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BS ISO 11929-4:2022 - TC Tracked Changes. Determination of the characteristic limits (decision threshold, detection limit and limits of the coverage interval) for measurements of ionizing radiation. Fundamentals and application - Guidelines to application, 2024
- A-30450800.pdf [Go to Page]
- undefined
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Quantities and symbols
- 5 Summary of this document [Go to Page]
- 5.1 Procedures according to ISO 11929 (all parts)
- 5.2 Survey on the examples
- 5.3 General stipulations
- 6 Counting measurements with small or moderate uncertainties [Go to Page]
- 6.1 Definition of the task and general aspects
- 6.2 Model of evaluation and standard uncertainty
- 6.3 Available information, input data, and specifications
- 6.4 Evaluation of the measurement and characteristic limits according to ISO 11929-1 [Go to Page]
- 6.4.1 Background effect
- 6.4.2 Primary result and its associated standard uncertainty
- 6.4.3 Standard uncertainty as a function of an assumed true value
- 6.4.4 Decision threshold
- 6.4.5 Detection limit
- 6.4.6 Limits of coverage intervals
- 6.4.7 The best estimate and its associated standard uncertainty
- 6.5 Documentation of the results obtained by ISO 11929-1 and ISO 11929-2
- 6.6 Assessment and explanations
- 7 Counting measurement with small count numbers [Go to Page]
- 7.1 Definition of the task and general aspects
- 7.2 Model of evaluation and standard uncertainty
- 7.3 Available information, input data, and specifications
- 7.4 Evaluation of the measurement and characteristic limits according to ISO 11929-1 [Go to Page]
- 7.4.1 Background effect
- 7.4.2 Primary result and its associated standard uncertainty
- 7.4.3 Standard uncertainty as a function of an assumed true value
- 7.4.4 Decision threshold
- 7.4.5 Detection limit
- 7.4.6 Limits of coverage intervals
- 7.4.7 The best estimate and its associated standard uncertainty
- 7.5 Documentation of the results obtained by ISO 11929-1 and ISO 11929-2
- 7.6 Assessment and explanations
- 7.7 An alternative example of a measurement with small count numbers [Go to Page]
- 7.7.1 General
- 7.7.2 Background effect
- 7.7.3 Primary result and its associated standard uncertainty
- 7.7.4 Standard uncertainty as a function of an assumed true value
- 7.7.5 Decision threshold
- 7.7.6 Detection limit
- 7.7.7 Limits of coverage intervals
- 7.7.8 The best estimate and its associated standard uncertainty
- 7.8 Documentation of the results obtained by ISO 11929-1 and ISO 11929-2
- 7.9 Assessment of the alternative example and explanations
- 8 Counting measurements with large uncertainties in the numerator of the calibration factor [Go to Page]
- 8.1 Definition of the task and general aspects
- 8.2 Model of evaluation and standard uncertainty
- 8.3 Available information, input data, and specifications
- 8.4 Evaluation of the measurement and characteristic limits according to ISO 11929-1 [Go to Page]
- 8.4.1 Background effect
- 8.4.2 Primary result and its associated standard uncertainty
- 8.4.3 Standard uncertainty as a function of an assumed true value
- 8.4.4 Decision threshold
- 8.4.5 Detection limit
- 8.4.6 Limits of coverage intervals
- 8.4.7 The best estimate and its associated standard uncertainty
- 8.5 Documentation of the results obtained by ISO 11929-1 and ISO 11929-2
- 8.6 Assessment and explanations
- 9 Counting measurements with large uncertainties in the denominator of the calibration factor [Go to Page]
- 9.1 Definition of the task and general aspects
- 9.2 Model of evaluation and standard uncertainty
- 9.3 Available information, input data, and specifications
- 9.4 Evaluation of the measurement and characteristic limits according to ISO 11929-1 [Go to Page]
- 9.4.1 Background effect
- 9.4.2 Primary result and its associated standard uncertainty
- 9.4.3 Standard uncertainty as a function of an assumed true value
- 9.4.4 Decision threshold
- 9.4.5 Detection limit
- 9.4.6 Limits of coverage intervals
- 9.4.7 The best estimate and its associated standard uncertainty
- 9.5 Documentation of the results obtained by ISO 11929-1 and ISO 11929-2
- 9.6 Assessment and explanations
- 10 Counting measurements with shielding of the background [Go to Page]
- 10.1 Definition of the task and general aspects
- 10.2 Model of evaluation and standard uncertainty
- 10.3 Available information, input data, and specifications
- 10.4 Evaluation of the measurement and characteristic limits according to ISO 11929-1 [Go to Page]
- 10.4.1 Background effect
- 10.4.2 Primary result and its associated standard uncertainty
- 10.4.3 Standard uncertainty as a function of an assumed true value
- 10.4.4 Decision threshold
- 10.4.5 Detection limit
- 10.4.6 Limits of coverage intervals
- 10.4.7 The best estimate and its associated standard uncertainty
- 10.5 Documentation of the results obtained by ISO 11929-1 and ISO 11929-2
- 10.6 Assessment and explanations
- 11 Counting clearance measurement [Go to Page]
- 11.1 Definition of the task and general aspects
- 11.2 Model of evaluation and standard uncertainty
- 11.3 Available information, input data, and specifications
