Buckling Of Track:
SWITCH EXPANSION JOINT (SEJ):

Switch Expansion Joint is an expansion joint installed at each end of LWR, CWR to permit expansion, contraction of the adjoining breathing lengths due to temperature variations.

BUCKLING OF TRACK:
  • Bucking or a tendency towards bucking may occur, among others, in the following circumstances.
  • Failure to adhere to the temperature ranges specified for operation on LWR/CWR
  • Inadequate resistance to longitudinal, lateral and vertical movement of the track due to deficiencies in ballast section or/and inadequate ballast consolidation.
  • Use of ineffective fastenings or missing fastening resulting in loss of creep resistance and torsional resistance
  • Excessive settlement of formation.
  • Improper functioning of SEJ