NTF11961 – Incident details

Written by Claude Haiku 4.5 from the extracted text on 10 Jul 2026. It can miss or misread redacted and scanned pages. Check the source before relying on it.

Woodside Energy Ltd notified NOPSEMA of a dangerous occurrence on the CWLH OKHA FPSO (Western Australia) involving failure of a safety-critical HVAC fire damper during routine three-monthly testing on 26 December 2022. The pump room exhaust fan #3 fire damper failed to close and meet its performance standard. The immediate cause was identified as insufficient lubrication and external foreign material buildup creating friction that prevented the Frangible Trigger Valve from operating. Woodside exercised, lubricated, and retested the damper, which subsequently passed. NOPSEMA escalated the incident to Level 1 investigation on 4 January 2023. The initial report was received 28 December 2022 and reviewed 12 January 2023, confirming classification as a dangerous occurrence involving damage to safety-critical equipment.