A366346 - Report - MRIR - Woodside - Exmouth Sub Basin Gas Well Program

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.

This Recordable Environmental Incident Monthly Report documents a dropped object incident involving Woodside Energy Limited and Mitsui Exploration and Production Ltd during the Exmouth Sub-Basin Gas Well Program in May 2014. On 23 May 2014, a 30kg section of deck grate fell into the sea from the Deepwater Millennium (MODU) during operations to land the Lower Marine Riser Package onto the BOP transporter. Vessel motion caused a hydraulic swing gate to move outward, dislodging the grate. The operator conducted immediate mitigation including ROV dives to inspect the riser and BOP and a 360-degree seabed survey within a 100-metre radius that failed to locate the grate, suggesting it was washed away by wave action. Corrective actions included installing secondary retention on the grate, with verification of the installation required.