http://www.engineeringnews.co.za
  SEARCH
Login
R/€ = 13.13Change: -0.02
R/$ = 11.93Change: -0.06
Au 1205.77 $/ozChange: -0.30
Pt 1147.50 $/ozChange: -1.00
 
 
Note: Search is limited to the most recent 250 articles. Set date range to access earlier articles.
Where? With... When?








Start
 
End
 
 
And must exclude these words...
Close Main Search
Close Main Login
My Profile News Alerts Newsletters Logout Close Main Profile
 
Agriculture   Automotive   Chemicals   Competition Policy   Construction   Defence   Economy   Electricity   Energy   Environment   ICT   Metals   Mining   Science and Technology   Services   Trade   Transport & Logistics   Water  
What's On Press Office Tenders Suppliers Directory Research Jobs Announcements Letters Contact Us
 
 
 
RSS Feed
Article   Comments   Other News   Research   Magazine  
 
 
May 18, 2012

Supplier questions utility’s maintenance procedures, Eskom denies claims

Back
Sekela Bearings technical manager Warwick Steinhobel discusses the company's concerns about Eskom's Grootvlei power station. Cameraperson: Nicholas Boyd. Editing: Darlene Creamer.
 
 
 
Africa|Components|Eskom|Projects|Sekela Bearings|System|Africa|South Africa|Arnot Power Station|Arnot Station|Grootvlei|Grootvlei Power Station|Maintenance|Product|Service|Split Bearings Supplier|Malusi Gigaba|Power|Steinhobel|Warwick Steinhobe|Bearing|Bearings|Cast Iron|Eskom|Floor Vibration
Africa|Components|Eskom|Projects|System|Africa|||Maintenance|Service||Power||Bearing|Bearings|
africa-company|components|eskom|projects|sekela-bearings|system|africa|south-africa|arnot-power-station|arnot-station|grootvlei-facility|grootvlei-power-station|maintenance|product|service|split-bearings-supplier|malusi-gigaba|power|steinhobel-person|warwick-steinhobe|bearing|bearings|cast-iron|eskom-product|floor-vibration
© Reuse this



Split bearings supplier Sekela Bearings says it has a product that will reduce what it claims to be an unusually high bearings consumption at State-owned power utility Eskom’s Arnot power station, in Mpumalanga.


Sekela Bearings technical manager Warwick Steinhobel says bearing consumption at the utility’s Arnot power station is unusually high, owing to floor vibration that causes damage to the cast iron bearing components used in the seal-air fans.

“Seal-air fans are two-stage fans and the bearings sit between the impellers, so you cannot strip it, which is why split bearings are used,” he explains, adding that the bottom part of these bearings cannot be changed, as it cannot be removed from the fan.

Steinhobel alleges that the cast iron bearings base used in the Arnot station’s seal-air fans becomes damaged or breaks, damaging the rest of the bearing parts; however, as Eskom is unable to replace the entire bearing, it replaces only the top part.

“Eskom is fitting brand-new bearings to damaged cast iron, which is why the bearings do not last, resulting in the high bearings consumption,” he claims.


He states that Sekela Bearings has developed its SNQ support bearings to mitigate this problem at the power station.

The SNQ support bearings will, unlike standard support bearings, enable the replacement of the entire bearing, says Steinhobel.

“We believe that, with our product, Eskom’s bearings consumption will be reduced dramatically, which we believe currently amounts to about 15 to 20 bearings a year for Arnot.”

Sekela Bearings has approached the power utility with this solution, but says the utility has not shown an interest in buying the product.

Eskom denies that the utility is wasteful in terms of bearing consumption at the Arnot power station.

“There are 72 seal-air fan bearings in service at Arnot power station. During the last year, the station only had three failures. The bearing replacement cost was R23 000 and the replacement time was about three hours for each incident. These failures had no impact on production, as the spare mill was put in service,” the utility states.

Meanwhile, Steinhobel says Sekela Bearings also offers a type of bearing, which was used in the Grootvlei power station, in Mpumalanga, before it was mothballed in 1989/90


The six units at the Grootvlei power station were mothballed between 1989 and 1990, owing to surplus electricity generation capacity in South Africa; however, its six 200 MW units were demothballed by the end of 2011 as part of Eskom’s return-to-service projects.

“When Eskom closed the Grootvlei power station, it sold off all the spares. I have managed to get my hands on some of the bearing spares.”

Steinhobel claims that one of the spares was specially made for the Grootvlei power station and is not manufactured anywhere else in the world. It is used in the Rothemühle air heater of the power station.

“We believe that the bearings currently in service at Grootvlei have been patched and are damaged.”

Eskom also denies this claim, saying that, while the utility may sometimes switch parts between power stations to save costs, it ensures that all power station components are well maintained.

