Preparing for hydrocarbon risks during decommissioning
Decommissioning a floating production unit introduces uncertainties around equipment removal, site conditions, and the chance of an unexpected hydrocarbon release. To support a planned decommissioning programme, an OSRL member requested equipment hire and preparedness input to help ensure their teams had the right arrangements in place if a release occurred.
Planning for complex operational constraints
The member had worked with OSRL for several years, so both parties had a shared understanding of the local operating environment. The decommissioning site presented logistical and visa challenges, and the work took place across the Christmas and New Year period. The organisation wanted confidence that equipment, personnel, and practical response options would be available if needed.
How support was delivered
OSRL prepared a Tactical Response Plan (TRP) outlining boom deployment options, tide and current conditions, sensitive areas, safety considerations, dismantling activity, and required resources. On site, OSRL supported briefings, equipment familiarisation, training with vessel crews, boom deployment drills, and follow-up sessions for new crews including safety officers.
Lessons for decommissioning teams
- Simple, operational TRPs can support quick decision-making
- Early equipment mobilisation helps reduce uncertainty
- On-board training provides familiarity before an incident occurs
- Crew changes require continuous training access
- Local constraints should be considered early
- Coordinating multiple crews benefits from structured drills
Supporting confidence through preparedness and training
The member felt ready to respond locally if a release occurred, supported by equipment availability and practical training. The full case study provides further detail on the TRP, vessel deployment exercises, and operational challenges.
