session 5 lesson 5 why? to protect: people property against: electrical hazard mechanical hazard...
TRANSCRIPT
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Session 5
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Lesson 5Lesson 5
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Why?Why?To protect:
• People
• PropertyAgainst:
• Electrical Hazard
• Mechanical HazardFor:
• Inspections
• Repairs
• Maintenance
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In the ProcedureIn the ProcedureProtection of fellow workers via:Protection of fellow workers via:
A warning that the equipment in a particular A warning that the equipment in a particular area is being worked on and must not be area is being worked on and must not be
operated or the area enteredoperated or the area entered
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Workcover RequiresWorkcover Requires
Only authorized persons with current Only authorized persons with current rescue breathing certification should rescue breathing certification should
apply lockout and tag out devicesapply lockout and tag out devices
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Isolation Procedure OrderIsolation Procedure Order1. Assess the need
2. Notify affected people/Seek authority
3. Method of isolation
4. Test for supply
5. Isolate
6. Danger Tag
7. Test
8. Test tester
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Isolation Procedure OrderIsolation Procedure Order1. Assess the need
Do you have the skills, qualifications, knowledge of the equipment to safely isolate a piece of equipment?
Equipment is normally remote from the isolation point. Equipment is normally remote from the isolation point.
Two people are generally requiredTwo people are generally required
Have you done a risk Have you done a risk assessment?assessment?
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Isolation Procedure OrderIsolation Procedure Order1. Assess the need
2. Notify affected people/Seek authority
An isolation point may affect other machinery
May create a dangerous situation on other processes that are interlinked
Many companies require a “Clearance to Isolate” authorisation before isolation commences.
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Isolation Procedure OrderIsolation Procedure Order1. Assess the need
2. Notify affected people/Seek authority
3. Method of isolation
Can be many locations in the electrical installation
Main Switch
Circuit Protection
Isolation switch near device
Isolation point must be able to LOCKED OUT
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Isolation Procedure OrderIsolation Procedure Order1. Assess the need
2. Notify affected people/Seek authority
3. Method of isolation
4. Test for supply
Test equipment must comply with Australian Standards
Tests that there is a supply to the device
Be aware of automatic controlled equipment
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Isolation Procedure OrderIsolation Procedure Order1. Assess the need
2. Notify affected people/Seek authority
3. Method of isolation
4. Test for supply
5. Isolate
Isolation point must be able to LOCKED OUT
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Isolation Procedure OrderIsolation Procedure Order1. Assess the need
2. Notify affected people/Seek authority
3. Method of isolation
4. Test for supply
5. Isolate
6. Danger Tag
Two types of tag: Danger & Out of Service
Must be installed in such a way that it has to be removed to operate isolation point
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Out of ServiceOut of ServiceUsed to Protect Equipment Only
Can be removed by anybody with authorisation
Can stay on equipment until repaired or replaced
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Personal DangerPersonal Danger
Used to Protect Life
Can only be removed by the person who placed it there
Has to be removed when worker leaves danger area
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Isolation Procedure OrderIsolation Procedure Order1. Assess the need
2. Notify affected people/Seek authority
3. Method of isolation
4. Test for supply
5. Isolate
6. Danger Tag
7. Test
Confirms that the correct isolation point has been used
Test equipment must comply with Australian Standards
Measure between:
Active & Neutral
Active & Earth + Exposed Conductive parts or Ground
Active & Other Actives
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Isolation Procedure OrderIsolation Procedure Order1. Assess the need
2. Notify affected people/Seek authority
3. Method of isolation
4. Test for supply
5. Isolate
6. Danger Tag
7. Test
8. Test tester
Confirms that tester is functioning correctly
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CautionCautionWhy is the ‘attempt to operate’ Why is the ‘attempt to operate’
isolation procedure not an isolation procedure not an effective method of verifying that effective method of verifying that
a circuit is de-energized?a circuit is de-energized?
mechanical failure of a switch mechanical failure of a switch contact cannot be determined by contact cannot be determined by
thethe‘‘attempt-to-operate’ methodattempt-to-operate’ method
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• List the three factors required for combustion;• Classify fires according to the type of combustible
material involved;• Identify the types of fire extinguishers suitable for fighting
electrical fires;• List the procedures to follow in the event of a fire;• Carry out correct fire fighting techniques in putting out an
electrical fire;• List the correct first aid treatment for treating burn
injuries;• List the procedures for handling PCBs.
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What are the three components that are required for a fire to exist?FU
EL
OXYGEN
HEAT
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Fires are classified by the fuel typeClass A
Class B
Class C
Class D
Class E
Class F
• Wood• Paper• ClothFlammable liquids
Flammable Solids
Flammable Gasses
Combustible Metals
Electrical Fires
Cooking Fats or Oils
• Sodium• Titanium• Magnesium• Potassium• Steel• Uranium• Lithium• Plutonium• Calcium
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ABE Dry ChemicalABE Dry ChemicalAmmonium phosphateIt receives its class A rating from the agent's ability
to melt and flow at 177°C to smother the fireMore corrosive than other dry chemical agents
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BC Dry ChemicalBC Dry ChemicalSodium bicarbonatePotassium bicarbonatePotassium bicarbonate & Urea ComplexPotassium Chloride
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Vaporising LiquidVaporising Liquid
Acts like liquid but “evaporates” leaving no residue
• Computer server rooms• Data centres• Areas housing sensitive electronic Equipment
Originally designed to fight fires in the highly delicate environments of hospital MRI rooms
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