General Contracting

ADKA Trading & Contracting LLC basically a Construction company Specialized in Civil, Mechanical, Electrical and Instrumentation works in Power Plants, Petrochemicals and Chemical Plants.

ADKA Trading & Contracting LLC, headquartered at Eastern province of Saudi Arabia Having Branches in Bahrain, India & UAE. ADKA owned team of Professional engineers and experienced team of crafts men hired from India, Philippines, Pakistan and Nepal. ADKA fully equipped by its own equipment's required to execute the work at site.

ADKA management Team can support the execution team with well financial back up. ADKA management Policy is to Deliver the Right Product on Right Time with Minimum Profitable margin. We expect that our submission would meet your requirements in every re­ spect and hope for having a favorable opportunity to serve you.

Civil - Backfilling Works

Civil - Excavation Works

Concrete Structures Work

Concrete fence

Culverts

Concrete Channels

Civil - Asphalt Works

Mechanical Works

Electrical Works

Instrumentation Works

  • Structural Installation Works
  • Piping field fabrication & Installation Works
  • Mechanical Works
  • Miscellaneous civil Works
  • Electrical Works
  • Instrumentation works

Structural InstallationWorks

Which includes Foundation preparation and Pipe racks, Warehouse structures, Process building Structures Installation and alignment works.

ADKA Structure Installation Methodology
  • Foundation Preparations

    Chipping, verification of anchor bolts, cleaning of anchor bolts, Comparison of civil Foundation drawing along with Structural Base plate to avoid mismatching of Column Base plate.Shim works and Level by using survey instruments.

  • Columns & Floor beams Installations

    Rigging plan has to be prepared for critical lift, Structural Columns & floor beams has been inspected prior to installation, and Structural columns connected with floor beams create a Ladder format. Avoid lifting individual col­ umns, Most of the Bolt torqueing can be done at ground and also Diagonal check can be done at ground. Lifting plates shall be fixed on top of columns. Paint touch up shall be completed in ground prior to lift.

    After lifting of column Using Dumpy level straightness of column and floor beam level shall be checked, secure the anchor bolt-double nuts and torqued to required value.[It's always advisable to install Staircase column and Ladders on priority bases, for free access to all floors].

  • Miscellaneous Structures [Handrails/Chequred plates & gratings]

    After completion of each floor beams and completion of Torqueing and alignment works, Chequered plates/Gratings shall be installed on each elevation and Staircase gratings shall be installed on priority basis.

  • Grouting of Base plates

    Grouting materials approval shall be taken prior to use, after completion of final inspection of structures Columns, Base plates shall be offered for Grouting, using compressor air blow foundation surface and verify the clean and oil free, rafted surface, Formworks shall be prepared and soaked 24hrs prior to grouting. Prior to grout foundation surface shall be checked again, Grout mix shall be prepared and poured as per standard specification. Grout cubes samples shall be prepared send for testing.

Piping field fabrication & Installation works

  • Piping Field Fabrication works

    Stainless steel, Alloy steel and carbon steel piping fabrication location works shall be sorted out with proper barrier. Classification of Alloy steel, Stainless steel and CS piping shall be sorted in different location and proper TAG and Board shall be placed to identify dissimilar materials. Care shall be taken while choosing the Stainless steel and Alloy steel Piping fabrication tools [Brush, grinding wheel, electrodes].

  • Material Inspection

    All piping materials upon arrival of MTC [Mill Test Certificate] shall be checked against the heat number of Pipe. Heat number of Pipe shall be marked [high­ lighted] by using marker. And proper color coding shall be done immediately upon unload. Heat numbers shall be punched on pipe. Each and every pipes and fittings shall be checked for physical damage, damage on edges and verify by using Vernier caliper the schedule of the pipe and ovality of the pipe. Rejected pipes shall be quarantined, NCR shall be prepared and send to vendor and client. Positive Material Identification has to be carried out for Piping materials as per requirement of Project specification.

  • Piping Fabrication

    Piping Isometric drawings shall be sorted as per continuation draw­ ings, Spooling and weld mapping shall be prepared. Required shop drawings shall be stamped and issued for fabrication, proper control of production shall be recorded every day.Completed fit-up spools, isometric drawings shall be highlighted. After fit-up inspec­ tion spools shall be sent for fabrication welding.

