Instrument & Control Technician with 6+ Years Experience

CURRICULUM VITAE

JIBREEL OMAR

Instrument & Control Technician

Mobile: +218-*****-****, Email: ***************@*****.*** PROFESSIONAL SUMMARY

Experienced Instrument & Control Technician with over 6 years of hands-on experience in oil & gas upstream production facilities, power plants, and compressor stations. Specialized in installation, calibration, maintenance, testing, troubleshooting, and commissioning of a wide range of field instruments including:

Pressure Instruments: Differential Pressure (DP) Transmitters, Pressure Switches, Pressure Gauges etc.

Temperature Instruments: RTDs (Pt100), Thermocouples, Temperature Transmitters, Temperature Switches, Thermowells etc.

Level Instruments: Smart Radar Level Transmitters, DP Level Transmitters, Ultrasonic Level Transmitters, Magnetic Level Gauges, Float Type & Displacer Level Switches.

Flow Instruments: Orifice Plate Flow Systems, Venturi Tubes, Flow Nozzles, DP Flow Transmitters, Electromagnetic Flow Meters, Turbine Flow Meters, Flow Switches

Control Valves: Fisher Control Valves, Globe & Ball Type Valves, Smart & Analog Positioners, I/P Converters, Solenoid Valves.

F&G Instruments: Gas Detectors, Smoke Detectors. Fire Detectors etc.

Vibration & Compressor Monitoring Instruments

MCC & Motor-Related Instrumentation

Strong expertise in Honeywell Experion DCS operation, loop checking, 4–20 mA & HART communication, cable installation & termination, insulation resistance testing, control loop tuning, alarm management & startup & commissioning support. Experienced in working within hazardous area classifications and adhering to international oil & gas safety and QA/QC standards.

EDUCATIONAL QUALIFICATIONS

Bachelor’s Degree in Computer Science – Africa University (2020 – 2023)

Diploma in Petroleum Industries (Instrumentation) – Petroleum Institute (2016 – 2019) CERTIFICATIONS & TRAINING

ISO 9001:2015 – Quality Management System

Instrument Air Compressor Package Training – Piacenza, Italy (2025)

HART Communicator Configuration Training

Industrial Safety & Permit to Work System

EMPLOYMENT HISTORY

Company: Al-Harouge Oil Operations

Position : Instrument & Automation Technician

Location : Amal Oil Field & Ghani Oil Fields, Libya Duration : 2019 – Present

DETAILED TECHNICAL EXPERIENCE

Instrument Installation & Maintenance

Experienced in installation, calibration, testing, commissioning, and troubleshooting of Pressure, Temperature, Flow, and Level transmitters across oil & gas production facilities, power plants, and compressor stations.

Hands-on experience in installing Differential Pressure (DP), Pressure transmitters with proper manifold mounting (3-valve/5-valve), impulse line tubing, correct slope routing to prevent vapor or liquid trapping, leak testing.

Termination in junction boxes and marshalling panels.

Performed zero and span calibration using dead weight testers and digital pressure calibrators, configured LRV/URV parameters through HART communicator, verified 4–20 mA signal integrity, and ensured proper DCS scaling.

Troubleshooting experience includes identifying blocked impulse lines, air locks, transmitter drift, unstable signals, grounding issues, loop power failures, and sensor damage.

Experienced in installation and calibration of RTDs (Pt100) and Thermocouples (Type J & K) with correct insertion depth, Thermowells inspection, polarity verification, Temperature calibration, resistance and mV simulation testing, loop verification, and resolving open circuits, short circuits, noise interference, and inaccurate temperature readings.

Skilled in installation and maintenance of DP-based flow transmitters connected to orifice plates, venturi tubes, and flow nozzles with correct tapping orientation,

Impulse tubing leak testing, square root extraction configuration, and troubleshooting incorrect flow readings caused by impulse blockage, scaling mismatch, or signal noise.

Proficient in installation and calibration of DP and smart level transmitters including wet leg/dry leg configuration, reference leg verification, tank height range setting, alarm set point testing, and resolving false readings due to vapor pressure, wet leg evaporation, or incorrect range configuration.

