Case Study
Calibre conducted annual AC & DC uninterruptible power supply (UPS) system maintenance and healthcare checks on safety-critical UPS systems aboard an offshore oil and gas platform. These play a vital role in maintaining the platform’s operational safety and power continuity.
Calibre delivered a comprehensive maintenance package, ensuring all critical AC and DC UPS systems were operating at peak performance and aligned with manufacturer and regulatory standards. The service process included:
Online As-Found Testing
Measured input, battery, and output voltages, current, and frequencies
Captured oscilloscope traces of rectifier output voltage before the filter circuit
Conducted load voltage/current and transfer tests to confirm AC UPS functionality
Offline Dead Inspection
Performed detailed internal component inspections
Documented any physical discrepancies or wear
Offline Live Alarm Testing
Verified alarm activation at manufacturer-set thresholds (voltage and earth fault)
Simulated fault conditions to ensure system response matched design expectations
Return to Service
Carried out final online as left measurements to confirm full system integrity and performance
Any components requiring replacement, either due to failure or reaching end-of-life as per the manufacturer’s guidelines, were pre-ordered and securely stored, ready for deployment on the next scheduled offshore maintenance visit.
By delivering thorough, compliant, and forward-planned maintenance checks, Calibre supported the platform’s operational safety and long-term reliability of its AC & DC UPS infrastructure, which is essential for the continuity of offshore oil and gas operations.
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