rn decay chain [37]
Table A.4 \u2013 CSDA-Range of alpha particles emitted by Radon-222 and Radon-220 decay products in different materials [38] <\/td>\n<\/tr>\n
40<\/td>\nTable A.5 \u2013 Solubility of radon in organic components [31]
Table A.6 \u2013 Diffusion coefficients and diffusion lengths for radon in different materials [79] <\/td>\n<\/tr>\n
42<\/td>\nAnnex B (informative)Radioactive decay formulae
B.1 General
B.2 Symbols
B.3 Preliminary considerations and assumptions <\/td>\n<\/tr>\n
43<\/td>\nB.4 Build-up of filter activity during sampling <\/td>\n<\/tr>\n
45<\/td>\nB.5 Decay of the filter activity after cessation of sampling <\/td>\n<\/tr>\n
46<\/td>\nB.6 Number of alpha disintegrations registered after sampling
Figure B.1 \u2013 Scheme for sampling and counting <\/td>\n<\/tr>\n
48<\/td>\nAnnex C (informative)Uncertainty analysis for the method of multiple successive countings to determine the activity concentrations of radon and thoron decay products
C.1 Symbols
C.2 Uncertainties of the parameter of the model function <\/td>\n<\/tr>\n
52<\/td>\nC.3 Decision threshold <\/td>\n<\/tr>\n
53<\/td>\nC.4 Detection limit
C.5 Confidence limits <\/td>\n<\/tr>\n
54<\/td>\nC.6 Best estimate and its uncertainty <\/td>\n<\/tr>\n
55<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Radiation protection instrumentation. Radon and radon decay product measuring instruments – General properties of radon and radon decay products and their measurement methods<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2019<\/td>\n60<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":422168,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-422158","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/422158","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/422168"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=422158"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=422158"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=422158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}