A technically workable high-pressure locomotive can still be unsuitable for a large railway fleet. The argument is that its maintenance requirements approach those of a major works. Crewe and Swindon illustrate facilities that ordinary engine sheds do not match. A network-wide adoption therefore depends on supporting infrastructure as well as the performance of an individual engine.
Notable Point · 2:20:22-2:22:03
High-pressure locomotives and the maintenance network
The limiting factor for advanced locomotive boilers is presented as the ability to maintain them across the railway.