[ASME ASME 2014 Power Conference - Baltimore, Maryland, USA (Monday 28 July 2014)] Volume 1: Fuels and Combustion, Material Handling, Emissions; Steam Generators; Heat Exchangers and Cooling Systems; Turbines, Generators and Auxiliaries; Plant Operations and Maintenance; Reliability, Availability and Maintainability (RAM); Plant Systems, Structures, Components and Materials Issues - Retrofitting Fossil Power Plants for Increased Flexibility