ROLDAN MEDRANO PAPIO

• Measured old structural parts or assemblies to determine dimensional requirements of replacements parts.
• Maintained compliance with all safety procedures from both client and employer.
• Inspected equipment and structures to determine scope of work (SOW).
• Contributed to project success, delivering components that met stringent quality standards.
• Welded in flat, horizontal, vertical, and overhead positions.
• Inspected welds and checked critical measurements to meet specifications.
• Chipped off excess weld, slag, and spatter using hand tools.
• Maintained correct arc length and movement speed to form specified fusion depth and bead.
• Interpreted verbal and written instructions from work orders and welding blueprints.
• Blew out machines, checked welding leads, and wiring and changed filters for preventive maintenance.
• Improved overall project quality by providing expert advice on best welding practices and techniques.
• Conducted thorough inspections of completed welds, ensuring compliance with regulatory requirements and specifications.
• Ensured proper storage of consumables like electrodes, filler wires in a controlled environment to maintain quality and consistency.
• Enhanced project efficiency by executing precise welding techniques on various materials.
• Demonstrated versatility in multiple welding methods such as GTAW, SMAW, GMAW to meet diverse project needs effectively.
• Increased client satisfaction by delivering high-quality welds that met or exceeded industry standards.
• Consistently maintained a clean workspace, reducing potential hazards and increasing overall workplace safety levels.
• Cut, grinded and bent edges of materials to be joined for snug fit using power grinders and hand tools.
• Chipped away debris and thick crusts of rust, slag, and other materials to ready surfaces for welding.

• Bolted, clamped and tack-welded parts to secure components prior to welding.
• Fabricated shop parts directly from blueprints.
• Maintained a safe working environment through strict adherence to safety protocols and guidelines.
• Clamped, held, tack-welded, heat-bent and bolted component parts to achieve required configurations and positions.
• Removed and repaired unacceptable welds with air arc and grinder to meet quality guidelines.
• Completed welding projects using gas tungsten arc, gas metal arc, flux-cored arc, plasma arc, and shielded metal arc equipment.
• Welded parts using arc, gas-shielded arc, submerged arc, and gas equipment.
• Conducted special welds with extremely low tolerances for industrial operations.
• Consistently met project timelines through effective time management and prioritization of tasks.
• Streamlined workflow processes through effective communication with cross-functional teams including engineers, designers, and fabricators.
• Maximized weld strength by selecting appropriate filler materials based on the specific requirements of each project task set forth in job orders.
• Reduced material wastage by accurately measuring and cutting materials for optimal use in projects.
• Prepared welding equipment to perform advanced welding work.
• Welded metal components in vertical, overhead and flat positions.
• Maintained safety by wearing protective equipment, staying alert and following procedures.
• Inspected welds for accuracy and conformance to specifications.
• Prepared for assembly by positioning, aligning and securing parts using tools such as jigs and vises.
• Ensured proper storage of consumables like electrodes, filler wires in a controlled environment to maintain quality and consistency.
• Cut, grinded and bent edges of materials to be joined for snug fit using power grinders and hand tools.

• Cut, grinded and bent edges of materials to be joined for snug fit using power grinders and hand tools.
• Welded metal components in vertical, overhead and flat positions.
• Maximized weld strength by selecting appropriate filler materials based on the specific requirements of each project task set forth in job orders.
• Consistently met project timelines through effective time management and prioritization of tasks.
• Project completion and punch listing prior for plant commissioning.

• Removed excess slag with arc-cutting, grinding, and using other equipment.
• Used FCAW welding process on heavy structural steel.
• Demonstrated adaptability by successfully completing challenging projects that required diverse welding methods and materials expertise.
• Kept work area clean and organized.
• Tested and Qualified structural welder WPS 3G & 4G using FCAW welding process
• Positional full welding of beams, columns and platforms. Complete penetration with 100% Ultrasonic testing, Magnetic Particles Testing and Penetrant Testing in accordance with working procedures specification.
• Satisfaction with client achieving high quality of welds, no weld rejection and timely delivery.

