Excludes Oxygen-Blanket Effect
Suitable For Class B Fires
Aqueous Film Forming Foam 3. Dry Powder:-Class A,B,C
Powder Has A Smothering Effect But No Cooling Properties
Can Be Used On All Types Of Fire 4. Carbondioxid:-Class B,E
High Pressure Cylinder Containing Liquified Co2
Liquid Vapourises In Contact With Air
Safe To Use On Electrical Fires And Burning Liquids Inspection And Maintenance Of Fire Extinguishers
Inspection:-Routine (Perhaps Monthly) Visual Check To Ensure Extinguishers Are Place,Not Been Discharged Or Damaged.
Maintenance:-Involves An Annual Examination By A Competent Person With The Removal And Replacement Of Equipment Found Faulty And The Date Af The Inspection Recorded.
Daily Checks (Fire Warden)
Weekly Inspection (Fire Warden)
Annualy Serviced (Competent Person)
Five Yearly Extended Service/Discharge Sitting Of Fire
Extinguishers:- Accessibility
Proximity To Exits/Escape Routes
Visibility And Signage
Locate Off Ground With Adequate Support
Suitable Type
Protection Against Damage And Weather Emergency Evacuation
Procedured:- Means Of Raising The Alarm
Contacting The Emergency Services
Fire Evacuation Routes
Fire Evacuation Signs
Who Are And The Role Of Fire Marshals
Type Of Fire Extinguishers
Not To Use Lifts
Evacuation In An Orderly Fashion Practice
Drills:-Practice Drills Should Be Undertaken
To:- Checking Alarm Can Be Heard Throughout The Premises
Testing The Effectiveness Of Evacuation Procedure
Familiarising Employees With The Alarms Etc
Giving Fire Awards To Practice Their Roles
Satisfy A Legal Requirement
Element-4 Electrical Safety Ohms
Law:-The Higher Law:-The Electrical Pressure (V) Or Law:-The Lower Law:-The Circuit Resistance (R),Law:-The Higher Is Law:-The Current That Flows In An Electric Circuit.
I=V/R
I=Is Measured In Ams (A),Which Is The Electron Flow Or Current V=Is Measured In Voltas (V),Potential Difference Or Pressure R=The Resistance Is Measured In Ohms
Electrical Power=Voltage*Current Main Dangers Of
Electricity:-1. Electric Shock:-Contact With Live Parts.
Direct
Contact:-Coming Into Contact With A Conductor That Is Supposed To Be Live.
Indirect
Contact:-Coming Into Contact With A Conductor That Is Not Live In Normal Conditions But Has Become Live Due To A Fault.
2. Arcing
3. Fire And Explosion 4. Burns
Severity Of Electric
Shock:- Current In Amperes
Length Of Contact Time
Path Through The Body
Conductivity/Resistance Of The Body
The Voltage
Conductivity Of The Environment
Nature Of The Current
Nature Of Contact
Age And Health Status Of Victim If A Person Hass Received An Electric
Shock:- Don’t Touch Injured Person Until The Current Is Switched Off
If The Current Cannot Be Switched Off,Stand On Some Dry Insulating Material And Use A Wooden Or Plastic Implement To Remove The Injured Person From The Electric Source
Administer First-Aid If Qualified
Call Professional Help Causes Of Electric
Fire:- Inadequate Circuits For The Current
Overloaded Circuits
Incorrect Fuses
Damaged Wiring And Insulation
Loose Connections
Overheating Of Cables
Overheating Due To Thermal Insulation
Overheating Due To Lack Of Ventilation
Flammable Materials Too Close To Electrical Equipment Effects Of Electricity On
Body:- Damage To The Nervous System
Fibrillation (Irregular Heartbeat)
Tissue Burns At Entry And Exit
Damage To Internal Organs
Muscular Contractions
Physical Trauma
Stopping Breathing
Stopping The Heart Secondary
Effects:- Falls From Height
Unintentional Movement Of Machinery
Failure Of Control Measures And Security Systems
Corporate Reputation
Throw Off Electricity Protection
Devices:- Fuses
Circuit Breaker
Earthing
Isolation
Reduced Voltage
Battery Operated Tools
Residual Current Devices (Rcd)
Double Insulation
Fuse:-A Specialy Designed Weak Link Which Is Designed To Melt Fuse:-At Fuse:-A Predetermined Value Of Current.
