http://www.engineeringnews.co.za
  SEARCH
Login
R/€ = 16.31Change: -16.14
R/$ = 14.22Change: -14.07
Au 1292.99 $/ozChange: 1.84
Pt 1079.50 $/ozChange: 3.50
 
 
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 About Us
 
 
 
RSS Feed
Article   Comments   Other News   Research   Magazine  
 
 
Aug 03, 2012

Rubber company develops new pressure vessel lining method

Back
1st Wear Corrosion Protection Rubber|Africa|Building|Business|Design|Technology|Testing|Africa|Australia|Germany|South Africa|The Netherlands|Chemicals|Cured Rubber|Metal|Metal Fatigue|Products|Rubber|Rubber-lining Pressure Vessels|Uncured Rubber|Andre Van Rooyen|Required Technology
Africa|Building|Business|Design|Technology|Testing|Africa||Products|Rubber|||
1st-wear-corrosion-protection-rubber|africa-company|building|business|design|technology|testing|africa|australia-country|germany|south-africa|the-netherlands|chemicals|cured-rubber|metal|metal-fatigue|products|rubber|rubber-lining-pressure-vessels|uncured-rubber|andre-van-rooyen|required-technology-technology



Rubber company 1st Wear Corrosion Protection Rubber and Paint (WCP Rubber) MD Andre van Rooyen says he has developed a new method for rubber-lining pressure vessels and plans to expand the use of this method in South Africa.

The method involves putting uncured rubber into the vessel and using the vessel as the curing unit, as opposed to using rubber that has already been cured, or putting the vessel in an autoclave to cure the rubber.

“Uncured rubber is soft and pliable, making it easy to work with and to mould it to the shape of the vessel, as opposed to cured materials, which often require the use of elastomeric fillers at joints.

“Using the vessel as the curing unit has many advan-tages. The rubber bonds better to the metal and forms perfectly to the shape of the vessel, which is important when the vessel is used to hold chemicals that will corrode the metal,” says Van Rooyen.

Other advantages are that uncured rubber is cheaper than cured rubber and, owing to the better bonding properties of the rubber, less repairs are needed. This can also potentially extend customers’ guarantees.

The method was applied successfully to a pressure vessel for an Australian company, which is using the vessel as an acid washing column, in December last year.

“It took me about a month to carry out the tests and ensure this method was possible. I suggested it to the customer. The company was satisfied, so much so that we will soon be lining a second vessel, using the same method.

“The second vessel is in the design phase and should be delivered to us at the end of this year or early in 2013,” says Van Rooyen.

He is hoping to increase awareness of this new method in South Africa, as it will ben-efit businesses that use vessels.

Challenges

Although the method is suc-cessful, Van Rooyen says there were challenges during the development phase.

“Laws on the use of pressure vessels in the country have become more stringent in the last five years, so much so that a swimming pool pump is now considered a pressure vessel.

“We have government-approved inspection auth-orities (AIAs), which have to certify a vessel and provide a government plate for it before it can be used. If a pressure vessel does not have a manufacturer’s plate on it, you will have to redesign and recalculate that vessel, with an AIA as a wit- ness, as well as with a design engineer to do the recalcula-tions,” he explains.

He adds that redesigning a pressure vessel entails the design engineer doing detailed drawings of the vessel, material identification and X-rays on all welds.

“This can cost anything from R75 000, just for the design engineer’s part of the job. The result is that many vessels are used illegally in the country, which can be potentially dangerous.

“So the method becomes tricky on older vessels, as they will need to be redesigned and recalculated. Factors like metal fatigue and corrosion also have to be taken into consideration when working with older vessels,” says Van Rooyen.

He does not believe in throwing away or destroying older vessels.

“They should be recalculated and downgraded to work at a lower pressure, but many people and inspectors do not know that this can be done.

“We do it all the time at WCP Rubber. We have a vessel that had been manufactured in 1966 that is still fully operational after we downgraded it to work at a pressure of 8.5 bar instead of its designed 10 bar,” he notes.

Another challenge is that many well-qualified professionals in the industry have emigrated to countries like Australia. The few who are left, he says, demand high salaries that rubber lining companies often do not have the budget for.

Van Rooyen believes developing new methods is a way for South Africa to compete with the world.

“Africa has some of the best raw materials and minerals in the world, readily available at all times. We also have the required technology; however, our ability to produce innovative products is hampered by our high labour costs and lack of experts.

“If we use our materials and technology to our advantage, we can fulfill our potential and attract more business to our shores. “This will mean more money and economic growth for the country, as well as fewer strikes and fewer unhappy workers,” he says.

Future Plans

Van Rooyen plans to introduce another new development that he believes will transform the rubber industry.

“I have contacted some people in Holland and Switzer-land, as I plan to develop a way in which a building can be used as a curing unit. “It will be something similar to a bunker that is able to withstand enough pressure to be used as an autoclave. “This would mean any piece of machinery could be rubber-lined and cured,” he says.

He notes that this has been attempted once before in the early 1940s, in Germany, but a conclusion was never drawn and the attempt was unsuccessful.

“I believe it is very possible and it will open doors for the rubber industry. “We may have the funds available to purchase a factory or building of some kind in the future and will hopefully be testing this then,” states Van Rooyen.

