Basic concept on Risk and Hazard in construction

1. A. BASIC CONCEPT IN SAFETY
Safety
Equation

2. A. BASIC CONCEPT IN SAFETY
=
Safety Equation
HAZARD x EXPOSURE x RISK

3. B. DEFINITION OF KEY TERMS
WHAT IS HAZARD

4. Hazard
B. DEFINITION OF KEY TERMS
HAZARD
- A source of potential harm, damage, or
adverse health effects to something or
someone
- A situation with a potential to cause loss

5. Hazard
B. DEFINITION OF KEY TERMS
Thing/Material
HAZARD
Condition
Substance
Behavior
Process
Organism

6. B. DEFINITION OF KEY TERMS
WHAT IS
RISK

7. Risk
B. DEFINITION OF KEY TERMS
RISK
- Usually categorized as low, medium, and high
- the likelihood or probability that a person
or a thing may be harmed or may suffer
adverse health effects if exposed to hazard

8. Risk
B. DEFINITION OF KEY TERMS
Factors influencing degree of
likelihood
- Nature/Frequency of exposure
- Manner of exposure
- Severity of effect

9. Difference between hazard and risk
B. DEFINITION OF KEY TERMS
Scenario 1:
The forklift was on the repair shop for a couple of days. The reinforcing bars
are needed to be placed at the designated stockpiling area and two workers
manually lift and transfer the rebars.
Scenario 2:
An extension cord running across the hallway where students frequently
pass through to get from one class to another.
Scenario 3:
A senior manager always screams at staffs when they submit
their deliverables even a minute late.

10. C. COMMON HAZARDS IN CONSTRUCTION
- Working at height
- Moving objects/equipment
- Poor housekeeping
- Excavation
- Confined space
- Hot works
- Noise
- Material and
manual handling
- Lifting works
- Electricity