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Draft Definition: OIML Conformity to Type (CTT) Presented to: Follow-up OIML Seminar on Conformity to Type (CTT- II) Prague 10 Oct 2011 Presented by: Stephen O’Brien - CIML Member Manager, Measurement and Product Safety Service Ministry of Consumer Affairs New Zealand
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Conformity to Type Utrecht seminar highlighted that CTT has a variety of potential meanings Defining what is meant by CTT is the first step before we consider what (if any) role OIML should or could play Created a ‘Straw man’ working definition for your consideration Invite your consideration and comment
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OIML Conformity to Type? OIML CTT activity would be voluntary in nature for participants CTT would involve Conformity Assessment – “testing and evaluation of a measuring instrument to ascertain whether or not a single instrument, an instrument lot or a production series of instruments comply with all the statutory requirements applicable to this instrument type” (D16).
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OIML Conformity to Type? Assessment against subset of the requirements prescribed in the relevant OIML Recommendation Could include: – examination of the instrument – limited targeted testing of: influence factors, disturbance factors, endurance and performance Testing completed in a suitably equipped and competent laboratory
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Other key considerations Where would CTT fit within the existing structure of Legal Metrological Controls? At what point within the supply chain CTT occur?
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Provisional Answers - CTT Voluntary form of metrological supervision Distinct from but complimentary to existing Legal Metrology Controls like: – national standards for instrument type – legal units of measurement – type approval – initial and subsequent verification
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Provisional Answers - CTT Primarily pre-market surveillance activity involving conformity assessment of a production instrument Focus is on a production instrument or instruments CTT could also include Quality System Surveillance of a manufacturer
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Draft Definition OIML Conformity to Type: A voluntary system combining pre-market and quality system surveillance activities focused on the conformity assessment of measuring instruments to give assurance that manufactured (or production) instruments meet the requirements applicable to their approved type.
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Feedback and Discussion I would now invite your comment and suggestions on further developing the ‘Straw man’ Working Definition of CTT Thank you for your time and attention.
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