• Tested and Qualified coded welder, Pipe: WPS -010 GTAW/MMAW welding process.
• Positional butt welding of 50mm to 600mm pipe, wall thickness 20mm-100mm using GTAW/MMAW welding process with 100% NDT- X-ray, ultrasonic testing.
• Evaluate and select appropriate welding materials for each project.
• Actively participate in team efforts to meet daily production goals set by supervisor

• Tested and Qualified, Plate: 1 WPS-PG-028, AS/NZS 1554.1SP- MMAW 3G-UP -12P, Plate: WPS-PG-027- AS/NZS 1554.1SP- MMAW 4G- 12P.
• Tested and Qualified, Pipe 1 WPS-PG-044- ASME-IX- MMAW 6G UP- 10.95X168OD.
• Positional welding of stiffeners, gussets, pipe supports and pipes with 100% NDT testing.
• Follow safety protocols and maintain safe work habits consistently.

• Tested and Qualified, Plate: 1 WPS-PG-028, AS/NZS 1554.1SP- MMAW 3G-UP -12P, Plate: WPS-PG-027- AS/NZS 1554.1SP- MMAW 4G- 12P.
• Tested and Qualified, Pipe 1 WPS-PG-044- ASME-IX- MMAW 6G UP- 10.95X168OD.
• Tested and Qualified, Pipe: 1 WPS-PG005-ASME IX- GTAW 6G UP-50NBX5.54mm thickness
• Positional welding of Stiffeners, gussets, pipe supports and pipes with NDT compliance finishing 85% of projects ahead of schedule.
• Utilize various welding tools and techniques to bond metal components effectively.

• Attend pre-start meeting and Breatho test.
• · Boom and stick cracks repairs.
• Competent to use of welding process, FCAW, GMAW, MMAW and GTAW on positional work.
• Chassis repair on CAT, Komatsu, and Hitachi machinery.
• Handrail repairs.
• Installed wear plate on dozer push arm using A5.20: E71 T-1.
• Major crack repairs in car body of Hitachi 3600 and 2500. Cut a manhole to repair inside cracks. Gouge and weld with full penetration or use a backing plate if required. Use outer shield A5.29: E91T1-GM, 91Ni1-HSR.
• Oxy cutting plates use oxy-acetylene handpieces.
• Operate a forklift and use an overhead crane.
• Refurbished dozer blade D10, cut the cheek plate section both sides then re-fit 50mm bis alloy plate. Cut with a profile and installed wear plates 12mm-16mm. Gouged the skin plates, bottom lip plate. Fab. and re-installed dura-flex plates, lip plates and full welding.
• Refurbished buckets, 2500, 3600 and 9200. Installed cheek plates, lip plate, strip plates, heel blocks, gums, adaptor’s, heel shoes and wear plate packages. Prep all joints and weld with penetration/gouging back to finish multiple welds. Weld on adaptors, corners and all joints.
• · Used 0f 1-2 roll welding wire a day (A5.20: E71 T-1) welding of 3600 bucket adaptor and lip plates.
• Used Fabshield XLR-8, (AW8 A5.20 ASME SFA-5.20) and Inner shield NR-232,311 (AWS A5.20 ASME SFA-5.20 E70T-7) in windy conditions.
• · Welding of heel blocks. Pre- heated 200 degrees prior to welding.

·

. Boom and stick cracks repairs

· Blade /bucket/trays inspection

· Competent to use of welding process, FCAW, GMAW, MMAW and GTAW on positional work.

· Chassis repair on CAT/Komatsu/Hitachi/Liebherr machinery

· Clean shaven policy.

· Checked daily scope of work and daily handover.

· General fabrication: design and fabricate brackets, cutting, grinding and welding steel section. Using powers tools and working in awkward position whilst grinding and welding. Manual handling like lifting and sliding steel section to place in position to cut grind and weld.

· Handrail repairs.

· Installed and welded on position the all-grouser bars into worn out section.

· Maintenance of Dump Trucks- MT6300/4400, loader / excavator buckets, CAT 6090, Terex RH400 &170, wheel loader, drills and ancillaries CAT D10T/R and D11R/T

· Machine inspection

· Oxy cutting plate uses oxy-acetylene handpieces.

· Repaired loader bucket; gouging the worn liner package plates and heel shoes. Grind to clean the all-plug welds and welded areas prior to crack testing. Gouge the crack to repair. Pre-heating is required before welding (150-300 degrees). Grind and blend all the welds.

