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Filtering by Category: 12/2017

Rosond achieves one year zero harm at drilling sites

Drill Safe

 
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Media statement issued on behalf of ROSOND, by StoneSoup Public Relations

Several drilling sites operated by Rosond have successfully achieved a full year of ‘zero harm’. Rosond employs more than 1600 people who work under physically demanding and risky conditions. This safety achievement bolsters the successful implementation of Rosond’s health and safety processes by management and employees. 

The following sites; Anglo American Platinum’s Dishaba and Tumela mines in Limpopo; Harmony’s Elandsrand mine in the North West; Impala Platinum's Impala mine in the North West; Royal Bafokeng Platinum’s Rasimone mine in the North West; Anglo Gold Ashanti’s Mponeng mine in the North West; Gold Field’s South Deep mine in Gauteng; Sibanye Platinum’s Khusuleka mine in the North West and Geotech sites in various provinces under Ivanhoe Mines, Bakubung, Sibanye Gold, Exxaro Coal and Royal Bafokeng Platinum - were injury free over the past financial year from 1 October 2016 to 30 September 2017. 

The Rosond group ended the year with an LTI frequency rate of 0,2, which is outstanding. 

Ricardo Cravo Ribeiro, Operations Director at Rosond says, “We are extremely happy with our safety achievements. We have a zero harm policy, so it is our responsibility to make sure that our employees’ health and safety needs are put into place and adhered to."

Rosond’s management compiled a Safety, Health and Environmental (SHE) policy with specific objectives, which are incorporated into legislation and client requirements. "We implemented a safety management system which we audit on a regular basis and make necessary changes if need be. We also have six Chief Safety Officers in six different areas with safety officers under their responsibility to govern the safety management system," adds Ricardo. 

Compulsory safety training is offered to all employees when doing induction at the mines. André Kleynhans, Rosond Safety Manager comments, “Our training is risk based; pointing out all hazards associated with our operations. Our training techniques are more or less the same for each operation but also dependant on the client’s requirements. We train our employees regularly and in situations where an accident happens a special post-accident training is conducted. Our aim is that our employees get the technical ability to do their job in a safe manner. We also emphasise the notion of my brother’s keeper, so that everyone looks out for each other."

“Along with safety training, we engineer out hazards through engineering innovation. Our procedures are very simple and easy to understand. We continuously motivate our teams and our quarterly safety drives have also proven to be a success."

In conclusion, Ricardo highlights the impact these safety achievements have on their clients. “Achieving zero harm at our sites is a big deal as fatalities in the mining industry are reported regularly. Zero harm means we are at the peak of our industry and that’s what clients look for. Our safety records reflect positively to our clients which reassures them that we are the right company to do business with."

About ROSOND

ROSOND is active in surface and underground mining development and exploration drilling, cementation works and pre-cementation of shafts, as well as grout pack support systems. In 1956, multinational company RODIO started servicing southern Africa’s mining and civil engineering industries. RODIO created ROSOND to become RODIO/ROSOND, which established a niche presence in the market and introduced many original cementation techniques used for geotechnical purposes. These included high shear, high-speed mixing and equipment for the grouting of cement and the long-range pumping of cement slurries. In 1991, the international RODIO group was sold, becoming an independent company owned by Swiss-based GEOSOND Holdings. In 2011 ROSOND management bought the South African operation from Geosond, which included a 25 +1% empowerment deal. 

In 2014 the ROSOND group expanded to Mozambique to service the mining and civil industries. ROSOND has serviced most of South Africa’s blue chip mining houses, expanding its operations over several decades.

Professional tips

Drill Safe

 
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professional tip

Wireline drill rods are very thin walled so be careful when handling wireline drill rods to ensure that the threaded ends are not scratched during use or during loading and off-loading.

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professional tip

It's important not to mix MBI drill rods and adapters with those from other manufacturers.

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professional tip

Before re-running a drill rod, make sure that each threaded end has a light coating of quality thread grease.


Watch our promotional video to see the products and services MBI provides.


Top tips to prevent drill rod pipe incidents

Drill Safe

 
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AMC’s top tips to prevent incidents around the drill rod pipe

Drillers missing a finger or two have always been a common occurrence in our industry. 90% of these incidents take place around the drill rod pipe due to just a few common processes:

  • during rod insertion or extraction
  • retrieval or displacement of the inner tube
  • when applying drill rod and thread grease directly to the stands while the rods are in the foot clamp / gripper-box, while being held stagnant through the rotational head / drill chuck or by the hoisting cable

When drill rods are not handled effectively then drillers are at risk from; crushing, repetitive strain and manual handling injuries. Accidents like these cause pain for the victim and potential lifelong injury’s, with lost time also heavily impacting operations that may already be under pressure.

