Saudi Arabia

Powering the central region

Projects worth millions of dollars originate at the drawboards of Al-Bawardy Consulting Engineers (ABCE) and provide essential utilities to homes, offices and industries. Among them is what is considered to be the second largest 380 kV substation in the world.

This specialised consultant, which has extensive consultancy supervision experience in the fields of power and water desalination over the past 22 years, has supervised a wide range of electricity and water projects and has played a pivotal role in masterplanning several others.

Current projects that the company is busy with include three substation contracts for the Saudi Electric Company (SEC), formerly Saudi Consolidated Electric Company, (Sceco) worth a total of SR1.965 billion ($524 million) in the Central Province.

''We are nearing completion of a prestigious project, namely the 380 kV substation (S/S) No 9009 - which is considered to be the second-largest 380 kV substation in the world, for SEC in the Central Region,'' says Dr A K S Hamad, general manager. ''Another project - a 380 kV substation S/S 9008 in Riyadh for the same client is ongoing and likely to be completed by end of this year.''

Elaborating on the SR1.125 billion ($300 million) S/S 9009 project, Dr Hamad says: ''The project involves setting up a 380 kV/132 kV GIS (gas insulated switchgear) substation fed by the PP9 combined cycle power generation plant. It entails adding two 150 MVAR shunt reactors at SS9010 and adding additional 380 kV grid bays at SS9001.

''SS9009 consists of:

  • 30 bays of 380 kV gas insulated switchgear;

  • Two 350 MVA 380/132 kV super grid transformers;

  • 14 bays of 132 kV GIS;

  • Static var compensation with two reactors (TCR) of 150 MVA rating; and

  • Associated control and protection equipment.

    ''We are in charge of design review, shop floor inspection, site supervision of construction/testing/commissioning, project management and guidance. The main project contractor is Reyrolle (Rolls Royce Group) of the UK assisted by sub-contractor Saudi Sadelmi Technical Construction Company (Sadelmi Group of Italy).

    ''We are also attending to the interface between SS-9009 (exporting station) and the generating station PP-9 project which is being supervised by Electrowatt Engineering Services Limited, Switzerland.''

    The project was launched in July 1995.

    Work on S/S 9008 is being implemented at a cost of SR452 million.

    ''The project involves setting up a 380/132 kV substation underneath an existing 380 kV double-circuit overhead line and reconfiguring the line through this substation on completion,'' he explains.

    The job consists of the following:

  • 11 bays of 380 kV GIS;

  • Three 500 MVA 380/132/33 kV supergrid transformers and a spare supergrid transformer of the same specifications;

  • One 40 MVAr 132 kV shunt reactor;

  • 20 bays of 132 kV GIS;

  • Remote end modifications on protection/communication equipment at S/S 9002, 9004 and 9001;

  • Auxiliary AC/DC supply systems; and

  • All associated control and protection systems, power line carrier and optical fibre communication systems.

    ABCE's role involves overall project management, coordination and guidance; design review of all project drawings; shop floor inspection of all major plant items; and site supervision of construction including testing and commissioning. The main contractor is Reyrolle (VATech Croup) assisted by subcontractor Saudi Sadelmi Technical Construction Company.

    The third substation, S/S 9011, is being built at a cost of SR207 million at Howtat Sudair, 180 km away from Riyadh.

    The 380kV/132 kV GIS substation is stationed approximately midway between a 380 kV double-circuit overhead transmission line and substations S/S 9009 and S/S 9010. The supergrid substation 9011 is intended to meet the power infeed requirement of the surrounding 132 kV substations through 132 kV underground and overhead transmission line networks, Dr Hamad explains.

    The project entails:

  • 13 bays of 380 kV GIS;

  • Three 350 MVA, 380/132/33 kV supergrid power transformers;

  • Two 80 MVAr 380 kV shunt reactors;

  • 17 bays of 132 kV GIS;

  • Remote end modifications at S/S 9009 and S/S 9010;

  • All associated auxiliary AC/DC power supply systems, control and protection system, power line carrier and optical fibre communication equipment.

    ABCE was responsible for overall project management, coordination and guidance; design review of all project drawings; shop floor inspection of all major plant items/equipment; and site supervision of construction including testing and commissioning.

    The main contractor for the project is Siemens of Germany.

    ''The contract period of the project is 27 months and all the allied works/supplies are progressing smoothly on schedule. The substation is expected to be commissioned in March 2002,'' says Dr Hamad.

    The Riyadh-based ABCE is a Saudi company owned by Engineer Mohamed AlBawardy. Its engineering team - consisting of professionals well-qualified and experienced in 380 kV substations, transmission lines, MSF and SWRO (seawater reverse osmosis) desalination plants - has completed several projects in the Kingdom.

    ABCE has capabilities for preparing project specifications, feasibility studies, system design, tender documentation, tender evaluation, design review, site supervision, testing and commissioning.

    Since its inception in 1978, ABCE has successfully completed engineering consultancy supervision of several projects in the Kingdom for clients including ministries and the SEC in the central, eastern and southern regions.

    ''For the Ministry of Industry and Electricity, ABCE has done a 25-year master electrification plan, consisting of generation, transmission, substations and distribution for Saudi Arabia, entirely prepared by its own specialised team,'' says Dr Hamad. ''Major aspects of this planning include the complete load forecast, system interconnections, power generation, transmission and distribution planning, economics and recommendations for the planned development.''

    The company has witnessed a steady growth in business year on year. ''The construction in Saudi Arabia is not as good as it has been last year,'' Dr Hamad comments. ''However, ABCE is hopeful of better prospects for the sector the coming year.''

    Over the recent past, the company has carried out consultancy supervision of the construction of various 380 kV, 132 kV substations and overhead lines in the eastern, western, southern and central regions, which have been built by leading contractors including Mitsui & Company of Japan, NEIReyrolle of the UK, MerlinGerin of France, VATech of Austria and Siemens, Germany.

    It has also been responsible for consultancy supervision of various desalination plants (multi-stage flash - MSF, reverse osmosis based) for the Saline Water Conversion Corporation (SWCC) in Riyadh and Jubail as well as in Bahrain, which were built by WeirWestgarth of the UK and Preussag of Germany.

    ABCE has successfully completed the consultancy supervision of a 10 million gallons per day (mgpd) SWRO desalination plant in Bahrain.

    Another project, a 20 mgpd SWRO desalination plant at Jubail for the same client, is expected to be completed by March next year. Work on the SR649 million plant started in January 1993. It is being built by a consortium of Preussag Saudi Arabia and Yuksel Insaat Saudia.

    ''The project is a modern computer-controlled reverse osmosis plant with state-of-the-art equipment. The plant is designed to produce 90,920 cu m/day of potable water with total dissolved solids (TDS) less than 450 mg/litre and chlorides less than 250 mg/litre from raw sea water with TDS ranging from 42,000 to 46,500 ppm and at temperatures from 20 to 35 deg C,'' he explains. ''As a turnkey consultancy project, ABCE was involved from the design stage and is working to complete the commissioning stage.''

    ABCE, which has a staff of 100, also has offices in Hotat Sudair, near Majmah and in Jubail.

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