  • Welder Qualification

    Most of important stage of piping fabrication is welding and qualified welder, WPS. Welder qualification shall be carried out by using qualified welding inspector, prior to offer for welder qualification welder has to be trained as per WPS to be used in produc­ tion, Mitigation of welding defects shall be explained to a welder. Proper qualification booth shall be prepared for mass welder qualification. Welders shall be qualified for dif­ ferent piping Materials grade, Thickness range, Diameter range, Welding process, Weld­ ing position. Dissimilar welding if required and multiple welding process. After welder Qualification, welder shall be issued a card and copy of the card shall be taken in record in QC department, and copy shall be maintained in Electrode issuance booth.

  • Welding works

    Weld management procedure shall be prepared and implemented at site. Required WPS- welding procedure Specification as per section IX shall be prepared and posted at welding area. [For eg: CS/CS welding works - CS WPS shall be posted near welding works so that welder can read and apply the required current and weaving]. The effective imple­ mentation of weld management will give the best result and reduce the rejection of welding.

  • Factors which affects the welding

    Welder mindset, Welder training, Weather condition, frequent breaks during welding, Start and stop, pre-heating, interpass cleaning, use of portable oven, proper grounding, proper tools, fit-up, Welding booth. Baking and re-baking.

  • Testing [Destructive and Non-Destructive Testing]

    With reference to the requirement of standard and specification percentage of Destruc­ tive and Non-Destructive Testing shall be decided. RT/UT/MPI and Hardness Testing, all fabrication completed spools after visual check send for NOT Testing.Weld Joints marked and identified for Testing. NDT accepted spools transferred to Sandblasting and painting. After the painting inspection spools delivered to site. Proper Tag to be fixed.

  • Piping Installation works

    Prior to Installation of piping, pipe rack handover documents shall be received from Structural contractor. Priority shall be given to full length pipes shall be laid on rack as per General Arrangement drawings.

    All full-length pipe shall be lifted and pipe support shall be installed and proper Level and alignment shall be maintained. Fabricated spools shall be connected and Field joints shall be welded and subjected to inspection and Testing.

    After completion of piping as per Isometric drawing, complete line shall be verified against ISOMETRIC/GA/Pipe supports. Completed lines shall be subjected to Hydro test­ ing/Pneumatic Testing. All lnline instruments shall be removed prior to Testing. After completion of successful testing, all instruments and valves reinstated and bolt torque­ ing shall be performed.

    Final Paint touch up works shall be carried out. And color bands shall be printed and permanent labeling shall be printed on Pipe with Direction of flow.

Mechanical Works

Mechanical Installation works split into two segments Static Equipment and Rotary Equipment.

  • Foundation preparation

    Survey level check and co-ordinates check, and anchor bolt projections and co-ordinates. North/East Coordinates and axis shall be marked using line Dori or sting wire. Shims/pad plates shall be installed and level check verified using Dumpy level. After the level confirmed pad plates shall be locked with grout mix on sides and required curing shall be performed. Foundation anchor bolts orientation checked against equipment base plate drawing prior to erection schedule.

  • Static equipment Erection

    Prior to installation following documents shall be prepared

    • Approved Rigging Plan
    • Site verification for position of crane and trailer and Equipment access to the erection location.
    • Required Safety permits
    • Certification of crane and lifting gears and Rigging team and operators.
    • Approved Spreader beams shall be arranged if required.
    • Above 40Ton Rigger level #1shall be carried out the rigging works.

    As per rigging plan Equipment shall be transported to site.Prior to lift Bottom of Base units shall be cleaned. Center points of the column or vessels shall be identified and marked.Erection of static equipment shall be carried out as per rigging plan.Orienta­ tion of Equipment shall be measured as per General arrangement drawing. Straightness shall be checked by using theodolite or plumb.

    Multiple reference shall be taken while check the straightness.Since nozzle flange shall be deviated due to welding.

    Upon completion of alignment anchor bolt nuts shall be secured for all bolts, and double nuts shall be snug tightened. Required Alignment inspections shall be carried out and documents shall be prepared and get approved from client.

  • Grouting of Base plates

    Grouting materials approval shall be taken prior to use, after completion of final inspection of Columns, Base plates shall be offered for Grouting, using compressor air blow foundation surface and verify the clean and oil free, rafted sur­ face, Formworks shall be prepared and soaked 24hrs prior to grouting. Prior to grout foundation surface shall be checked again, Grout mix shall be prepared and poured as per standard specification. Grout cubes samples shall be prepared send for testing.

