BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 100 kV
Degrees of equivalence represented by the relative difference Di = xi - 1 and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
Results older than 15 years are no longer included in the degrees of equivalence.
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 135 kV
Degrees of equivalence represented by the relative difference Di = xi - 1 and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
Results older than 15 years are no longer included in the degrees of equivalence.
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 180 kV
Degrees of equivalence represented by the relative difference Di = xi - 1 and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
Results older than 15 years are no longer included in the degrees of equivalence.
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 250 kV
Degrees of equivalence represented by the relative difference Di = xi - 1 and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
Results older than 15 years are no longer included in the degrees of equivalence.
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 100 kV
Degrees of equivalence represented by the relative difference Di = xi - 1 and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
mGy/Gy |
mGy/Gy |
mGy/Gy |
||
| ENEA | 3.9 | 6.2 | ||
| BEV | 3.2 | 6.4 | ||
| NRC | 3.1 | 6.6 | ||
| NMIJ | -0.8 | 6.2 | ||
| VSL | -1.0 | 6.4 | ||
| NIST | -2.2 | 7.8 | ||
| NIM | 7.2 | 6.2 | ||
| NPL | 0.4 | 6.8 | ||
| KRISS | 4.1 | 4.4 | ||
| LNE-LNHB | 0.5 | 7.6 | ||
| VNIIM | 0.5 | 3.8 | ||
| GUM | 6.9 | 6.0 | ||
| ARPANSA | 3.8 | 8.2 | ||
| BFKH | -5.4 | 6.2 | ||
| PTB | 5.2 | 5.8 | ||
| CNEA | -6.0 | 14 | ||
| LMNRI/IRD | -9.5 | 12 | ||
| ININ | -9.3 | 16 | ||
| BARC | 11.4 | 14.1 | ||
| PTKMR-BATAN | 0.9 | 13.1 | ||
| INER | 2.1 | 10.1 | ||
| LNMRI/IRD | 1.4 | 9.8 | ||
| NMISA | -2.2 | 9.1 | ||
| NIS | 4.6 | 15.9 | ||
| Nuclear Malaysia | -1.9 | 12.1 |
Results older than 15 years are no longer included in the degrees of equivalence.
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 135 kV
Degrees of equivalence represented by the relative difference Di = xi - 1 and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
mGy/Gy |
mGy/Gy |
mGy/Gy |
||
| ENEA | 4.2 | 6.2 | ||
| BEV | 4.7 | 6.4 | ||
| NRC | 2.3 | 6.6 | ||
| NMIJ | -1.4 | 6.2 | ||
| VSL | -0.4 | 6.4 | ||
| NIST | -3.3 | 7.8 | ||
| NIM | 5.4 | 6.2 | ||
| NPL | 0.0 | 6.8 | ||
| KRISS | 5.1 | 4.4 | ||
| LNE-LNHB | -0.5 | 7.6 | ||
| VNIIM | 1.0 | 3.8 | ||
| GUM | 3.2 | 6.0 | ||
| ARPANSA | 5.2 | 8.2 | ||
| BFKH | -0.7 | 6.2 | ||
| PTB | 5.4 | 5.8 | ||
| CNEA | 1.1 | 14 | ||
| LMNRI/IRD | -9.4 | 12 | ||
| ININ | -12.1 | 16 | ||
| BARC | 10.0 | 15.7 | ||
| PTKMR-BATAN | 3.2 | 12.7 | ||
| INER | 4.0 | 10.0 | ||
| LNMRI/IRD | 1.0 | 9.4 | ||
| NMISA | 0.3 | 8.0 | ||
| NIS | 5.7 | 15.8 | ||
| Nuclear Malaysia | 2.2 | 10.2 |
Results older than 15 years are no longer included in the degrees of equivalence.
