目录简介 | Contents Foreword 1 Scope 2 Normative references 3 Terms and definitions 4 General requirements 5 The inspection process and its selection 6 Evaluation of RT results and quality grading for melting welding joints of pressure-bearing equipment 7 The RT result evaluation and quality grading for melting welding joints of pressure-bearing equipment’s pipes and pressure pipelines made of steel, nickel and copper 8 Inspection records and reports Annex A (Informative) Radiography requirements for tube-fillet welds Annex B (Normative) Industrial Radiographic Film System’s Characteristic Index Annex C (Informative) Regular Inspection Methods of the Nigrometer (Optical Densimeter) Annex D (Informative) Determination of Darkroom’s Safety Irradiation Time Annex E (Informative) The diagram of typical penetrating methods Annex F (Informative) Determination methods of penetrating times for circular butt welds Annex G (Normative) Calculation methods of the focal size Annex H (Normative) Calculation methods of Geometric Unsharpness (Ug) Annex I (Informative) Light filter Annex J (Normative) Placement Principle of the Positioning Marks Annex K (Informative) The measuring methods for ionic concentration of thiosulfate on the film Annex L (Normative) Reference block’s type and specification |