Advantages:- Cheap And Rapidly Available
Protects Equipment
Disadvantages:- Will Not Protect Individuals
Slow To Operate
Inaccurate
Unsuitable Or Wrong Fuse May Be Used
Easy To Overwide
Needs Tool To Replace Circuit
Breakers:-Electromagnetic Devices Which Perform The Same Function As Fuses But Operate Faster.
Advantages:- Automatically Trip Under Fault Conditions
No Tools Required To Reset
Not Easy To Defeat
Protects Equipment From Overload
Disadvantages:- May Be Mistaken For An Rcd
Do Not Protect The Individual
Earthing:-Electricity Will Always Try To Reach Earth And Earthing Is Means Of Providing A Low Resistance Path To Earth.
Advantages:- Prevent Indirect Electric Shock
Readily Identified
Disadvantages:- Specialist Testing And Maintenance,Professional Installation
No Protection If Removed
Isolation:-Shutting Off The Electric Supply To An Item Or Equipment And Preventing The System From Being Mistakenly Reconnected.
Advantages:- Safest Option As It Eliminates Electricity
May Be Physically Locked Off
Disadvantages:- May Be Isolate Other Equipment
May Be Reconnected Without Lock Off
Prevents Live Fault Finding Reduced Voltage
System:-Reducing The Mains Voltage By Means Of A Transformer To A Lower Safer Voltage E.G. 110 Volts Or 55 Volts.
Advantages:- At 55v-Injury Is Highly Unlikely
Colour Coded Cabling System For Easy Recognition
Disadvantages:- Specialist Equipment E.G. Transformer Required
Lead From Supply To Transfer At Highr Voltages,Needing Protection With Rcd Battery Operated
Tools:-
Advantages:- Little Risk During Normal Use
Not Restricted By Cable
Not Trailing Cable
Disadvantages:- Limited Use
Low Power Output
Constant Charging Required
Residual Current Device
(Rcd):-Compares The Electricity Flow To The Equipment With The Return Flow And If A Difference Is Detected The Equipment Is Isolated.
Advantages:- Rapid And Sensitive
Difficult To Defeat
Easy To Use,Test And Reset
Cannot Be Reset With A Fault On The Circuit
Disadvantages:- May Isolate Crucial Equipment If One Rcd Covers A Number Of Distribution Points E.G. Freezers And Computers
Mechanical Device Which Could Fail
No Overload Protection Double
Isolation:-Two Separate Layers Of Insulation Are Provided Which Allows For Fault Detection Where One Layer Has Failed The Other Still Provides Protection.
Advantages:- Two Layers Of Insulation Prevent User Contact With Any Live Parts
No Earth Required
Disadvantages:- Physical Damage May Defeat Double Insulation
No Earth Therefore No Protection If Used With Equipment That Requires Earth Portable Electrical
Equipments:-Accidents Caused
By:- Using Unsuitable Apparatus
Inadequate Maintenance Or Misuse
Using Defective Apparatus
Modifications By Unauthorised Person
Modifications Whilst The Appliance Is Live
Using Equipment In Unsuitable Environments
No System Of Inspection Or Removal Of Damaged Equipment
Precautions (Portable
Equipments):- Reduced Voltage Operation
Use Of Residual Current Circuit Breakers
Protected Against Overload
Cables Insulated
Sufficient Socket Outlets
Use Of Cable Drums
Properly Trained Staff
Regular Inspections And Checks
Correct Sheathing Types Of
Inspection:- User Checks
Formal Visual Inspection
Combined Inspection And Test (Pat) Frequency Of Inspections And
Test:- Manufacturer’s Recommendations
Age Of Equipment
Robustness Of Equipment
Double Insulated Or Earthed
Type Of Cable
Extent Of Use
Users Of Equipment
Environment
Abuse Or Misuse
History Of Equipment
Reasons To Keep Records Of Inspection And Testing Of Electrical
Equipment:- Inspection By Authorised Person
In Case Test Label Removed
Test Frequencies Maintained
Record Actions Of Faults Rectified Electrical Safety In Office
Environment:- Equipment Of Approved Standard
Maintenance Of Fixed Electrical Installations
There Is A Means Of Isolation
Connections,Wiring Free From Defects
Correct Fuses
Plugs Correctly Wired
No Overloading Of Sockets
Appliances Switched Off When Not In Use
Pat Testing In Date
Cables Correctly Routed
Rcds Used
System For Reporting Of Defects Precautions For On Working Live
Parts:- Trained And Competent Staff
Accompanied By Another Person
Adequate Information About The Risks
Suitable Insulated Tools
Insulated Barriers On Screens
Suitable Instruments And Test Probes
Ppe
Permit To Work
Restricted Access
Element-5
Musculaskeletal Hazards And Risk Control
Ergonomics:-Study Of Relationship Between A Worker And The Working Environment.
