Nctps I Se Mi Circle Aoh 25 26 Bm Dn Unit Ii Complete Removal Of Worn Out Damaged Insulation In Boiler Drum Down Comer Pipe Line 6 Nos Ring Header Areas During Annual Capital Overhaul Long Shutdown And Relaying Of Insulation While Unit In Service Nctps I Se Mi Circle Boiler Maintenance Division Annual Overhaul Work For The Year 25 26 Specification No 124 25 26