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 180 kV
Degrees of equivalence represented by the relative difference Di = xi - 1 and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
mGy/Gy |
mGy/Gy |
mGy/Gy |
||
| ENEA | 7.3 | 6.2 | ||
| BEV | 4.1 | 6.4 | ||
| NRC | 1.3 | 6.6 | ||
| NMIJ | -2.4 | 6.2 | ||
| VSL | 0.0 | 6.4 | ||
| NIST | -2.7 | 7.8 | ||
| NIM | 6.1 | 6.2 | ||
| NPL | -2.5 | 6.8 | ||
| KRISS | 4.3 | 4.4 | ||
| LNE-LNHB | -1.0 | 7.6 | ||
| VNIIM | 1.7 | 3.8 | ||
| GUM | 3.6 | 6.0 | ||
| ARPANSA | 5.4 | 8.2 | ||
| BFKH | -0.7 | 6.2 | ||
| PTB | 5.4 | 5.8 | ||
| CNEA | 2.1 | 14 | ||
| LMNRI/IRD | -8.0 | 12 | ||
| ININ | -11.1 | 16 | ||
| BARC | 7.9 | 14.5 | ||
| PTKMR-BATAN | -1.9 | 12.7 | ||
| INER | 2.6 | 9.7 | ||
| LNMRI/IRD | -0.1 | 9.3 | ||
| NMISA | -0.2 | 7.9 | ||
| NIS | 2.0 | 15.8 | ||
| Nuclear Malaysia | -0.9 | 9.2 |
Results older than 15 years are no longer included in the degrees of equivalence.
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 250 kV
Degrees of equivalence represented by the relative difference Di = xi - 1 and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
mGy/Gy |
mGy/Gy |
mGy/Gy |
||
| ENEA | 5.6 | 6.2 | ||
| BEV | 1.1 | 6.4 | ||
| NRC | 0.4 | 6.6 | ||
| NMIJ | -3.7 | 6.2 | ||
| VSL | -2.1 | 6.4 | ||
| NIST | -5.8 | 7.8 | ||
| NIM | 6.0 | 6.2 | ||
| NPL | -4.4 | 6.8 | ||
| KRISS | 2.8 | 4.4 | ||
| LNE-LNHB | -2.8 | 7.6 | ||
| VNIIM | 2.2 | 3.8 | ||
| GUM | 2.7 | 6.0 | ||
| ARPANSA | 4.5 | 8.2 | ||
| BFKH | -0.7 | 6.2 | ||
| PTB | 3.8 | 5.8 | ||
| CNEA | 1.4 | 14 | ||
| LMNRI/IRD | -8.5 | 12 | ||
| ININ | -12.0 | 16 | ||
| PTKMR-BATAN | 2.4 | 13.0 | ||
| INER | 2.2 | 9.9 | ||
| LNMRI/IRD | -0.2 | 9.3 | ||
| NMISA | -1.1 | 8.1 | ||
| Nuclear Malaysia | -6.8 | 9.1 |
Results older than 15 years are no longer included in the degrees of equivalence.
| Metrology area, Sub-field | Ionizing Radiation, Section I (x and gamma rays, electrons) |
| Description | Measurement of air kerma for medium energy X-rays |
| Time of measurements | 2015 - 2016 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| References | |
| Measurand | Air kerma |
| Parameters | Radiation type: medium energy X-rays |
| Transfer device | Cavity ionization chambers |
| Comparison type | Key Comparison |
| Consultative Committee | CCRI (Consultative Committee for Ionizing Radiation) |
| Conducted by | APMP (Asia Pacific Metrology Programme) |
| Comments | Results published in 10 February 2023. |
| Pilot institute |
NRSL/INER
Institute of Nuclear Energy Research Chinese Taipei |
| Contact person | Chien-Hau Chu +886 3 471 1400 ext 7741 |
| Pilot laboratory | |
|---|---|
| NRSL/INER |
Institute of Nuclear Energy Research, Chinese Taipei, APMP |
| ARPANSA |
Australian Radiation Protection and Nuclear Safety Agency, Australia, APMP |
| BARC |
Bhabha Atomic Research Centre, India, APMP |
| KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
| LNMRI/IRD |
Laboratorio Nacional de Metrologia das Radiacoes Ionizantes, IRD, Brazil, SIM |
| NIM |
National Institute of Metrology, China, APMP |
| NIS |
National Institute for Standards, Egypt, AFRIMETS |
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| Nuclear Malaysia |
Malaysian Nuclear Agency, Malaysia, APMP |
| PTKMR-BATAN |
Center for Technology of Radiation Safety and Metrology, National Nuclear Energy Agency, Indonesia, APMP |
This page proposes print-out on A4 paper (portrait) of the comparison details (best printed out using a black and white printer).
