Ingula Pumped Storage Scheme: Project Management Case Study

Transcription

1 Ingula Pumped Storage Scheme: Project Management Case Study Colin Logan Project Manager Gibb Engineering & Science South Africa BRAAMHOEK CONSULTANTS JOINT VENTURE

2 Definition of Project Management Planning, monitoring and control of all aspects of a project and the motivation of all those involved in it to achieve the project objectives on time and to the specified cost, quality and performance Source:

3 Structure of Presentation Concept of Pumped Storage Background to the Project Feasibility Design BCJV Services Ingula Project Development Programme Project Resources Primary Deliverables Project co-ordination & role-players Form of Contract

4 Conventional Hydro vs Pumped Storage Conventional Hydro - Water passes through a turbine and continues down the river Pumped Storage - Cyclical system with water passing through reversible turbines

5 Electricity Demand Curve Release energy System Demand (MW) Base load supply Store energy Time (h)

6 Weekly Operating Cycle

7 Growth Forecasts Long Term Planning Eskom & NER have identified a need for enhanced peak generation capacity to serve: - Growth in the industrial sector - Successful rural electrification programme IPSS selected for design and development ahead of many other alternatives considered since the 1980 s

8 Stages of Design In 1998 IPSS recommended for study at feasibility level Study undertaken by Eskom s own Hydro and Water Dept. and completed in November 2003 Feasibility Report suggested an installed capacity of 1 000MW, and After subsequent optimisation studies the installed capacity was increased to 1 333MW September 2003 interested parties invited to bid to provide consulting services for Detailed Design

9 Record of Decision (RoD) Issued by the Minister of Environmental Affairs and Tourism (13 December 2002)

10 Record of Decision Key conditions of the RoD: An environmental management plan shall be developed and its recommendations implemented A bypass system shall be provided to maintain the natural seasonal flows in the water courses at the upper reservoir No loss of the wetland due to flooding from the upper reservoir There shall be no negative impact on the wetland downstream of the upper reservoir A new cliff shall be provided for the colony of Bald Ibis to roost and nest Any new quarries must be below the minimum water level The Construction spoil shall be disposed of below the minimum water level The upper dam must blend in with its natural surroundings A low weir shall be built downstream of the upper dam to distribute the water across the wetland A baseline study shall be carried out for the wetland

11 Project Location

12 Braamhoek Consultants Joint Venture Contract signed for Phase 1 design service in May 2004 Principle Members Gibb Engineering & Science Knight Piesold Stewart Scott Sub Consultants ARQ South Africa (Dams) KP Canada (Transients, Penstocks & Gates) PBP New Zealand (E&M) NK Japan (Gates & Electrical) SWP United Kingdom (Hydropower Optimisation)

13 BCJV Services Provided to Eskom Phase 1: Project Optimisation Geotechnical Investigations Surface Works Geotechnical Investigations Underground Works Exploratory Tunnel Phase 2: Final Design, Tender Design Access and Site Roads Site Infrastructure Upper and Lower Dams Underground Works Hydro-mechanical & Electrical Works (Performance Specification)

14 BCJV Services Provided to Eskom (2) Phase 3: Construction Stage Design, Monitoring, Supervision and Sign-off Verification of Design Assumptions Foundation Interfaces and Design Rock Interface and Site Influenced Design Hydro-mechanical and Electrical Interfaces Construction Drawings Construction Supervision Record Drawings Project Sign Off

15 BCJV Service Structure BCJV Directorship Project Management Design Service Site Monitoring Service Supervision Service

16 Organogram (Design) Project Management Quality Manager Design Manager Review Specialists Hydropower Optimisation Underground Caverns and Tunnels Underground Civil & Structural E&M Dam Engineering Dam Sites Geotech. Investigations Roads Engineering Support

17 Organogram (Supervision) Project Management Chief Supervisor SITE MONITORING TEAM Senior Site Design Representative Site Design Representative (Surface Works) General Engineer Geologist (Dams) Site Design Representative (Underground Works) Civil Design & Coordination Engineer Geotechnical Engineers Geologists Senior Supervisor Dams Senior Supervisor Underground Works Supervisor Main Hydromechanical Supervisor Laboratory Service Supervisor Survey Service Supervisors Supervisors Ass Supervisors Ass Supervisors Ass Supervisors Ass Supervisors Clerks of Works Ass Supervisors Clerks of Works General Head Office Support Financial/Accounting Support Health and Safety Support Cost and Programming Support Documentation and Drawing Support Administration/Secretarial Support

18 Scheme Layout Upper Reservoir Intake Structure Surge Shafts Underground Powerhouse Outlet Structure Lower Reservoir

19 Waterway Layout

20 Powerhouse Complex

21 Project Programme

22 Project Resources Estimated resource requirements peak): Design Supervision Construction 120 professionals & technicians 110 professionals, technicians & IoW s to construction workers

23 BCJV s Primary Deliverables Construction Design Phase: Delivery of Construction drawings & Reinforcing details without delaying the Contractor drawings! Construction Supervision: Ensure that the work is constructed in accordance with the Works Information or Specifications

24 BCJV Planning Date information required from others Start Design Process Issue Construction Drawing Construction Start Date Design Lead Time Design Duration Lead time to Construction Design Approval Design Development Design Review

25 Lead Time Requirement

26 Monitoring

27 Design Interface Management 1. BCJV Satellite Services (Local & International) 2. Eskom Engineering & Client Office 3. Dams Contract 4. MUW Contract 5. Surface Buildings Contract Design coordination Centralized Design Office Issue for construction 6. E&M: Main Hydro-mechanical Station Cranes Main Transformers Auxiliary Mechanical Auxiliary Electrical

28 Form of Contract NEC Professional Services Contract (3 rd Edition) Main Option A Priced Contract with Activity Schedule Secondary Options X1 Price adjustment for inflation X2 Changes in law X3 Multiple currencies X9 Transfer of rights X10 Employer s Agent X11 Termination by the Employer X13 Performance Bond

29 Fundamentals of NEC Fundamental principle of the NEC Clause 10.1: All parties shall act as stated in the contract and in a spirit of mutual trust and cooperation. NEC Programme The NEC programme is far more than a simple bar chart showing the intended order and duration of activities to be completed. It includes the resources used (labour, equipment, etc) and therefore becomes a base comparison for any compensation event when assessing the effect thereof on the Contractor s Defined Cost.

30 Machine Hall Cavern

31 Upper Dam

32 Lower Dam

33 Thank you