- 11.4 Evaluation of the measurement and characteristic limits according to ISO 11929-1 [Go to Page]
- 11.4.1 Background effect
- 11.4.2 Primary result and its associated standard uncertainty
- 11.4.3 Standard uncertainty as a function of an assumed true value
- 11.4.4 Decision threshold
- 11.4.5 Detection limit
- 11.4.6 Limits of coverage intervals
- 11.4.7 The best estimate and its associated standard uncertainty
- 11.5 Documentation of the results obtained by ISO 11929-1 and ISO 11929-2
- 11.6 Assessment and explanations
- 12 Gamma-spectrometry of Uranium-235 with interference by Radium-226 [Go to Page]
- 12.1 Definition of the task and general aspects
- 12.2 Model of evaluation and standard uncertainty
- 12.3 Available information, input data, and specifications
- 12.4 Evaluation of the measurement and characteristic limits according to ISO 11929-1 [Go to Page]
- 12.4.1 Background effect
- 12.4.2 Primary result and its associated standard uncertainty
- 12.4.3 Standard uncertainty as a function of an assumed true value
- 12.4.4 Decision threshold
- 12.4.5 Detection limit
- 12.4.6 Limits of coverage intervals
- 12.4.7 The best estimate and its associated standard uncertainty
- 12.5 Documentation of the results obtained by ISO 11929-1 and ISO 11929-2
- 12.6 Assessment and explanations
- 13 Black box measurements [Go to Page]
- 13.1 Definition of the task and general aspects
- 13.2 Model of evaluation and standard uncertainty
- 13.3 Available information, input data, and specifications
- 13.4 Evaluation of the measurement and characteristic limits according to ISO 11929-1 [Go to Page]
- 13.4.1 Background effect
- 13.4.2 Primary result and its associated standard uncertainty
- 13.4.3 Standard uncertainty as a function of an assumed true value
- 13.4.4 Decision threshold
- 13.4.5 Detection limit
- 13.4.6 Limits of coverage intervals
- 13.4.7 The best estimate and its associated standard uncertainty
- 13.5 Documentation of the results obtained by ISO 11929-1 and ISO 11929-2
- 13.6 Assessment and explanations
- 14 Counting measurements with unknown random influence of sample treatment [Go to Page]
- 14.1 Definition of the task and general aspects
- 14.2 Model of evaluation and standard uncertainty
- 14.3 Available information, input data, and specifications
- 14.4 Evaluation of the measurement and characteristic limits according to ISO 11929-1 [Go to Page]
- 14.4.1 Background effect
- 14.4.2 Primary result and its associated standard uncertainty
- 14.4.3 Standard uncertainty as a function of an assumed true value
- 14.4.4 Decision threshold
- 14.4.5 Detection limit
- 14.4.6 Limits of coverage intervals
- 14.4.7 The best estimate and its associated standard uncertainty
- 14.5 Documentation of the results obtained by ISO 11929-1 and ISO 11929-2
- 14.6 Assessment and explanations
- 15 Counting measurement with known influence of sample treatment [Go to Page]
- 15.1 Definition of the task and general aspects
- 15.2 Model of evaluation and standard uncertainty
- 15.3 Available information, input data, and specifications
- 15.4 Evaluation of the measurement and characteristic limits according to ISO 11929-1 [Go to Page]
- 15.4.1 Determination of the relative uncertainty of the sample treatment
- 15.4.2 Background effect
- 15.4.3 Primary result and its associated standard uncertainty
- 15.4.4 Standard uncertainty as a function of an assumed true value
- 15.4.5 Decision threshold
- 15.4.6 Detection limit
- 15.4.7 Limits of coverage intervals
- 15.4.8 The best estimate and its associated standard uncertainty
- 15.5 Documentation of the results obtained by ISO 11929-1 and ISO 11929-2
- 15.6 Assessment and explanations
- 16 Dose measurement using an active personal dosemeter [Go to Page]
- 16.1 Definition of the task and general aspects
- 16.2 Model of evaluation and standard uncertainty
- 16.3 Available information, input data, and specifications
- 16.4 Evaluation of the measurement and characteristic limits according to ISO 11929-1 [Go to Page]
- 16.4.1 Background effect
- 16.4.2 Primary result and its associated standard uncertainty
- 16.4.3 Standard uncertainty as a function of an assumed true value
- 16.4.4 Decision threshold
- 16.4.5 Detection limit
- 16.4.6 Limits of coverage intervals
- 16.4.7 The best estimate and its associated standard uncertainty
- 16.5 Documentation of the results obtained by ISO 11929-1 and ISO 11929-2
- 16.6 Assessment and explanations
- 17 Dose rate measurement using a neutron area monitor [Go to Page]
- 17.1 Definition of the task and general aspects
- 17.2 Model of evaluation and standard uncertainty
- 17.3 Available information, input data, and specifications
- 17.4 Evaluation of the measurement and characteristic limits [Go to Page]
- 17.4.1 Background effect
- 17.4.2 Primary result and its associated standard uncertainty
- 17.4.3 Standard uncertainty as a function of an assumed true value
- 17.4.4 Decision threshold
- 17.4.5 Detection limit
- 17.4.6 Limits of coverage intervals
- 17.4.7 The best estimate and its associated standard uncertainty
- 17.5 Documentation of the results
- 17.6 Assessment and explanations
- Annex A (informative) Determination of a calibration factor
- Annex B (informative) Calculations according to ISO 11929-2
- Bibliography [Go to Page]