People Vary Enormously In Height,Weight,Strength Etc.
The Equipment Designed To Avg. Man
This Leads To Physical Injuries Ergonomic Assessment
Organisation:-Supervision,Procedures,Breaks,Shift Patterns.
Equipment Or
Process:-Human Limitations,Analyse Task Etc.
The
Individual:-Physical Capabilities,Knowledge Attitude.
Environment:-Temperature,Noise,Space,Lighting Etc.
Causes Of Wrulds:-W=Work
R=Related U=Upper L=Limb D=Disorders
Wrulds Are Caused
By:- Repetitive Finger,Hand Or Arm Movements,E.G. Assembly Line Work,Keyboard Operators
Twisting Movements,E.G. Meat And Poultry Preparation
Squeezing,E.G. Using Pliers,Scissors
Pushing,Pulling,Lifting Or Reaching Movements,E.G. Assembling Packing Boxes
Work On A Production Line
Bricklying Symptoms Of Wrulds
Numbness Or Tingling In Fingers Etc.
Pain
Restriction In Joint Movement
Saft Tissue Swelling
In Addition To Symptoms:-Redness,Swelling And Limitation Of Movement.
Wrulds
Prevention:- Identify Of Risk Jobs
Reduce The Force Frequency And Duration
Design Of The Equipment
Automate The Process
Design Of The Work Station
Job Rotation
Regular Breaks
Training Employees In Correct Use Of Tools
Medical Surveillance
Assessment Of Individual For The Task Health Effects Of
Dse:-D=Display S=Screen E=Equipments
Musculoskeletol Disorders (Hand,Arm,Shoulder)
Eye And Eyesight Problems
Fatigue And Stress
Epilespy
Facial Dermatitis
Radiation
Effects On Pregnant Women D.S.E Assessment
Organisation:-Job Rotation,Breaks.
Individual:-Physical Characteristics,Training.
Environment:-Noise,Lighting,Glare,Temperature,Space Etc.
Equipment:-Height/Position Of Keyboard And Screen,Seating Posture,Design Of Chair,Screen Definition And Colour,Adjustibility Of Equipment.
Dse Workstation Layout
Good Lighting
No Glare,Distracting Reflection
Noise To Minimum
Aple Legroom To Allow Postural Movement
Minimise Glare (Windows)
Suitable Software
Screen Suitable Position
Ample Work Surfaces
Suitable Chair/Adjustable
Footrest If Necessary
Suitable Environment Other D.S.E Requirements
Plan Work With Breaks
-Provision Of Eye/Eyesight Test
Training And Information -Risks From Dse Work
-Importance Of Good Posture Laptops(Design,Usage)
The Mouse(Good Posture And Technique) Manual Handling
Supporting Or Any Transport Of A Load By Hand Or Body
Force,Including:- Pulling
Putting Down
Pushing
Lifting
Carrying
Moving
Holding Manual Handling Aids
Pallet Jack
Pallet Jack Scissor Lift
Coil Lifting Jig
Tilting Barrel Lifting
Hydraulic Jack
Conveyer
Causes Of Accidents From Manual Handling
Slips,Trips And Falls
Poor Lifting Techniques
Loads Which Are Too Heavy For The Individual Undertaking The Task
Unexpectedly Heavy Loads
Poor Posture
The Environment
Employees At Risk Of Manual Handilg Injuries
Construction Workers
Ware House
Care And Health Workers
Postmen,Refuse Collectors,Furniture Movers Etc.
