David Joshua Capellan

• Performs mechanical and electrical safety inspections and verification activities, including vibration test, functionality test, earthing bond test, insulation resistance test, continuity test, and Portable Appliance Testing (PAT).
• Delivers specialized onshore and offshore Oil & Gas standard-based trainings, including Electrical Habilitation Level 1 and Level 2, ensuring compliance with NF C 18-510, IEC, and NFPA 70E, and certify issuance of authorization certificates for personnel working on or near Low/High Voltage installations with respect to zones.
• Facilitates and develops internal HSE training programs to the company, covering OPITO Basic H2S, Permit to Work (PTW), Lockout/Tagout (LOTO), Working at Height (WAH), and other industry relevant safety courses during worker’s idle time.
• Serves as a Certified Instructor of North Oil Company (NOC), delivering the Incident-Free Induction course to all North Oil Company Staff, workers, and its vendors mobilizing to Al Shaheen Oil Field - Offshore.

• Performed detailed inspections of commercial and industrial mechanical systems including HVAC, Fire Protection, and Gas Suppression systems, and identifying non-compliance, and quality issues to ensure safe and efficient system operations.
• Conducted safety Inspections including Legionella Risk Assessment across Metro stations (Red, Gold, and Green Lines) in accordance with BS 8580 and ACOP L8, and assisted in the inspection of fall arrest systems and permanent lifelines for Metro and Tram facilities in Doha, Qatar.
• Delivered Electrical Habilitation Level 1 and Level 2 training (also known as “Preparation for the Authorization of Electricians Operating in Low and/or High Voltage”) covering EL/B080, EL/B081, EL/B090, and EL/B091 to major oil and gas operators including North Oil Company, Qatar Energy, and TotalEnergies, and conducted competency assessments to issue authorization recommendations in accordance with the NF C 18-510 Electrical Safety Standard zoning requirements.
• Prepared techno-commercial proposals, tendered documents, and cost estimates, while ensuring constant collaboration with clients and other engineering disciplines.

• Conducted and supervised planned preventive maintenance (PPM) across mechanical systems and assets in Aspire Dome, ensuring compliance with OEM guidelines and industry best practices, while overseeing corrective maintenance (CM) activities following equipment failures to maintain system reliability.
• Assisted in the operation, maintenance, and troubleshooting of HVAC systems including AHU, FCU, DX system - split type and wall-mounted air-conditioning units, CW/CHW pumps, field devices, and other systems including fire and jockey pump, motors, generators, smoke and fire detectors, lifts, plumbing, and exhaust fans.
• Monitored, analyzed, controlled, and optimized system performance, run-time, parameters, and energy consumption of MEP systems including HVAC, fire protection, and other systems through the Building Management System (BMS).
• Administered service requests via CAFM and coordinated it with end users, facility teams, and stakeholders to ensure timely resolution and meet end user satisfaction.

Turned over projects:

 Fire Protection System for Existing Building٠ Apr 2020 - Apr 2021
Led: Fire Protection & Gas Suppression System - NN100

 Phase 2 TRCF Expansion Building · Feb 2019 - Mar 2020
Led: CHW & CW System, HVAC, Fire Protection System, and Plumbing System

 Phase 3 Wastewater Treatment Plant · Sept 2018 - Jan 2019
Led: HVAC, Process Piping, and Minor Civil Works


• Oversaw and led three (3) industrial projects for our client JX Nippon Mining & Metals Philippines in coordination with Japanese Managers, while directing trade workers including supervisors, foremen, tinsmith, welder, HVAC technicians, plumbers, pipefitters, fabricators, insulators, and helpers in project execution.
• Managed a team of trade workers by providing them with daily tasks, workplans, targets schedules, methodologies, while resolving site conflicts such as pipe clashes, rerouting, MEP integration, manpower allocation, existing structures, technical and design issues, lack or shortage of materials, quality issues, and safety concerns, to ensure smooth project execution and efficient resource and manpower utilization.
• Conducted quality inspections and pre-commissioning and testing of all MEP systems, such as for CHW/CW system, fire protection and gas suppression system, and process piping, with welded joint G.I. pipes via non-destructive test spray (NDT) and checking of shop drawings and P&IDs, as for leak test via hydraulic test or pneumatic test, then pipe purging. While for HVAC, leak test is done via smoke or light test, air volume or airflow/velocity test via anemometer, and air balance test. For plumbing system, via gravity test to determine leakages and ball test for sloping.
• Led implementation of international standards and codes including NFPA 13/14/20/25 and 72, UL, JIS, ASHRAE, SMACNA, ASME, IPC, and local regulation for all MEP system including chilled water and condenser water system, DX system, fire protection and gas suppression system, HVAC, plumbing system, and process piping.
• Analyzed shop drawings and P&IDs to develop material takeoff (MTO), verify material requirements from project specifications, and coordinate actual site condition to engineering design team for revisions to ensure installation readiness.
• Prepared progress reports, method statements, and project closeout documents including submittals, as-built drawings, snagging list, and T&C documentation.