Structural Collapse Rescue NFPA 1670 Awareness Level
Transcript of Structural Collapse Rescue NFPA 1670 Awareness Level
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Structural Collapse RescueNFPA 1670 Awareness Level
Kansas Search & RescueResponse SystemGeneral Training Requirement
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NFPA 1670Structural Collapse Rescue
(1) Recognizing the need for structural collapse search and rescue
(2) Identifying the resources necessary to conduct structural collapse search and rescue operations
(3) Initiating the emergency response system for structural collapse incidents
(4) Initiating site control and scene management
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NFPA 1670Structural Collapse Rescue
(5) Recognizing the general hazards associated with structural collapse incidents, including the recognition of applicable construction types and categories and the expected behaviors of components and materials in a structural collapse
(6) Identifying the types of collapse patterns and potential victim locations
(7) Recognizing the potential for secondary collapse
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NFPA 1670Structural Collapse Rescue
(8) Conducting visual and verbal searches at structural collapse incidents, while using approved methods for the specific type of collapse
(9) Recognizing and implementing a search and rescue/search assessment marking system, building marking system, victim location marking system, and structure marking system, such as the ones used by the FEMA US&R System
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NFPA 1670Structural Collapse Rescue
(10) Removing readily accessible victims from structural collapse incidents
(11) Identifying and establishing a collapse safety zone
(12) Conducting reconnaissance (recon) of the structure (s) and surrounding area
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Disasters can be man made or natural
May 18,th 1980, eruption of Mt. St. Helens
Oklahoma City Bombing, April 19, 1995
9/11 – World Trade, Pentagon
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They can be relatively small scale or cover large areas
Sioux City Airliners Crash
Mississippi Valley Flood
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Resources
Local Resources
State Resources
Federal Resources
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Local Resources
Fire Department Law Enforcement Public Works Volunteer search and rescue Community Disaster Response Light rescue teams from business and
industry
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State Resources
State Police National Guard
Governor can request a declaration of disaster from the President
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Federal Resources FEMA (Federal Emergency Management Agency) US&R task forces comprised of four components
– Search – Rescue– Medical – Technical
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Four Phases of StructuralCollapse Rescue
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Phase ISize up and Recon
Depending on event can last few minutes to several hours
Find out how big the problem is Organized survey of the damaged area What resources are available? What can we do about the problem?
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Prioritize the problems
First priority is yourself Second is your co-worker Third is other people Fourth is property
Prioritization allows you to determine which problems to solve first
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Establish Command and Control
Designate a command spot Remain available by staying in the
command post
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Rescue and removesurface victims
50% of all survivors are surface victims- injured but not trapped, Deal with them first
Remove them from the hazards Keep people from entering structures, allow
structures time to settle Organize spontaneous rescue teams and direct
them where they will do the most good
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Phase II
Begins when rescue teams arrive and ICS has been established
Use info. gathered to search the likely survival places
Use location methods, searching outside by voice, listening devices, dogs, heat sensing and fiber optics
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Phase II (cont.)
Search the voids as a last resort Enter those voids that
have highest likelihoodof survivors
Shore as you go Monitor for hazards 30% of all survivors in Structural collapse are
involved in non structural entrapment
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Phase III
Starts after all surface victims are removed and cared for and those in voids can be removed without major debris removal
Selective debris removal using heavy equipment , trained rescue teams working with private contractors
Removal of entombed victims
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Phase IV
Usually 5-6 days after event
Probability of further survivors is minimal, and private contractors will usually finish clean up
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Search
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Type of Search
Physical Search
Canine Search
Technical Search
Use all three for the most complete search
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Search
Markings
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Building Construction Types and Characteristics
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Light Frame Building Collapse
Residential homes and apartments Highly susceptible to fires Complete collapses occur frequently
Rescuers look for badly cracked walls, leaning walls, offset of structure from foundation, or leaning first story
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Heavy Wall Unreinforced Masonry (URM)
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Heavy Wall Unreinforced Masonry (URM)
One to six stories high, residential, commercial, industrial, or institutional
Principle weakness in lateral strength Partial collapse is most common
Rescuers check for loose/broken parapet walls, connections between walls and floor, unsupported and partially collapsed floors
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Heavy WallTilt-Up/Reinforced Masonry
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Heavy WallTilt-Up/Reinforced Masonry
One to five stories Usually industrial/commercial Weakness is between walls and floors or
roofs. Walls fall away from floor/roof
Rescuers check connection of walls and roofs/floors, and connection between beams and columns