  • Rotary equipment Erection

    Prior to installation following documents shall be prepared Approved Rigging Plan

    • Site verification for position of crane and trailer and Equipment access to the erection location.
    • Required Safety permits.
    • Certification of crane and lifting gears and Rigging team and operators.
    • Approved Spreader beams shall be arranged if required.
    • Above 40Ton Rigger level #1shall be carried out the rigging works.

    As per rigging plan rotary equipment shall be transported to site. Prior to lift Bottom of Base units shall be cleaned.Center points of the column or vessels shall be identified and marked. Erection of rotary equipment shall be carried out as per rigging plan.Orientation of Equipment shall be measured as per General arrangement drawing. Base Alignment shall be carried out while crane holding the equipment. After completion of base setting, machine shall be lowered and anchor bolts/nuts shall be secured.

  • Rotary Equipment Alignment

    Base Alignment: precision base alignment shall be carried out as per APl610/680 using Master level with least count [-/+ 0.02mm]. All shims installed as per standard. Soft foot shall be checked by using dial indicator. Elevation check from datum line to the center of shaft, longitudinal Co-ordinates to nearest foundation center parallelness, Grouting space should be kept minimum 25mm.

  • Coupling Alignment

    Face and Rim Alignment Method, Reverse Alignment or Laser Alignment.

    Static Equipment ground assembly and Installation and Alignment works Rotary Equipment Installation and Alignment works, Equipment loading and unloading storing and preservation.

Miscellaneous civil Works

  • Grading, Asphalt & Road Marking Works

    Supply & installation of base coarse grading Apply MClon above Base Coarse,Asphalt Binding Coarse,Apply RC2 on above binding coarse, Installation of Asphalt Wearing coarse,Road Marking white,Road arrow Marks thermoplastic reflective paint works.

  • HCIS CLASS-IV Chain Fence Installation Works & AVB Installation works

    Removal and replacement of the existing fence works, Installation testing & Commis­ sioning for new antipersonnel fence reinstatement. Installation of Anti Vehicle Barriers (ROSS CRASH RATED FENCE) works

  • OTHER CIVIL WORKS

    Excavation,back filling & Form wood works, Lean Concrete works.Installation of Ducting & Sub Ducting works.Installation of street light concrete Poles.

Electrical Works

  • Equipment Installation works

    Electrical Equipment installation [MCC] Marshaling Control Cabinet, Field Electrical Panels, Switch gears, Junction boxes,Transformers, Modular. PLCS, LCS. Electrical Instal­ lations includes Alignment works and final inspections.

  • Conduit and Cable Tray Installations

    Conduit works for lighting and lightening works, power cables.Cable tray fabrication and erection with bonding jumpers and final Inspections.

  • Lighting System

    Installation of Lighting poles, Conduits, fittings, laying wiring and termination and loop checking and testing and energisation.

  • Cable Pulling and Cable Termination

    Cable Testing [Meggerng], Cable laying, Dressing, Cable numbering and Termination and Continuity check, and Energisation.

  • Grounding System

    Laying of Ground cables, Testing and Cad welding and Anode Installation and Testing of Grid.

Instrumentation Works

Installation of DCS panels, Installation of following listed Line Instruments, Calibration of Field Instruments .

Installation and Alignment of Digital Control System Panel and Termination works, Field Control panels. Loop checking and Pre-commissioning works and Field Calibration works and Paging and Alarm system.

Field Instrument Calibration Laboratory :

  • Pressure Transmitters
  • Temperature Transmitters
  • Pneumatic Pressure Transmitters
  • Electronic Pressure Transmitters
  • Differential Pressure Transmitters
  • Level Transmitters
  • Flow Transmitters
  • Pressure Control Valve
  • Pressure Safety Valve
  • Motor Operated Valve
  • Pressure Relief valve
  • Field Bus Segment Indicators
  • Advanced Valve Positioner
  • Current to Pneumatic converter
  • Temperature Gauges
  • Pressure Gauges
  • Field Mount Indicators
  • Pressure Switches
  • Flow Switches
  • Level switches
  • Resistance Temperature Detector [ RTD]
  • Thermocouple [ T/C]

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Adka General Contracting Company LLC

Our
Vendor Code

10065029