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HazMat/WMD Technician for Surface Transportation Training Support Package November 2014 Module 13: Containment and Confinement.

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Presentation on theme: "HazMat/WMD Technician for Surface Transportation Training Support Package November 2014 Module 13: Containment and Confinement."— Presentation transcript:

1 HazMat/WMD Technician for Surface Transportation Training Support Package November 2014 Module 13: Containment and Confinement

2 HazMat/WMD Technician for Surface Transportation Introduction 2 This module defines the differences between confinement, containment and spill recovery. − Methods − Advantages − Disadvantages Materials that could be utilized at an incident involving a HazMat/WMD

3 HazMat/WMD Technician for Surface Transportation Enabling Learning Objectives Define the difference between confinement and containment 13-2 Identify the basic methods for confining substance spills on land and explain their advantages and limitations 13-3 Identify the basic methods for confining spills of sinking, floating, and soluble substance spills on water and explain their advantages and limitations

4 HazMat/WMD Technician for Surface Transportation Enabling Learning Objectives Define the purpose for and the procedures, equipment, and safety precautions used with each of these methods, and demonstrate the ability to select methods appropriate for a given HazMat/WMD incident.

5 HazMat/WMD Technician for Surface Transportation Enabling Learning Objectives 5  Diking and damming  Pneumatic equipment  Excavation  Sealed booms  Overflow dam  Diversion  Weir dam  Diversion channels  Underflow dam/weir  Retention  Booms  Sorbents − Natural −Synthetic 13-5 Demonstrate the proper use of the methods listed above

6 HazMat/WMD Technician for Surface Transportation Confinement-Containment-Spill Recovery 6 Confinement Containment Spill recovery

7 HazMat/WMD Technician for Surface Transportation Confinement vs. Containment 7 Confinement MethodExample Diking/Damming Use soil, sand, or clay to stop or divert flow ExcavationDig trench, pit, or ponds to collect or treat the product BoomingUse straw or commercial booms to collect the product PumpingPump the product to a container or pit to collect or treat it Vapor suppressionUse foam or water fog to reduce or redirect vapors Containment Method/SituationExample PluggingHole, tear in container Wedges, plugs, screws, etc. PatchingHole, tear in container Patch kit, epoxy, vetter bag, etc. Capping/ repairing Leaking valve Valves, safety devices Chlorine or Midland kit Replace/repair

8 HazMat/WMD Technician for Surface Transportation Confinement 8 Main purpose reduce the area of contamination Processes vary with location Compatibility Incompatibility

9 HazMat/WMD Technician for Surface Transportation Confinement on Land 9 Product spills on land can move in several directions at the same time − The material movement depends on many other factors, such as: Soil type, such as how porous it is Soil condition, dry, wet, snow covered, covered with ice or frozen Slope Proximity of manholes, drains, culverts Presence of asphalt, concrete, or tile Presence of obstructions.

10 HazMat/WMD Technician for Surface Transportation General Confinement Operations 10 Responders must stay clear of the HazMat/WMD Responders using hand tools may need some level of protection Heavy equipment - ignition for a flammable liquid or gas. Equipment operators-OSHA "Skilled Support Personnel" and their required levels of protection and training in CFR (q)(4).

11 HazMat/WMD Technician for Surface Transportation Materials Compatibility 11 Fire hose (effective on a flat surface.) Foams (these do not absorb spilled material and thus add less contaminated material to dispose of later.) Bucket, recovery drum, or other similar open top container Sorbents socks Pumps or vacuums

12 HazMat/WMD Technician for Surface Transportation Diking/Damming 12 Diking/damming will increase the volume of contaminated material requiring cleanup. Equipment needed may include: − Shovels and other hand tools − Front-end loader − Backhoe − Dump truck − Man-way covers − Vetter bags, to block culverts

13 HazMat/WMD Technician for Surface Transportation Recovery Operations 13 Recovery Operations for confinement is an offensive action which seals product inside an outer container. A "containment" action, such as patching or plugging, is usually required to keep much of the product in its original container as possible.

14 HazMat/WMD Technician for Surface Transportation Recovery Operations 14 Make sure that the recovery container is compatible with the product and original container. It also must be large enough to hold the container easily, without damaging it.

