BIPM.RI(I)-K4, SIM.RI(I)-K4, EUROMET.RI(I)-K4, EURAMET.RI(I)-K4.2, EURAMET.RI(I)-K4.1 and APMP.RI(I)-K4
MEASURAND Absorbed dose to water
Radiation quality Co-60 beam
Degrees of equivalence, Di and expanded uncertainty Ui (k = 2)
The SIM.RI(I)-K4 results data are no longer included for Degrees of Equivalence being older than 15 years.
BIPM.RI(I)-K4, SIM.RI(I)-K4, EUROMET.RI(I)-K4, EURAMET.RI(I)-K4.2, EURAMET.RI(I)-K4.1 and APMP.RI(I)-K4
MEASURAND Absorbed dose to water
Radiation quality Co-60 beam
Degrees of equivalence, Di and expanded uncertainty Ui (k = 2)
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
mGy/Gy |
mGy/Gy |
mGy/Gy |
||
| ENEA | -0.1 | 8.8 | ||
| VNIIFTRI | -1.4 | 8.6 | ||
| NMIJ | -3.0 | 9.2 | ||
| LNE-LNHB | -1.9 | 7.8 | ||
| METAS | 1.1 | 10 | ||
| PTB | -1.3 | 7.6 | ||
| NPL | 2.3 | 14 | ||
| VSL | -3.0 | 9.6 | ||
| BEV | -0.3 | 8.2 | ||
| GUM | 3.0 | 7.0 | ||
| ARPANSA | -0.5 | 10 | ||
| NRC | -0.5 | 6.8 | ||
| NIM | 2.7 | 7.2 | ||
| CMI | -4.0 | 24 | ||
| RMTC | -5.3 | 12 | ||
| SSM | -1.4 | 10 | ||
| STUK | -3.9 | 8.5 | ||
| NRPA | 3.2 | 8.8 | ||
| SMU | -4.7 | 25 | ||
| IAEA | -0.4 | 10 | ||
| HIRCL | 3.0 | 12 | ||
| ITN | -7.1 | 13 | ||
| NIST | -0.6 | 11 | ||
| LNMRI | 1.0 | 15 | ||
| CNEA | 12 | 18 | ||
| SCK-CEN | -1.5 | 16 | ||
| CIEMAT | 2.3 | 11 | ||
| VINS | 0.0 | 14 | ||
| Nuc. Malaysia | -1.7 | 14 | ||
| AECS-NRLM | 0.7 | 24 | ||
| KRISS | -3.3 | 8.0 | ||
| NMISA | -0.1 | 11 | ||
| BRMD, DMSc | 1.8 | 11 | ||
| BARC | 3.2 | 11 | ||
| PTKMR-BATAN | 2.3 | 19 | ||
| NRSL/INER | -1.9 | 8.2 | ||
| NIS | 0.3 | 14 |
The SIM.RI(I)-K4 results data are no longer included for Degrees of Equivalence being older than 15 years.
| Metrology area, Sub-field | Ionizing Radiation, Section I (x and gamma rays, electrons) |
| Description | Comparison of national absorbed dose to water standards |
| Time of measurements | 2009 - 2010 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| References | |
| Measurand | Absorbed dose to water in mGy/s |
| Parameters | Radiation type: Co-60 |
| Transfer device | Three ionization chambers as transfer standards and two link laboratories to the BIPM |
| Comparison type | Key Comparison |
| Consultative Committee | CCRI (Consultative Committee for Ionizing Radiation) |
| Conducted by | APMP (Asia Pacific Metrology Programme) |
| 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 |
| AECS-NRML |
Atomic Energy Commission of Syria, Syrian Arab Republic, APMP |
| ARPANSA |
Australian Radiation Protection and Nuclear Safety Agency, Australia, APMP |
| BARC |
Bhabha Atomic Research Centre, India, APMP |
| DMSc |
Department of Medical Sciences, Thailand, APMP |
| KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
| 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 |
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| 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).
Please, select items to be printed out, then click on "OK" :
BIPM.RI(I)-K4, SIM.RI(I)-K4, EUROMET.RI(I)-K4, EURAMET.RI(I)-K4.2, EURAMET.RI(I)-K4.1 and APMP.RI(I)-K4
MEASURAND Absorbed dose to water
Radiation quality Co-60 beam
The key comparison reference value is the BIPM evaluation of absrobed dose to water.
BIPM.RI(I)-K4
The degree of equivalence of each laboratory i with respect to the key comparison reference value is given by a pair of terms both expressed in mGy/Gy:
the relative difference Di and Ui, its expanded uncertainty (k = 2), with Ui = 2ui.
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms both expressed in mGy/Gy:
Dij = Di - Dj and Uij , its expanded uncertainty (k = 2). The approximation for Uij is explained in section 5 of the Final Report.