Types Of Injuries Caused By Manual Handling External
Cuts And Abrasions,Mostly Involving The Upper Body And Libs
Bruises,Crush Injuries,Lacerations Internal
Fractures,Either As A Result Of Falls Or Dropping Heavy Objects Onto The Body
Strains And Muscle Injuries Involving The Spine
Strains And Muscle Injuries Involving Other Parts Of The Body General Guidelines On Safe Manual Handling Of Loads
1. Filters
Guidance Weights Should Be Reduced By10% If Thee Work Involves A Twisting Action Through 45 Degree Or More By 20% If A Twist Through 90 Degree Or More Is Involved.A Seated Person Should Not Attempt To Lift More Than 5kg.
2. Filters Pushing And Pulling
Pushing/Pulling Motion Men Women Starting A Load 20kg 15kg Keeping The Load In Motion
(But Not Exceed To 20m) 10kg 7kg
Manual Handling Assessment L=Oad
I=Ndividual T=Ask
E=Nvironment Load
Factors:- Physical Weight (Heavy)
Size (Bulky)
Shape (Difficult To Grasp)
Rigidity (Contents Liable To Shift)
Outside Surfaces (Sharp)
Stability Of Contents (Unstable)
Other Hazards (Hot/Cold/Sharp Etc) Individual
Factors:- Sex
Physical Health
Stature (Physique,Height Etc)
State Of Health
Level Of Training
Hazards To Prgnant Women
Person’s Perception Of Their Ability Task
Factors:- Holding Loads Away From Trunk
Twisting/Stooping/Reaching
Large Vertical Movements
Distances Involved
Strenuous Pulling And Pushing Loads
Repetitive Handling
Unpredictable Movement Of Load
Insufficient Rest Or Recovery Period
A Work Rate Imposed By The Process Environment
Factor:- Lighting (Poor)
Ventilation (Strong Air)
Obstacles
Height Of Work Surface
Temperature (Hot/Cold)
Floor Conditions
Space Available
Practical Measures To Avoid Manual Handling
Injuries:- Avoid Manual Handling
Risk Reduction
Automation And Mechanism
Team Handling
Training
Smaller/Lighter Load
Selection (Individual And Mechanical Aid)
Good Environment (Spacing,Flooring,Temperature) Elements Of Mechanical Handling And Lifting
Equipment:- The Load
The Workplace
The Handling Equipment
The Employees Involved Precautons In Mobile
Crane:- Crane Suiablity For The Task
Stable Ground Conditions
Outriggers Fully Extended
Avoid Obstructions
Consider Overhead Power Lines
Assign Designated And Protected Area
Properly Tested And Maintained Lifting Tackl
Use Of Correct Slinging
Competenc Of Personal
Load Near Ground If Travelling
Good Vivibility,Communications
Monitoring Wind Speed Main Hazards In Crane
Operations:- Crane Overturning
Overloading
Collision With Other Crane,Overhead Cables
Crushing B/W The Load And Another Object Or B/W The Sling And The Load Or The Sling And The Hook
Failure Of Support I.E. Outriggers Not Fully Extended
Loss Of Load Due To Rope,Chain Or Sling Failure
Failure Of Load Bearing Part I.E. Jib Breaking
Heavy Wind And Rain
Precautions Needed For Employees Safety During
Lifting:- Not Exceed Safe Working Load
Trained Person (Operator,Slinger)
Good Communication B/W All Operatives
Properly Maintained Equipment
Equipment Has Undergone Statutory Inspection
All Lifting Accessories Free From Defect
Make Sure Load Is Secured And Lifted Vertically Up To Correct Hight
Warning Of Lift Taking Place
Moved At Appropriate Speed Ensuring Path Free From Obstacles
Consider Overhead Power Lines
Put Down In Safe Position And Tension Released Under Close Supervision
Wear Your Helmets,High Visibility Cloth Lifting Accessories (Tackle)
Hazards:- Overloading
Incorrect Slinging Arrangements
Damaged Attachments
Textile Slings Damaged,Cut,Abraded Or Stretched
