bakht zaman

Led operation and maintenance (O&M) for mechanical, HVAC, plumbing, and Fire Life Safety (FLS) systems across deep underground stations for the Riyadh Metro Project (Line 3).

Managed critical assets including 18+ air/water-cooled chillers, 130+ AHUs/MAUs, 8 cooling towers, and 180+ multi-stage pumps.

Directed diagnostic troubleshooting, root cause analysis (RCA), and corrective maintenance to maximize system availability and minimize downtime.

Oversaw a multidisciplinary team of 90 personnel, including engineers, supervisors, and technicians.

Fine-tuned HVAC setpoints and equipment schedules using BMS, ensuring continuous climate control and optimizing energy efficiency.

Enforced strict compliance with Saudi Building Codes (SBC), ASHRAE, and NFPA safety standards.

Key Responsibilities:

* Directed 24/7 operations and maintenance (O&M) for all HVAC, plumbing, and drainage systems across terminal buildings and airside facilities.

* Managed high-capacity chiller plants, air handling units, HVAC pumping systems, cooling towers, CRAC, VRF, and boilers.

* Managed the operation and maintenance of the domestic and clean drinking water supply network using VFD-operated vertical turbine pumps.

* Drafted and enforced Standard Operating Procedures (SOPs), method statements, risk assessments, and maintenance protocols.

* Managed and streamlined the monthly client billing lifecycle under SLA-based contracts.

Key Achievements:
* CAA Appreciation Award: Honored with a formal Appreciation Letter from the Pakistan Civil Aviation Authority (PCAA) for maintaining exceptional safety and O&M standards.

* 20% Boost in System Reliability: Solved long-standing water supply issues and recurring leaks by optimizing pressure setpoints across terminal building levels.

* Emergency Readiness: Successfully led emergency engineering teams during live utility incidents to isolate faults and restore critical services with minimal impact on flight schedules.

Key Responsibilities:
* Led the installation and supervision of HVAC, firefighting systems, sprinklers, FM200, and plumbing systems for a 300-bed hospital project.

* Reviewed critical engineering documentation, including Bills of Quantities (BOQ), shop/coordination drawings, and method statements for consultant approval.

* Verified hydraulic calculations, cooling/heat load calculations, pump head calculations, and external static pressure calculations compliant with ASHRAE, NFPA, SBC, and SMACNA standards.

* Supervised fabrication and installation of ductwork systems, chilled water piping networks, and heavy mechanical equipment.

* Coordinated and witnessed duct leakage tests, smoke/light leakage tests, and hydrostatic/pneumatic piping tests before commissioning.
Key Achievements:
* Ensured 100% compliance of incoming materials and site activities with approved drawings, project specifications, and international healthcare standards.

* Maintained zero-accident team performance by enforcing rigorous HSE requirements, regular site safety inspections, and daily toolbox talks.

Key Responsibilities:

* Reviewed and approved contractor shop drawings, multi-service coordination drawings, technical material submittals, and engineering calculations for strict alignment with project specifications.

* Supervised the on-site installation of ducting, piping, and heavy equipment including water-cooled chillers, cooling towers, AHUs, and firefighting pumps.

* Witnessed and signed off on all pre-commissioning field tests, including hydrostatic/pneumatic pressure testing for piping and duct leakage testing.

* Coordinated with electrical and civil teams to resolve spatial clashes and managed contractor snag lists.

Key Achievements:

* Successfully enforced rigorous adherence to ASHRAE 170, SMACNA, and NFPA standards to guarantee mandatory air change rates, differential pressure control, and life safety compliance across a 250+ bed facility.

* Conducted daily site inspections and material receiving checks, effectively issuing Non-Conformance Reports (NCRs) to rectify poor workmanship or sub-standard materials.