Which condition regarding thermite welding is strictly enforced?

The condition regarding thermite welding that is strictly enforced relates to torch cutting of rail. This is crucial because thorough and precise preparation of the rails is essential to ensure the integrity and quality of the weld. In thermite welding, preheating the rail ends before welding and obtaining clean and smooth surfaces are vital steps that greatly influence the success of the weld. Torch cutting may be necessary to achieve this proper preparation—ensuring that the surfaces to be welded are free of any contaminants, including rust and dirt, and that they fit together correctly.

Additionally, strict enforcement around torch cutting helps to maintain safety standards and avoid accidents that could arise from poorly prepared rail sections. Following proper procedures during this stage ensures that the final weld will bond effectively and withstand the stresses of both operational and environmental conditions. Thus, adherence to regulations around torch cutting in thermite welding is vital for both quality control and safety within the railway industry.