CCRI

Committee title

Consultative Committee for Ionizing Radiation (CCRI)

CGPM-2026 CCRI report

28th meeting of the CGPM

Report of the CCRI to the CGPM

Read the report of the Consultative Committee for Ionizing Radiation (CCRI) to the 28th meeting of the General Conference on Weights and Measures (CGPM).

Read the CCRI report →

President

Dr J.T. Janssen

Chief Scientist

National Physical Laboratory

United Kingdom

Executive Secretary

Dr V. Gressier

Director of the Ionizing Radiation Department

Bureau international des poids et mesures

France

ALL MEMBERS

List of meetings

Meetings and related documents

Upcoming Meeting

CCRI Workshop "50 Years of the SIR"
  • From 03 to 04
  • December
  • 2026

Upcoming Meeting

RMO SIRTI Working Group Workshop
  • 02
  • December
  • 2026

Upcoming Meeting

CCRI Workshop on Iodine Isotope Sample Preparation and Activity Comparisons
  • 02
  • December
  • 2026

Upcoming Meeting

CCRI-KCWG(II)
  • From 30 November
  • to 01 December
  • 2026

Past Meeting

CCRI(II)-MS-TG
  • 29
  • September
  • 2026

Past Meeting

CCRI-DT-WG
  • 28
  • September
  • 2026

Past Meeting

CCRI Webinar : "Quantum Technologies for Ionizing Radiation Metrology"
  • 23
  • September
  • 2026

Past Meeting

CCRI(III)
  • From 14 to 15
  • September
  • 2026
All meetings

Working Groups

CCRI-COMWG

CCRI Communication Working Group

CCRI-DT-WG

CCRI Working Group on Digital Transformation

CCRI-RMOWG

CCRI RMO Working Group on IR CMCs

CCRI-RTWG

CCRI Radionuclide Therapy and Quantitative Imaging Working Group

CCRI-SWG

CCRI ad hoc Working Group on Strategy

Publications

Publications

General documents

[CCRI] CCRI-D-01
CCRI CMC rules

Strategy documents

[CCRI] CCRI-S-01
CCRI Strategic Plan 2030+

Guidance documents on the CIPM MRA

[CCRI] CCRI-G-03
An Interpretation of CIPM MRA-G-11: Implications and Impacts for CCRI (2023)

[CCRI] CCRI-G-04
CMC review checklist (2023)

All publications

CCRI-mission

Mission

To discuss, foster, enable and co-ordinate the development, comparison and promulgation of national measurement standards for ionizing radiation. We aim to enable all users of ionizing radiation to make measurements with confidence at an accuracy that is fit for purpose.

Vision

A world in which the many benefits of ionizing radiation for healthcare and technology can be realized by accurate, scientifically rigorous measurement, confident that the associated risks are constrained.

Nested Applications

News and Updates

CCRI Workshop Explores the Past and Future of Ionizing Radiation Metrology

A CCRI workshop at the BIPM marked key anniversaries in ionizing radiation metrology while exploring future needs in medicine, environmental monitoring and emerging technologies

Bringing a Proven Technique into the Digital Era – BIPM and NIM Collaboration

A pioneering radioactivity measurement method has been brought firmly into the 21st century through a joint project between the BIPM and the National Institute of Metrology (NIM), China.

BIPM Extends Use of Off-Site Facility to Calibrate Secondary Standards for Radiation Protection Dosimetry

The BIPM is advancing dosimetry services for National Metrology Institutes (NMIs) by expanding its use of off-site facilities for calibration and comparison services.

Asset Publisher

Reports and announcements

Report of Session II of the 115th meeting of the CIPM (2026)

Annual Review Supplement - Activities of the BIPM Departments 2025

BIPM Annual Review 2025

Report of Session I of the 115th meeting of the CIPM (2026)

Report of the 114th meeting of the CIPM (2025)

CIPM Strategy 2030+

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