Chains-Deformed,Cracked Or Streched Links
Broken Wires Or Kinks
No Examination Or Pre-Use Inspection
Damage To Accessories During Use
Lack Of Training
Conveyor System And Its
Hazards:-
Types:- Belt
Roller
Screw Conveyors
Hazards:- Trapping
Contact
Entaglement
Striking
Impact
Items Falling Off
Slips
Manual Handling
Noise And Vibration
Sharp Edges
Precautions When Using Lifting
Accessories:- All Accessories Properly Certified/Tested
Properly Inspected By A Competent Person
Safe Working Load Clearly Marked
Inspection Prior To Use
No Repair To Accessories On Site
Not To Be Used For Unintended Purpose
Packing B/W Accessory And Load
Properly Stored After Use
Training For Staff In Safe Use Hazard Control Measures (Conveyor)
Fixed/Interlocked Guards On Drum
Side Guards,Enclosing Items To Be Conveyed
Trip Wires With Conveyor For Full Length
Emergency Stop Buttons
Safe Access At Regular Intervals
Avoiding Loose Clothing,Rings Etc
Restricted Access To The Running Conveyor
Head Protection
Regular Maintenance By Competent Person
Safety In Lifting Operations:-Lifting
Equipment:- Sufficient Strength,Tested
Through Examination
Inspected At Regular Intervals
Suitably Marked Lifting
Operations:- Planned And Supervised
Correctly Positioned
Loads Not Carried Over Persons
Good Visibility And Communication
Hoist:- Chain Hoist
Goods Hoist
Patient Hoist
Control Measures On Use Of
Hoist:- Regular Maintenance
Training And Refresher Training For All Operators
Carry Out Hoist Operation From One Position
Driver Must Have Good Visibility Of Landings
Clear Signals/Audible Warning Be Given Prior To Lifting Operation
Goods Properly Secured,No Loose Items Of Material In Goods Lift
Gates Correctly And Properly Secured Before Lifting Precautions When Using
Hoist:- Controls Only Operated From One Position
Clear Visibility Of Landings
Clear Signals
Secure Objects Being Carried On Goods Hoists
Items Not Overfilled
Do Not Carry Loose Items
No Passengers On Goods Lift
Safe Working Loads Clearly Marked
Hoist Properly Examined And Tested
Suitable Fancing And Gates At All Levels
Training Staff In Use Of Hoists
Element-6
Physical And Psychological Health Hazards And Control
Noise:-Sound Is Propagated By Compressions And Rarefactions In The Air.
Pressure Changes Are Detected By The Human Ear
Speed Of Sound Is Around 330m/S In Air Unwanted
Sound:-Sound Travels A Pressure Wave Which Has Two Characteristics.
Intensity
Frequency
Db (Decible)=Unit Of Measure Of Loudness Lepd=Daily Personal Noise Exposure Health Effect Of
Noise:-Chronic
Tinnitus
Permanent Threshold Shift
Loss Of Frequency Acute
Trauma From Loud Noise
Temporary Threshold Shift
Short Term Tinnitus
Secondary Effects How Does Noise Get To
Us:- Direct:-Through The Air From Noise Source To Receiver.
Reflected:-Via Walls,Ceilings And Other Structures.
Ground And Structure:-Structure Borne Through Wall Or Floor.
Noise Control
Techniques:-1. Source:-Design,Maintenance/Lubrication,Reduce Speed,Energy.
2. Path:-Location,Enclosure,Silencers,Absorption,Damping,Isolation,Screens.
3. Receiver:-Ear Protection,Job Protection.
Source Reduction On
Plant:- Tighten Loose Equipment
Regular Lubrication
Eliminate Unnecessary Leaks
Properly Adjust Machinery
Padded Containers For Catching Components
Switch Equipment Off Especially Fans
Use Rubber Or Plastic Bushers
Specify Noise Emissions Levels In Orders
Check Conditions And Performance Of Installed Noise Control Equipment Path Of Noise Prevention
