SASTT contact details:

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1 SASTT contact details: Web: President: Andries Lötz Tel: (011) Fax: (011) Honorary director: Joop van Wamelen Tel: (012) Fax:

2 SASTT No-Dig India Summit 2012 The International Society for Trenchless Technology (ISTT) has announced that No-Dig India Summit 2012 is to be held in Bangalore, 14 to 15 May this year. THE EVENT is one of a series of regional education and training events organised by ISTT. The conference features the ISTT Trenchless Masterclass a programme of presentations by international experts Dr Samuel Ariaratnam and Dr Dec Downey, who will share their expertise on a broad range of trenchless installation and repair techniques. The programme will also include practical examples of case studies to complement the masterclass topics. India s programmes to modernise its underground utility systems present exciting opportunities for the trenchless industry to introduce new products and techniques in this rapidly expanding market, comments Ariaratnam, chairman of ISTT. The masterclass programmes have been extremely well received in other countries and we are looking forward to presenting to a new audience in India where early indications suggest that a top-quality educational programme will be welcomed. No-dig India Summit 2012 is organised on behalf of ISTT by UK-based Westrade Group Ltd. For more information visit IMIESA APRIL Asset management data collection - Conditional pipe assessment - GIS mapping - CCTV pipe inspections Call : Durban: Cape Town: Web : - Sonar pipe Inspections info@camjet.co.za - High pressure Jetting - Intrusion Cutting For those who want to see what lies beneath.

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4 SASTT SWAGELINING Pipeline technology popular in Africa Over the past couple of years, the Rare Group has undertaken numerous Swagelining projects for the mining sector across the continent. MINES IN AFRICA have limited resources in terms of reliable local service companies, so they often make use of South African companies that happen to be on site and have the necessary skills and equipment to help out with engineering problems beyond the scope of the work they re there to do in the first place. Rare Congo, our affiliate company at Kolwezi, explains Van Coller. Swagelining technology is used for corrosion prevention and life extension of new and existing pipelines used in a range of industry applications, such as mining slurry, gas, potable water, sewage, water injection, crude oil, cement and chemicals. The aim is to maximise pulling lengths, which leads to reduced numbers of connections and excavations Looking down a 870 m section of rehabilitated pipeline Our involvement in Africa began when we installed a new Swagelining slurry pipeline at a mine near Kolwezi just over a year ago, says Rare operations director Wally van Coller. Mine management was so satisfied with the service they got from us that they asked us to do a couple of other small jobs since we had the people and equipment on site. This rapidly escalated into bigger projects and today we have over 100 people employed at The Swagelining system is the insertion of liners into pipelines of up to 60 (1.52 m) in diameter for structural and non-structural applications. It works by installing a tight-fitting polymer liner into new or existing pipelines by designing and constructing a liner that has an outside diameter slightly larger than the inside diameter of the pipe to be lined. The aim is to maximise pulling lengths, which in turn leads to reduced numbers of connections and excavations. The Swagelining technique uses a naturally reverting recovery system after installation. The liner is installed into a host pipe by pulling it through a reduction die using a winch, which temporarily reduces its diameter, allowing for easy installation. Once it is pulled completely through the pipe, the pulling force is removed and the liner returns to its original diameter, pressing tightly IMIESA APRIL EXTENDING THE FRONTIERS IN POLYMER LINING APPLICATIONS IN CHALLENGING ENVIRONMENTS SWAG LINING TM Swagelining is an interactive tight fitting HDPE liner extending the service life of pressure pipes and is suitable for the rehabilitation of: Sewer Pumping Mains Water Distribution Mains Petrochemical & Gas pipelines Mine Tailings pipelines Tel: info@rare.co.za

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6 SASTT against the inside wall of the host pipe. The tight-fitting polymer liner results in a flow capacity close to that of the original pipeline. The Swagelining system uses high-density polyethylene liners (HDPE), which offer a range of benefits to the mining industry with regard to asset integrity. The polymer is highly resistant to abrasion, which increases the lifespan of the pipeline. The smooth surface of the polymer liner decreases resistance, which reduces the overall power consumption required to run the pipe. By rehabilitating existing corroded surface, as well as pipe rehabilitation, is mostly undertaken with Swagelining technology, a method of lining steel pipe with a HDPE liner to extend pipe life far beyond steel pipe s normal life expectancy, especially in the case of slurries. We have the sole right in Africa to this British technology, says Van Coller. Originally, it was developed to rehabilitate leaking cast iron gas piping in England. Today we use Swagelining technology on all types of applications where corrosion and abrasion impacts dramatically This lining with its lower friction improves flow, which in turn reduces the power requirement Pipeling rehabilitation under way pipelines with structural liners, the liner can take the working pressure off the pipe. This can result in significant cost savings and operational efficiencies for the pipeline operator. Naturally, these projects are more than just pipes and pipelines, adds Van Coller. Besides partnering with a local company which does the civil work, we had to tap from our in-house experience or employ people who could do the work required. For example, we ve just completed a large ore-pass 500 m underground for this opencast copper mine, which also has an underground shaft. Although this was outside the scope of our usual work, we simply employed people who could design and install the civils, wear linings and conveyors systems to complete the job in seven months a third of the time that a previous contractor took to build an ore pass. New pipeline work, installed above or below on pipe life. The traditional method of rehabilitating a pipeline is to dig it up and replace it, which incurs a major expense and is extremely difficult in the case of old pipe that may now run under built-up areas. Depending on the condition of the pipeline we can either use the Swagelining process or the CIPP (cured in place pipe) process to re-line the inside of the pipe to extend the pipeline life another lifetime, explains Van Coller. The Swagelining process applies tight fit or interference fit HDPE liner inside the pipe in situ to protect it from further corrosion while cathodic protection will protect the outside. This lining with its lower friction improves flow, which in turn reduces the power requirement from the pumping side. We ve just completed a 900 mm diameter concrete sewerage pipeline in Port Elizabeth, but CIPP technology can also be used to fix leaking steel, asbestos and fibreglass water pipelines, adds Van Coller. The CIPP process is mainly for larger diameter pipe and consists of a process where a sock of special needle-punched polyester material soaked with tailor-made resins is pulled through the pipe, followed by either hot water or steam to cure the resin in the sock to form a new liner. These liners can also structurally restore the original pipe. All these technologies are brought to customers through a total cost of ownership scheme, which the Rare Group calls the Xtender management programme. Our business model is unique in that we not only supply all the equipment you need to get water from the dam to the tap in your home, but we ve introduced several technologies to rehabilitate systems cost-effectively, states Van Coller. IMIESA APRIL Trenchless Technology Specialists Our range of services include: Pipe Bursting Horizontal Directional Drilling Pipe Rehabilitation Slip Lining Pipe R ming CCTV Inspection Dewatering Industrial Pipe Cleaning HDPE Welding Deep Excavation and Shoring Underground Service Detection Close-fit lining: COMPACT PIPE For more information you can contact us: +27 (0) F +27 (0) E info@tt-innovations.co.za

7 metres of TRENCHLESS PIPE Successfully Installed RENOVATE EXISTING PIPES BY: INSTALLATION OF NEW PIPES BY: Countrywide