Apr 29, 2011
Consortium gearing up for construction of Medupi low-pressure systemsBack
Construction|Engineering|Africa|Components|Compressors|Concrete|Control Valve Technology|Design|Eskom|Fabricated Piping Systems|Fire|Industrial|Industrial Water Cooling|Lesedi Nuclear Services|Nuclear|Pipe|Pipelines|PROJECT|Projects|Pumps|Resources|Road|Storage|System|Systems|Testing|Training|Water|Wetback Contracts|Africa|South Africa|Matimba Power Station|Plant Pipelines|Contractors With Essential Services|Equipment|Low-pressure Services|Low-pressure Systems|Nuclear|Services|Systems|Injury|Fabrication|Horst Lakemeier|Ian Boggon|Power|Rail|Water|Pipe|Pipelines|Corrosion Protection
© 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)
Other Pumps News
Alongside pumps technology company Verder Pumps South Africa’s (VPSA’s) existing range of industrial pumps, the company exhibited its new Verderflex Dura 55 peristaltic pump for optimum performance and easy maintenance in heavy-duty applications at the Electra Mining...
Recent Research Reports
Construction 2015: A review of South Africa’s construction sector (PDF Report)
Creamer Media’s Construction 2015 Report examines South Africa’s construction industry over the past 12 months. The report provides insight into the business environment; the key participants in the sector; local construction demand; geographic diversification;...
Liquid Fuels 2014 - A review of South Africa's Liquid Fuels sector (PDF Report)
Creamer Media’s Liquid Fuels 2014 Report examines these issues, focusing on the business environment, oil and gas exploration, the country’s feedstock supplies, the development of South Africa’s biofuels industry, fuel pricing, competition in the sector, the...
Water 2014: A review of South Africa's water sector (PDF Report)
Creamer Media’s Water 2014 report considers the aforementioned issues, not only in the South African context, but also in the African and global context, and examines the issues of water and sanitation, water quality and the demand for water, among others.
Defence 2014: A review of South Africa's defence industry (PDF Report)
Creamer Media’s Defence 2014 report examines South Africa’s defence industry, with particular focus on the key participants in the sector, the innovations that have come out of the sector, local and export demand, South Africa’s controversial multibillion-rand...
Road and Rail 2014: A review of South Africa's road and rail infrastructure (PDF report)
Creamer Media’s Road and Rail 2014 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 network, the funding and maintenance of these respective networks, and the push to move road...
Real Economy Year Book 2014 (PDF Report)
This edition drills down into the performance and outlook for a variety of sectors, including automotive, construction, electricity, transport, steel, water, coal, gold, iron-ore and platinum.
This Week's Magazine
The international Square Kilometre Array (SKA) radio telescope – which is to be jointly hosted by South Africa and Australia with, later, outstations in other countries – may not yet exist, but international scientific working groups are already deciding what...
A free Web-based solar power plant capacity-planning tool offers project planners and developers, as well as governments, a means to assess the solar energy potential of thin-film solar PV power over an area of land. The tool was developed by thin-film solar...
As yet, no specific methodology, timeline or costs have been finalised to remedy the water ingress, excessive to contractual specifications, into the Gautrain tunnel between emergency shaft two (E2) and Park Station, says Bombela Concession Company technical and...
The “seriously disruptive” electricity outages in South Africa have cost packaging group Astrapak more than R2-million in “irrecoverable downtime costs”, the company said on Monday, adding that the power cuts were negating some of the benefit of energy saving...
Bakkies and more affordable cars dominated South Africa’s new vehicle market in 2014. Unaudited data from the Department of Trade and Industry (DTI) shows that South Africa’s most popular vehicle in 2014 was the Toyota Hilux, selling 37 562 units.