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Rate Contract For Tank M And I Jobs In Iocl , Bgr , Part-A: Tank M&I Jobs Group-1 ( Gq ) , Dismantling Of Floating/Fixed Roof Tank Retrieving All Existing Fittings , Instruments , Foam Seals , Side Railings , Dismantling Of Damaged Corroded Shell / Roof Of Welded Oil Storage Tank By Gas Cuttings/Cold Cutting Or Any Other Suitable Means As Directed By Engineer In Charge And Transporting Them To Storage Point/ Scrapyard As Designated Without Disturbing / Damaging Any Portion Of Existing Piping , Equipment , Tank And Complete In All Respect With All Labour , Tools , Machineries , Supervision Etc . Requirement Of Heavy Equipment To Be Envisaged By Engineer-In-Charge And To Be Arranged Separately , If Required , As The Same In Not Included In The Item Rate . Requirement Of Scaffolding To Be Envisaged And Decided By Engineer-In-Charge As Per Site Requirement And Scaffolding Item To Be Paid Separately . , Roof : Dismantling Of Complete Roof/ Structural/ Shell/ Course/ Truss: Retrieving All The Existing Fittings , Instrumentations , Side Rails , Etc . By Gas Cutting/ Cold Cuttings Directed By Inspection/ Site Engineer . And Shifting Of Dismantled Roof Plates , Structural Etc . To Ground ( Only Scrap ) To Transport And Kept Properly The Same In Scrap Yard After Taking/ Recording Weight . During The Entire Job All Safety Norms To Be Followed In Any Case . Note: The Measurement Of Dismantling , Shall Be Calculated Based On Actual Area Laid Of Complete Roof Plate Minus 10% Corrosion Correction . , Shell: Dismantling Of Shell Course Retrieving/ Removing Of Shell Plates . Retrieving All Existing Manholes/ Nozzles/ Fittings , Instrumentation , Side Rail Etc . By Gas Cutting/ Cold Cutting As Directed By Eic . Shifting Of All Scrap To Scrap Yard/ Designated Location As Per Eic After Taking And Recording Weight . During The Entire Shifting Job , All Safety Norms To Be Followed . Note: The Measurement Of Dismantling , Shall Be Calculated Based On Actual Area Of Shell Plate Replaced Minus 10% Correction Corrosion . , Bottom: Dismantling Of Bottom ( Annular ) Plates Completely: Dismantling Of Bottom ( Annular ) Plates , Job Involves Cutting Of Bottom Plateand Shell To Bottom Plate Welding , Jacking Of Shell . And Also Cutting Of Annular To Sketch Plate Cutting . Dismantling Of Bottom ( Sketch ) Plate: Dismantling Of Bottom ( Sketch ) Plates By Gas Cutting And Roof To Be Properly Supported And Handing Over To Civil Maintenance For Tank Bottom Foundation Repair . Shifting Of Roof Support As And When Required To Facilitate Repair/ Relaying Of Foundation . Note: The Measurement Of Dismantling , Shall Be Calculated Based On Actual Area Laid Of Complete Bottom Sketch Plate Minus 10% Corrosion Correction . , Restoration Of Storage Tanks Transportation Of Ms Plate From Storage Points To Worksite , Cleaning , Cutting In Required Sizes , Rolling , Edge Preparing , Laying Shell Courses / Roof Plates For The Storage Tanks And Partial Laying Above Existing Bottom After Bulged Portions To Be Cut And New Plate To Be Welded , Flushing With Existing Bottom And Continuous Welding , Installation , Fixing Of Various Types Of Manholes , Nozzles , Flanges , Gaskets , Orifice Assemblies , Tapping For Gauges And Thermowells Etc . All Types Of Fittings , Level And Other Fittings Retrieved During The Dismantling Of The Corroded Roof , Fixing Back The Side Railings Of Dismantled Along With The Corroded Roof Plates , And Pneumatic , Vacuum And Other Types Of Testing , Flushing , Cleaning , Pickling Of Welded Joints Where Required By The Specification And Completing All Such Works In All Respect For Restoring The Tanks To The Original Condition And Commissioning As Per Drawings , Specifications , Relevant Code ( Api-650/ Api-653 Is-803 ) And Instruction Of The Engineer-In-Charge And Inspection Manager . Note: The Ms Plates For Bottom , Shell , Roof , Extension Plates , Reinforcement Pads Plates