Woodside Submission - IVT14016 - DEECA Minerva Monthly Recordable - 2025-05-02_Redacted

Written by Claude Haiku 5.5 from the extracted text on 14 Oct 2026. It can miss or misread redacted and scanned pages. Check the source before relying on it.

This document is a Woodside Energy monthly recordable environment incident notification, covering April 2025, for decommissioning of the Minerva Pipeline (VIC/L22, Pipeline Licence VIC-PL33) under the Minerva Decommissioning and Field Management (State) Environment Plan. It reports that piggyback clamp components were lost to the marine environment during pipeline cutting between 16 April and 2 May 2025, with an estimated 269 components (about 99 kg of polypropylene) released in Victorian State Waters. Cumulative releases across Commonwealth and State Waters since 12 January 2025 are estimated at 429 components (186 kg), about 2.6% of clamps on the 4.5 km recovered to date. Stated causes include clamps reaching the end of their 20-year design life and stored energy in the injection line and umbilical breaking straps. Responses include halting operations, coastal surveys by a consultancy, drift modelling, a revised cutting method, and an environmental risk assessment concluding risks are ALARP. The incident was also reported to NOPSEMA on 15 April 2025 for Commonwealth-area losses.