Overhauling Of Valves And Sea Chest Filters At Various Locations On Mv Swaraj Dweep , Overhauling / Servicing Of Valves And Strainers: The Following Valves ( Seachest , Obd , Fire Hydrants , Storm , Fire Dampers , Quick Shut Off & Other System Valves Like Sd / Sdnr / Globe / Butterfly / Gate / Storm / Quick Shuttoff / Hydrants Valves Etc . , ) Are To Be Dismantled , Cleaned , Overhauled Offered To The Surveyor , Mmd For Inspection And Necessary Repairs To Be Carriedout As Per The Recommendations Of The Surveyor And The Valves Are To Assembled , Pressure Tested And Fitted Onboard . Contractor Has To Execute Complete Valves & Strainers Scope Of Work As Per Enclosed Attached Scope Of Work ( Rfo ) , Terms And Conditions Mentioned In Annexure-A , Annexure-B To Satisfaction Of Ss & Hsl . , Overhauling Of Valves: Up To 80Mm , Overhauling Of Valves: 81 To 150Mm , Overhauling Of Valves: 151 To 250Mm , Overhauling Of Valves: 251 & Above Sizes , Tank 34 Outlet To Main Engine - Pneumatically Operated Quick Closing Valve ( Including Actuator ) , Overhauling Of Relief Valves , Overhauling Of Storm Valves: Up To 125Mm , Overhauling Of Storm Valves: 126 To 150Mm , The Following Filters/Strainers To Be Removed , Dismantled , Cleaned , Renewed Brass Strainer Element And Top Covers , Box Upped With New Joints/O-Rings , Pressure Tested , Change Over Cock Repaired , Fitted On Board , Operation Showned To Ss . All Required Materials Like Strainer Element , Top Covers , Purging Cocks , Fasteners , Joints , O-Rings , Paints Are Supply And Fitment In Contractor Scope . All Machining Works , Brazing Works , Metal Build Ups Are In Contractor Scope . Contractor Has To Execute Completestrainers Scope Of Work As Per Enclosed Attached Scope Of Work ( Rfo ) , Terms And Conditions Mentioned In Annexure-A , Annexure-B To Satisfaction Of Ss & Hsl . , Engine Room And Fwd P/P Room Sea Chest Filters Collar Damaged , To Rectify . Appox . Dia 900 Mm Thickness 7 . 5Mm . , Covers For All Four Sea Chest Filter Casing To Fabricate And Renew As Per Sample . Material : Cast Iron . Cover Sizes - E/R ( P ) : 730 Mm Dia X 40 Mm Thick , E/R ( S ) : E/R ( P ) 730 Mm Dia X 40 Mm Thick And Fwd ( P&S ) : 900 Mm Dia X 50 Mm Thick . , Fwd Pump Room Filter Element To Fabicate New . Top Collar Thickness 5Mm , Collar Dia 76Mm , Filter Dia 715Mm , Hight 810Mm . Material S . S , Thickness=3Mm , Filter Mesh Hole Dia = 5Mm . , Engine Room Sea Chest Filter Element Sheared Off From Bottom Same To Be Renewed , Collar Thickness 5Mm , Collar Dia 602Mm , Filter Dia 550Mm , Hight 625Mm . Material S . S
