OPRC Level I. Oil containment booms

Transcription

1 OPRC Level I Oil containment booms

2 Aim Be able to distinguish between the various types of Containment Booms

3 Outline General Purpose of Booms Curtain Booms Fence Booms Beach Booms

4 What is boom? Barriers that are specifically designed to control/contain the movement of oil on the water s surface

5 What is boom? Barriers that are specifically designed to control/contain the movement of oil on the water s surface

6 Reasons for using containment booms Oil Containment/Concentration Deflection Protection

7 Basic Boom Usage Booms can be used in two ways: Static Mobile

8 Basic Boom Usage Static (anchored) Constrain the spread of the spill

9 Basic Boom Usage Static (anchored) Contain and concentrate the spill so as to aid recovery

10 Basic Boom Usage Static (anchored) Divert the oil towards areas better suited for its recovery from the water surface

11 Basic Boom Usage Static (anchored) Protection of sensitive areas

12 Basic Boom Usage Mobile Contain and concentrate the spill so as to aid recovery

13 Components of a Boom Freeboard Float Total Draft Skirt Ballast Tension Member

14 Key Parameters of Booms Freeboard Draught Buoyancy ratio

15 Boom Types - Curtain Booms Consist of an air or solid flotation chamber and a continuous underwater section hanging down.

16 Boom Types - Curtain Booms Components Rubber Impregnated Nylon Fabric Hollow Inflation Chamber Inflation Point Tension Member (A) Inflatable Boom Hoop Air Valve Airtight Bulkhead Buoyancy Chamber Skirt Deflated Tension Member Anchor Point Inflated (B) Self Inflating Boom

17 Boom Types - Curtain Booms Inflatable Boom Hollow Inflation Chamber Rubber Impregnated Nylon Fabric Inflation Point Tension Members

18 Boom Types - Curtain Booms Inflatable Boom

19 Boom Types - Curtain Booms Self Inflating Boom Hoop Airtight Bulkhead Air Valve Buoyancy Chamber Skirt Tension Member Anchor Point Deflated Inflated

20 Boom Types Summary Curtain Booms Flotation member filled with air, inert gas, solid foam or granulated foam Flexible skirt which can move independently of flotation member Buoyancy ratio between 5:1 20:1 Air filled booms: easy to clean but slower to deploy than solid booms Storage: small for air filled; large for solid foam filled booms

21 Boom Types - Fence Booms Solid Float Ballast

22 Boom Types - Fence Booms Consist of an air or solid flotation chamber and a continuous underwater section hanging down.

23 Boom Types - Fence Booms

24 Boom Types - Fence Booms

25 Boom Types - Fence Booms Types Centre Line Flotation Member Low cost; easy to operate; but can easily bend over due to low roll stiffness Outboard Flotation Member Outboard floats increase roll stiffness and are more stable External Tension Line Increased performance in strong currents; can be complicated to deploy and recover

26 Boom Types - Fence Booms Centre Line Flotation Member Fishplate and Connectors Stiffening Rods Styrofoam Blocks Water Level Flexible Screen Ballast Weights Section

27 Boom Types - Fence Booms Outboard Flotation Member Towing Bridge Barrier Vertical Stabilisers Both Sides

28 Boom Types - Fence Booms External Tension Line Oil-side Battens in Fabric Air Floating Bag External Tension Member Ballast Weight

29 Boom Types Summary Fence Booms Rigid in the vertical plane Low buoyancy ratio: 3:1 6:1 Cheap Easy and rapid to deploy Not suitable for open sea operations Poor performance in large waves High storage volume

30 Boom Types Inter-tidal Low tide Air Water

31 Boom Types Inter-tidal Air Water

32 Boom Types Inter-tidal High tide Air Water

33 Boom Types Beach Sealing Boom

34 Boom Types Summary Beach Sealing Boom Specially designed to keep the oil in the intertidal zone Unique cannot be replaced by other boom types Must be handled with care to prevent tearing the bottom Can be easily connected to containment booms