fall hazards. roofs methods of roof fall protection safety monitors guardrails and warning lines...
TRANSCRIPT
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Fall HazardsFall Hazards
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Fatal Falls Most Often From
Structural Steel 9%
Floors, Loading Docks, Ground
Level 4%
Non-moving Vehicles 3%
Roofs 37%
Other 12%
Scaffolds 20%Ladders 15%
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Roofs
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Methods of Roof Fall Protection
Safety Monitors
Guardrails and warning lines
Fall Arrest
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Safety Monitor
• Oversees work outside the warning lines.
• Establishes the procedure to protect.
• Workers must receive special training.
• Use should be extremely limited
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Warning Line Requirementsfor Roofers
• Set at 34 – 39 inches• Must be maintained at
all times.• Workers outside
warning lines must be tied-off or have safety monitor.
6 feet
FreeWork Zone
Warning Line
Roof Perimeter
6 fee
t
6 feet 6 feet
Free Work Zone
Warning Line
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High Roof Warning Line
Lines too close to edge
Lines adequately set
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Outside Warning Lines
• Parapet up to at least 39"
• Fall Restraint• Fall Arrest• Safety Monitors
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Roof Guardrails
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Roof Fall Arrest Restraint
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Open Sided Floors & Edges
• Open edges on decks, roof, mezzanines, etc. over 6' high must be protected
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Stay Back from Edges
• Stay away from edges unless work requires it
• Always face the edge
• Work from your knees
Fall Hazard
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Warning Line For Non-Roofing Work
• Warning lines for non-roofing work must be at least 15 feet back from holes or edges.
• These warning lines should only be used temporarily.
• Workers outside the warning line must be tied off.
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Guardrails
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Guardrail Coverage
Bad Better
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Holes
• Covers
• Guardrails
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Material Handling Platforms & Hoist Areas
• Material handling platforms must have guardrails
• When the guardrails are opened to receive material, workers must be tied off
• Gates are preferred to removable rails
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Don’t Create a Greater Hazard
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Practical Implications of Total & Free Fall Distance Added Together
• This worker is tied to the beam with a basket hitch.
• How far will he fall?• What about swing?
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Free Fall Distance or “Vertical Displacement”
6’ Lanyard Length
3.5’ Deceleration Device
5’ From D-Ring to Worker’s Feet
3’ Safety Factor (stretch, bounce, etc.)
Total 11’ travel distance of d-ring before fall arrest takes effect. This potential impact force exceeds many lanyard
capacities (and OSHA standards).
When added to “total fall distance”,
anchoring at the feet can become
problematic5’ From D-Ring to Worker’s Feet
All distances are approximate, and shown for illustration only. This is why it is critical to maintain the safety factor distance!
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Harness Pressure Points
Spread load across butt strap and belt strap if on the harness
Excess pressure here can cut blood flow to the legs
Some studies have indicated permanent damage to the lower extremities when the worker hangs for more than twenty (20) minutes
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Slip & Trip Hazards- Housekeeping!
• Watch trip hazards
• Here trash creates a trip hazard for everyone in the building
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Stairways
• Stair pans should not be used for access until poured, and until guardrails and handrails installed
• Be sure all debris is removed immediately
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Scaffolds & Ladders
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Scaffold Requirements
• Be on a firm foundation with base plates• Be plumb, square and adequately braced• Have a fully planked work deck• Have guardrails over 10 feet• Be tied-in over 4:1 height to base ratio• Have an adequate means of access and
egress
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Good Foundations
Mason’s AdjustableHydro-mobileFrames
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Access
• No access by cross braces
• Bottom rung can not be more than 24" high
• You must use a ladder or frames designed to be used as ladders
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Proper Access Ladder tied into scaffold
LadderPlatform
Ladder Frame
Stairway Frame
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Baker-type Scaffolds
• Baker scaffolds can be unstable
• Never use a double stack without outriggers
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Suspended Scaffolds
• Outriggers must be properly set and have safety tie-backs
• Equipment must be regularly inspected and maintained.
• Workers must have independent lifelines
No tie-back
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Falling Object Protection1926.451(h)
• Toe boards at edges of platforms
• Use panels or screens when accessed from below
• Barricade areas below• Use canopies where
walkways cross underneath
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Fall Protection in Lifts
No fall protection required unless he gets off the floor
Fall protection required.
Aerial Boom Lift
Scissors Lift
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Ladder Types
• Type I-AA ladders are extra heavy duty and can handle up to 375 lbs.
• Type I-A ladders are heavy-duty and can handle up to 300 lbs.
• Type I ladders can hold up to 250 lbs.
• Type II ladders can hold 225 lbs. • Type III ladders are for light duty
only and can hold up to 200 lbs.
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Read the Warning Labels
• Labels are there for a reason!
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Proper Ladder Climbing• Use both hands to climb a
ladder • Always face the ladder
when climbing, descending or working
• Avoid the top two steps of a stepladder and the top four rungs on other ladders
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Don’t Lean a Step Ladder• The ladder is not
designed to be leaned.• The angle of the steps is
not level when set at 4:1.• The support leg can
contact the ground causing the step leg to kick out.
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Do Not Stand On The Top Step!!!
NO!
Obey the Labels!!
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Working Above Protections
When employees work above railings, they must be protected from falling over the railings.
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Extra Guardrails
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Proper Access Ladders
• Ladders should be set at 1 horizontal to 4 vertical
• Ladders must be secured• Ladder access ways must
be guarded• Ladders must extend 3'
above the landing surface, or an adequate grabrail must be provided
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Access Ways
• Offset guardrails are recommended
• Watch for tripping hazards at tops of ladders and stairs
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Bridges
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Cap or Beam Setting
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Falls While Decking
Leading edges must be protected
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Bridge Fall Protection
• Bridge edges must be protected
• When working over water flotation devices must be worn
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Equipment
• Do not jump from equipment
• Use three point contact at all times
• Be sure of your footing• Do not strain your
shoulders• Be sure steps are clear
of mud and ice
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Proper Seats
• Everyone must be in a proper seat with a seat belt .
• No riding on steps or running boards!
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Incident FreeIncident Free• Planning
– Planning for fall protection in advance– Have appropriate equipment available.
• Training – Workers exposed to falls must be properly trained. – Workers must be properly trained to erect scaffolds.– Workers must be trained in proper ladder use.
• Inspection– Fall arrest equipment must be inspected before each
use.– Scaffolds must be inspected by a competent person.– Ladders must be inspected.
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Incident FreeIncident Free• Oversight
– Evaluate proper use of fall protection systems.– Assure competent persons are overseeing scaffold
erection and use.
• Lessons learned– Investigate all falls.– Develop root causes of fall accidents.– Communicate needed changes based on the
information obtained.
• Re-evaluate – Fall plans after each project