Engineering Services for Assessor Role For RAF A1 Water Desalination Plant, Qatar

QEWC has been awarded by the State owned Off taker Kahramaa to Build, Own and Operate a new desalination plant of approximately 45 MIGD (RAF A1) to meet the summer peak water requirements.

The RAF A1 Plant comprises the following:

  • Sea water pump house including offshore intake piping, filtration and chlorination systems and sea water pumps
  • Sea water outfall structure
  • MSFE Desalination Units along with all its auxiliaries
  • HRSGs (with supplementary firing) connected to RAF B1 gas turbines
  • Evaporative Coolers for RAF B1 GTs
  • Stand alone Auxilary Boiler of capacity equal to that of one HRSG
  • Boiler feed water system complete with make up water system, feed water Dearators, chemical dosing system and feed water pumps along with online water quality monitoring facilities
  • Fuel gas supply system along with control & metering facilities
  • Dump condenser
  • Steam and condensate interconnection with RAF A & RAF B
  • Product water remineralization plant
  • Product water disinfection system ( ClO2)
  • Product water concrete storage reservoirs
  • Product water forwarding pump house along with Metering facilities
  • Connection to the Water Network along with necessary equipment
  • Addition of two 132 kV bays along with transformers and feeders to the new project.
  • Civil Works.
  • Balance of Mechanical plant
  • Balance of Electrical plant
  • Control & Instrumentation
  • Fire Protection and Detection Facilities
  • Cranes and lifting equipment
  • HVAC
  • Drainage systems (Chemical drains, Storm water drains, High temperature condensate drains and Sewage system)
  • Environmental monitoring facilities;
  • Telecommunications between the Plant and Transmission System Operator (KAHRAMAA);
  • Tools and manuals;

Services provided

Design Phase:

Review of the design of the Facility to verify compliance of the EPC Contractor’s Facility design with the Proposed Basic Design of the Facility. The review was based on checking for compliance with the Basic Design. Commissioning schedule & procedures

  • An examination of the EPC Contractor’s quality control procedures including inspection arrangements;
  • A review of the interfaces between the Facility and all external connections; and

A report to KAHRAMAA and the QEWC immediately upon finding that any element of the design of the Facility is not in compliance with the requirements, including in this report an identification of available remedies and effect on the Construction Programme due to such non- compliance.


Construction Phase:

The Assessor was responsible to carry out his duties for the Construction Activities of the Facility, by means of inspection and monitoring associated with the design, manufacture, fabrication, construction, commissioning, operability, reliability and maintainability of the Facility:

  • Review and provide opinion on the technical aspects of the WPA (including technical appendices) and the EPC Contract (including technical appendices) and verify that the EPC Contract is consistent with the requirements of the WPA, including the Bid.
  • Review of the construction programme;
  • Monitor the project implementation schedule;
  • Review and provide comments to the Parties with respect to any interface issues between the Facility and the Grid Systems;
  • Preparation and issue to the Parties of a monthly progress report with respect to those activities in which the Assessor has been involved, including schedule monitoring;
  • Monitor the Construction progress by regular visits as instructed jointly by KAHRAMAA and the Company.;
  • Develop and implement an integrated plan for monitoring, inspecting and witnessing testing of the contract works;
  • Develop and implement procedures and documentation to manage, record and communicate the Assessor’s inspection, expediting and witnessing activities;
  • Inspect at suppliers’ works for assurance of quality and expediting of major plant components and equipment as authorized by the Company;
  • Carry out major equipment inspection and factory test results; and


Testing and Commissioning Phase:

  • Review and approve procedures for the commissioning and for main equipment including the Energising Tests and Load Tests, Performance Tests, Reliability Tests and Acceptance Tests.
  • Witness on energizing tests, load tests, Performance Tests, Reliability Tests and Acceptance Tests, and approving commissioning test results for main equipment.
  • Witness on the installation and testing of the settlement system and Fuel Demand Model.
  • Review and provide comments/approval to the Company and KAHRAMAA with respect to the EPC Contract Performance, Reliability and Acceptance Test results;
  • Assist the Company and KAHRAMAA in responding to any documentary or questions regarding the test results.

Technical data

  • Desalination plant capacity: app. 45 MIGD




Qatar General Electricity & Water Corporation (KAHRAMAA)