BS EN 14587-2:2009

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements for the welding process
  4.1 General
  4.2 Clamping force
  4.3 Pre-heating - flashing
  4.4 Progressive flashing
  4.5 Upsetting
  4.6 Upset current
  4.7 Unclamping
  4.8 Welding program and records
  4.9 Step across the weld
  4.10 Weld trimming
  4.11 Post-weld heat treatment
5 Procedure approval of a MFBW machine
  5.1 General
  5.2 Sample preparation
  5.3 Approval tests
       5.3.1 Visual inspection
       5.3.2 Weld trimming and upset
              examination
       5.3.3 Step across the weld
       5.3.4 Magnetic particle or dye penetrant
              inspection
       5.3.5 Bend testing
       5.3.6 Macro examination
       5.3.7 Micro examination
       5.3.8 Hardness testing
       5.3.9 Fatigue testing
  5.4 Test result report
6 Approval of other rail profiles or grade
  6.1 General
  6.2 Approval tests
       6.2.1 General
       6.2.2 Grade R220
       6.2.3 Grade R260Mn
       6.2.4 Grade R350HT
7 Approval of the Welding Contractor
  7.1 General
  7.2 Requirements for initial approval
       7.2.1 Welding procedure
       7.2.2 Quality systems
       7.2.3 Information to be provided by the
              contractor
       7.2.4 Operators
       7.2.5 Supervision
       7.2.6 Weld Inspection
       7.2.7 Equipment
  7.3 Field approval of the welding contractor
  7.4 Audits
8 Weld production and acceptance requirements
  8.1 Information from the purchaser
  8.2 Site preparation of rail ends
  8.3 Rail alignment
  8.4 Weld parameter monitoring
  8.5 Weld identification
  8.6 Visual inspection
  8.7 Steps across the weld
  8.8 Profile finishing of the rail head
       8.8.1 Initial grinding
       8.8.2 Final grinding
  8.9 Geometrical acceptance criteria
  8.10 Weld production testing
       8.10.1 General
       8.10.2 Additional test requirements
       8.10.3 Bend test
       8.10.4 Interpretation of results
  8.11 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
Annex D (normative) - Macro examination and
        micro examination
Annex E (normative) - Hardness testing
Annex ZA (informative) - Relationship between this
         European Standard and the Essential
         Requirements of EU Directive 2008/57/EC
Bibliography

Describes requirements for the approval of a welding process by a MFBW machine at sites other than fixed plant, as well as the welding contractor together with the requirements for subsequent welding production.

This European Standard specifies requirements for the approval of a welding process by a MFBW machine at sites other than fixed plant, as well as the welding contractor together with the requirements for subsequent welding production. Where a MFBW machine is to be used in a static but temporary situation, the requirements of this part of the standard shall apply. It applies to new Vignole R220, R260, R260Mn and R350HT grade rails of 46 kg/m and above, as contained in EN 13674-1, welded by a MFBW machine at sites other than a fixed plant and intended for use on railway infrastructures. This European Standard applies to the welding of rails into welded strings.