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Unit 5.4 MISSION SPECIFIC: Leak, Spill and Fire Control

Unit 5.4 MISSION SPECIFIC: Leak, Spill and Fire Control. Objectives. Identify various equipment and supplies available to the operations level responder for conducting product control activities.

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Unit 5.4 MISSION SPECIFIC: Leak, Spill and Fire Control

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  1. Unit 5.4 MISSION SPECIFIC: Leak, Spill and Fire Control

  2. Objectives • Identify various equipment and supplies available to the operations level responder for conducting product control activities. • Identify fire suppression foams and equipment available for suppressing hazardous materials fires. • Describe the proper process for developing a finish application of fire suppression agents provided by the AHJ. • Describe the various defensive spill control techniques that can used for control of spills of solids, liquids and gases. • Describe the proper role and use of remote shut-offs.

  3. Spill Control • Considerations • Where is it going? • What is vulnerable • Where can we stop it • Do we have the resources

  4. Spill Typing • Gas/Air • Dispersion, dilution, absorption • Solid/Surface • Blanketing • Liquid/Surface • Blanketing, vapor suppression • Damning, diking, diverting, retention • Liquid/Water • Over and underflow damn • Booming • Diverting • Retaining

  5. Booming • Absorbent boom • AKA: oilophilic (oil loving) • Useful for membranes on water with no current • Of little use in moving water • Containment boom (curtain) • Weighted curtain • Contain or divert product on water. • Ineffective in currents greater than three knots • entrainment or slop-over happens in faster currents

  6. Video “Spill Control”

  7. Leak Control • Most require special training and equipment • LPG • NG • Remote shut offs

  8. Fire Control • Five questions • What is burning? • Potential impacts of suppression? • BLEVE potential? • Harm if allowed to burn? • Can product flow be controlled?

  9. Possible Tactics • Extinguish • Controlled burn • Protect exposures • Withdraw • Combination of these four tactics

  10. Firefighting Foam • Material burning • Hydrocarbons • Polar • Works by • Separating • Cooling • Suppressing or smothering

  11. Foam Characteristics • Hydrocarbon/polar solvent/multi-use • Protein/synthetic based • Expansion ratios • Re-ignition/burnback resistance • Heat resistance • Protection from freezing • Compatibility with dry chemical agents • Viscosity • Fuel shedding capability

  12. Foam Types and Use • Protein foam 3-6% • Flouro-protein foam 3-6% • AFFF 1-3-6% • Class A foams • High Expansion (High X) foams

  13. Application Rates • According to manufacturer • Ignited spill • Square footage of spill time application rate • Most commonly • 0.10 gpm/sq foot for petroleum (<10% ETOH) • 0.16 gpm/sq foot for polar solvents • Non-ignited spill less required

  14. Fire Control • Exposure control • Hydrophoric materials • Sodium, Potassium • Carbides + water = acetylene • Hydrides + water = hydrogen gas • Nitrides + water = ammonia gas • Phosphides + water = phosphine gas

  15. Fire Control • Withdrawal • BLEVE potential • Fires involving explosives • Unacceptable risks • Overwhelming conditions • No win scenarios

  16. Summary • Control based upon spill type • Leak control limited to remote shut-offs at operations level • Fire control • Always controlled burn may be your best option • Fire fighting foams

  17. Activity 5.4 Use of Organization’s Spill and Fire Control Techniques

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