Linking SIM.RI(I)-K4 to BIPM.RI(I)-K4
The relative value xi is the comparison result for laboratory i participant in SIM.RI(I)-K4 and was normalized to the value of NRC acting as the linking laboratory (see SIM.RI(I)-K4 Final Report).
The degree of equivalence of each laboratory i participant in SIM.RI(I)-K4 with respect to the key comparison reference value is given by a pair of terms both expressed in mGy/Gy: Di = (xi - 1) x 1000 and Ui, its expanded uncertainty (k = 2).
Linking EUROMET.RI(I)-K4 to BIPM.RI(I)-K4
The relative value xi is the comparison result for laboratory i participant in EUROMET.RI(I)-K4 and is linked to the BIPM.RI(I)-K4 via the nine linking laboratories ARPANSA, BEV, ENEA-INMRI, LNE-LNHB, METAS, MKEH, NRC, PTB and VSL (see EUROMET.RI(I)-K4 Final Report).
The degree of equivalence of each laboratory i participant in EUROMET.RI(I)-K4 with respect to the key comparison reference value is given by a pair of terms both expressed in mGy/Gy: Di = (xi - 1) x 1000 and Ui, its expanded uncertainty (k = 2).
Linking EURAMET.RI(I)-K4.1 to BIPM.RI(I)-K4
The linking of EURAMET.RI(I)-K4.1 to BIPM.RI(I)-K4 was made via BEV, LNE-LNHB and METAS, having participated in both comparisons.
The degree of equivalence of each laboratory i participant in EURAMET.RI(I)-K4.1 with respect to the key comparison reference value is given by a pair of terms both expressed in mGy/Gy: Di = (xi - 1) x 1000 and Ui, its expanded uncertainty (k = 2).
Linking EURAMET.RI(I)-K4.2 to BIPM.RI(I)-K4
The linking of EURAMET.RI(I)-K4.2 to BIPM.RI(I)-K4 was made via BEV having participated in both comparisons.
The degree of equivalence of each laboratory i participant in EURAMET.RI(I)-K4.2 with respect to the key comparison reference value is given by a pair of terms both expressed in mGy/Gy: Di = (xi - 1) x 1000 and Ui, its expanded uncertainty (k = 2).
Linking APMP.RI(I)-K4 to BIPM.RI(I)-K4
The linking of APMP.RI(I)-K4 to BIPM.RI(I)-K4 was made via ARPANSA, NMIJ-AIST and PTB having participated in both comparisons.
The degree of equivalence of each laboratory i participant in APMP.RI(I)-K4 with respect to the key comparison reference value is given by a pair of terms both expressed in mGy/Gy: Di = (xi - 1) x 1000 and Ui, its expanded uncertainty (k = 2).
Following decision of the CCRI in 2011, the pair-wise degrees of equivalence are not explicitely published in the KCDB.
BIPM.RI(I)-K4, SIM.RI(I)-K4, EUROMET.RI(I)-K4, EURAMET.RI(I)-K4.2, EURAMET.RI(I)-K4.1 and APMP.RI(I)-K4
MEASURAND Absorbed dose to water
Radiation quality Co-60 beam
BIPM.RI(I)-K4 - Laboratory measurements
xi : ratio of the measurement made at the BIPM by laboratory i to that of the BIPM
ui : combined standard uncertainty of the ratio xi
-K4 LIM 2022-06-23.jpg)
SIM.RI(I)-K4 - Laboratory measurements
xi : result of measurement carried out at laboratory i converted to absorbed dose through the NRC measurements at the BIPM (See SIM.RI(I)-K4 Final Report)
ui : combined standard uncertainty of xi
-K4_LIM.PNG)
EUROMET.RI(I)-K4 - Laboratory measurements
xi : result of measurement carried out at laboratory i converted to absorbed dose through nine NMI measurements at the BIPM (See EUROMET.RI(I)-K4 Final Report)
The linking laboratories are MKEH, LNE-LNHB, PTB, ENEA, ARPANSA, NRC, BEV, METAS and VSL.
ui : combined standard uncertainty of xi
-K4_LIM.PNG)
EURAMET.RI(I)-K4.2 - Laboratory measurements
xi : result of measurement carried out at laboratory i linked via BEV, LNE-LNHB and METAS.
ui : combined standard uncertainty of xi
-K4.2_LIM.PNG)
EURAMET.RI(I)-K4.1 - Laboratory measurements
xi : result of measurement carried out at laboratory i linked via BEV.
ui : combined standard uncertainty of xi
-K4.1_LIM.png)
APMP.RI(I)-K4 - Laboratory measurements
xi : result of measurement carried out at laboratory i linked via ARPANSA, NMIJ-AIST and PTB.
ui : combined standard uncertainty of xi
-K4 LIM 2022-03-08.jpg)
