The adjustment of an NDT instrument using an appropriate reference standard, to obtain or establish a known and reproducible response.

Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards



Adjustment of instruments prior to use to an arbitrary reference value.

Source: API RP 7G-2, Recommended Practice for Inspection and Classification of Used Drill Stem Elements, First Edition, August 2009. Global Standards



Activity for the establishment of rules and characteristics for the purposes of their voluntary and repeated utilisation aimed to ensure orderliness in the spheres of manufacture and circulation of products and to raise the level of competitiveness of products, works or services.

Source: Federal Law on Technical Regulation, No. 184-FZ, Russian Federation, December 2002 (amended September 2010). Regulations

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