Internationally accepted framework for metrology
Andy Henson BIPM
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The BIPM – Bureau International des Poids et Measures
BIPM – Bureau International des Poids and Mesures
• representing the worldwide measurement community
• centre for scientific and technical collaboration
• coordinator of the worldwide measurement system
CIPM – Comité International des Poids et Mesures
Eighteen individuals of different nationalities elected by the CGPM.
Membership of the BIPM provides states with the opportunity • To gain global recognition and acceptance for measurement capabilities (CIPM MRA) • To participate in the structures that support and develop the SI • To be active in scientific and technical forums that support the development of measurement capability
Consultative Committees (CCs)
CCAUV – Acoustics, US & Vibration
CCEM – Electricity & Magnetism
CCL – Length
CCM – Mass and related
CCPR – Photometry & Radiometry
CCQM – Amount of substance
CCRI – Ionizing Radiation
CCT – Thermometry
CCTF – Time & Frequency
CCU - Units
CGPM – Conférence Générale des Poids et Mesures
Official representatives of Member States.
Established in 1875 when 17 States signed the Metre Convention. Currently there are 58 Member States of the BIPM, and 41 Associates of the General Conference.
– the intergovernmental organization through which Member States act together on matters related to measurement science and measurement standards.
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Global “Quality Infrastructure”
National Standards Body
National Metrology Institute
National Accreditation Body
BENEFITS
AUTHORITIES, CONSUMERS, AND GENERAL PUBLIC Source: World Bank
• Enhanced product quality and compatibility
• Enhanced safety and health
• Decreased environmental impact
• Increased trade opportunities
• Facilitating innovations to the market place
definition of units (as required in standards)
accreditation body standards
certification bodies
inspection bodies
testing laboratories
calibration laboratories
certification body
standards
inspection body
standards
testing laboratory standards
calibration laboratory standards
calibration certificate required for laboratory accreditation
ENTERPRISES
standards required for certification certification
inspection certificate test report
calibration certificate
• Metrology is a key part of the global “quality infrastructure” that underpins world trade.
• The work of the NMIs is made visible and transparent through the CIPM-MRA signed in 1999, which,
• provides the technical basis for the worldwide acceptance of national measurement standards and calibration and measurement certificates from NMIs.
• The work of the CIPM MRA now goes far beyond
matters of trade to cover climate change, healthcare etc.
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The CIPM Mutual Recognition Arrangement
Objectives:
• to establish the degree of equivalence of national measurement standards maintained by NMIs
• to provide for the mutual recognition of calibration and measurement certificates issued by NMIs
Participation
• 98 National Metrology Institutes ‒ 57 Member States ‒ 41 Associates
• 4 International organizations (ESA, IAEA, IRMM, WMO)
• plus 156 Designated Institutes
Total: 258 Institutes http://kcdb.bipm.org/
Science based, peer reviewed, public data
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Joint BIPM, OIML, ILAC and ISO declaration on measurement traceability
http://www.bipm.org/en/worldwide-metrology/bipm-oiml-ilac-iso_joint_declaration.html
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Joint BIPM, OIML, ILAC and ISO declaration on measurement traceability
The BIPM, OIML, ILAC, and ISO endorse the following recommendations:
in order to be able to rely on their international acceptability, calibrations should be performed
• in National Metrology Institutes who should normally be signatories to the CIPM MRA and have CMCs published in the relevant areas of the KCDB or
• in laboratories accredited by accreditation bodies which are signatories to the ILAC Arrangement;
measurement uncertainty should follow the principles established in the GUM;
the results of the measurements made in accredited laboratories should be traceable to the SI;
NMIs providing traceability for accredited laboratories should normally be signatories to the CIPM MRA and have CMCs published in the relevant areas of the KCDB;
within the OIML’s MAA, accreditation should be provided by bodies which are signatories to the ILAC Arrangement and the above policies on traceability to the SI should be followed;
The above principles should be used whenever there is a need to demonstrate metrological traceability for international acceptability.
(http://www.bipm.org/utils/common/pdf/BIPM-OIML-ILAC-ISO_joint_declaration_2011.pdf)
Use of this Declaration
These principles underpin a world measurement system which provides a robust, internationally accepted framework within which users can have confidence in the validity and acceptability of measurements results. BIPM, OIML, ILAC and ISO strongly urge legislators and regulators to refer to the Arrangements described earlier in this Declaration and also to accept measurement results made within this system, thereby helping avoid technical barriers to trade. We also invite interested parties to endorse these principles and to make use of them in their own work.
Option 1) from ILAC P10:01/2013 “An NMI whose service is suitable for the intended need and is covered by the CIPM MRA. Services covered by the CIPM MRA can be viewed in Appendix C of the BIPM KCDB which includes the range and uncertainty for each listed service.”
Traceability can be taken directly from the NMIs, but often is implicit by calling up accredited laboratory services
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CIPM MRA: Good regulatory practice
Federal Aviation Administration accepts CIPM MRA for aircraft repair and inspection procedures
Source: http://fsims.faa.gov/PICDetail.aspx?docId=8900.1,Vol.6,Ch9,Sec9_SAS
“The CIPM Mutual Recognition Arrangement (MRA) signatories are acceptable to the FAA …”
www.bipm.org
Effective regulation and regulatory compliance depends on getting the measurements right… …wherever they are made! Thank you
Andy Henson
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