The work of the Consultative Committees to increase the impact of - PowerPoint PPT Presentation

The work of the Consultative Committees to increase the impact of the CIPM MRA Dr.ir. Gerrit Rietveld CIPM member CCEM president

A visionary statement… www.bipm.org 2

The CIPM MRA International equivalence of measurements: “The CIPM Mutual Recognition Arrangement (CIPM MRA) is the framework through which National Metrology Institutes demonstrate the international equivalence of their measurement standards and the calibration and measurement certificates they issue . The outcomes of the Arrangement are the internationally recognized (peer- reviewed and approved) Calibration and Measurement Capabilities (CMCs) of the participating institutes. Approved CMCs and supporting technical data are publicly available from the CIPM MRA database (the KCDB).” www.bipm.org 3

25 th CGPM and the CIPM MRA CIPM MRA working group August 2016 report : 9 recommendations 28 actions https://www.bipm.org/en/ cipm-mra-review/ www.bipm.org 4

The CIPM MRA – Key Comparison DataBase https://kcdb.bipm.org/ 17 of the 28 actions are on: CMC visibility in the KCDB (3) KC participation (3) Constraining proliferation of CMCs (5) CMC review process (6) 11 actions relate to the CIPM CCs www.bipm.org 5

CMC proliferation - matrices DCC bridge CCC Potentiometer Potentiometer Modified CCEM: Ratio comparison bridge system bridge Wheatstone Teraohmmeter with standard -40 % bridge 1 µ W 40 - - - - - - 2013: 7100 CMCs 10 µ W 4 - - - - - - 100 µ W 1.5 - - - - - - 1 m W 1 - - - - - - 2018: 4400 CMCs 10 m W 0.4 - - - - - - 100 m W 0.2 - - - - - - 1 W 0.15 0.05 - - - - 70 The same information, 10 W 0.13 0.03 - - - - 20 25 W 0.13 0.03 - - - - - 100 W 0.11 0.02 - - - - 15 better presented, 1 k W 0.09 0.02 - - - - 10 6.45 k W - 0.02 0.03 - - - - 10 k W 0.12 0.02 0.03 0.2 - - 10 less administration 12.9 k W - 0.02 0.03 0.2 - - - 100 k W - - - 0.4 - - 10 1 M W - - - 1 - - 15 10 M W - - - 2 2 - 60 100 M W - - - 7 3 100 600 1 G W - - - 20 5 100 - Reduction of the 10 G W - - - - 40 200 - 100 G W - - - - 100 500 - number of CMCs is not 1 T W - - - - - 1000 - 10 T W - - - - - 2000 - 100 T W - - - - - 5000 - an aim in itself! 1 P W - - - - - 1E+04 - 10 P W - - - - - 1E+05 - www.bipm.org 6

CMC review processes One review for all CMCs during a meeting at the BIPM Works well for TCs with: Not too many CMCs New areas (CCQM) www.bipm.org 7

CMC review processes CCEM: All CMCs are reviewed within the region (intra-RMO review) As the MRA matures and trust between RMOs and NMIs increases, the inter- RMO reviews can be optimised www.bipm.org 8

CCEM inter-RMO CMC review process Prior to CCEM 2011: 400 % review (4 RMOs each reviewing entire set) Since CCEM 2011: 100 % review (2-4 RMOs collectively reviewing set) After CCEM 2015: selective review (<100 %, based on sampling) Upon submission of a CMC set, a proposal for the scope of inter-RMO review is made by the Chair of WGRMO or designate, based on agreed criteria such as: – Magnitude of change – History of previous reviews The final decision – Coverage by on-site technical reviews on the scope of review – Rotation lies with RMOs! – High-level technical judgement www.bipm.org 9

KCDB 2.0 – a step change in MRA impact Manual transfer of Manual treatment of JCRB Excel for review Excel and publication KCDB Today web Create Review Publication CMC Tomorrow No manual transfer No manual transfer of of data for review data for publication KCDB Web platform ensures Link Link correct formatting CMC CMC CMC WEBPLATFORM Writer Reviewer Finder RMO1 RMO1 TC Chair Web-platform allows RMOs JCRB selects Intra-RMO review RMO1 to view and download data « GO » www.bipm.org 10

Comparisons Less NMIs in loop: o CMC o RMO coverage o RMO follow-up loop Parallel loops Only key quantities Strategic planning Training (CBKT!) www.bipm.org 11

The BIPM and CCEM comparisons Quantum standards (still) require comparisons BIPM travelling standards for JAVS (DC and AC) & QHE very effective for performing KCs Learning experience for all participants, including ‘leading’ NMIs Recent BIPM- led ‘star approach’ comparison finished < 2 yrs (record!) www.bipm.org 12

Summary The CIPM MRA is a great success in reducing or eliminating trade barriers A significant increase of the CIPM MRA efficiency and impact achieved via: Reduction of the number of CMCs (matrices) More efficient CMC review process Strategic planning of KCs KCDB2.0 ! BIPM-led comparisons The efficiency CIPM MRA is discussed at the yearly CC presidents meetings; experiences are exchanged, and progress of all CCs on the actions is tracked www.bipm.org 13

Thank you! Gert.Rietveld@vsl.nl www.bipm.org