Declaration to the issue of defective switch tongues
All investigations carried out up to now and supported by subsequent tests and metallurgical analyses demonstrated that the character of the defect does not impact operation safety in any way. SŽDC can thus ensure rail operability with partial restrictions only.
According to a laboratory report of an independent accredited institute, the superficial visible defect originated during the production process (hot working) and subsequent service load did not result in its expansion into the profile depth.
As this defect exceeds tolerance within the given standard, SŽDC in cooperation with the switches’ supplier and the input material producer agreed to exchange the tongues with detected defects successively.