Motor Vehicle High School
Resume:
Benjamin Koomson
Marital status: married - Ghanaian
Mobile: +233********* / +226*********
Email: ********@*****.***/ ********@*****.***
Years of working or working experience:17years
Education History - Certificate
National Vocational Training Institution: May 2008-July 210 Motor Vehicle Technicians – Part I, II and III.
University of Mines and Technology January: 2006-May2009- Integrated Plant Mechanics.
TakoradiTechnical Institute: May 2001-July2004 Motor Vehicle Mechanics Work.
Kweikuma STMA Junior High School: 1993 – 1996 Basic Examination Certificate.
Professional Courses Attended
University of Mines and Technology - Effective Supervision & Management; Hydraulics and Pneumatics; Practical First Aid; Computer Applications
Industral Training Certificate
Kinross Gold Corporation - MD2640 SKFX Bucyrus Drill, Cat ET, SIS, Hydraulic and Pneumatic.
Goldfields Ghana Limited - Komatsu HD 785-7 and Team Leader.
Mantrac Ghana Limited O&K/Terex Excavator RH120E.
African Mining Services Ghana - Pantera 1500 Mechanical Training.
Personal Attributes and Skills
Providing parts requisition for all maintenance and repairs activities on heavy mining equipment and work with safety and environmental control policies of the company and ensuring worker’s safety on job.
Conduct risk assessment, lock-out and tag-out for safety purposes and safely working condition.
Responsible for reporting in writing details of work activities at the completion of every job in work orders and turn over notes.
Knowledge of mechanical and electro - hydraulic
Order parts accurately, complete all necessary paperwork involved and decision making and problem solving skills.
Ability to establish and maintain working relationship with team members of diverse cultural regardless of race, religion, age, sex, or disability.
Carry out all scheduled maintenance, act quickly to rectify and complete repairs due to unscheduled maintenance.
Accurately diagnose and troubleshoot hydraulic, electrical, pneumatic and mechanical problems on heavy equipment.
Helps develop other department or section personnel to performs and transfer of technical knowledge to the Nationals and team members.
Technical skills, Analytical skills, Good communication skills, Good report writing and record keeping skills, Computer skills.
Knowledge of CAN BUS system.
Knowledge of pneumatic, electronic and hydraulic diagnostic procedures and operations.
Ability to read and interprets hydraulic, electrical and pneumatic diagrams or schematics together with their symbols.
knowledge of the Rig Control System(RCS) and operations.
Knowledge of CAT Electronic Technician(ET), System Information Service(SIS), Vital information System(VIMS).
Knowledge of Komatsu Vehicle Health Monitoring System(VHMS and Komtrac plus-MM).
Knowledge of Terex/O&K/Bucyrus Board Control System(BCS) and knowledge of LIEBHERR - BBT.
WORK HISTORY
12/2021 - Up to date Bisha Mining HME Drill Mechanic( - Eretrea)
Equipment: Drill Rigs: CAT MD6290, Atlascopco FlexiRoc D65 and D55 and Schramm T450WS and T450GT
Responsibilities:
Acting as Supervisor
Identify the highest priority for each day and focus on completing relevant tasks.
Ensures good house keeping
carries out actual maintenance and repairs of HME in an efficient and effective way in order to minimise downtime.
08/2019 - 11/2021 Right Engineering Solutions - Rig Mechanic(Iamgold, Essakane - Burkina)1year\5month
Equipment: Drill Rigs: Atlascopco Pit Viper 235 and Sandvic D45KS
Responsibilities:
Supervise and assigns the work of planned maintenance, repairs and services to employees.
Conducts preventive maintenance PM1 to PM4(250 to 2000hrs) on Drill Rigs, CATs and Excavators by taking oil samples and changed engine, hydraulic, compressor, rotary head, PTO, transmission and change fuel, oil, hydraulic, coolant, compressor and air filters and removed and replaced hydraulic pumps, motors, feed cylinder, jack cylinder, compressor, engine, tower and bare hoses.