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BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 100 kV
BIPM.RI(I)-K3
For a comparison with laboratory i , the key comparison reference value is the BIPM air kerma determination xR,i and its standard uncertainty uR,i .
The degree of equivalence of each laboratory i with respect to the key comparison reference value xR,i is given by a pair of terms:
Di and Ui = 2ui , its expanded uncertainty (k = 2), both expressed in mGy/Gy:
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms:
Dij = Di - Dj and Uij = 2uij , its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating uij , account should be taken of correlation between uij and uj (see the BIPM.RI(I)-K3 Summary Report Metrologia 2003 40 06036). For regional comparisons involving secondary standards, this includes correlation related to traceability (see the and SIM.RI(I)-K3 Final report and APMP.RI(I)-K3.2013 Final report).
Linking SIM.RI(I)-K3 to BIPM.RI(I)-K3
The results of SIM.RI(I)-K3 were linked to those of BIPM.RI(I)-K3 via NIST (United States) who participated in both comparisons.
Linking APMP.RI(I)-K3.2013 to BIPM.RI(I)-K3
The results of APMP.RI(I)-K3.2013 were linked to those of BIPM.RI(I)-K3 via NMIJ (Japan) and ARPANSA (Australia) who participated in both comparisons.
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 135 kV
BIPM.RI(I)-K3
For a comparison with laboratory i , the key comparison reference value is the BIPM air kerma determination xR,i and its standard uncertainty uR,i .
The degree of equivalence of each laboratory i with respect to the key comparison reference value xR,i is given by a pair of terms:
Di and Ui = 2ui , its expanded uncertainty (k = 2), both expressed in mGy/Gy:
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms:
Dij = Di - Dj and Uij = 2uij , its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating uij , account should be taken of correlation between uij and uj (see the BIPM.RI(I)-K3 Summary Report Metrologia 2003 40 06036). For regional comparisons involving secondary standards, this includes correlation related to traceability (see the and SIM.RI(I)-K3 Final report and APMP.RI(I)-K3.2013 Final report).
Linking SIM.RI(I)-K3 to BIPM.RI(I)-K3
The results of SIM.RI(I)-K3 were linked to those of BIPM.RI(I)-K3 via NIST (United States) who participated in both comparisons.
Linking APMP.RI(I)-K3.2013 to BIPM.RI(I)-K3
The results of APMP.RI(I)-K3.2013 were linked to those of BIPM.RI(I)-K3 via NMIJ (Japan) and ARPANSA (Australia) who participated in both comparisons.
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 180 kV
BIPM.RI(I)-K3
For a comparison with laboratory i , the key comparison reference value is the BIPM air kerma determination xR,i and its standard uncertainty uR,i .
The degree of equivalence of each laboratory i with respect to the key comparison reference value xR,i is given by a pair of terms:
Di and Ui = 2ui , its expanded uncertainty (k = 2), both expressed in mGy/Gy:
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms:
Dij = Di - Dj and Uij = 2uij , its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating uij , account should be taken of correlation between uij and uj (see the BIPM.RI(I)-K3 Summary Report Metrologia 2003 40 06036). For regional comparisons involving secondary standards, this includes correlation related to traceability (see the and SIM.RI(I)-K3 Final report and APMP.RI(I)-K3.2013 Final report).
Linking SIM.RI(I)-K3 to BIPM.RI(I)-K3
The results of SIM.RI(I)-K3 were linked to those of BIPM.RI(I)-K3 via NIST (United States) who participated in both comparisons.
Linking APMP.RI(I)-K3.2013 to BIPM.RI(I)-K3
The results of APMP.RI(I)-K3.2013 were linked to those of BIPM.RI(I)-K3 via NMIJ (Japan) and ARPANSA (Australia) who participated in both comparisons.
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 250 kV
BIPM.RI(I)-K3
For a comparison with laboratory i , the key comparison reference value is the BIPM air kerma determination xR,i and its standard uncertainty uR,i .
The degree of equivalence of each laboratory i with respect to the key comparison reference value xR,i is given by a pair of terms:
Di and Ui = 2ui , its expanded uncertainty (k = 2), both expressed in mGy/Gy:
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms:
Dij = Di - Dj and Uij = 2uij , its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating uij , account should be taken of correlation between uij and uj (see the BIPM.RI(I)-K3 Summary Report Metrologia 2003 40 06036). For regional comparisons involving secondary standards, this includes correlation related to traceability (see the and SIM.RI(I)-K3 Final report and APMP.RI(I)-K3.2013 Final report).
