• Author / Uploaded
• Abdullah Al Jubayer

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CONSTRUCTION FLOWCHART FOR FABRICATION, ERECTION & TESTING OF PIPING Initiate Project Non Conformity Report Receiving Approved Construction Drawings Underground Piping Prepare Material Storage Place Excavation Aboveground Piping

Receiving Materials & Proper Storage Shifting Materials to Laying area

Rejected

Material Inspection Acceptance of compacted trench bed & crane pad

Pipe Surface Cleaning

Accepted

Preparing Weld map & spool generation on Isometric Drawings

Prepare the Temporary Supports inside Trench

Grit Blasting & Primary Painting

Shifting Materials to installation area Determine Materials location, level & mark them

Lowering the pipe inside trench

Cutting adequate size of pipe pieces

Preparing the beveled end edge

Cleaning inside the pipe

Rejected Cutting adequate size of pipe

Fit-up & tack weld

Fit-up Inspection

Accepted

Preparing the beveled end edge

Welding

Line up

Accepted Root Back gauging & welding

Fit-up & tack weld

Shifting Materials Blasting Area

Accepted

Repair of Welding

Shifting supports to their installation area

Acceptance of Structure & Support Foundation

Finishing of Welding Surface Cleaning Installation of Structures & Supports

Accepted Rejected

Welding Visual Inspection

Accepted Rejected On field Surface Preparation & Priming

Installation of pipe spool

Dye Penetrant Test

Accepted Rejected

Mark support position into pipe spool

Field Joint Fit-up & Tack Weld

Radiographic Test

Accepted

Repair

Wrapping Coating

Holiday Test

Rejected

Reinforcement Pad Pneumatic Pressure Test Accepted

Installation of Valves

Acceptance of NDT Results Torqueing of the flanges

Rejected Accepted Whitewash over Wrapping Tape

Water fill service Test/ Water fill Service Test Hydrostatic Test

Secondary & Final Coat Painting

Rejected

Punch List Work Laying of Pipe In Trench Bed

Backfilling

Accepted Pre-commissioning Work

Paint Integrity Test

Acceptance & Handover of all documents

Closing

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