Scaffolding Hazard and Safety In this post we will discuss full course of scaffold safety and
identifying hazard and protection from hazard and using safety sings . Duration
is 4 hour Scaffolding Hazard and Safety An
elevated, temporary work platform Three
basic types Supported scaffolds--
platforms supported by rigid, load bearing members, such as poles, legs,
frames, & outriggers Suspended
scaffolds-- platforms suspended by ropes or other
non-rigid, overhead support Aerial
lifts -- such as “cherry pickers” or “boom trucks Scaffolding Hazard and
Safety
What is Scaffolding Hazard and Safety ?
What Is A Scaffold?An elevated, temporary work platform.
Three basic types Scaffolding Hazard and Safety :
Supported scaffolds -- platforms supported by rigid, load bearing members, such as poles, legs, frames, & outriggers
Suspended scaffolds -- platforms suspended by ropes or other non-rigid, overhead support
Aerial Lifts -- such as “cherry pickers” or “boom trucks”
Hazards
Employees working on scaffolds are exposed to these hazards:
Falls from elevation – caused by slipping, unsafe access, and the lack of fall protection
Struck by falling tools / debris
Electrocution – from overhead power lines
Scaffold collapse - caused by instability or overloading
Bad planking giving way
Fall Hazards
Falls may occur:
While climbing on or off the scaffold
Working on unguarded scaffold platforms
When scaffold platforms or planks fail
Protecting Workers from Falls
If a worker on a scaffold can fall more than 10 feet, protect them by:
Guardrails, and/or
Personal Fall Arrest Systems (PFAS)
Guardrails
Install along open sides & ends
Front edge of platforms not more than 14 inches from the work, unless using guardrails and/or PFAS
Top rails - 38 to 45 inches tall
Midrails halfway between top rail and platform
Toe boards at least 3-1/2 inches high
Personal Fall Alert System PFAS)
You must be trained how to properly use PFAS
PFAS include anchorage, lifeline and body harness.
Can use PFAS instead of guardrails on some scaffolds
Use PFAS & guardrails on suspension scaffolds
Use PFAS on erectors and dismantlers where feasible
Falling Object Protection
Wear hardhats
Barricade area below scaffold to forbid entry into that area
Use panels or screens if material is stacked higher than the toe board
Build a canopy or erect a net below the scaffold that will contain or deflect falling objects
Overhead Power Lines
The possibility of electrocution is a serious consideration
when working near overhead power lines
Check the clearance distances listed in the standard
Scaffold Support Examples
Good support _Inadequate support in danger of collapse?
Essential Elements of Safe Scaffold Construction
Use appropriate
scaffold construction
methods
Proper scaffold access
Properly use a
competent person
Scaffold Platform Construction
Scaffold Platform Construction
Platforms must:
be fully planked or decked with no more than 1 inch gaps
be able to support its weight & 4 times maximum load
be at least 18 inches wide
Scaffold Platform Construction
No large gaps in front edge of platforms
Each abutted end of plank must rest on a separate support surface
Overlap platforms at least 12 inches over supports, unless restrained to prevent movement
Scaffold Platform Construction
No paint on wood platforms
Use scaffold grade wood
Fully planked between front upright and guardrail support
Component pieces used must match and be of the same type
Erect on stable and level ground
Lock wheels and braces
Scaffold Height
The height of the scaffold should not be more than four times its minimum base dimension unless guys, ties, or braces are used
5' WIDTHNESS
20' HIGHT
5' WIDTHNESS
20' HIGHT
Platform Ends
Each end of a platform, unless cleated or otherwise restrained by hooks, must extend over its support by at least 6 inches
Supported Scaffolds
Platforms supported by legs, outrigger beams, brackets, poles, uprights, posts, & frames
Restrain from tipping by guys, ties, or braces
Scaffold poles, legs, posts, frames, and uprights must be on base plates and mud sills or other firm foundation
Provide access when scaffold platforms are more than 2 feet above or below a point of access
Permitted types of access:
Ladders, such as portable, hook-on, attachable, stairway type, and built-ins
Stair towers
Ramps and walkways
Scaffold Access
No access by cross braces
When using ladders, bottom rung no more than 24 inches high
Can use some end frames
Can access from another scaffold, structure or hoist
Suspension Scaffolds
Platforms suspended by ropes or wires.Rope must be capable of supporting 6 times the load…
Train employees to recognize hazards
Secure/tie to prevent swaying
Support devices must rest on surfaces that can support four times the load
Competent person:
evaluate connections to ensure the supporting surfaces can support load
inspect ropes for defects before shift
PFAS must have anchors independent of the scaffold support system
Moving Scaffolds
Employees can’t be on a moving scaffold unless:
Surface is level
Height to base ratio is 2 to 1
Outriggers are installed on both sides of scaffolds
Employees can’t be on scaffold part beyond the wheels
Competent person must be on site to supervise
Fatal Fact – Moving a Lift
Employee was operating an aerial lift, with an extendable boom rotating work platform
The boom was fully extended and the machine apparently ran over some bricks, causing the boom to flex or spring, throwing the employee from the basket
The employee fell 37 feet to a concrete surface
Don’t use Shore or Lean-to Scaffolds
Shore scaffold supported scaffold which is placed against a building or structure and held in place with props
Lean-to scaffold supported scaffold which is kept erect by tilting it toward and resting it against a building or structure
Using Scaffolds
Don’t work on snow or ice covered platforms or during storms or high winds
Use tag lines on swinging loads
Protect suspension ropes from heat & acid
Fatal Fact – Ice & No Guardrails
Laborer was working on the third level of a tubular welded frame scaffold which was covered with ice and snow
The scaffold was not fully decked, there was no guardrail and no access ladder
The worker slipped and fell head first 20 feet to the pavement below
Overhand Bricklaying
from Supported ScaffoldsA guardrail or personal fall arrest system is required on all sides except the side where the work is being done
Competent Person
Person capable of identifying and promptly correcting hazards
Determines if it’s safe to work on a scaffold during storms or high winds
Trains workers to recognize hazards
Selects qualified workers to conduct work
Scaffold Inspection
Competent person inspects scaffolds for visible defects before each shift and after any alterations
Defective parts must be immediately repaired
o Also Read These Program
Scaffold Erection
Scaffolds can only be erected, moved, dismantled or altered under the supervision of a competent person
Competent person selects & directs these workers and determines the feasibility of fall protection
Scaffolding Hazard and safety
Scaffolding Hazard and safety
Provide access when scaffold platforms are more than 2 feet above or below a point of access
The training must include:
Nature of electrical, fall, and falling object hazards
How to deal with electrical hazards and fall protection systems
Proper use of the scaffold
Scaffold load capacities
Scaffolding Hazard and safety
Scaffolding Hazard and safety
Train employees involved in erecting, disassembling, moving, operating, repairing, maintaining, or inspecting a scaffold to recognize its hazards and the correct procedures to use
Avoid the Main Hazards of Scaffolds
Falls from elevation
Bad planking
Scaffold collapse
Getting struck by falling tools or debris
Electrocution
Summary Remember to:
Use appropriate scaffold construction methods
Erect, move, or alter scaffold properly
Protect from falling objects or tools
Ensure stable access
Use a competent person
Train on scaffold construction and the hazards involved with scaffolds
Inspect scaffold before each shift and after alterations
Determine fall protection requirements
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