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Hi Greg The engine used on the drill rig is a QCC industrial engine (cummins) 280 BHP (209kW) @ 2200 RPM. The engine is running at a duty cycle of around 90%. Please note that both TIER 2 & TIER 3 engines are running exactly within the same application. The duty requirements has thus...

Good Day All It will be appreciated if anyone could shed some light on a specific problem I am currently experiencing with the fuel consumption of TIER 3 engines as opposed to TIER 2 type engines. I operate a number of drill rigs within the mining industry in South Africa and with the...

I have been told by the OEM's that fuel dilution in the oil to within certain specified limits is acceptable. Any comments as to what you believe these acceptable limits should be and what the possible consequences of excessive fuel dilution could be. Ken

Hi Chaps Thanks for your response. I thank you for your valuable input. The problem I am faced with is, the fact that when we experience engine, transmission failiures etc. we do not generally ascertain the root cause of the problem in the first place. I attribute this to a lack of skill and...

Good Day Gents I will really appreciate any feedback with regards the following. We carry out frequent diesel engine overhauls ourselves. We have quite a large fleet of earthmoving equipment which we utilise in the mining industry. My problem however, is the fact that basically every repair...

Good Day All I would really appreciate any comments with regards the following issue. I am currently experiencing a high incidence of drivetrain related failures on one of our mining operations in South Africa. I have noticed that we are also overloading our trucks by up to 20%. I would...

Good Day Gentleman It would be appreciated if any of you could please indicate any contact persons or institutions with respect to the development and implementation of Equipment Maintenance Strategies for mobile equipment. I have achieved a reasonable amount of experience in this regard, but...

It would be appreciated if anyone could please direct me to any online papers or info specifically relating to the design of pumping and piping stations specifically for slurry applications. Regards

Hi MacMil Thanks for your response. The Technical specifications are as follows: 350 Tons/Hr. Pipe Module Technical Report Code : PQ2003/280 SG = 1.38 Flow Rate 161.32 l/sec Suction height 1.00 m Discharge height 61.00 m Discharge pressure 0.00 kPa Pipe...

Good Day All It would be appreciated if you could provide any assistance or insight to my application problem. I am attempting to convey a -20mm stone by means of a pumping system from the source to the process plant. The slurry will be pumped over a distance of about 1000m. I have had a...

Could anyone please assist me in trying to determine the critical path for a given Project Timeline in MS Project. Kind Regards Kenneth Basson

Good Day Could somebody please explain to me the advantages, limitations and typical applications of using rubber lined pumps as opposed to using metal casing/impeller type configurations. Which is better and what are the guidelines that must be applied when deciding on these. My typical...

Good Day All I would really appreciate guidance or assistance with respect to the following issue. We have numerous mobile operating gensets in operation at various remote locations in Africa. On numerous occasions, the voltage regulators has failed. I would like to know if there is any...

Could anyone please forward any comments on the effectiveness of vibratory stress relieving to relieve or reduce residual stresses that are set up during welding procedures of components for example. Does anyone know of documented research that has been carried out in this area? Any comments in...