Recommendation 4 of the 78th CIPM (1989)

Installation of docks at the BIPM

The Comité International des Poids et Mesures,


  • that it is important to main tain at the Bureau International des Poids et Mesures (BIPM) a high level of competence in the coordination of the time comparisons which provide the basis of TAI,
  • that practical experience at the BIPM in such time comparisons is already desirable and in the future will become essential,
  • that the present experience has been gained thanks to the facilities generously provided by the Paris Observatory,

decides that the BIPM should study the steps which would have to be taken for one or more docks together with the necessary timecomparison equiment to be av ail able on site, and

invites member laboratories of Comité Consultatif pour la Définition de la Seconde (CCDS), in view of the high cost of such installations, to examine the possibility of providing equipment on loan to the BIPM.

reference The reader should note that the official version of this Resolution is the French text

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