Drill rod grease is still one of the traditional and most cost-effective solutions to reduce severe rod vibration and high downhole torque conditions that can create undesirable problems and reduced Rate of Penetration (ROP). The most common problems are:

  • breakages in the rod line that will follow with a the retrieval of the broken pipe
  • general wear-and-tear and reduced rod life
  • hole deviation
  • weakened thread joints
  • additional stress and higher workload requirements for the drill rig mechanics, hydraulic components and main engine
  • separated casing to cause problems down the hole

A lot of drilling contractors and resource companies come to us questioning the value of using lubricants and rod greases. However these products are vital to the reduction of rod tripping and can be the necessary safeguard against major manual handling issues, particularly as most of these accidents occur at depth.

AMC’s aim is to eliminate or reduce the overall use of drill rod grease, incidental risks, loss in production time and wear on downhole drill equipment. The company’s approach is to focus on overall improvement in safety and productivity, with high quality drilling fluids, better workflows and technology innovations such as the AMC BOS™ can provide better hole stability and water return without disrupting operational flow.

Our approach for better, safer greasing

One shortfall of modern day exploration rig designs is the ability to apply any form of grease through an automated system. An automated thread greasing system has had a long history in operations on production drilling machines drastically reducing manual handling as well as the presence of hands around the rotational and clamping mechanism of a drilling rig.

Regardless of this, the use of greases in the exploration drilling industry is a must, especially in dry hole conditions caused by downhole loss of fluid return and angled / wedged holes. In Africa, there are very few standard operational procedures or methods of application when applying grease.

AMC has a few key guidelines to follow:

1. Most of the time the drillers over grease the rod surface, causing the excess grease to collect  around the drill collar or in the ground pits forming a floating mattress of grease on the water surface. The company suggests the following guideline for the required amount of grease per rod diameter.

For dry hole conditions use:

 

 

 

More information is in each of our Product Data Sheets.

2.  If your operational design allows for the rods to be stored or stacked on a rod rack of rod sloop, the recommendation is to  grease the pipe whilst being in this horizontal position

3. Try to apply the required rod grease to only half of the total circumference for the rod line. This practise will ensure that the total rod surface is not covered with grease. If the full rod surface is covered, downhole problems like high displacement pressure will be experienced as the drilling fluid will struggle to make their way up the annulus past the grease. Also limit mud use for the first one to two runs to prevent  the stripping of grease

4. AMC’s latest  innovation, the AMC BOS™ can also be an effective and preventative measure against borehole torque, making a positive impact on ROP, on-site safety and component life. Regular injections of AMC BOS FIX™ to the bottom of the drill string and up the annulus continually seals natural fractures and fissures, to stabilise the borehole, reduce downhole losses and occurrence of lost circulation.

What rod grease to use?

AMC has a range of economic, long-term adhering and environmentally acceptable greases to reduce friction and assist in extreme downhole environments, such as high pressure and temperature conditions. 

Designed in Africa for our clients, AMC GORILLA GRIP is a specially formulated, tenacious, barium-based grease recommended for use on diamond drill rods to reduce vibration and friction between the rod and casing or rock strata. This product is designed for performance in a variety of harsh conditions, including bad water conditions, high pressure and high temperatures. It’s superior adhesion characteristics make it easy to apply to the rod under virtually any condition with minimal wastage.

Many operators prefer to use a liquid rod grease, where there is no requirement to pull the rods to grease. AMC LIQUID ROD GREASE™ has the ability to adhere to the formation and the steel rods to dramatically improve lubrication and reduce rotational pressure and torque. This product is non-toxic, environmentally acceptable and easy to apply.

The company is continuously improving their product line and testing their capabilities. Visit the AMC website for the full list of lubricants and greases available in your region.

The new, proactive method against torque

To manage and reduce borehole torque, traditionally a driller will manually apply rod grease to the drill string at intervals (requiring regular rod trips causing time loss, component wear and increased manual handling) or to introduce a liquid rod grease (which is generally more expensive as a product but reduces rig down time).

Using grease is vital, but borehole torque is largely affected by downhole conditions, which can vary at any time. Down the borehole you can’t always predict when or how things will go wrong, so we developed our Borehole Optimisation System (AMC BOS™), a system that anticipates fluid loss, high torque and unstable zones, even in high pressure, high temperature, wet or dry environments.

The AMC BOS™ creates a thin, robust lubristic membrane to target and control excessive torque and reduce rod vibration or chatter. Unlike traditional reactive methods (such as liquid rod greases or casing), the AMC BOS™ is a preventative measure which can significantly improve diamond drilling productivity, at rig safety, reduce environmental impact and lower overall operational costs.  The unit takes less than 5 minutes to set up or refill, which can be done at any time during the drill shift, without interruption.

   
  
    
  
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  Waroonga Underground Mine and New Holland Underground Mine Case Study

Waroonga Underground Mine and New Holland Underground Mine Case Study

A recent trial of the AMC BOS™ and new AMC BREAKOUT THREAD GREASE™ at Waroonga Underground Mine & New Holland Underground Mine in Western Australia showed  significant results in reducing downhole torque and minimising rod handling.