15 HazMat/WMD Technician for Surface Transportation Overflow Dam 15 An insoluble product with a specific gravity > 1.0 sink Overflow dam A weir dam Substance, or simply hold the substance back Up stream sidePlastic Sheeting to protect dam

16 HazMat/WMD Technician for Surface Transportation Overflow Dam

17 HazMat/WMD Technician for Surface Transportation Underflow Dam 17 An insoluble HazMat/WMD with a specific gravity <1.0 will float. Spills of over 5,000 gallons impractical in inclement weather. Rainfall can wash away an earthen dam. Up stream side Plastic Sheeting to protect dam

18 HazMat/WMD Technician for Surface Transportation Underflow Dams 18

19 HazMat/WMD Technician for Surface Transportation Booms 19 Containment booms have four basic elements: − An above-water freeboard − A flotation device − A below-water "skirt” − A "longitudinal support”

20 HazMat/WMD Technician for Surface Transportation Basic Types of Booms 20 Fence booms Round or curtain booms Non-rigid or inflatable booms Floating booms

21 HazMat/WMD Technician for Surface Transportation Using Booms 21 Perform well in gentle seas or moving water Rough and choppy water is likely to contribute to boom failure. Lengthening a boom's skirt or freeboard can aid in containment. Will not operate properly waves are higher than one meter or 39” or currents faster than one knot per hour or 1.15 miles per hour.

22 HazMat/WMD Technician for Surface Transportation Sorbents 22 Sorbents – Found in two basic types Absorbents Adsorbents

23 HazMat/WMD Technician for Surface Transportation Sorbents 23 Natural organic sorbents - organic products Peat moss or straw Cellulose fibers or cork Corn cobs Chicken or duck feathers Adsorb between 3 and 15 times weight in water Difficult to collect after spread on the water Can overcome the sinking issue

24 HazMat/WMD Technician for Surface Transportation Sorbents 24 Natural inorganic sorbents − Mineral compounds Volcanic ash or perlite; Vermiculite or zeolite − Adsorb from 4 to 20 times their weight in oil or HazMat/WMD are inexpensive − These types of sorbents are not used on the water's surface.

25 HazMat/WMD Technician for Surface Transportation Synthetic Sorbents 25 Designed to adsorb liquids onto their surfaces Include cross-linked polymers and rubber materials absorb liquids into solid structure, causing material to swell. Absorb up 70 times their own weight − Polypropylene − Polyethylene − Polyurethane − Polyester

26 HazMat/WMD Technician for Surface Transportation Sorbents Characteristics 26 Rate of absorption Rate of adsorption Retention Ease of application

27 HazMat/WMD Technician for Surface Transportation Containment Dispersion Solidification Vacuuming 27

28 HazMat/WMD Technician for Surface Transportation Containment 28 Maximum potential gains must be worth the risk. Even under the best of circumstances, containment involves risk Minimal potential risks Choose the best chance of success with the least amount of risk. Plan the procedure

29 HazMat/WMD Technician for Surface Transportation Containment 29 Container Condition Considerations: Are all the closures really closed? Will the weight of the product tear a larger hole in an already weakened container? Can you move the container? How much does the container weigh? Will the lifting or moving devices cause additional damage to the container?

30 HazMat/WMD Technician for Surface Transportation Containment 30 Do the simplest safest fix Upright the container Close the valve Can you stop the leak simply by reorienting the breech toward vapor space? If the container is damaged, what caused it? Is this the correct container for the product? Is the product eating through the container's walls? Has the container deteriorated? Is there more than one hole?

31 HazMat/WMD Technician for Surface Transportation Plugging Techniques Non-reactive wedges, cones and devices Magnetic patches Mechanical patches Foam plugs Bladder wraps Adhesive patches

32 HazMat/WMD Technician for Surface Transportation Wedges, Cones, Bags, Drums

33 HazMat/WMD Technician for Surface Transportation Plug and Patch Compatibility 33 After compatibility has been determined, the only limitation is your imagination. A hardware store is a great place to shop for plugging and patching equipment.

34 HazMat/WMD Technician for Surface Transportation Plugging and Patching 34 Is the hole in the liner at the same location as the leak? Is the product leaking between the liner and the shell? Does the container require more than one plug or patch? Any repair you make must not damage the liner. A leaking container over-packing or transfer to another container.

35 HazMat/WMD Technician for Surface Transportation Plugging and Patching 35 Plugging or patching may make the breach worse. Lower the container pressure, if possible Choose plugging or patching compatible with the product Make sure the patch or plug is larger than the opening Think through each step of the procedure before you begin.

36 HazMat/WMD Technician for Surface Transportation Plug and Patch Materials 36 Materials for plugging and patching are almost limitless: Is the material compatible with the material in the container? Is the material available in sufficient quantity to do the job?

37 HazMat/WMD Technician for Surface Transportation Plug and Patch Materials 37 Is more than one type of material required? How much time from application until the container can be moved? How long will the plugging and patching material last once applied?

38 HazMat/WMD Technician for Surface Transportation Conclusion 38 Participants were given information to provide the ability to: − Define confinement and containment − Identify the basic methods for confining spills and explain their advantages and limitations − Identify the basic methods for confining spills of sinking, floating, and soluble substance spills on water and explain their advantages and limitations − Participants were able to practice various procedures on simulated leaking container, releases, and spills. − Define the purpose for and the procedures, equipment, and safety precautions − Demonstrate the proper use of the methods listed above.


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