# Data Centre Engineers: The Building Doctors Maintaining Digital Infrastructure Mechanical engineers ensure critical power and cooling systems prevent downtime for global digital services. - **Source:** [The Straits Times – Singapore](https://www.straitstimes.com/singapore) - **Published:** 2026-11-10 - **Topic:** [technology](https://brifing.si/c/technology) - **Original article:** - **On Brifing:** https://brifing.si/s/d1f47b38-0bd4-4bb9-955a-21cf86c3890e ## The Role of Building Doctors Keith Fong, a 29-year-old mechanical engineer, works as a team lead at the STTGDC data centre in Singapore. His department manages the physical infrastructure, ensuring that power and cooling systems remain operational around the clock. They act as building doctors, monitoring every environmental fluctuation to prevent any potential service downtime. ## Critical Infrastructure Requirements Data centres house servers that enable essential services like banking and online shopping. Maintaining these facilities requires strict temperature and humidity control, typically between 18 and 27 degrees Celsius. Engineers must prevent condensation to protect electrical equipment while avoiding overly dry conditions that could trigger dangerous electrostatic discharges during daily operations. ## AI Workloads Increase Demand The rise of artificial intelligence has significantly increased power requirements for modern server racks. While conventional racks consume 2kW to 3kW, AI-focused hardware can demand up to 20kW per rack. This shift forces engineers to manage much higher heat outputs, requiring more robust cooling systems and constant vigilance to maintain stability. ## Resilience and Backup Systems To ensure zero downtime, the facility employs redundant systems, including backup generators and uninterruptible power supplies. If a power outage occurs, these systems activate instantly to keep servers running. Engineers also perform routine inspections, walking over 10,000 steps daily across six floors to check for abnormalities in sound, smell, or temperature. ## Advanced Detection and Safety The facility utilizes sophisticated tools like the Very Early Smoke Detection Apparatus (VESDA) to identify microscopic smoke particles before conventional detectors trigger. Beyond technical monitoring, the team is trained as emergency responders, capable of administering first aid and using automated external defibrillators if a medical or fire emergency occurs on-site. ## Remote Hands and Support Beyond internal maintenance, the team provides remote hands services for global customers who cannot visit the site. This involves troubleshooting equipment, investigating faults, and performing physical checks on behalf of clients. Such support is vital for maintaining the stability of IT systems that belong to external companies renting colocation space. ## Efficiency and Sustainability Goals STTGDC operates under strict regulatory limits regarding water and power usage. The company recently replaced ten rooftop chillers with models 39% more energy-efficient, a project that required three years of planning. Currently, approximately 83% of the electricity used across their global data centres is sourced from renewable energy to improve sustainability. ## The Digital Economy Backbone Data centres are now classified as critical services, similar to hospitals or traffic lights. When these facilities operate without interruption, the broader digital economy functions smoothly. For engineers like Fong, the absence of alarms and the seamless flow of digital transactions provide a sense of professional satisfaction in a high-pressure environment. ## Sources covering this story - https://www.straitstimes.com/singapore/jobs/data-centre-building-doctor-he-keeps-power-cooling-systems-running — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._