Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Quality management system
5 Requirements for the welding process
   5.1 General
   5.2 Clamping force
   5.3 Pre-heating
   5.4 Flashing
   5.5 Upsetting
   5.6 Upset current
   5.7 Unclamping
   5.8 Welding parameters
   5.9 Steps across the weld
   5.10 Removal of excess upset
   5.11 Post-weld heat treatment
   5.12 Rail end preparation and horizontal alignment
        requirements
6 Procedure approval
   6.1 General
   6.2 Information to be supplied by the purchaser
   6.3 Sample preparation
   6.4 Approval tests
        6.4.1 Visual inspection
        6.4.2 Weld trimming
        6.4.3 Weld straightness and flatness
        6.4.4 Magnetic particle or dye penetrant inspection
        6.4.5 Bend testing
        6.4.6 Macro examination
        6.4.7 Micro examination
        6.4.8 Hardness testing
        6.4.9 Fatigue testing
   6.5 Test result report
7 Approval of other rail profiles or grades
   7.1 General
   7.2 Sample preparation
   7.3 Approval tests
   7.4 Test result report
8 Approval of the Welding Contractor
   8.1 General
   8.2 Welding procedure
   8.3 Operators
   8.4 Supervision
   8.5 Weld Inspection
   8.6 Equipment
9 Weld production following procedure approval
   9.1 Weld production
   9.2 Information to be supplied by the purchaser
   9.3 Rail end preparation and horizontal rail alignment
        requirements
   9.4 Weld parameter monitoring
   9.5 Weld identification
   9.6 Visual inspections
   9.7 Steps across the weld
   9.8 Finishing
        9.8.1 Correction of vertical and horizontal weld
               alignment
        9.8.2 Profile finishing of the rail head
   9.9 Weld straightness and flatness
   9.10 Bend testing
        9.10.1 General
        9.10.2 Additional bend test
        9.10.3 Bend test procedure
        9.10.4 Interpretation of results
        9.10.5 Retesting
   9.11 Documentation
Annex A (normative) Bend test requirements
Annex B (normative) Test weld fracture faces - Recording
        of defects
Annex C (normative) Fatigue test method for flash butt welds
  C.1 Scope
  C.2 Test equipment
  C.3 Calibration procedure
      C.3.1 General
      C.3.2 Test piece
      C.3.3 Test piece preparation
      C.3.4 Instrumentation
      C.3.5 Procedure
  C.4 Fatigue test method
      C.4.1 General
      C.4.2 Staircase testing method
      C.4.3 Example of the data analysis of a fatigue
            strength determination by the staircase method
      C.4.4 Past-the-post testing method
Annex D (normative) Macro examination and micro examination
  D.1 Macro examination
  D.2 Micro examination
Annex E (normative) Hardness testing
Bibliography