Apr 29, 2011
Consortium gearing up for construction of Medupi low-pressure systemsBack
© Reuse this
The consortium is led by technical resources provider Lesedi Nuclear Services, and includes fabrication and construction company Wetback Contracts and cooling systems provider Industrial Water Cooling (IWC). It was awarded the contract in 2009.
Consortium leader for the Medupi project and Lesedi director of projects Horst Lakemeier says there were some interesting challenges encountered during the design phase of the project, most of which have been overcome. The consortium is now well into the procurement phase and has started construction on a number of systems.
Construction started on Unit 6 first, and will progress to Unit 1. Once the first unit is commissioned, each subsequent unit will follow suit at regular intervals. Lakemeier believes the consortium and its subcontractors are up to the challenge to deliver their part of the project, which will provide the other contractors with essential services for their commissioning and testing activities.
The LP Services contract includes the design, procurement, fabrication, installation and commissioning of 17 low-pressure systems. These include raw, potable and demineralised water supply and distribution, auxiliary cooling, compressed-air supply and distribution, ash conditioning water supply, boiler feed water make-up, clean and dirty drain water distribution and fire water supply and distribution systems.
IWC is undertaking the design and manufacture of the auxiliary cooling towers, while Wetback Contracts is handling the manu- facture and installation of piping. Lesedi is responsible for the design and procurement of all equipment and the associated civil work.
The consortium is supported by a number of subcontractors, including black-women-owned (BWO) enterprise Powerstation Engineering Services, as well as Stefanutti Stocks, Trotech, ACE, Rushtail, Fabricated Piping Systems and Control Valve Technology.
The raw water supply pipeline involves a number of road, rail and fence crossings that will require specialised pipe jacking to avoid disrupting other contractors working in the area.
The raw water pipeline will be constructed in two stages. The first will involve bringing water from the Mokolo tie-in directly to the plant, while the second will include a raw water storage dam to act as a supply buffer. Both stages include above-ground and underground pipelines.
Corrosion protection, including cathodic protection, is being installed on the pipe- lines, particularly where the pipeline runs parallel to high-voltage power lines. Storm water and process water retention dams are being constructed by other contractors, from which water will be used for ash conditioning systems, fly ash conditioning and bulk washing.
While other subcontractors are installing the water treatment plant, the consortium is responsible for distributing the potable water to the terminal points of the end-users.
Lakemeier says one of the biggest challenges on the project was the increased compressed air requirement. This involved the installation of two compressor houses instead of the original requirement for one and larger air compressors. These issues are normal for a project of this nature and have duly been incorporated into the compressed-air system design, he adds.
Regarding where IWC is constructing the first of two auxiliary cooling water plants, Lesedi deputy project manager Ian Boggon says each plant consists of four concrete cooling towers and associated pumping and processing equipment. He adds that con- struction of the south plant is well advanced and the north plant terracing work is now complete.
Toward the end of March, the LP Services consortium received a bronze award from Eskom for achieving 250 000 lost-time- injury-free work hours at the Medupi project, in March. It simultaneously received a project award for achieving 365 days without a lost-time incident and now aims to achieve one-million work hours without an injury being recorded.
Localisation, Procurement and Training
From a training perspective, since the start of the project, the consortium has taken on a number of previously disadvantaged indivi- duals, within several disciplines, from Limpopo and its surrounding area, including welders, pipe fitters, semiskilled workers, site erectors and technicians. The consortium believes formal training and project experience for these individuals will benefit them as well as the companies within the consortium.
Edited by: Martin Zhuwakinyu© Reuse this Comment Guidelines (150 word limit)
Creamer Media Senior Deputy Editor
Other News This Week News
Recent Research Reports
Water 2015: A review of South Africa's water sector (PDF Report)
Creamer Media’s Water 2015 Report considers the aforementioned issues, not only in the South African context but also in the African and global context in terms of supply and demand, water stress and insecurity, and access to water and sanitation, besides others.
Input Sector Review: Pumps 2015 (PDF Report)
Creamer Media’s 2015 Input Sector Review on Pumps provides an overview of South Africa’s pumps industry with particular focus on pump manufacture and supply, aftermarket services, marketing strategies, local and export demand, imports, sector support, investment...
Liquid Fuels 2015: A review of South Africa's liquid fuels sector (PDF Report)
Creamer Media’s Liquid Fuels 2015 Report examines these issues in the context of South Africa’s business environment; oil and gas exploration; fuel pricing; the development of the country’s biofuels industry; the logistics of transporting liquid fuels; and...
Road and Rail 2015: A review of South Africa's road and rail sectors (PDF Report)
Creamer Media’s Road and Rail 2015 report examines South Africa’s road and rail transport system, with particular focus on the size and state of the country’s road and rail infrastructure and network, the funding and maintenance of these respective networks, and...
Defence 2015: A review of South Africa's defence sector (PDF Report)
Creamer Media’s Coal 2015 report examines South Africa’s coal industry with regards to the business environment, the key participants in the sector, local demand, export sales and coal logistics, projects being undertaken by the large and smaller participants in the...
Real Economy Year Book 2015 (PDF Report)
There are very few beacons of hope on South Africa’s economic horizon. Economic growth is weak, unemployment is rising, electricity supply is insufficient to meet demand and/or spur growth, with poor prospects for many of the commodities mined and exported. However,...
This Week's Magazine
The BMW Group will invest R6-billion at BMW Group South Africa’s (BMW SA’s) Rosslyn plant to produce the next-generation X3 sports-activity vehicle (SAV) for the local and export markets. Rosslyn will continue production of the current 3 Series through its lifecycle,...
The lack of consequences for poor performance and transgressions on the part of contractors remains a significant hurdle to tackling South Africa’s service delivery challenges, delegates heard at the Consulting Engineers South Africa Infrastructure Indaba, on...
City of Ekurhuleni executive mayor Mondli Gungubele earlier this month officially named the city’s bus rapid transit (BRT) system, Harambee.
About 58% of unstructured data stored by companies is dark data, which means that the value or regulatory importance of the data has not been determined. Subsequently, most of the stored data add costs, rather than increasing revenue or reduce regulatory risks, says...
Effective logistics, import/export and manufacturing consulting services require detailed industry knowledge and experience, but can add significant value to these industries by providing expert advice on various technical elements in their value chains, says...