· Refurbished/repaired excavator buckets. Gouging to remove all parts required to repair, (lower, middle/top beam, side plate, brackets, side wear plates, side cutter, main side cutter, roller plate and wear straps.

· Refurbished clamp and backboard for RH400& RH170. Gouge to remove all wear plate packages. Inspection and crack test. Gouge all crack to repairs. Install all wear plate packages. Pre-heating for 150degree before to commence welding repairs.

· Replacing GET.

· Repaired cracks; must be pre- heated, gouge, and clean.

· Sign into SWI, generate hot work permits and complete G2G (2x2 ) before commencing the task.

· TIG pipe welding of Aluminum, carbon and stainless steel.

· Identified and resolved equipment malfunction, communicating effectively with supervisor to maintain workflow.

· Monitored welding process to prevent overheating, ensuring integrity of materials.

· Maintained a clean and organized workspace to enhance safety and productivity.

· Qualified and tested coded welder 2 inches. Carbon steel sch80 GTAW (6G), 2 inches. Stainless steel sch80 GTAW (6G), 6 inches. Carbon steel sch40 GTAW/FCAW (6G) and 6 inches. Carbon steel sch40 GTAW/MMAW (6G).

· Working on scaffolding and EWP to weld positional, pipe support, 2451dia. Duct pipe using FCAW, 100% NDT, 200mm, diameter pipe using GTAW/FCAW, 100% X-ray.

· Pipe inspection must be completed before commence welding. Welding ID number, batch number of consumables and drawing number must be presented.

· All electrodes to be used have always come from welding oven.

· Installed 3B-Economizer with 117, 414kg and all piping for outlet/inlet, pipe supports and brackets.

· Worked on confined space to weld the outside/inside of 3B Economizer- Inlet transition 6729kg, Economizer 3B – 83599kg, Center box support 13478kg, Outlet vestibule 13608kg using FCAW with 100% NDT and hydrotesting.

· Operated manual and semi-automatic welding equipment, utilizing various techniques such as MMAW, GTAW-TIG, GMAW and FCAW process

· Aluminum welding.

· Pressure pipe welding using STICK, MIG, TIG, FCAW and STT welding process.

· Pipe fitting and full welding of fuel line using TIG process – root run/capping.

· Welding chutes using FCAW process (3XP wire).

· Welding dragline turret with 100% UT. (Maintain 250-degree heating temperature, 27V, 325Amps using verticor 81 NI H4 1.6mm FCAW wire.

· Attend daily shift pre-start meeting.

· Generate permits required on task. BMA safe, JSA, Hot work Permit, Work at Height and Confine space

· Gouging and welding all exiting structural beams and columns.

· General welding and fabrication of handrails, platforms, frames, pipes and all CHPP structural components.

· Positional pipe welding using FCAW, GMAW, MMAW and GTAW welding process.

· General measurements and provide technical drawing preparing to job front.

· Chute repair- patch the worn plate section, wear plate replacement and curtain.

· Bucket crack repair, install and weld strip Biss alloy plate on worn section. (Blended weld to eliminate cracking.)

· Compliance with the 1SAP process, including time confirmations, raising notification and closing workorders.

· Complete sub-notification after structural inspection.

· Complete TTT- TAKE- TIME-TALK. (4 times a month and 1 hazard)

· Digger structural inspection and crack repair, CAT6030, TEREX CAT6040, KOMATSO PC1250, CAT 6040. (Frame catwalk, Crawler chassis, Engine and fuel mounting bracket, Monoblock boom, Stick BH, Loading bucket, Boom stick, backhoe, pins and sleeve, paneling, covering, ladders, handrails and platform).

· Generate all permits required before commencing tasks (BMA safe, risk assessment, JSA, permit to work, Hot work, Emergency management plan and Work at height)

· Handover in the morning and before end of the shift.

· Fabricate handrails, Platforms and Ladders for various designs of mobile equipment

· Pre-heated all Biss alloy materials before gouging and welding

· Remove the broken bolt from tracked frame and LHS/RHS mounting.

· Returning tools after being used from tools store.

· Tracked dozer structural inspection and cracks repair. CAT- D10T, D10R, D11R, D11T.

· Thorough understanding of safety practices and regulations in welding environments.