Additionally experienced in installation and configuration of smart Radar Level Transmitters on storage tanks, ensuring proper nozzle alignment, antenna positioning, hazardous area compliant gland termination, HART configuration of tank height and measuring range, echo curve analysis, false echo suppression, damping adjustment, and troubleshooting unstable readings caused by foam, turbulence, antenna contamination, grounding faults, or DCS mapping errors. Control Valve Experience

Experienced in installation, overhauling, calibration, testing, and troubleshooting of control valves including globe and ball type valves (Fisher and equivalent) used in oil & gas production facilities, compressor stations, and power plant applications.

Performed complete control valve installation as per P&ID, GA drawings, and hook-up diagrams including mechanical alignment, proper flange bolting with correct torque sequence.

Installation of pneumatic tubing, air sets (filter regulator), solenoid valves, I/P converters, and positioners.

Conducted pre-commissioning checks including air leak testing, instrument air pressure verification, and signal loop continuity from DCS to field device.

Experienced in full valve overhauling activities including disassembly of actuator and valve body, inspection of trim, plug, seat ring, stem, packing, bushings, and diaphragms, cleaning of internal components, replacement of worn-out parts, reassembly with correct alignment, and ensuring smooth stem movement without friction or binding.

Performed precise stroke testing using 4–20 mA loop calibrator to verify full travel (0– 100%) and correct valve positioning corresponding to control signal input.

Carried out analog and smart positioner calibration including zero and span adjustment, cam alignment, feedback linkage setting, auto-calibration procedures (for smart positioners), travel range configuration, split-range setup where applicable, and verification of output pressure to actuator.

Configured and diagnosed smart positioners using HART communicator including setting control parameters, tuning sensitivity, and monitoring valve diagnostics.

Hands-on experience in pneumatic actuator diaphragm replacement including safe depressurization, actuator disassembly, inspection for cracks or wear, installation of new diaphragm with proper seating, reassembly under correct spring compression, and functional testing to ensure smooth actuator response.

Conducted air supply quality checks including filter cleaning, regulator adjustment, and verification of instrument air pressure stability. Cable Installation, Glanding & Termination

Experienced in complete instrument cable installation works including laying of armoured and unarmoured instrument cables for analog (4–20 mA), digital, and control signal loops in oil & gas production facilities and compressor stations.

Performed cable pulling through cable trays, ladders, conduits, and underground ducts in accordance with cable schedule and layout drawings, ensuring proper segregation between instrument, control, and power cables to avoid electromagnetic interference. Ensured correct bending radius, mechanical protection, and clamping at specified intervals.

Conducted cable tray routing and dressing activities including tray alignment, support installation, tray joining, cover fixing where required, and neat cable arrangement with proper spacing to maintain accessibility and heat dissipation.

Verified compliance with hazardous area classification and ensured all installation activities met project specifications and international standards.

Carried out brass and stainless-steel cable gland installation including selection of correct gland size based on cable diameter, preparation of armoured cable ends, proper stripping of outer sheath and armour, installation of gland components, and secure tightening to maintain IP rating and explosion-proof (Ex) compliance.

Ensured correct armour earthing through gland body and bonding continuity to grounding system. Installed double compression glands for armoured cables in hazardous areas, maintaining flameproof integrity and environmental sealing.

Performed precise cable termination in Field Junction Boxes (JB), Marshalling Panels, and DCS Cabinets as per loop drawings and termination schedules.

Executed core identification, dressing, and termination on terminal blocks with correct polarity and numbering.

Ensured proper ferruling using standardized wire markers, accurate tagging of cables and cores, and adherence to colour coding standards.

Implemented single-point shield grounding practice to prevent ground loops and signal noise, ensuring shield continuity up to designated grounding terminals.

Conducted continuity verification and visual inspection before energization to ensure reliable signal transmission and system integrity. Continuity & Insulation Resistance Testing

Experienced in performing comprehensive cable testing and pre-commissioning activities to ensure integrity and reliability of instrument and control cables from field devices to control room systems.

Conducted end-to-end cable continuity testing from field junction boxes to marshalling panels and DCS cabinets using calibrated multimeters and continuity testers to verify correct core connections as per loop diagrams and cable schedules.

Performed core identification and verification of wire numbers at both ends to eliminate cross-wiring, swapped cores, or incorrect terminations.

Ensured correct polarity for analog signals (4–20 mA loops), digital inputs/outputs, to maintain signal accuracy and prevent equipment malfunction.

Carried out insulation resistance (IR) testing using calibrated megger testers at 500V and 1000V as per project specifications and cable rating.

