benchmarking for surface mine heavy equipment. heavy mobile equipment benchmark for surface mines hme benchmark hme benchmark allows users to select a machine and define its operating circumstances generating a contextual estimate that details periodic maintenance costs manpower requirements and machine availability for the term of the
issues associated with existing mine plans. for example hard rock mining conditions are a wellworn excuse for poor productivity performancebetween equipment achieving typical availability rates of 85% and those achieving best practice of 90% or more. again some examples are included on page 13.
performance measurement of mining equipment.which results in increasing the availability of equipment. the present paper is an endeavor to compute inherent availability of dragline machine
calculate availability of machinery as one component of overall machinery productivity performance. establish the total available hours for the machine. this can be represented by the total number of hours the machinery can be used in a day or shift normally 8 10 or 12 hours.
impact of availability and utilisation of drill rigs on production at kanjole minerals limited 1bruno a. kansake and 2raymond s. suglo 1university of mines and technology tarkwa ghana 2botswana international university of science and technology palapye botswana email: abstract: the availability and the utilisation of
high availability: an uptime guarantee at black thunder mine to maintain the high level of production arch coal demands from its black thunder coal mine the mine relies heavily on its fleet of ® trucks.
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conducting an availability assessment can be an extremely useful tool for mine operators in effort to reduce operating and production costs. for example an increase of availability in a piece of equipment by 1 % may result in a profit gain between 1.73.5 %. equipment availability is typically calculated using the equation below:
the effort with this study is to propose methodology which can be used for bottleneck detection in mining and can be applied to most of the equipment in mining operation. for this purpose based on the literature three main parameters used in oee namely availability utilization and production performance have been selected.
availability. availability is the first of the three oee factors to be calculated. it accounts for when the process is not running both unplanned stops and planned stops. formula: run time / planned production time. example: 373 minutes / 420 minutes = 0.8881 88.81% performance
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during a workshop at the mine attended by the management team and key operational personnel the analyses from the kpmg hypothesis together with the mines own assessments were discussed and the following issues were identified as the main contributors to the poor equipment performance: availabilityaccident damagepower/cables
productivity and cost management pwc.com.au . pwcmine planinefficient processingwaste of explosiverework there needs to be sufficientequipment availability lifecycle cost capitalcost maintenance cost operating cost preventive & predictive mtce
oct 18 2017· los bronces reduces downtime in primary crushing plant by 69% in 2016. with a life cycle services maintenance contract the mine also experienced growth in the mechanical availability of its crushing process with improvements of 0.6% on crushing line 1 and a increased availability
in reliability theory and reliability engineering the term availability has the following meanings: . the degree to which a system subsystem or equipment is in a specified operable and committable state at the start of a mission when the mission is called for at an unknown i.e. a random time. simply put availability is the proportion of time a system is in a functioning condition.
the availability and the utilisation of drill rigs have great impact on the output of a mine. these can be optimised by reducing the downtimes and operational delays to ensure high availability
understanding the difference between reliability and availability people often confuse reliability and availability. simply put availability is a measure of the % of time the equipment is in an operable state while reliability is a measure of how long the item performs its intended function.
reliability analysis has helped in identifying the critical and sensitive subsystems in the mine production system which have a major effect on system failure. therefore a focus on reliability is critical for the improvement of equipment performance and ensuring that equipment is available for production as per production schedules.
studies on availability and utilisation of mining equipment an overview m.e.michael arputharaj deputy chief engineer / mining neyveli lignite corporation ltd tamilnadu india abstract in any opencast mining project the major share of initial capital investment goes towards the excavation and transportation equipment.
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availability. even though equipment many not be in actual operation the production departments wants it available at least a specified amount of time to complete their tasks and thus the need for a minimum availability value. an example of 98% availability for a continuous process says to
consequential costs of equipment failure and include them in equipment decisions. this research developed a model and method for tifying consequential costs of equipment downtime that is tailored to the tto deh on army installations.d t this model tifies lack of availability and downtime costs in elec i