· Positional pipe welding using FCAW, GMAW, TIG and MMAW welding process.

· Attend daily shift pre-start and toolbox meeting.

· Bucket crack repair, install and weld strip Biss alloy plate on worn section and change out blade.

· Kress Hauler Truck structural inspection and crack repairs, (Rear axle assembly, Rear ‘Y’ and push beam, Rear stinger, Rear bulkhead/Slope/Access covers, Muffler canopy, Side slope/wall structure, Coal bin doors, Centre bulkhead, Upper air beam, Front bulkhead/slope, walkways, handrails, access ladder and rear fender. (KRESS 200CII- CH2-23)

· Dump Truck structural inspection and crack repair, (Rear cross tube, Tail casting left/right, Side rail left/right, Bumper, Upper superstructure left/right. Front side rail left/right, Support steering, support for left/right, Fuel mounting tank front/rear, Front/rear hydraulic mounting tank, radiator mounting left/right, Beam, Pin bore for control rod, Rear suspension left/right. (CAT 793F- E628, CAT 793D-RD9-22)

· Digger structural inspection and crack repair, (Frame catwalk, Crawler chassis, Engine and fuel mounting bracket, Monoblock boom, Stick BH, Loading bucket, Boom stick, backhoe, pins and sleeve, paneling, covering, ladders, handrails and platform.

· Float, (CAT 793C- FLT3,) service truck, (CAT 773F-ST, CAT 775-ST), water truck (CAT 785D-WT) structural inspection and cracks repair.

· Compliance with the 1SAP process, including time confirmations, raising notification and closing workorders.

· Complete sub-notification after structural inspection and time confirmation

· Complete TTT- TAKE- TIME-TALK.

· Fabricate handrails, Platforms and Ladders for various designs of mobile equipment

· Fabricate and weld water pipeline on water truck. CAT 785DT

· General earth moving machine maintenance, ancillary, grader, digger, dozer, dump truck tray, wear packages, excavator, float and trailer, Kress haul truck and water cart (CAT, KOMATSO, HITACHI, Liebherr and Bucyrus).

· Generate BMA safe, JHA, permit to work, hot work and work at height permit before commencing task.

· Gouged articulated hitch pins on grader, rear strut socket pins and dog bone on dump truck, blade tilt cylinder pins on dozer, dump door cylinder pin on Kress truck and bucket pins on digger.

· Oxy acetylene cutting and air arc gouging of major component

· Performing weekly bucket and blade condition reports.

· Pre-heated all Biss alloy materials before gouging and welding

· Positional pipe welding using FCAW, GMAW, MMAW and GTAW welding process.

· Qualified welder AS/NSZ-2980:2007

· Verbal and written daily work handover

· Onsite welding Ethanol stainless tank WILMAR Mackay (100% X-ray).

· Full welding of fuel line using TIG process – root run/capping.

· Skilled in operating hand and power tools essential for welding tasks.

· Expertise in MMAW, GTAW-TIG, GMAW, FCAW and STT welding techniques with a focus on metal types including carbon, stainless and aluminum.

· Proficient in welding various positions, ensuring high-quality outcomes.

· Welding chutes using FCAW process (3XP wire).

· Welding structural steel using GMAW and FCAW welding processes.

· Welding of Ethanol stainless tank WILMAR Mackay (100% X-ray).

· Full welding of heavy structural steel and pressurize piping compliance with NDT.

· Specialized in use of STICK, MIG, TIG and FCAW welding process in any positional work

· Stainless pipe welding.

· Structural fabrication and piping accordance with engineering drawings.

· Welding of Biss alloy on positional works.

FIXED PLANT

· Adhere to all safety regulation and procedures during maintenance and repair activities. (Isolation, JHA, TAKE -5 and Permits)

· Perform routine maintenance tasks on fixed plant, including chutes, conveyor, roller, chutes, handrails, structural and piping’s.

· Utilize plasma cutting, oxyacetylene cutting equipment to prepare steel plate and pipe.

· Conduct visual and non-destructive testing (NDT) of welding joints using magnetic particle inspection techniques.

· General fabrication of structural and piping along fixed plant area.

· Positional welding and competent to use of different welding processes, MMAW, GTAW, GMAW and FCAW

· Air arc gouging of major components. Removal of existing weld and re-weld new structural assembly and structures.