For Shell Manholes , Foam Dam Will Be Supplied By The Owner As Per Drawing And Specifications . All Other Labour And Materials Etc . Shall Be Arranged By The Contractor At His Cost . Requirement Of Heavy Equipment To Be Envisaged By Engineer-In-Charge And To Be Arranged Separately , If Required , As The Same In Not Included In The Item Rate . Requirement Of Scaffolding To Be Envisaged And Decided By Engineer-In-Charge As Per Site Requirement And Scaffolding Item To Be Paid Separately . , Roof: Fabrication/ Erection Of Fixed/ Floating/ Fixed Cum Floating Roof From Store To Work Site , Cleaning , Cutting In Required Sizes , Rolling , Edge Preparation And Handing Over To Painting Agency And Recollection For Laying Shell Course/ Roof Plates ( Keeping Painted Surface In Side Tank ) And To Be Welded New Plates/ Structural/ Truss Etc . As Per Inspection Recommendations As To Develop Complete New Roof For The Tank After Installation Of Various Types Of Manholes , Nozzles , Flanges , Orifice Assemblies , Instrumentation Tapping For Gauges/ Thermo-Wells/ Walkways/ Platform For Operation Requirements Etc . , Fittings For All Required Valves Etc . All Such Articles , Which Were Retrieved Before Dismantling The Old Roof . Fixing Back All The Same In Repaired Condition If Not Usable; The Side Railing , All Jobs Related To Tank Roof Replacement To Be Completed Including All Ndt As Per Codes In All Respect For Restoring The Tank In Original Condition And Commissioning As Per The Drawing , Specifications , Relevant Latest Codes ( Per Api-650/653/Is:803 ) And To The Satisfaction Of Inspection/ Production And Engineer-In-Charge . , Shell: Installation Of Shell Plates Along With All Nozzles Connected To Inlet/ Outlet Lines , Drains , Roof Drain Connection As Per Original Drawing And All Other Existing Fittings , Instrumentations , Side Rails , Etc . To Bring Back The Tank In Original Condition And To The Satisfaction Of Inspection/ Operation And Engineer-In-Charge . All Weld Joints Conforming To Ndt , Such As Dp Test , Pneumatic Test; Joints Radiography Etc . As Per Code Api-650/653 And Is-803 Note: Radiography And Dp Test Shall Be Paid As Separate Item . , Bottom: Fabrication/ Erection/ Laying Of Bottom/ Annular Plates 10/14/16 Mm Thick: Transport Of Ms Plates From Store To Work Site , Fabrication , Erection , Overlaying And Welding Of Bottom/ Annular Plates Keeping Painted Surface Towards Bituminous Pad . Making Slot In Tank Shell , Insertion Of Annular Plate , Shell To Bottom Welding From Both Side Of Shell , Testing Of Butt/ Lap Joints By Soap Solutions Under Pneumatic Test , Chalk-Diesel Test Of Shell To Bottom Annular Plate All Around . Job Involves-Edge Preparation; Fixing Of Backing Strip; Welding; Ndt I . E . Performing Dp Test , Pneumatic Test; Joints Radiography Etc . Misc . Job Involves . Lifting Of Tank Shell By Jacking . Hydraulically Jack Up Of Tank Shell To Be Done In Case Of Annular Plate Replacement . All Weld Joints Preparation By Buffing To Facilitate Ndt , Shell Window Cutting ( Of Appropriate Size ) In 1St Shell Course For Insertion Of Bottom Plates And Reposition And Welding The Same After Completion Of Job . Welding Of Shell Window After Preheating The Plate . Proper Stiffening/ Support To Be Provided In Cut Out Plate To Prevent Deformation . All Jobs Related To Tank Bottom Replacement To Be Completed In All Respect For Restoring The Tank In Original Condition And Commissioning As Per The Drawing , Specifications , Relevant Latest Codes ( Api-650/653; Is-803 ) And To The Satisfaction Of Inspection/ Operation And Engineer-In-Charge . Note: Radiography And Dp Test Shall Be Paid As Separate Item . Fabrication/ Erection/ Laying Of Bottom Sketch Plates 6/8 Mm Thick: Transport Of Ms Plates From Store To Work Site , Fabrication , Erection , Overlaying , Edge Preparation/ Fixing Of Backing Strip/ Welding Of Bottom Sketch Plates Keeping Painted Surfac
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