Linking SIM.RI(I)-K3 to BIPM.RI(I)-K3
The results of SIM.RI(I)-K3 were linked to those of BIPM.RI(I)-K3 via NIST (United States) who participated in both comparisons.
Linking APMP.RI(I)-K3.2013 to BIPM.RI(I)-K3
The results of APMP.RI(I)-K3.2013 were linked to those of BIPM.RI(I)-K3 via NMIJ (Japan) and ARPANSA (Australia) who participated in both comparisons.
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 100 kV
BIPM.RI(I)-K3
xi air kerma determined by Labi at the BIPM, relative to the reference value determined by the BIPM standard
ui combined standard uncertainty of xi taking correlation into account
| Labi | xi | ui | Year of | ||
| mGy/Gy | mGy/Gy | measurement | |||
| ENEA | 1.0039 | 0.0031 | 2014 | ||
| BEV | 1.0032 | 0.0032 | 2014 | ||
| NRC | 1.0031 | 0.0033 | 2014 | ||
| NMIJ | 0.9992 | 0.0031 | 2015 | ||
| VSL | 0.9990 | 0.0032 | 2016 | ||
| NIST | 0.9978 | 0.0039 | 2016 | ||
| NIM | 1.0072 | 0.0031 | 2017 | ||
| NPL | 1.0004 | 0.0034 | 2017 | ||
| KRISS | 1.0041 | 0.0022 | 2017 | ||
| LNE-LNHB | 1.0005 | 0.0038 | 2018 | ||
| VNIIM | 1.0005 | 0.0019 | 2020 | ||
| GUM | 1.0069 | 0.0030 | 2020 | ||
| ARPANSA | 1.0038 | 0.0041 | 2020 | ||
| BFKH | 0.9946 | 0.0031 | 2021 | ||
| PTB | 1.0052 | 0.0029 | 2024 |
SIM.RI(I)-K3
| Labi | xi | ui | Year of | |
| mGy/Gy | mGy/Gy | measurement | ||
| CNEA | 0.9940 | 0.0072 | 2008 | |
| LMNRI/IRD | 0.9905 | 0.0061 | 2008 | |
| ININ | 0.9907 | 0.0081 | 2008 |
APMP.RI(I)-K3.2013
APMP.RI(I)-K3.2013 comparison results for each laboratory are listed in Section 4 and appendix B of the APMP.RI(I)-K3 Final report.
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 135 kV
BIPM.RI(I)-K3
xi air kerma determined by Labi at the BIPM, relative to the reference value determined by the BIPM standard
ui combined standard uncertainty of xi taking correlation into account
| Labi | xi | ui | Year of | ||
| mGy/Gy | mGy/Gy | measurement | |||
| ENEA | 1.0042 | 0.0031 | 2014 | ||
| BEV | 1.0047 | 0.0032 | 2014 | ||
| NRC | 1.0023 | 0.0033 | 2014 | ||
| NMIJ | 0.9986 | 0.0031 | 2015 | ||
| VSL | 0.9996 | 0.0032 | 2016 | ||
| NIST | 0.9967 | 0.0039 | 2016 | ||
| NIM | 1.0054 | 0.0031 | 2017 | ||
| NPL | 1.0000 | 0.0034 | 2017 | ||
| KRISS | 1.0051 | 0.0022 | 2017 | ||
| LNE-LNHB | 0.9995 | 0.0038 | 2018 | ||
| VNIIM | 1.0010 | 0.0019 | 2020 | ||
| GUM | 1.0032 | 0.0030 | 2020 | ||
| ARPANSA | 1.0052 | 0.0041 | 2020 | ||
| BFKH | 0.9993 | 0.0031 | 2021 | ||
| PTB | 1.0054 | 0.0029 | 2024 |
SIM.RI(I)-K3
| Labi | xi | ui | Year of | ||
| mGy/Gy | mGy/Gy | measurement | |||
| CNEA | 1.0011 | 0.0072 | 2008 | ||
| LMNRI/IRD | 0.9906 | 0.0061 | 2008 | ||
| ININ | 0.9879 | 0.0081 | 2008 |
APMP.RI(I)-K3.2013
APMP.RI(I)-K3.2013 comparison results for each laboratory are listed in Section 4 and appendix B of the APMP.RI(I)-K3 Final report.
