Specifying the binding of slit coil packs
Implemented
Rail R
Accident
17.2.2017
2017-S3
Suosituksen perustelu
The breaking of the radial straps holding the slit coil pack together was preceded by the radial straps becoming loose and displaced during the handling and transport after they were bound at the factory. The loose radial straps allowed the slit coil pack to tilt during transport. In order to ensure that the radial straps are sufficiently tight and that they stay in place, the Safety Investigation Authority recommends that:
Recommendation
SSAB specifies the binding of slit coil packs and verifies it by calculations, taking the stresses due to handling at the factory into account in addition to the lateral accelerations on the coil pack during railway transport.
Suosituksen tarkennus
It is appropriate to find out the accelerations caused on the load by the railway equipment in cooperation with the railway undertaking using the results from the running characteristics tests of the rolling stock.
Toimenpide-ehdotukset
The breaking of the radial straps holding the slit coil pack together was preceded by the radial straps becoming loose and displaced during the handling and transport after they were bound at the factory. The loose radial straps allowed the slit coil pack to tilt during transport. In order to ensure that the radial straps are sufficiently tight and that they stay in place, the Safety Investigation Authority recommends that: