NTF11891 – 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 at the Okha FPSO on 26 November 2022 involving failure of low-pressure and high-pressure flare header purge flow meter alarms during routine yearly maintenance testing. The alarms failed to enunciate at their set points, constituting non-conformance with performance standard PS P25.1. No gas or liquid releases occurred. Purge flow remained nominal. NOPSEMA escalated the incident to Level 1 investigation on 28 November 2022. Woodside submitted the initial incident report on 29 November 2022, with ongoing investigation to determine root causes and corrective actions. Interim mitigation included implementing operator rounds for manual flow meter monitoring.