Simplify the following text for a Grade 7 native English-speaking person.
Original: Constructed at Crewe Works in 1954 , the Duke , as it is popularly known , was a replacement for the destroyed Princess Royal Class locomotive number 46202 Princess Anne , which was involved in the Harrow and Wealdstone rail disaster of 1952 .
Simplified: It was a replacement for the destroyed Princess Royal Class vehicle number 46202 Princess Anne . It was involved in the Harrow and Wealdstone rail disaster of 1952 .