230.107—Tender frame and body.
        
        (b) Height difference.
         The difference in height between the deck on the tender and the cab floor or deck on the steam locomotive shall not exceed 1 1/2 inches.
    
    
        
        (c) Gangway minimum width.
         The minimum width of the gangway between steam locomotive and tender, while standing on tangent track, shall be 16 inches.
    
    
        
        (d) Tender frame condemning defects.
         A tender frame with any of the following  defects shall be removed from service immediately and repaired:
    
    
        
        (1) 
         Portions of the tender frame or body (except wheels) that have less than a 2 1/2 inches clearance from the top of rail;
    
    
        
        (2) 
         Tender center sill that is broken, cracked more than 6 inches, or permanently bent or buckled more than 2 1/2 inches in any six foot length;
    
    
    
        
        (4) 
         Tender center plate, any portion of which is missing or broken or that is not properly secured; or