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[接上页] Participation in the arrangement through their regional metrolo-gy organization is also open to the NMIs of States and Economiesthat are Associates of the CGPM. 1 The arrangement 1.1 This is an arrangement between national metrology instituteswhich specifies terms for the mutual recognition of nationalmeasurement standards and for recognition of the validity ofcalibration and measurement certificates issued by nationalmetrology imstitutes. It is drawn up by the CIPM with the a-uthority given it under Article 10 (1921) of the Rules Anne-xed to the Metre Convention. 1.2 this arrangement is in two parts as specified in paragraph 2below:part one concerns national measurement standards andpart two concerns calibration and measurement certificates.1.3 Participation national metrology institutes, signatories tothis arrangement, may choose to limit their participation topart one, the recognition of national measurement standards.1.4 each signatory to this arrangement is the national metrologyinstitute designated by the appropriate national government-al or other offical authority of the Member State of the Me-tre Convention as being responsible for national measurementstandards. For any state that has more than one such design-ated institute, the arrangement is signed by one instituteon behalf of all, the names of the other institutes being a-ttached to the document. 1.5 Designated NMIs of States or Economies that are Associatesof the CGPM may participate in the arrangement only throughtheir regional metrology organizations by signing a declara-tion, appended to this arrangement. 1.6 Intergovernmental and international organizations designatedby the CIPM may also participate in the arrangement. 2 Scope of the arrangement 2.1 participating national metrology institutes, listed in Appe-ndix A, recognize the degree of equivalence of national mea-surement standards, dervied from the results of key compari-sons, for the quantities and values specified in Appendix B.This constitutes part one of the arrangement. 2.2 Participating institutes recognize the validity of calibrat-ion and measurement certificates issued by other participat-ing institutes for the quantities and ranges specified in A-ppendix C.This constitutes part two of the arrangement. 3 Technical basis of the arrangement 3.1 The technical basis of this arrangement is the set of resul-ts obtained in the course of time through key comparisons c-arried out by the Consultative Committees of the CIPM, theBIPM and the regional metrology organizations (RMOs), and p-ublished by the BIPM and maintained in the key comparison d-atabase. Detailed technical provisions are given in the Tec-hnical Supplement to this arrangement. 3.2 Key comparisons carried out by Consultative committees or t-he BIPM are referred to as CIPM key comparisons; key compar-isons carried out by regional metrology organizations are r-eferred to as RMO key comparisons; RMO key comparisons mustbe linked to the corresponding CIPM key comparisons by meansof joint participants. The degree of equivalence derived fr-om an RMO key comparison has the same status as that derivedfrom a CIPM key comparison. 3.3 A Joint Committee of the RMOs and the BIPM (the Joint commi-ttee or JCRB), created by the CIPM, is responsible for thecoordination of data provided by the RMOs, and other actionsundertaken by them to promote confidence in calibration andmeasurement certificates (see paragraph 9.3). 4 Responsibilities of the Consultative Committees of the CIPMThe Consultative Committees have the responsibility for choos-ing the key comparisons listed in Appendix D and affirming thevalidity of the results. The particular responsibilities of t-he Cosultative Committees are detailed in the Technical Suppl-ement. 5 Responsibilities of the regional metrology organizationsThe national metrology institutes that are signatories to thisarrangement undertake to put in place appropriate strutures w-ithin their RMOs so that the RMOs may: a) make proposals to the Consultative Committees on the choiceof key comparisons; b) carry out the RMO key comparisons, described in the Techni-cal Supplement, corresponding to the CIPM key comparisons;c) participate in the JCRB (see paragraphs 9.3 and 9.4 below);d) carry out supplementary comparisons and other actions desi-gned to support mutual confidence in the validity of calib-ration and measurement certificates issued by participatinginstitutes (see paragrph 7.3 below). 6 Participation in key and supplementary comparisons 6.1 Participation in a CIPM key comparison is open to laborator-ies having the highest technical competence and experience,normally the member laboratories of the appropriate Consult-ative Committee. Those laboratories that are not members ofa consultative committee and not NMIs must be nominated bythe designated national metrology institute referred to inparagraph 1.4 as being responsible for the relevant nationalmeasurement standards. In choosing participants, the Consul-tative Committees should take proper account of regional re-presentation. The number of laboratories participating in CIPM key comparisons may be restricted for technical reasons.6.2 Participation in key comparisons organized by an RMo is opento all RMO members and to other institutes that meet the ru-les of the regional organization (including institutes invi-ted from outside the region) and that have technical compet-ence appropriate to the particular comparsion. |