MOBILE PLANT MAINTENANCE

· Mine site refurbish/rebuild of Excavator/Digger, Loader Buckets, Dozer, Grader, Dump Truck Trays, Grader, Drill wear packages and Excavator booms and Sticks. (Caterpillar, Hitachi, Komatsu).

· Bucket crack repair, install and weld strip Biss alloy plate on worn section and

change out blade.

· Complete maintenance job order after inspection including man hours, workers quantity and materials to be use.

· Fabricate handrails, Platforms and Ladders for various designs of mobile equipment.

· Full welding of pressure pipes, small bore up to big bore using SMAW, GTAW & FCAW process.

· Full welding of pressure pipes using miller pipe worx400.

· Flux core welding repairs on mobile equipment using due shield wires (71,81NI, 3XP, solid Nigel high ten).

· Maintained working environment with an acceptable level of housekeeping.

· Operate overhead gantry crane and forklift

· Performing weekly bucket and blade condition reports.

· Specialized in use of STICK, MIG, TIG and FCAW welding process in any positional work

· Welding of Biss alloy on positional work.

· Achieved 100% compliance with safety regulation and quality standard, resulting in zero defects and zero workplace injuries over 24months.

· Reduced production time by 30% through the implementation of advanced welding techniques and streamlined workflow processes

· Pressure welding- Carbon, low temperature Carbon and Stainless steel.

· Specialized in use of STICK, MIG, TIG and FCAW welding process in any positional work

· Weld small bore up to big bore using GTAW process and combination welding of GTAW/MMAW for all small bore up to heavy bore. Bechtel code P1-T. (CS) / Bechtel code P8-T-Ag ( CVN) B31.3

· General repairs/ modification on site. (Water tank walls, inlet/outlet tank nozzle, piping lines, manifold, vent, drain, access and emergency ladder, handrails and platform.

· Specialized in use of STICK, MIG, TIG and FCAW welding process in any positional work

· Wash plant maintenance (Primary and Secondary chutes, conveyors, agitator, screens, all piping and structural components

· Worked on Confine and work at height.

· Welding of Biss alloy on positional work

· Welding Carbon steel pipe in different positions from small bore up to heavy wall using MMAW, GTAW, GMAW and FCAW welding process.

· Welding of Stainless-steel pipe using GTAW process in all positions.

· Welding of all pipe support, bracket and structural in all position using different welding process.

FIXED PLANT

· Adhere to all safety regulation and procedures during maintenance and repair activities. (Isolation, JHA, TAKE -5 and Permits)

· Perform routine maintenance tasks on fixed plant, including chutes, conveyor, roller, chutes, handrails, structural and piping’s.

· Utilize plasma cutting, oxyacetylene cutting equipment to prepare steel plate and pipe.

· Conduct visual and non-destructive testing (NDT) of welding joints using magnetic particle inspection techniques.

· General fabrication of structural and piping along fixed plant area.

· Positional welding and competent to use different welding processes, MMAW, GTAW, GMAW and FCAW

· Air arc gouging of major components. Removal of existing weld and re-weld new structural assembly and structures.

MOBILE PLANT MAINTENANCE

· Mine site refurbish/rebuild of Excavator/Digger, Loader Buckets, Dozer, Grader, Dump Truck Trays, Grader, Drill wear packages and Excavator booms and Sticks. (Caterpillar, Hitachi, Komatsu).

· Bucket crack repair, install and weld strip Biss alloy plate on worn section and

change out blade.

· Complete maintenance job order after inspection including man hours, workers quantity and materials to be use.

· Fabricate handrails, Platforms and Ladders for various designs of mobile equipment.

· Full welding of pressure pipes, small bore up to big bore using SMAW, GTAW & FCAW process.

· Full welding of pressure pipes using miller pipe worx400.

· Flux core welding repairs on mobile equipment using due shield wires (71,81NI, 3XP, solid Nigel high ten).

· Maintained working environment with an acceptable level of housekeeping.

· Operate overhead gantry crane and forklift

· Performing weekly bucket and blade condition reports.

· Specialized in use of STICK, MIG, TIG and FCAW welding process in any positional work

· Welding of Biss alloy on positional work.