In 1947 , No. 1831 was given electric lighting .
In 1947 , No. 1831 was converted to oil - burning as part of government - backed fuel trials in anticipation of a post-war coal shortage , though it was reverted to coal - firing in December 1948 .
In 1947 , No. 1831 was given electric lighting and converted to oil - burning as part of government - backed fuel trials in anticipation of a post-war coal shortage , though it was reverted to coal - firing in December 1948 .