 

Edited by: Chanel de Bruyn
Creamer Media Senior Deputy Editor Online

To subscribe email subscriptions@creamermedia.co.za or click here
To advertise email advertising@creamermedia.co.za or click here
 
Comment Guidelines (150 word limit)
 
 
 
 
 
 
 
 
Other Vessels, Heat Exchangers, Tanks and Containers News
ANNOUNCEMENTS RAISE CONCERN GRI announcements allow carriers to explore each other's pricing intentions and coordinate their behaviour
The European Commission announced its concerns that container liner shipping companies' practice of publishing their future price increase intentions may harm competition and customers by raising prices for their services to and from Europe, in breach of the European...
MARKET DEMAND TO INCREASE A large number of emerging manufacturers is expected to drive the heat exchanger market in future
India-based market research company Markets and Markets (M&M) predict that the heat exchanger market will be worth $21.08-million by 2019 owing to demand increase from Europe and Asia. The exchanger market report conducted by M&M is based on heat exchanger types such...
INTEGRAL PLANT COMPONENTS Shell and tube heat exchangers are particularly prevalent in Rankine cycle power generation with regeneration, as used in most modern power stations
Local manufacturer and maintenance service provider of utility-scale pulverised coal steam generators, Steinmüller Africa, is now offering turnkey solutions for both shell and tube heat exchangers; both the header-type and the tubesheet-type are offered. These heat...
More
 
 
Latest News
Environmental Affairs Minister Edna Molewa
Cabinet has extended the contract of Department of Environmental Affairs (DEA) director-general Nosipho Ngcaba and approved the appointment of Limpho Makotoko as the new DEA COO.     “Under the leadership of Ngcaba, the DEA has consistently received clean and...
Mzwandile Masina
The Department of Trade and Industry (DTI) has invited companies to participate in a trade and investment mission to Ghana and Nigeria from August 8 to 12.   Companies in the agriculture and agroprocessing sectors, built environment professionals, automotive and...
Cabinet has approved the Industrial Policy Action Plan (Ipap) 2016/17 to 2018/19, which seeks to achieve a higher-impact industrial policy in difficult economic circumstances, including the difficulties faced by the domestic steel industry and the drought which has...
More
 
 
Recent Research Reports
Automotive 2016: A review of South Africa's automotive sector (PDF Report)
Creamer Media’s Automotive 2016 Report provides an overview of South Africa’s automotive industry over the past 12 months. The report provides insight into local demand and production, vehicle imports and exports, investment and competitiveness in the sector, as well...
Energy Roundup – April 2016 (PDF Report)
The April 2016 roundup covers activities across South Africa for March 2016 and includes details of a North Gauteng High Court Judge’s dismissal of a court application to postpone the 9.4% electricity tariff increase, which the National Energy Regulator of South...
Electricity 2016: A review of South Africa's electricity sector (PDF Report)
Creamer Media’s Electricity 2016 report provides an overview of South Africa’s electricity sector, focusing on State-owned power utility Eskom and independent power producers, electricity planning, transmission, distribution and the theft thereof, besides other issues.
Energy Roundup – March 2016 (PDF Report)
The March 2016 roundup covers activities across South Africa for February 2016 and includes details of the Department of Energy’s plans to announce the preferred bidders for the first tranche of the coal independent power producer procurement programme; the Council...
Steel 2016: A review of South Africa's steel sector (PDF Report)
Creamer Media’s Steel 2016 Report examines South Africa’s steel industry over the past 12 months. The report provides insight into the global steel market and and particularly into South South Africa’s steel sector, including production and consumption, main...
Construction 2016: A review of South Africa's construction industry (PDF Report)
Creamer Media’s Construction 2016 Report examines South Africa’s construction industry over the past 12 months. The report provides insight into the business environment; key participants; local demand; geographic diversification; corporate activity; black economic...
 
 
 
 
 
This Week's Magazine
The two spent-fuel pools at Eskom’s 1 800 MW Koeberg nuclear power station, in the Western Cape, will be full by 2018, increasing the urgency on the State-owned utility to begin pursuing alternative storage options. Koeberg has, over the past 32 years, accumulated a...
South Africa lacks the skills necessary to implement the government’s plan to build 9.6 GWe of new nuclear energy capacity, warns nuclear-qualified Quality Strategies International CEO David Crawford. “Apart from the concern about the affordability of the programme,...
DOROS HADJIZENONOS The 700-series devices provide network security monitoring, app control, URL filtering, VPN security, antivirus, antispam, antibot, and advanced intrusion prevention and detection functionality
Cybersecurity multinational Check Point has released its latest 700-series cybersecurity systems for small businesses, which draw on its international threat intelligence to provide up-to-date cybersecurity, says Check Point South Africa country manager Doros...
Daimler Trucks and Buses Southern Africa (DTBSA) saw a marked slip in new-vehicle sales in 2015 compared with 2014, with sales dropping from 5 897 units to 5 300 units. The decline came as the South African new truck and bus market declined from 31 558 units in 2014...
Group of 20 (G-20) economies threatened to penalise havens that don’t share information on their banking clients after the leak of the Panama Papers provoked a global uproar over tax evasion. The G-20 will consider “defensive measures” against financial centers and...
 
 
 
 
 
 
 
 
 
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 $149 Close
Subscribe Now for $149