Slide AW101 (16-9) Chapter 6_HIRARC [Student]

AW101 Occupational Safety And Health

Prepared by Mohd Sharif, JKE POLISAS 1

AW101 Occupational Safety

And Health 1

Chapter 2 Hazard Identification, Risk Assessment and Risk Control (HIRARC)

Content 1-3

6.1 Understand hazard risk and danger

6.1.1 Define hazard, risk and danger

6.2 Know types of hazard

6.2.1 Classify physical hazard

6.2.2 Classify biological hazard

6.2.3 Classify chemical hazard

6.2.4 Classify psychological hazard

6.2.5 Classify ergonomic hazard3Prepared By Mohd Sharif, JKE POLISAS

Content 2-3

6.3 Understand risk control

6.3.1 Classify hierarchy of control

a. elimination

b. substitution

c. isolation

d. engineering control

e. administrative controls

f. personal protection equipment (PPE)4Prepared By Mohd Sharif, JKE POLISAS



Content 3-3

6.4 Demonstrate the proper and safe methods in deploying portable fire extinguishers/ hose reels

6.4.1 Demonstrate the proper and safe methods in deploying portable fire extinguishers/ hose reels with respect to the different classes of fire

5Prepared By Mohd Sharif, JKE POLISAS

HAZARD, RISK, DANGER

Understanding of…


Hazard

Definition

• A source or situation with a potential for harm in term of human injury or ill health, damage to property and environment or combinational of these. @

• is something or situation that can cause harm if not controlled.


Risk

Definition

• Risk is a combination of likelihood and the probability that a particular occurrence or outcome and the severity of the harm (injury or damage).




Danger

Definition

• Relative exposure to hazard.


PHYSICAL HAZARD

BIOLOGICAL HAZARD

CHEMICAL HAZARD

PSYCHOLOGICAL HAZARD

ERGONOMIC HAZARD

Classify /Types of Hazard.


Why need to identify hazard?

• To keep workplace safe and healthy

• Safeguard employee and all staff

11Prepared By Mohd Sharif, JKE POLISAS 12Prepared By Mohd Sharif, JKE POLISAS




Physical Hazard

Microsoft Office

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• Extreme Temperature

• Electrical

• Mechanical

• Radiation

• Vibration

• Hypobaric/Hyperbaric Pressure

• Noise

• Illumination14Prepared By Mohd Sharif, JKE POLISAS

Biological Hazard

• Virus

• Fungus

• Bacteria

• Plasmodium

• Protozoa


Chemical Hazard

1. Classification Based on Physicochemical Properties

– classified as either explosive, oxidizing,

extremely flammable, highly flammable

or flammable

2. Classification Based on Health Effects

• classified as either Very Toxic, Toxic,

Corrosive, Harmful or Irritant

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Chemical Hazard

• Acid / Alkali

• Solvent

• Disinfectant

• Anesthetic Gas

• Cytotoxic Drugs


Psychological Hazard

• Occupational Stress

• Drugs and substance addiction

• Depression, anxiety disorders

• Sexual harassment


Ergonomic Hazard

• Repetitive Motion

• Musculoskeletal Injury

• Static Motion

• Visual Display Unit

• Lifting Weight


HIERARCHY OF CONTROL

Risk Control




Hierarchy Of Control

1. Elimination

2. Substitution

3. Isolation

4. Engineering control

5. Administrative controls

6. Personal Protection Equipment (PPE)


1 - Elimination

• Fully protection


2 – Substitution

• Additional Control


3 – Isolation

• Fixed Guard




4 – Engineering control

• Interlock Guard


5 – Administrative controls

• Instruction Sign


6 - Personal Protection Equipment


Personal Protection Equipment




Personal Protection Equipment


I am protected with PPE!


Fire Elements


HAZARD OF FIRE

Portable Fire Extinguishers/ hose reels for

different classes of fire




Fire Hazard• Explosion – destroy, vaporize, kill/ knockout

• Burn – building (no exit), flesh

• Consuming oxygen – suffocation

• Smoke – inability to see, act

• Toxic fume/gas – toxic reaction, kill

• Heat – inability to see, act, “cook” flesh

• Loss of buildings, equipment, personal belongings (irreplaceable items)


Fire Classification

Class A

�Fire involved Solid Hydrocarbon Material example such wood, paper, textil, rubbish, etc. When heated it release flammable gas.


Fire Classification

Class B

�Fire involved Liquid Hydrocarbon aorliquid contain hydrocarbon molecule such as petrol, gasoline, kerosene, naphtha, etc. and also petroliumproduct such paint, varnish, turpentine, and others.


Fire Classification

Class C

�Fire involved gases such as methane, propane, butane hydrogen etc. which is flammable. This gases required spark to fired and it so rapid and may cause explosion.




Fire Classification

Class D

�Fire involved solid metal such as Potassium, Sodium, Calcium, Magnesium etc. If metal react with oxygen and burn, it will burn fast at very high temperature.

F:\Polisas\03-Sem Jul 2008\E4008 Keselam


Fire Control Methods

Starvation

�Reduce or separate fuel source from burn place.

>Stop fuel supply>Close supply valve

>Saparate fuel material



Smothering

�Reduce or stop oxygen supply from fire.

>Stop Oxygen>Use foam

>Use Carbon Dioxide



Cooling

�Reduce temperature / heat.

>Reduced temp. / Heat>Water absorbe heat




Portable Fire Extinguishers


Portable Fire Extinguishers


Extinguishers Inspection

• Unobstructed access

• Protective cover, safety pin

• Gage - in the GREENGREEN zone

• Inspect discharge hose and nozzle for cracks, damage

• No corrosion on valve or tank

• Bracket, securely mounted

• Check inspection tag datePrepared By Mohd Sharif, JKE POLISAS 43

Fire Extinguishers Types




PtASS

Prepared By Mohd Sharif, JKE POLISAS 45

PULL the pin


Test


ONLY ONLY upon your approach to the upon your approach to the firefire

Otherwise the powdered extinguishing agent may clog the nozzle if a unit is squeezed and

released.

AIM at the base of fire




SQUEEZE the lever


SWEEP from side to side


Demonstration Video

• How to use portable fire extinguisher


Reference

• GUIDELINES FOR THE CLASSIFICATION OF HAZARDOUS CHEMICALS

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Slide AW101 (16-9) Chapter 6_HIRARC [Student]