ELECTRICAL HAZARD

AWARENESS

OUTLINE

• ARC Flash videos.• Electrical Hazard. • Electrical Safety priorities & danger symbols.• Current affect and injury types.• Respond to emergency.• Work with electrical equip. (SS, Power lines &

Digging).• Safety measures & advises.• Real life behavior (Photos) & key message.• Q&A

ARC FLASH VIDEOS

Video 01

Video 02

WHAT DOES HAZARD MEAN?

Hazard means: • Any potential or actual threat to

the health or life of people, machinery or environment.

Electrical hazard safety means: • Taking precautions to identify

and eliminate or control electrical hazards.

WHY KNOW ABOUT ELECTRICAL HAZARD?

• Electricity is invisible – this in itself makes it DANGEROUS.

• Failing to take the necessary precautions can lead to injury or death and fire or property damage.

• Electricity is everywhere at home, office, street … etc.

• Everyone is exposed to electrical hazards, not just electricians.

WHAT ARE THE SAFETY PRIORITIES?

Electrical hazards exist in almost every workplace. Common causes of electrocution are:

• Making contact with overhead power lines.

• Undertaking maintenance on live equipment.

• Working with damaged electrical equipment, such as poor insulated hand tools, extension cords, plugs and sockets.

• Using equipment affected by rain or water ingress.

HOW IS THE ELECTRICAL HAZARD SYMBOL?

WHAT ARE THE LEVELS OF CURRENT AFFECT?

AC CURRENT (MA) EFFECT ON HUMAN BODY

1 Slight tingling sensation

2-9 Small shock

10-24 Muscles contract causing you to freeze

25-74 Respiratory muscles can become paralysed; pain; exit burns often visible

75-300 Usually fatal; ventricular fibrillation; entry & exit wounds visible

>300 Death almost certain; if survive will have badly burnt organs and probably require amputations

DO YOU WANT TO BE A VICTIM?You could be the victim if you:

• Don’t follow proper procedures around electricity.

• Use electrical equipment improperly.

• Use faulty electrical equipment.

The types of injuries:• Burns• Shocks• Falls KEEP SAFE

KNOW HOW TO CONTROL ELECTRICAL HAZARDS

HOW DO YOU RESPOND TO ELECTRICAL INCIDENTS?

If you come across a person receiving an electric shock (emergency):

• If possible, disconnect the electrical supply (switch OFF).

• Call the emergency

• Assess the situation – never put yourself at risk.

• Take precautions to protect yourself and anyone else in the vicinity.

• Assess the injuries and move the casualty to

a safe area if required.

• Apply first aid if trained.

• Seek urgent medical attention.

#1222

WHO CAN ACCESS SUBSTATIONS?• Only trained and authorised personnel may enter the substation.

• To work inside the substation you MUST have a work permit, wear required PPE and NO lone works.

• NO work with live equipment UNLESS it’s mandatory and this work should be done by senior expert personnel.

ONLY AUTHORIZED PERSONNEL CAN ENTER SUBSTATIONS AFTER GETTING THE PERMISSION FROM AREA OPERATIONS AND HE MUST LOG HIS INFO. IN THE LOG BOOK.

SHOULD YOU BE AWARE OF OVERHEAD POWER LINES?

• Do you know if there are overhead power lines on your site?

• Do you know where they are located and what is the voltage rate?

• Do you know what the safe work clearance is?

• Strict regulations are laid down to cover any work that may have to be performed close to overhead power lines.

BEFORE START DIGGING..Be aware of the potential hazard from buried electrical cables for the following activities: • excavation

• drilling

• trenching

• levelling

• Digging

Don’t commence excavation work near buried cables unless you check the drawings and a hot work permit has been issued.

Follow the precautionary measures that need to be taken before starting.

WHAT ARE OTHER SAFETY MEASURES?

• Heed warning signs.

• NO work on live equipment.

• Using approved right equipment and tools.

• Studying the operation or manufacture manual.

• Taking care of extension leads or cords.

• Using residual current devices – RCDs.

• Using the proper fuses rating and circuit breakers.

CAN YOU PROTECT YOURSELF FROM ELECTRICITY?

• Have appropriate training.

• Don’t wear metal objects such watches or rings.

• Wear required PPE and special PPE when dealing

with MV or HV.

• Totally isolate the power and make sure it’s OFF

by using trusted Multimeter.

• Discharge any residual current.

• Clean and dry leads and plugs before use.

• Don’t use damaged or potentially damaged devices.

• Don’t touch live parts

REGULAR SAFETY INSPECTIONS

Are a part of YOUR job...

• Electrical devices and hand tools should be checked each time before use for defects.

• Electrical Devices should be calibrated.

• A checklist should be developed and used prior to start the job.

WHAT THE RISK ASSESSMENT IS?!

IS THIS A PROBLEM?!!

IS THIS A PROBLEM?!!

IS THIS A PROBLEM?!!

IS THIS A PROBLEM?!!

INCIDENTS DESCRIPTION IMMEDIATE ACTION TAKEN AREA RISK RATE CATEGORY

On or before 0849 Tank Farm Operation reported on their Bravo General Channel #2 that a Flash Over happened in Acid Gas Heat Transformer 148-13-XFR-0-201 at Substation 13. At 0856hrs. Fire Emergency Channel was activated and Fire protection where deployed on Incident Location. HSE YASREF conducted Gas Test since the room has Smoke accumulated in the whole switchgear. Upon Learning that the fire did not escalate, Fire Alarm at about 9:10.

Initial information prior to Flash Over was ESO together with Operation that they are De-Energizing the said MCC panel when it’s suddenly the Flash over happened.

Tank Farm

High ELECTRICAL

FLASH OVER INCIDENT AT SS-13

THE KEY MESSAGE IS…

Work shouldn’t be

SHOCKING !!

Q&A