Carried out testing and adjustment pressures on swing, steering, tramming, greasing, coolant, rotation, implements, water injection, dust collector, winch, electrical, pneumatics, hydraulic systems by following schematics, operation, specifications manuals and troubleshooting section.
Diagnoses and troubleshoots machine and engine malfunctions and failures on, tramming, greasing, coolant, rotation, water injection, dust collector, winch, electrical(CANBUS), pneumatics, hydraulic systems by following schematics, operation manuals, manufacturer's instructions and engineering specifications, troubleshooting malfunctions.
Carried out pre, post PM and daily inspection to identify backlogs in order to reduce future breakdowns and to achieved high machine availabilities i.e.
1. Loose bolts, leakages, bare electrical wire, loose hose fittings and clamps; make sure automatic grease and thread grease work.
2. Electrical checks - loose, corrosion, abrasion cable connector, broken or bare cable or wire, cable or wire connector pin
03 /2019- 07/2019 Right Engineering Solutions - Equipmet Technician(Nordgold, Bissa - Burkina )5month
Equipment: Drill Rigs Atlas ROCL7(40)LF, ROCL8(25)LF, FlexiROC D65SmartROC- D65 T3 and Epiroc Flexi D65, Cat Haul truck 777F/G, Loader 993K and 966H, Grader 16M, Cat 6020B/6015B and Komatsu PC2000/450 Excavator
Responsibilities:
Implement correct preventive maintenance practices and ensures that high machine availability is maintained for optimum performance.
Supervised all PM servicing jobs on the company’s fleets and signed off on service sheets, component change out forms and job cards when completed.
Hand-on job which includes rectifying all defects; observe on machines during PM pre-inspection. Changing all major components that are due for change-out
Detect of faults through the uses of diagnostic laptop computers, gauges and instruments in all machine systems; electronics, hydraulics, power train, engines and general machine performance.
Do calibrations on the following systems; injector solenoids, hoist, buckets etc
Replacing hydraulic hoses, tramming, motors, hoist pumps, stick cylinders, boom cylinders, bucket cylinders, swing motors, implement pumps, rotation pumps. final drives, wheel stations, bucket, boom, stick, steering pumps. flexible coupling, flywheels, PTO or pump drives gear box, swing gear, mast, pressure filters.
03/2018 - 09/2018: Drill Masters Africa Limited Drill Mechanic - Ghana - 8month
Equipment: DE820, DE810, DE710, Schramm 450GT and T685WS
Responsibilities:
Resealed hydraulic cylinders, minimum valves, air blocks, hydraulic blocks, pumps, directional control valves, intake valves and poppet valves.
Carry out planned preventive maintenance, testing and adjusting of machines pressures and mechanical settings
Mechanical pit areas and maintenance work in a safe, clean manage conditions Solve all hydraulics and air systems problem with the help of schematic.
Disassembly and assembly of rigs to replace worn out parts.
Troubleshoot, repair, services and maintain, schramme and drill rigs and testing and adjusting to maintain good working condition drill rigs.
Carrying out all component repair and change out.eg. valve, motors, pumps, cylinders and undercarriage repair
08/2013 - 10/2017: Kinross Gold Corporation-Haul Mechanic/Drill Rigs Supervisor (Tasiast) - 4yrs/2months
Equipment: Drill Rigs: Atlascopco Pit viper - PV235, Bucyrus MD2640 SKFX Sandvik cubex580, pantera1500DPI/DP, CAT truck 793 Komatsu HD785-7/5,
Responsibilities
Supervise all PM servicing jobs on the company’s fleets and signed off on service and backlogs sheets.
Performs regular inspections in order to detect potential problems before they cause breakdowns.