Performed systematic testing between core-to-core and core-to-earth, including shield-to- earth verification, to detect insulation breakdown, moisture ingress, or cable damage.

Verified that measured IR values met acceptable standards before energization and commissioning.

Identified and rectified faults such as low insulation resistance, short circuits, open circuits, and grounding issues.

Maintained proper documentation including recording test results, cable numbers, test voltages applied, and IR readings.

Ensured all testing activities were performed in compliance with HSE procedures and permit-to-work requirements prior to system energization. Loop Checking & Commissioning

Experienced in complete loop checking and commissioning activities including field-to- DCS loop verification for analog and digital signals in oil & gas production and compressor facilities.

Performed systematic verification of instrument loops from field device to junction box, marshalling panel, and DCS cabinet to ensure correct tag number, cable number, terminal allocation, and polarity as per loop drawings and P&ID.

Conducted 4–20 mA signal simulation using calibrated loop calibrators to verify proper transmission of signals from transmitter to control system and from DCS output to final control elements.

Confirmed correct LRV/URV configuration and scaling in DCS, ensuring that process variables displayed accurately in engineering units.

Verified AI, AO, DI, and DO signals including correct indication, control action, and feedback response.

Performed alarm testing by simulating process conditions to validate High, High-High, Low, and Low-Low alarm set points, ensuring correct annunciation in DCS and proper alarm acknowledgment functionality.

Executed interlock and shutdown logic testing in coordination with control room operators and commissioning engineers

Verifying cause-and-effect matrices, trip functions, and safety shutdown sequences

(ESD) as per approved logic diagrams.

Identified and rectified signal mismatch, reversed polarity, incorrect scaling, and communication faults during testing.

Provided active support during plant start-up and commissioning activities including pre- commissioning checks, dry and wet run testing, live process monitoring, and fine-tuning of control loops to achieve stable process operation.

Assisted in PID loop tuning, valve response verification, and troubleshooting of field instrumentation issues during initial energization.

Ensured all testing and commissioning activities were completed in accordance with documentation requirements, safety procedures, and permit-to-work requirements. DCS & Control Systems

Experienced in operation and monitoring of Honeywell Experion DCS in oil & gas production facilities, power plant systems, and compressor stations, ensuring stable and safe plant operation through continuous supervision of process parameters, alarms, and control loops.

Performed real-time monitoring of pressure, temperature, flow, and level process variables, ensuring accurate display, trending analysis, and proper alarm handling in accordance with operating procedures.

Actively coordinated with field technicians and panel operators during maintenance, troubleshooting, and commissioning activities.

Hands-on experience in troubleshooting Analog Inputs (AI), Analog Outputs (AO), Digital Inputs (DI), and Digital Outputs (DO) including verification of 4–20 mA signal integrity, detection of signal loss, noise interference, grounding issues, scaling mismatch, and communication failures between field devices and DCS I/O modules.

Diagnosed faults related to open circuits, short circuits, incorrect termination, faulty I/O cards, and power supply interruptions.

Verified correct configuration of input types, engineering units, alarm limits, and output ranges within the DCS.

Conducted signal tracing from field instrument through marshalling cabinets to DCS cabinets to ensure accurate signal transmission and system reliability.

Provided PID tuning support for control loops involving control valves and process transmitters to achieve stable process control and minimize oscillations.

Assisted in adjusting proportional, integral, and derivative parameters in coordination with process engineers to eliminate hunting, overshoot, and slow response issues.

Experienced in safe signal forcing and simulation within Honeywell Experion DCS during maintenance and commissioning activities, ensuring proper authorization and adherence to safety procedures.

Performed input/output forcing for testing interlocks, shutdown logic, alarm verification, and functional testing of field devices while maintaining communication with operations team to prevent unintended process disturbances.

EQUIPMENT & TOOLS FAMILIARITY

HART Communicator

Fluke Loop Calibrator

Dead Weight Tester

Insulation Resistance Tester (Megger)

Digital Multimeters

Temperature Dry Block Calibrator

HSE COMPLIANCE

Permit to Work (PTW)

LOTO Procedures

Hazardous Area Compliance Awareness

Risk Assessment Participation

PERSONAL INFORMATION

Nationality : Libyan

Current Location : Tripoli, Libya

Years of Experience : 6+ Years

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