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Heavy Floor Building
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Heavy Floor Building
Residential, commercial, industrial Concrete frames up to 12 stories Includes concrete highway bridges Weakness is poor column reinforcement,
and connection between floor and column May fail partially or completely, and
potential laterally
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Types of Collapse Voids
Lean-To V-Type Pancake Cantilever
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Lean-To Void
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Lean-To Void
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V-Type Collapse Void
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Pancake Void
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Cantilever Void
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Shoring
Vertical Shores– T-Shore (Spot shore)– Window and Door shores– Laced Posts– Cribbing
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Shoring
Lateral Shores– Trench Shore– Wood Horizontal Shores– Hydraulic Trench Shore– One-Sided Trench Shore– Raker Shores
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Safety
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Categories of Hazards
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Structural Instability
Weakened Floors, walls, roofs, beams and columns
Free standing walls Spalling of Concrete structure, masonry Shifting of debris from aftershocks,
vibrations or secondary collapse Attached buildings can be an exposure, or
weakened by collapse
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Overhead Hazards Loosened debris and
unstable building structures overhead
Low hanging power lines
Building contents that are unstable and displaced
Failing slings or cables while lifting material
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Surface Hazards
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Sharp Debris
Broken Glass Jagged Metal Nails Wood Splinters Rough Masonry
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Slippery Surfaces
Fluids Water, Ice, Snow Sewage Unsure footing Improper footwear
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Other Surface Hazards
Sink holes/ground depression by earth movement
Downed live power lines Opened manhole covers and other
dangerous opening when flooding occurs Heavy equipment
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Below-grade Hazards
Atmospheric changes due to ruptured fuel, gas lines or presence of hazardous chemicals
Floods– May have caused the collapse– From ruptures water/sewage lines– From ground water
Elevation differences can cause difficult access and egress
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Utilities Hazards
Electric Fuel/gas Water Steam Sewage
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Hazardous Materials
Commercial establishment Hazardous Household Chemicals
Ammonia, Bleach, cleaners, solvents, etc.
Garage
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Other Hazards
Fire, Smoke, Explosion
Heavy Vibrations Inhalation Hazards Power tools Noise Scene Control
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What Are Some of the Hazards?
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Hazards?
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This
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Floor Collapse
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Safety Equipment
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Personal Protective Equipment
Helmet Eye Protection Gloves Knee pads Clothes Work Boots Radio Lights
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Personal Lights
Hand light Helmet light Don’t rely on one person for light Have back-up Chemical light
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Respiratory Protection
Level will depend on atmospheric hazards
Cartridge filter SCBA Supplied Air
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Safety Officers
One for each unit Shouldn’t be engaged in rescue efforts Concentration on team and hazards Utilize Safety checklist Rotation of crews
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Rotating Crews
Lessens the risk of fatigue injuries Rotate partial crews Monitor work times of all crews
Rescuers will work longer if they’re not told to take a break
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Communications
Maintain voice contact with rescuers
Communicate needs to team leaders
All rescuers should have a portable radio
Have predetermined hand signals
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Communications Cont’
Coordinate rescue effort with other teams so that one team doesn’t place other team in danger.
Advise team leaders of progress Especially important during night ops
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Evacuation/Escape Procedures
Signaling systems FEMA US&R task force evacuation signals
Devices• Air horns• Hand held CO2 boat horns• Vehicle horns
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Signals
Cease operation/all quiet: One long Blast (3 seconds)
Evacuate area: Three short blasts (one second each)
Resume Operations: One long and one short blast
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Escape Procedures
Alternate exit Communicate if you become trapped Radio Voice Banging on structure Prearranging signals Advise leaders of escape from building
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Approach Considerations
Secondary devices Safe Zones/Collapse area (Danger Zones) Hazardous materials Control of Scene
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Safety Considerations
Wear proper gear, use the buddy system Control utilities early
Gas, Electric, Water
Monitor atmosphere Radioactivity, O2, Flammable
Eliminate fire danger Have hoses/extinguishers available wet areas prior to using spark producing tools
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Safety Considerations Cont’
Establish safe areas to keep people out of dangerous areas
Barrier tape in X pattern to warn about hazard Two rows of straight tape to control access
Monitor Building Movement Before searching voids remember, “3 Ss”
Survey Stabilize Search
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Safety Considerations Cont’
Have awareness for Stress Factors Rehab Enforce Safety
Rescuer Safety is number one Priority!
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This completes the general training requirement for NFPA 1670
Structural Collapse Rescue Awareness
Click the box below to take a quiz andreceive a Certificate of Completion.
FINAL QUIZ