Conducts preventive maintenance on equipment by checking engines, motors, pneumatics, hydraulic systems by following schematics, operation manuals, manufacturer's instructions and engineering specifications, troubleshooting malfunctions.
Carries out fault finding by using precision measuring and testing instruments and diagnosis faults, repairs and services on DTH Drills.
Inspect work completeness and ensure that all breakdowns are dealt with on time.
Monitor critical equipment and machinery to ensure proper operation and calibration.
Adjust equipment and repair or replace defective parts, components, or systems, using appropriate tools.
Accurately diagnose engine and mechanical\electrical component problems.
Schedule and carry out routine maintenance work including fluid replacement, lubricating parts.
Troubleshooting on feed system, air system, tramming system, swing system, slow boom movement, low engine power, low system pressures, excessive black, blue or white engine smoke, hydraulic overheating, compressor overheating, engine overheating, greasing system, thread grease system, rock or hammer oil, transmission, steering, torque convertor and fuel system.
Pressure testing and adjustment on swing system; tramming system; percussion system; rotation system; fuel system; hoist system; implement system; cooling system; air compressor system; accra feed block pressures; pilot system; system pressures; torque convertor pressures; transmission system; steering system; greasing system pressures.
Training of Mauritanian mechanical personnel (Hydraulics, mechanical and basic electrical).
11/2010 - 09/2013: Gold Fields Ghana Limited Tarkwa - Artisan III HME Mechanic - 2yrs/9month
Equipment: Caterpillar, Haul truck:793D, 785C, 777D, 777F, 773D. Wheel loader: 992G, 966G,966H, 28G. Wheel dozer: 844, 834H. Track dozer:D10T, D10R, D9R, D9T. Motor grader: 16H, 16M. AD truck 740. Backhoe: 432E and O&K/Terex excavator RH120E and RH90E.
Responsibilities:
Diagnose with Cat electronic technician; advisor or messenger display module; vital information syste, komatsu( VHMS) to find Active diagnostic code, logged diagnostic codes, calibration, reset parameters, check status, commission, configuration, injector solenoid calibration, injector solenoid and cylinder cutout.
Daily checks and inspections these include (check fluids level, defects, cracks, broken parts, fluids leakages and burst hose
To perform PM services thus changing of oil, hydraulic and transmission filters. Changing of hydraulic transmission and engine oil in accordance with PM schedule of each machine.
Conduct visual check for oil leaks and cracks and other mechanical defect and ensure that all defect are fixed before release machines for production
Resealing of brake master cylinders, track adjusters, hydraulic control valves.
Carrying out Preventive Maintenance Services (PM) at 250hrs, 500hrs, 1000hrs, and 2000hrs. Jobs include: changing of engine, transmission, and final drive oils, replacement of engine, fuel, transmission, air, and hydraulic oil filters, crack inspections etc.
Inspection of tracks, ground engaging tools, rollers, idlers and radiator cores on dozers at every end shift
Using dial gauge indicators to measure for wear on equalizer bar end and center pins and bearings. Replace equalizer bar, bearings and center pins when wear is found to be above acceptable limits
Grease steering ball studs, A-frames, suspension bearings, bucket pins (skip). Record all defects at every end of shift
04/2010 - 10/2010: Mantrac Ghana Limited Tarkwa - O&K Mechanic - 7month
Equipment: O&K/Terex RH120E and RH90E
Responsibilities:
Changed bucket, stick, boom, swing box, radiator, cooler, control valves, track chain, down and top rollers, sprocket and slew ring, hydraulic pumps, motors, stick cylinder, bucket cylinder, boom cylinder, boarding ladder cylinder, engine and bare hoses.
Commissioning of machines which includes filling of hydraulic oil, transmission gear boxes oil to manufacturer specification level, checking of hydraulic oil pressures in the various hydraulic systems circuit with electro-mechanical pressure gauge or tetra gauge, monitoring of hydraulic oil pressures and machine status with CAT Electronic Technician (ET)
Scheduling Preventive Maintenance, Backlog implementation and Major Component replacement in the correct and efficient manner within projected deadlines.
