P.J. Allisy-Roberts is the Chairman of a joint Working Group for the UK National Measurement System programme for ionizing radiation and acoustics and the Chairman of the UK Ionising Radiation Health and Safety Forum. She is the BIPM representative on the IAEA SSDL Scientific Committee, a member of the Comité scientifique rayonnements ionisants (LNE, France), on the editorial board of the Journal of Radiological Protection and the Comité editorial of the Revue Française de Métrologie, and a referee for Physics in Medicine and Biology, Medical Physics and the British Journal of Radiology.

D.T. Burns is the BIPM representative at the ICRU, a member of the ICRU Committee on Fundamental Quantities and Units (currently preparing a revision of ICRU Report 60) and a member of the ICRU Report Committee on Key Data for Dosimetry. He is the BIPM contact person at the EURAMET for ionizing radiation and radioactivity and a consultant to the IAEA. He is a referee for Physics in Medicine and Biology and for Medical Physics.

G. Ratel is the BIPM representative at the International Committee for Radionuclide Metrology (ICRM) of which he is joint Vice-President. He is a jury member for an NMI colleague to obtain the “habilitation à diriger des recherches” at the University of Orsay (France). He is also a referee for Metrologia, Applied Radiation and Isotopes and Nuclear Instruments and Methods.

P.J. Allisy-Roberts is Executive Secretary of the CCRI and its three Sections. She is also Executive Secretary of the CCAUV. She participated in the CCRI RMO WG, which met in November 2007. This last year has also seen the publication of a new Monographie 7 in support of the CCRI(II).

P.J. Allisy-Roberts and D.T. Burns are members of the CCRI(I) working groups on key comparisons (KCWG), on accelerator dosimetry (ADWG) and on brachytherapy standards (BSWG). Both the KCWG and the ADWG met in April 2008. P.J. Allisy-Roberts and D.T. Burns contributed to the special issue of Metrologia for radiation dosimetry, as principal authors (papers on free-air chambers and international aspects), co-author (on cavity standards) and as referees.

C. Michotte is the coordinator of the CCRI(II) Working Group on the SIR Transfer Instrument. C. Michotte is the contact person at the BIPM and rapporteur for the JCGM-WG1 that met in November 2007, and in May 2008 at which she was replaced by N. Fletcher.

G. Ratel is a member of the CCRI(II) working groups on the extension of the SIR to beta emitters, on key comparisons (attended with P.J. Allisy-Roberts and C. Michotte), on measurement uncertainties, and on the realization of the becquerel for which he is the Rapporteur. Three of these meetings took place at the BIPM in December 2007.