Slide 1: WA-27-R Tern-2 Plug and Abandonment Environment Plan
Information for relevant persons WA-27-R Tern-2 Plug and Abandonment Environment Plan Activity overview Consultation and feedback Santos is planning to undertake All petroleum activities in Santos meets this requirement subsea decommissioning Commonwealth waters by undertaking consultation in activi
Slide 2: Activity description
Activity description Activity details Timing • Earliest commencement of the activity is from mid 2024, however the activity can occur anytime from EP acceptance by NOPSEMA. • 5 year EP validity. Duration • Approximately 40 days. • The expected duration is a forecast and is subject to change based on
Slide 3: Activity purpose and approvals
Activity purpose and approvals The Tern-2 plug and abandon (P&A) decommissioning activities are required to remove equipment no longer required for production. An EP is being prepared for the planned decommissioning activities, under which all activity impacts and risks are proposed to be managed to
Slide 4: Defining the environment area for proposed activities
De昀椀ning the environment area for proposed activities Santos has undertaken an this activity is the outer of wind and weather conditions initial assessment to identify boundary of a worst-case derived from historical data. the environmental, social, marine diesel oil (MDO) spill The use of advanced
Slide 5: Environmental, social, economic and cultural features
Environmental, social, economic and cultural features Santos has undertaken a review of publicly available information to identify environmental, social, economic and cultural features and/or values that may be affected by activity impacts and risks. The outcomes of this review are summarised in Tab
Slide 6: Environmental, social, economic and cultural features continued
Table 2. Environmental, social, economic and cultural features ... continued Feature Description Within Within Public information review Operational EMBA Area Defence Designated defence activity areas. Yes Yes The Operational Area is located within two military zones: Darwin AAR and AEW&C, and PRD.
Slide 7: Environmental, social, economic and cultural features continued
Table 2. Environmental, social, economic and cultural features ... continued Feature Description Within Within Public information review Operational EMBA Area Protected Australian Marine Park (AMP). No Yes In Commonwealth Waters the EMBA overlaps the areas (nearest Oceanic Shoals AMP, Joseph Bonapar
Slide 8: Activity impacts and risk management
Activity impacts and risk management We have summarised in Table 3 the potential environmental impacts risks and associated management measures for the proposed activity. These aspects will be risk-assessed with the Environment Plan on a case-by-case basis. Table 3. Activity impacts and risk managem
Slide 9: Activity impacts and risk management continued
Table 3. Activity impacts and risk management ... continued Physical presence and interaction with other marine users – vessel operations Description of potential impacts Compliance with the following key management measures Interaction with other marine users from vessel operations may occur • No 昀
Slide 10: Activity impacts and risk management continued
Table 3. Activity impacts and risk management ... continued Operational vessel discharges Description of potential impacts Compliance with the following key management measures Potential impacts may occur in the Operational Area from the following • Deck cleaning and product selection. operational d
Slide 11: Spill response and unplanned hydrocarbon release risks
Table 3. Activity impacts and risk management ... continued Spill response operations Description of potential impacts Compliance with the following key management measures In the event of a hydrocarbon spill, response strategies will be • In the event of a hydrocarbon spill, the Oil Pollution Emerg
Slide 12: Unplanned non-hydrocarbon and chemicals release risks
Table 3. Activity impacts and risk management ... continued Unplanned non-hydrocarbon and chemicals release (surface liquids) Description of potential risks Compliance with the following key management measures Sources of risk from an accidental release of non-hydrocarbon and • Dropped object preven
Slide 13: Invasive species and marine user interaction risks
Table 3. Activity impacts and risk management ... continued Unplanned introduction of invasive marine species (IMS) Description of potential risks Compliance with the following key management measures Introduction of invasive marine species (IMS) may occur due to: • Anti-foulant System. • Biofouling
Slide 14: Consultation
Consultation Consultation provides Santos with an opportunity to receive feedback from authorities, persons and organisations whose functions, interests or activities may be affected by proposed petroleum activities. This feedback helps us to re昀椀ne or change the management measures we are planning