On the same oil derrick job (Some oil derricks on the north slope of Alaska failed catastrophically when a blizzard blew in. Analysis showed the wind had literally blew the rigs apart with the SAE 416 Stainless steel being fractured into small pieces without deformation. Analysis also showed that the design was fine, there were no external environmental or chemical or mechanical (other than 60 kph wind and -65 °C temperatures) influences that caused failure, bringing attention onto SAE 416 Stainless used in the construction.), all four tires on a Range Rover failed catastrophically while driving from rig to rig during the storm. It looked like someone had torn the tires into pieces, but they couldn't have as vehicle is driven at that time. Security video showed nobody near the vehicle when it was parked. The tires were made of E-SBR. What could have happened? Can there be a solution so that next time this does not repeat ?
My explanation: SBR is not resistant to oil or fuel resistant and it can be prone to weathering.More over SBR sustains temperarutes above -50 degree centigrade . so too low a temperature and the tires will 'Cold Tear' too high and the tires will harden and go off.When a tire starts out cold and is worked on the road / track surface the temperature rises, as the temperature rises the surface rubber is removed at a faster rate than when the tire is up to operating temperature. The discarded surface rubber forms little balls at the working edge. This Cold Tearing or Cold Shreading reduces the life of the tire. We should use tyre warmers to avoidthis . Am i right ??
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