A409336 - Report - MRIR - Woodside - WA-34-L Subsea Installation

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 Burrup PTY LTD reported a recordable environmental incident during subsea installation activities on the WA-34-L project using the vessel Nor Australis in February 2015. On 25 February 2015, approximately 50 litres of treated monoethylene glycol (MEG) was discharged to the marine environment during flexible flowline installation, breaching Environmental Performance Outcome 18 which prohibits minor spills greater than 10 litres. The discharge contained MEG treated with additives Hydrosure and Clear Dye. The activity was immediately ceased and the flexible returned to surface. Investigation revealed a missing seal plate between the termination head and low pressure cap. The equipment was recovered and the vessel returned to shore where the seal plate was installed to prevent recurrence.