Environmental statement - Flyndre and Cawdor - Maersk Oil

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Physical presence Semi submersible drilling rig and support vessels. Noise and vibration. Positioning of semi‐sub rig using anchors and chains Support vessel movements. Daily supply vessels anticipated. Sources include semi‐sub drilling operations & support vessels. The drilling rig will have an impact on the seabed due to the anchor spread. Presence of a rig and the increase in associated vessel movements has the potential to impact other users of the sea Likelihood Consequence Risk 5 1 Low Generates elevated sound levels which can affect the behaviour of fish and marine mammals in the area. Likelihood Consequence Risk 5 1 Low Flyndre and Cawdor Development Environmental Statement Appendix B – Environmental Impact Assessment Rig moves will be minimised. Other users of the area will be notified. The rig will be present over a relatively short period of time for each well. Short term and very localised impact with the area expected to rapidly restore/ recolonise. No long term impacts to other users of the sea. None envisaged B ‐ 4 D/4114/2011
Flyndre and Cawdor Development Environmental Statement Appendix B – Environmental Impact Assessment Minor accidental events Chemical spills. Chemical storage‐ accidental spills, leaks, containment damage. Lube and hydraulic oil spills Accidental spillage of oils may result from rupture/corrosion of drums in storage; loss of containment during decanting; rupture of hydraulic hose in use. Spill may enter drainage system and be discharged to sea May result in a variety of impacts including increased chemical or biochemical oxygen demand, toxicity, persistence, bioaccumulation in animals Likelihood Consequence Risk 2 2 Low Minor spillage that would impair water quality and marine life in immediate vicinity of discharge. Likelihood Consequence Risk 2 2 Low Optimised quantities procured & stored. COSHH, Task Hazard Assessments are completed and MSDS sheets are available. All transfer operations suspended in rough weather. All bulk hoses and connections must be inspected before and after use by competent personnel. Chemicals stored in tote tank area. OPEP is implemented as appropriate in the result of a spill as per Emergency Response Process. Statutory reporting of all spills. Trained personnel undertake decanting operations. Storage tanks and hoses are subject to an inspection and engineering maintenance strategy. OPEP is implemented in the event of a spill as per Emergency Response Process. None envisaged. None envisaged D/4114/2011 B ‐ 5
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Figure 1‐2 Flyndre and Cawdor Dev
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1.5. ENVIRONMENTAL MANAGEMENT Flynd
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Environmental statement - Flyndre and Cawdor - Maersk Oil

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