"Work Of Camc For Out Of Warranty Coaches & Periodical Maintenance Of Under Warranty Coaches For Pressurized Flushing System (Pfs) And Electro Pneumatic Pressurized Flushing System (Eppfs) Installed In Lhb Coaches At Ngp/Aq Coaching Depot For The Period Of 24 Months." & "Work Of Modification In Pressurized Flushing System As Prescribed By Rdso, Mcf-Rbl In Lhb Coaches Based At Nagpur Division".