Techniques:- Location
Enclosure
Silencers
Absorbers
Damping
Isolation
Lagging
Screens
Practical Measures To Reduce Eposure To Excessive
Noise:- Lubrication And Maintenance
Change The Process/Design
Reduce Energy
Isolation
Silencing
Enclosure
Absorption
Damping
Reduce Time Of Exposure
Ppe
Types Of Hearing
Protection:- Ear Plugs -Comfort -Hygiene
Ear Defenders -Comfort -Reusable
Reasons For Lack Of Wearing Ofhearing
Protection:- Poorfit
Resistance To Use
Uncomfortable
Incompatibility
Interfence
Hygiene
Supervision
Deterioration
Abuse
Health Effects Of Vibrating Tools
1. Acute:-Tingling Or Pins Needles In Hands And Extremities 2.
Chronic:- Numbness And Balancing Of The Fingers
Swollen Painful Joints
Reduction In Manual Dexterity
Reduction In The Sensation Of Touch Risk Factors Of Vibrating Tools
Frequency Of The Equipment
Magnitude Of The Energy
Strength Of The Grip And Other Forces
Time Of Exposure
Frequency Of Exposure
Low Temperature
Individual Factors
Control Measures For Vibrating Tools
Eliminate The Use Of Vibrating Tools
Selct The Low Vibration Equipment
Maintenance Of Equipment And Tools
Reducing Grip Force Required
Reducing Exposure Time
Introducing Health Surveillance
Orovision Of Gloves And Heated Pads
Information And Training On Risks And Indication Of Injury Types Of Ionising Radiation
Alpha
Beta
Gamma
X-Ray
Neutron
Penetration Power Of Radiation
Skin Or Paper Stops Alpha
Thin Alluminium Stops Beta
Thick Lead Stops Gamma Why Is Radioactivity So Useful?
Easy To Detect
Radiation Can Be Very Penetrating
Radiation Can Destroy Living Cells Harmful Effects Of Ionising Radiation Acute Effects
1.
Somatic:- Mild Nausea To Severe Illness
Diarrhoea
Headaches
Hair Loss
Redness Of Skin 2.
Genetic:- Damage To Reproductive Cells Chronic Effects
1.
Somatic:- Complete Hair Loss
Lungs Cancer Etc 2.
Genetic:- Damage To Offspring Of Exposed Protection Against Ionising
Time-Reduce Exposure
Distance-Increase Distance
Shielding-Use Barriers
Ppe
Environmental And Personal Monitoring
Training And Supervision
Correct Disposal Of Radiation Material
Good Hygiene Practices Employer May Have To Appoint
Radiation Protection Advisor
Radiation Protection Supervisor Non-Ionising Radiation
Ultra-Violet
Infra-Red
Lasers
Microwave Ultra-Violet
Welding,Sun Rays.Two Main Hazards Effects On Skin And Eyes.
Infra-Red
Hot Metal E.G. Foundaries.Heat And For Eyes Risk Of Cataracts.
Lasers In Use
Cutting
Surgery Hazards
Eyes Are More Vulnerable To Damage From Mild Retina Burns To Permanent Blindness Protection Against Non-Ionising Radiation
Shielding
Distance B/W Suorce And Person
Reducing Duration Of Exposure
Ppe
Protective Creams Stress
Stress Is Defined As The Reaction People Have To Excessive Pressures Or Other Types Of Demands Placed Upon Them.
Home:- Sickness
Children
Marital
Financial
Travel
Work:- Kind Of Work
Physical Conditions
Uncertainty
Conflict
Kind Of Jobs Health Effects Of Stress
1. Physical Effects
Raised Heart Rate
Increased Sweating
Headaches
Dizziness
Blured Vision
Arching Neck
Skin Rashes
Lower Resistance To Infection 2. Behavioural Effects
Increased Anxiety
Irritability And Sudden Mood Changes
Drink Or Smoke More
Difficulty Sleeping
Poor Concentration
Inability To Deal With Tasks Work Problems Of Stress Results
Lack Of Motivation
Lack Of Commitment
Poor Time Keeping
Increases In Mistakes
Poor Decision Making
Poor Planing
Increases In Absense
This Reflects In Relationships At Work As
Tension B/W Collegues And Supervisors
Poor Service To Clients
Individual Relationship Problems
Increase In Discipline Problems
Problems That Lead To Stress
Culture Of The Organisation
Shift Work,Unsociable Hours,Excessive Overtime
Job Insecurity
Repetitive /Monotonous Work
Lack Of Breaks And Control Over Job
Work Rate Too High Or Too Low
The Working Environment
Relationships
Harassment And Bullying
Fear Of Violence
Fear Of Violence