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 180 kV
BIPM.RI(I)-K3
xi air kerma determined by Labi at the BIPM, relative to the reference value determined by the BIPM standard
ui combined standard uncertainty of xi taking correlation into account
| Labi | xi | ui | Year of | ||
| mGy/Gy | mGy/Gy | measurement | |||
| ENEA | 1.0073 | 0.0031 | 2014 | ||
| BEV | 1.0041 | 0.0032 | 2014 | ||
| NRC | 1.0013 | 0.0033 | 2014 | ||
| NMIJ | 0.9976 | 0.0031 | 2015 | ||
| VSL | 1.0000 | 0.0032 | 2016 | ||
| NIST | 0.9973 | 0.0039 | 2016 | ||
| NIM | 1.0061 | 0.0031 | 2017 | ||
| NPL | 0.9975 | 0.0034 | 2017 | ||
| KRISS | 1.0043 | 0.0022 | 2017 | ||
| LNE-LNHB | 0.9990 | 0.0038 | 2018 | ||
| VNIIM | 1.0017 | 0.0019 | 2020 | ||
| GUM | 1.0036 | 0.0030 | 2020 | ||
| ARPANSA | 1.0054 | 0.0041 | 2020 | ||
| BFKH | 0.9993 | 0.0031 | 2021 | ||
| PTB | 1.0054 | 0.0029 | 2024 |
SIM.RI(I)-K3
| Labi | xi | ui | Year of | ||
| mGy/Gy | mGy/Gy | measurement | |||
| CNEA | 1.0021 | 0.0072 | 2008 | ||
| LMNRI/IRD | 0.9920 | 0.0061 | 2008 | ||
| ININ | 0.9889 | 0.0081 | 2008 |
APMP.RI(I)-K3.2013
APMP.RI(I)-K3.2013 comparison results for each laboratory are listed in Section 4 and appendix B of the APMP.RI(I)-K3 Final report
BIPM.RI(I)-K3, SIM.RI(I)-K3 and APMP.RI(I)-K3.2013
MEASURAND Air kerma
Radiation quality 250 kV
BIPM.RI(I)-K3
xi air kerma determined by Labi at the BIPM, relative to the reference value determined by the BIPM standard
ui combined standard uncertainty of xi taking correlation into account
| Labi | xi | ui | Year of | ||
| mGy/Gy | mGy/Gy | measurement | |||
| ENEA | 1.0056 | 0.0031 | 2014 | ||
| BEV | 1.0011 | 0.0032 | 2014 | ||
| NRC | 1.0004 | 0.0033 | 2014 | ||
| NMIJ | 0.9963 | 0.0031 | 2015 | ||
| VSL | 0.9979 | 0.0032 | 2016 | ||
| NIST | 0.9942 | 0.0039 | 2016 | ||
| NIM | 1.0060 | 0.0031 | 2017 | ||
| NPL | 0.9956 | 0.0034 | 2017 | ||
| KRISS | 1.0028 | 0.0022 | 2017 | ||
| LNE-LNHB | 0.9972 | 0.0038 | 2018 | ||
| VNIIM | 1.0022 | 0.0019 | 2020 | ||
| GUM | 1.0027 | 0.0030 | 2020 | ||
| ARPANSA | 1.0045 | 0.0041 | 2020 | ||
| BFKH | 0.9993 | 0.0031 | 2021 | ||
| PTB | 1.0038 | 0.0029 | 2024 |
SIM.RI(I)-K3
| Labi | xi | ui | Year of | ||
| mGy/Gy | mGy/Gy | measurement | |||
| CNEA | 1.0014 | 0.0072 | 2008 | ||
| LMNRI/IRD | 0.9915 | 0.0061 | 2008 | ||
| ININ | 0.9880 | 0.0081 | 2008 |
APMP.RI(I)-K3.2013
APMP.RI(I)-K3.2013 comparison results for each laboratory are listed in Section 4 and appendix B of the APMP.RI(I)-K3 Final report.