In January 2011, Eskom launched its quarterly State of the Power System briefings, in line with its commitment to keep stakeholders informed about the state of South Africa’s power system


Public Enterprises Minister Malusi Gigaba said, in February, that the utility had a highly developed maintenance policy designed to ensure that areas at risk are dealt with in order of priority through a consistent schedule of maintenance and inspection work across its fleet of power stations.

Edited by: Chanel de Bruyn
© Reuse this Comment Guidelines (150 word limit)
 
 
 
 
 
 
 
 
Other Eskom News
BE Lite Technologies manufactures and distributes light-emitting diode (LED) lights and employs a dynamic engineer who is able to develop custom-designed lights. The company currently provides a number of products for the mining industry, but aims to become more...
GAME PLAN Eskom's strategic focus points could include ensuring the viability of projects before commissioning and ensuring their completion on time and within budget
Power utilities need to master the act of balancing scheduled and unscheduled maintenance, says global growth consulting firm Frost & Sullivan. Programme manager for energy and environment, Johan Muller, adds that maintenance can be managed, provided a utility’s...
HOLISTIC OFFERING Structa’s subsidiaries provided significant quality, sufficient capacity and a quick production turnaround on the Kusile and Medupi flue ducting
Steel products and related services company Structa Group’s manufacturing, machining and refurbishment services subsidiaries Turnmill Proquip Engineering and One Steel Engineering are supplying flue-ducting material to State-owned power utility Eskom’s Kusile power...
More
 
 
Latest News
Updated 9 minutes ago In this context Creamer Media’s Gold 2015 report reviews the global gold market and gold companies that have operations in Africa. It particularly focuses on the South African gold sector, including labour issues and electricity shortages, as well as prospects for...
Updated 1 hour 18 minutes ago The first of a total of 40 Cuban engineers have arrived in the Free State on Sunday, with the rest expected to arrive on Monday. They will mainly be involved in improving service delivery, the construction of government subsidised settlements, houses, the provision...
The new Hilux
Updated 1 hour 41 minutes ago Toyota has lifted the veil on its new, eighth-generation Hilux bakkie, set to launch in South Africa in the first quarter next year. Sales have already started in Thailand.
More
 
 
Recent Research Reports
Steel 2015: A review of South Africa's steel sector (PDF Report)
Creamer Media’s Steel 2015 report provides an overview of the key developments in the global steel industry and particularly of South Africa’s steel sector over the past year, including details of production and consumption, as well as the country's primary carbon...
Projects in Progress 2015 - First Edition (PDF Report)
In fact, this edition of Creamer Media’s Projects in Progress 2015 supplement tracks developments taking place under the Renewable Energy Independent Power Producer Procurement Programme, which has had four bidding rounds. It appears to remain a shining light on the...
Electricity 2015: A review of South Africa's electricity sector (PDF Report)
Creamer Media’s Electricity 2015 report provides an overview of State-owned power utility Eskom and independent power producers, as well as electricity planning, transmission, distribution and the theft thereof, besides other issues.
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.
 
 
 
 
 
This Week's Magazine
While economic forecasts for the African continent are most favourable, African airlines may not be able to benefit from the expected growth in the region’s gross domestic product (GDP), International Air Transport Association VP: Africa Raphael Kuuchi has warned....
The Automotive Production and Development Programme (APDP) will need to change substantially post 2020, says Metair Investments South African operations COO Ken Lello. “We must not make tweaks. We have to change. What we are doing is not sustainable.”
Banking group Absa’s forecast is for the rand to end the year at around R13 against the dollar, weakening further to R13.50 by 2016, says Absa sectoral analyst Jacques du Toit. He warns that possible interest rate hikes in the US may see capital being pulled from...
The Dispute Resolution Centre at the Bargaining Council for the Civil Engineering Industry (BCCEI) is now open to handle party-to-party disputes. The BCCEI represents the interests of all level four to nine Construction Industry Development Board companies.
FREDRIK JEJDLING Sustainability becomes an important part of a business’ decision-making process
Communications technology firm Ericsson sub-Saharan Africa head Fredrik Jejdling says the company’s commitment to sustainability and corporate responsibility has been integrated into all facets of its operations, which has provided it with sustainable revenue...
 
 
 
 
 
 
 
 
 
Alert Close
Embed Code Close
content
Research Reports Close
Research Reports are a product of the
Research Channel Africa. Reports can be bought individually or you can gain full access to all reports as part of a Research Channel Africa subscription.
Find Out More Buy Report
 
 
Close
Engineering News
Completely Re-Engineered
Experience it now. Click here
*website to launch in a few weeks
Subscribe Now for $96 Close
Subscribe Now for $96