
OIL & GAS
Our Oil & Gas D ivision is an EPIC contractor and market leader in providing fabrication and construction services across the structural steel, mechanical, electrical, instrumentation and piping disciplines for projects in the oil and gas, metals and minerals and power generation industries.
Specialist sections within the division provide experienced management, extensive fabrication capabilities and skilled construction. Furthermore, we have commissioning teams for capital projects, turnarounds, shutdowns and plant maintenance. These services are supported by flexible construction operating systems, as well as an extensive fleet of company owned cranes and equipment. The Oil & Gas and Infrastructure Divisions of ALPHANR are capable of delivering almost all multi-disciplinary construction projects in Qatar.
The primary service delivery areas of the Oil & Gas Division are :
• EPIC Projects
• Structural – Design and Fabrication
• Piping – Manufacture and Installation
• Storage Tanks – Fabrication, Installation and Refurbishment
• Electrical and Instrumentation
• Transformer and Explosion Prevention Systems
• Operation and Maintenance
• Manufacturing of Pressure Vessels
EPIC Projects
Our team is capable of carrying out Engineering, Procurement, Installation and Commissioning (EPIC) contracts within the Oil & Gas sector, specialising in projects with a Mechanical, Electrical and Instrumentation orientation. We always complete our works to the complete satisfaction of our client.
Our team has expertise in mobilisation of personnel, plant and equipment required for all oil and gas refinery and petrochemical plant shutdown activities.




Our team has successfully completed EPIC contracts for our clients such as Qatar Petroleum, RASGAS, QAPCO and Qatar Steel Company


Structural Design and Fabrication
Our team has the capability and infrastructure to offer the full design and construction of all types of structural elements. Our fabrication facility can produce single units for transportation to site, or in the case of larger structures, elements for assembly on site. ALPHANR’s service includes the full site installation or assembly, utilising our skilled labour force and in-house cranage, plant and equipment.
Our team main Oil & Gas facility is situated in the Umm Salal area near Doha. This facility has a covered workshop over 1,600 m2 and an open yard of over 20,000 m2. The fabrication shop is equipped with the latest machinery which includes Oxygen/Gas Profile Cutters, Guillotines, Plate Rollers and different industry types of welding equipment.
Piping – Fabrication and Installation
Our team is equipped with major types of welding processes which include:
• Shielded Metal Arc Welding [SMAW]
• Tungsten Inert Gas Welding [TIG]
• Metal Inert Gas Welding [MIG]
• Fluxed Cored Arc Welding [FCAW]
Our team is able to manufacture piping in a range of sizes in all types of ferrous and nonferrous
materials which include:
• Carbon Steel
• Stainless Steel Duplex
• Cupro-Nickel
• Aluminium
Our team has in excess of 40 Welding Procedure Specifications [WPS] for steel. Welding procedures and welders are qualified as per ASME Sec IX and QP specification and certified by TPI.
Our welders’ certifications are renewed every six months based on the successful production welds actually produced.
We have a proven track record of consistently delivering quality performance with defect free products on time. Accordingly, we encourage our customers to verify this claim by checking our weld repair rate records which are invariably under one per cent of total weld length.



Storage Tanks – Fabrication, Installation and Refurbishment
Our team has designed and manufactured above ground steel tanks to store flammable and combustible liquids and chemicals in accordance to API standards. Types of tanks include Cone Roof Tanks, Dome Roof Tanks and Floating Roof Tanks of various diameters.
Our team also undertakes tank refurbishment, replacement of shell/roof/bottom plate, desludging and all associated works, including fire detection/protection, level gauging systems, and cathodic protection.
Transformer Explosion Prevention Systems
Our team is the leading installer and executer of Transformer Explosion Prevention Systems in Qatar.
We have successfully executed the vast majority of the Transformer Explosion Prevention Systems for KAHRAMAA Phase 7 and 8 substations in association with companies such as Hyundai, Iberdrola, Isolux, Areva and ABB.
Electrical and Instrumentation
Our team is a Class “A” electrical contractor specialising in:
• Installation of Transformers, Switchgear and other Substation Equipment
• Plant Lighting
• Installation of Earthing & Lighting Protection System
• Installation of Hazardous Area Electrical Equipment
• Commissioning and Electrical Installations
• Power and Control Cable Laying, Cable Tray Installations
• HV Cable Termination and Jointing (Up to 33 KV)
• Installation of Standby Power Generators
• Instrumentation and SCADA Systems
Operation and Maintenance
Our team acutely aware of the time and monetary impact that results from poorly planned and shoddily executed maintenance shutdown tasks. Therefore, meticulous attention is paid to the scheduling and logistical side of all shutdowns we undertake. We have executed shutdowns in various stations in Dukhan Fields and Mesaieed Area for clients such as Qatar Petroleum, QAFCO, Qatar Steel Company and RASGAS.
Shutdown works include
• Catalyst Loading and Unloading
• Heat Exchanger Refurbishment
• Test-Separator Maintenance
• Rotary Equipment Inspection/Testing
• Vessel Cleaning
• Pressure Hydro Testing
• Re-installation including Instrument Dismantling
• Calibration
• Pumps Maintenance and Seal Replacement
• Repair of Concrete Foundations
• Demolition of Redundant Foundations
• Pipe Supports Modification


Pressure Vessels
Our team fabrication facility at Umm Salal is certified to fabricate pressure vessels and other pressure retaining items in accordance to ASME codes and repair and carries out alterations to pressure retaining vessels in accordance NBIC. Our team of highly qualified engineers and QA/QC personnel possess the necessary expertise and experience to cater to the design, fabrication and repair needs of any client.
The following are the list of stamps secured by Our team:
• ASME “U” – Manufacture of Pressure Vessels conforming to ASME Sec VIII Div. 1
• ASME “S” – Manufacture and assembly of Power Boilers conforming to ASME Sec 1
• ASME “PP” – Fabrication and assembly of Pressure Piping conforming to ASME code Sec 1 and ASME B31.1
• NBC “R” – Shop repairs alterations and field repairs of Pressure Vessels, Boilers and Pressure Piping
• NBC “NB” – For registering Pressure Vessels, Boilers and Pressure retaining parts