AMC BREAKOUT THREAD GREASE™ was run where excessive rod torque had been encountered and subsequently rods were stalled.  When breaking out the rod string, no hammers were required to decouple nor were additional Stilson’s required. All threads showed residual levels of AMC BREAKOUT THREAD GREASE™. The product was easy to apply and held on the threads well.

Targeted shots of AMC BOS FIX™ reduced downhole problems and stabilised water pressures while drilling. No indications of the previous pressurisation and hydraulic lock issues were seen after the introduction of the AMC BOS™. The entire formation became much more stable than the drill crews had previously encountered. 

For more information

More information about the AMC BOS™ and our greases and lubricants can be found at our website www.amcmud.com.

 

A leap forward in the underground exploration drilling industry

Drill Safe

 
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Master Drilling makes a leap forward in underground exploration drilling by acquiring the first               Boart Longyear™ state-of-the-art LM™30 Skid Steer in South Africa!

Written by W.C. Olivier

Master Drilling recently acquired the first, state of the art, Boart Longyear™ LM™30 Skid Steer (LM30SS) in South Africa. Boart Longyear a leader in design, development and manufacturing of products for mining and drilling unveiled the LM30SS unit in South Africa for the first time last week. 

The LM30SS drill unit is a compact, mobile and self-driven drill with components which ensures rapid setup, movement between drilling sites and means the drill rig doesn’t require an external electrical supply. Master Drilling’s underground operations manager Mr. Ben Legransie states that the mobility, rapid setup and overall self-reliance of the LM30 ensures efficient and continuous operations as there are less time delays when the drill rig is moved from one site to another, especially in the underground mining environment.

Master Drilling's senior SHERQ officer, Mr T. Booysen, at the first demonstration of the LM30SS in South Africa.

Master Drilling's senior SHERQ officer, Mr T. Booysen, at the first demonstration of the LM30SS in South Africa.

The LM30 drill rig mounted on a CAT 246D Skid Steer with all systems powered by the CAT’s  diesel engine. The LM30SS is capable of drilling at various angles from vertically downward to vertically upward at B, N and H sizes at depths of 310m, 180m and 80m respectively. Therefore, this rig provides the capabilities required for most underground exploration drilling applications. 

The LM30 does not only provide great mobility and rapid setup but also improves safety with a remote control panel allowing for rig operation at a safe distance, guarding of all moving parts and machine cut-off switches on all guarding. The LM30SS also has various dead man switches both when operating the CAT Skid Steer and drilling unit.

Mr. Trevor Booysen, senior safety officer from Master Drilling’s  exploration division, states the drill rig will significantly reduce the likelihood of incidents in general as there is no need for cumbersome loading and pining of the machine that reduces the need for manual handling and subsequent risk for especially hand injuries. The machine also has an automatic rod breakout system which further reduces the risk of hand injuries and fatigue related risks through decreased material handling. Master Drilling strives to optimise technological and adhere to the global demand for safer machines that optimises productivity and decreases workplace incidents and injuries.

Master Drilling believes this drilling unit is a large leap forward in rapid movement and setup technologies especially in the underground drilling environment. The time saving advantages will be carried over to clients who require geological information quickly in order to make real time mining decisions in order to maximise mining efficiencies.

Choose the best core cutter for your project

Drill Safe

 
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Historically the cutting of core was very much a hands on operation. Even though very few injuries were reported  (the risk is more a pinch point than a cut),  it became obvious that it was a high risk situation. 

Manufacturers then began to look at removing the “hands on” factor in the core cutting operation. Machines were developed using core holders, covered core blades etc. 

Other areas of safety surrounding the core cutting environment were also addressed such as noise, dust, removing the manual feed issues (pushing too hard and overloading motors/blades), etc. Units were developed with voltmeters to monitor load on the blade/motor, automatic feed and blade speeds , silent centre blade, improved water feed, settling tanks etc.

The result is a range of core splitters available in the market today, from an entry level mobile manual unit using core holders to the fully automatic, enclosed, units for larger projects.

Price,  productivity and blade life increase up the range so it is important to match the correct machine to your safety requirements, metres being cut, rock type being cut etc.

Learn more about the Automatic (Senior) Core Saw 380 Volt Model

Learn more about the Manual core splitter: FH 711

Please contact us should you have any questions or need guidance regarding the ideal machine for your project. 

Innovative CORE REMOVAL TOOL

Drill Safe

 
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Using the REFLEX CORE REMOVAL TOOL™ in the extraction process means the drill crew no longer need to strike the core with hammers or other hard objects in order to release it from the core lifter case. Protecting the ends of the core sample from impact damage will result in the ability to join the ends together with greater confidence in the accuracy of the logging process. Use of the REFLEX CORE REMOVAL TOOL™ protects the core orientation markings significantly.

NQ Rods 1-3 kg per 100m
HQ Rods 2-4 kg per 100m
PQ Rods 3-5 kg per 100m