Working towards increasing clients satisfaction through ensuring quality assembly, maintenance repairs and accurate fault diagnose while working in a safe, clean and efficient manner.
Listening and discussing complaints of the clients and providing them with solutions – Discussing the faulty conditions with clients and explained the problem to them.
Maintaining continuous communication with other supervisors to enable quick response to complaints on equipment/ machinery thus minimizing breakdowns periods.
Using Electronic Technician in Troubleshooting, calibrations, changing of configuration and checking of active code etc. on all Caterpillar equipment in the workshop and pit
Inspection of all hydraulic system and hydraulic hoses and fittings while in operation of strong back equipment on hold.
01/2006 - 04/2010: African Mining Services Ghana - Integrated Plant Mechanic - 4yrs/2month
Equipment: Caterpillar, Haul truck::777D, 777C,777F, 773D. Wheel loader: 992G, 966G,966H, 28G. Wheel dozer: 960. Track dozer:D9R, D9T. Motor grader: 16H. Backhoe: 432E. Liebherr excavators: 994R, 984C, 944R. Sandvik Pantera: 1500DP/DX and Drill tech D254S
Responsibilities
Performing Mid-Life repairs on Cat engines: change turbo chargers, water pumps, coolant regulators and injectors. Valve lashes are adjusted.
Resealing of brake master cylinders, track adjusters, hydraulic control valves.
Grease steering ball studs, A-frames, suspension bearings, bucket pins (skip). Record all defects at shift ends.
Carried out undercarriage repairs removed and replaced track frame, top and down rollers, equalizer bar, Idler, sprocket, segment, track tensioning cylinder, track pad.
Carried out pre and post PM to achieved high machine availabilities, conduct daily inspection to identify backlogs in order to reduce future breakdowns
Perform daily machine inspection and lubricant level checks and top and record all defects and send it to the planning department.
Inspects, tests. troubleshoots, diagnoses, builds, rebuilds, overhauls and maintains all pneumatic, mechanical and electronic-related systems and components
Perform routine and scheduled maintenance services such as oil changes, lubrications, and tune-ups, assembly and dissemble of component.
West 02/1999 - 08/2004 Western JAK Engineering Limited - Apprenticeship Training - 5yrs
Equipment; Cat and Komatsu machines. Dozer D8, D7, Back Hoe 432E. 345C, 385C/L and Komatsu:D275A
Breakdowns - Troubleshooting
.e.i problem - Overheating( coolant, hydraulic, compressor).
Probable causes - faulty thermostat or thermal valve, low fan pump pressure, low fan motor speed, clogged cooler or radi ator core or fins, faulty temperature sensor, faulty motor anti cavitation valve, worn fan motor or pump shaft splines or shaft key, broken fan motor or pump shaft and worn fan blade
Pro Problem - hydraulic cylinder drift; i.e. (mast or tower, jack, feed, boom or bucket cylinder)
Probable cause - faulty counter balance valve, internal leakage, faulty holding valve, directional control valve' spool open partially, faulty floating valve.
Prob
REFERENCES
Company: Iamgold - Burkina Faso - Essakane
Year: date; 1st August 2019 up to date
Re contact: +226********,+212*********, *************@*******.***
Posi position: Drill Rigs Experts Technician - Omar Boulahya
Company: NORDGOLD - Burkina Faso - Bissa/Bouly
Year: date: 1st March 2019
Refer contact: +226******** and E-mail:*********.***@********.***
Posi position: Drill Rigs and Senior Excavator Supervisor - Alexander Kim
Com Company: Kinross Gold Corporation - Mauritania-Tasiast
Year: date: 31st August 2013
Refer contact: +222******** and E-mail: *****.******@*******.***
Posit position: Drill Rigs Supervisor - David Gibson
Contact this candidate