What is the maximum temperature allowed for train traffic across a completed thermite weld?

The maximum temperature allowed for train traffic across a completed thermite weld is significant because it directly impacts the integrity and stability of the weld joint. A temperature of 700 degrees Fahrenheit is generally regarded as the threshold that ensures the weld has fully solidified and reached adequate strength for normal operation.

Exceeding this temperature could lead to a reduction in the material properties of the weld, increasing the risk of defects, weakening the joint, or causing deformation. It’s essential that the weld is properly cooled and monitored to conform to this standard, ensuring that the weld maintains its structural integrity under the stresses of train traffic.

The other temperature options, while may suit other contexts, do not align with the established safe practices for train traffic, which specifically set the limit at 700 degrees. This guideline helps maintain safety and reliability in rail operations.