Element 7:- Construction Activities Hazards and Control Flashcards
1
Q
Site Precautions for children:
A
- Fencing
- Security
- Cameras
- Warning signs
- Visit schools
- Take children to site on visits
- Lock away vehicle keys
- Lock away hazardous chemicals
- Remove ladders
- Cover holes
- Reduce heights of materials
2
Q
Hazards for repair of Flat Roof
A
- Falling off
- Falling through
- Access
- Hot bitumen
- Burning gases
- Fumes
- Fire
- Manual handling
3
Q
Ladders:
Hazards in use
A
- Falling off
- Overreaching
- Carrying up materials
- Unsuitable ladder
- Ladder not properly secured
- Incorrect angle
- Not reaching above landing place
- Aluminium ladders near electrical lines
4
Q
Scaffolding:
Inspection checking-
A
- Staggered joints
- Not overloaded
- Suitable access
5
Q
Mobile Tower Scaffold:
Precautions-
(Hazards opposite of above)
A
- Erected by competent persons
- Pre use inspections
- Positioned on firm ground
- Correct height to width ratio 3.5 x narrowest side
- Use of outriggers to broaden base
- Tying in to adjacent structure
- People and materials removed before moving
- Handrails and toe boards
- Suitable work platform
- Not overloaded
6
Q
Mobile Elevating Work Platforms:
Hazards-
A
- People falling or being thrown
- Materials falling
- Crushing between carrier and a fixed structure
7
Q
Collapse or overturning of MEWP caused by:
Precautions opposite of above
A
- Equipment failure
- Unsuitable ground conditions
- Defective or unused outriggers
- Overloading of the carrier
- Struck by load
- Struck by another vehicle
- Interference with controls
8
Q
Suspended access cradles and platforms :
Precautions-
A
- Pre-use inspections
- Supports to building of adequate strength
- Suitably maintained
- Safe access and egress
- Not exceed safe working load
- Guard rails and toe boards fitted
- Safety harnesses worn
- Limitations on use in strong winds
9
Q
Excavations:
Main hazards-
(Precautions for above)
A
- Undermining foundations
- Collapse
- Underground services
- Persons falling in
- Vehicles close to edge
- Access and egress
- Hazardous atmospheres
- Flooding
- Contamination
- Type of soil
- Removal of soil
10
Q
Precautions for underground services:
A
- Plan job
- Locate cables
- Avoid cables
- Safe digging procedures
11
Q
Hazards of Demolition:
A
- Underground and over head services
- Falls from height
- Fall of materials
- Premature collapse
- Health hazards
- Gases and vapours
- Noise
- Vibration
- Ionising radiations
- Biological hazards
12
Q
Precautions opposite of above plus:
A
- Exclusion zones
- Safe method of demolition
- PPE
