A worker was hospitalized in critical condition on Thursday after suffering a medical event at the bottom of a 20-metre-deep fuel storage tank at the former Marsden Point oil refinery. Emergency crews, including a rescue helicopter and fire brigades, responded to the site—now operated by Channel Infrastructure—at approximately 3.30pm. WorkSafe has confirmed it will not investigate the incident, as officials determined the emergency was caused by a medical event rather than a workplace accident.
How the rescue operation unfolded
The operation required a multi-agency response due to the depth of the tank and the initial classification of the call. According to a Northern Rescue spokesman, the worker was located inside a large, roofless, and disused fuel storage tank measuring 15 to 20 metres deep. While the helicopter was initially dispatched with plans to winch the man out, ground-level access had been established by the time the aircraft arrived. Two critical care paramedics were winched onto a nearby road, allowing them to provide medical support alongside St John Ambulance personnel. The helicopter later landed in a designated port area, and the patient was transported to Whangārei Hospital.
Why the response involved fire crews
The emergency triggered a wider response than a typical medical call because of the environment where the worker was found. St John confirmed that a rapid response unit, an ambulance, and an operations manager attended the site. Simultaneously, fire crews from the Ruakākā and Whangārei brigades were dispatched. This occurred because the incident was initially coded as a potential hazardous substance emergency, a standard precaution for deep-tank environments at industrial sites.
What happens next for site operations
Because WorkSafe has officially categorized the incident as a medical event rather than a workplace accident, it is unlikely that a formal safety investigation will follow. Channel Infrastructure has confirmed the tank involved was disused and not part of the current infrastructure upgrades intended to increase national fuel reserves. Moving forward, the facility may continue its standard operations without regulatory intervention, as the event has been linked to the worker’s health rather than a failure of site safety protocols or infrastructure integrity.
