Electrical, earthquake and lighting hazard protection

1. By :-
SRI VIDYA KAUMUDI 16011BB025
AMAR PREM PVY 16011BB036
SRUJAN KUMAR.B 16011BB042
SNEHA.U 16011BB044

2. *When electrical tools are working properly a complete circuit is maintained
between the tool and the energy source.
*However, if the tool is damaged the person may come in contact with the
electricity and can become a path for the current.
*The person will be shocked!!

3. *The following is a list of a common electrical hazards found on construction
sites:
1)Improper grounding 2) Exposed electrical parts

4. *The following is a list of a common electrical hazards found on construction
sites:
3) Overloaded circuits 4) Damaged insulation

5. *The following is a list of a common electrical hazards found on construction
sites:
5) Wet conditions 6) Damaged tools and equipment

6. *A willing, positive attitude towards safety will help make a safer work
environment.
*Always consider these safety precautions:
Personal protective equipment (PPE)
 Inspect tools
Lock out/ Tag - out

7. *Personal protective equipment (PPE)
PPE for electrical hazards include:
• hard hats,
• rubber or insulating gloves ,
• insulating clothing.
“Not all gloves can be used to prevent
electric shock”.

8. *Inspect tools
Inspect tools and cords completely before using them:
• cracks
• damaged insulation
• broken ground pins
• frayed line cord
• loose parts
• any other damage

9. *Lock out/Tag – out
Workers must ensure electricity is off and “lockedout” before work
is performed.

10. *An earthquake is the shaking of the surface of the Earth, resulting from the
sudden release of energy in the Earth's lithosphere that creates seismic
waves.

11. *Even if you don’t live or work in an earthquake-prone area, don’t dismiss the
threat.
*Hazards that workers may encounter during and after an earthquake
are :-
Being struck by a building’s structural components
Being burned by fires resulting from gas leaks or electrical shorts
Being exposed to released chemicals.

12. *Before the quake
Ensure workers have a designated safe place
Participate in a “Great ShakeOut” drill
Instruct employees on topics such as first aid and how to use a fire
extinguisher.
Inform workers of the plan and discuss earthquakes with workers.
A survey have to be conducted in areas where there is high risk of
earthquakes to identify potential hazards that can occur.

13. *During the quake
Look for furniture or materials that could fall and strike workers
Provide Specific procedures for employers and workers in high-rise buildings
for evacuation from the site

14. *After the quake
Expect aftershocks.
Check water, gas, and electric lines for damage. If any are damaged, shut off
the valves.
 Move carefully and watch out for things that have fallen or broken
Be on the lookout for fires.

15. Earthquake also causes:
Tsunamis
Floods
Landslides
Tsunamis :
These are occurred when earthquake occur in water bodies.
It results in the damage of building due to heavy tides in the coastal region.
Floods :
Outbreak of heavy dams or reservoirs results in the formation of
floods during earthquake.
Landslides :
It also affects the structural components due to earthquake

16. *The occurrence of a natural electrical
discharge of very short duration and high
voltage between a cloud and the ground or
within a cloud, accompanied by a bright flash
and typically also thunder
*A lightning strike is a massive electrical
discharge between the atmosphere and an
earth-bound object. A lightning bolt can heat
the surrounding air to 50,000 degrees
Fahrenheit—that’s five times hotter than the
sun—and can contain up to 300kV of energy.

17. Lightning kills about 80 people in the
U.S. each year and injures hundreds.
Among construction workers,
labourers, machine operators,
engineers, roofers, and pipefitters have
been struck by lightning most often on
the job. But lightning can hit anyone in
the wrong place at the wrong time.
Lightning can hit the same place many
times too.

18. A body hit by lightning will show various
signs of trauma. Like a gunshot, a
lightning strike causes both an exit and
entrance wound, marking where the
current both entered and left the
victim. Lichtenberg scarring, which
outlines ruptured blood vessels,
frequently covers the body in odd,
almost beautiful, spiderweb patterns

19. *Fallen Wires
*Electrical Fires
*Forest fires

20. Have a plan
Postpone activities
Sensitive electronics should be unplugged
Keep away from electrical equipment, wiring and water
pipes

21. Plan in advance your evacuation/safety measures (look for dark
clouds and increased wind and/or you hear thunder)
Avoid water, high ground, open spaces, metal objects; find shelter in
a substantial building
Primary source of shelter
Facility with plumbing
Secondary source of shelter
Vehicle

22. Avoid:
OPEN AREAS such as fields, construction sites, recreation areas
WATER such as ocean, lakes, swimming pools, rivers
HIGH PLACES
TREES
SMALL OPEN STRUCTURES such as bus stops, rain shelters, picnic
shelters, dugouts, gazebos
TALL STRUCTURES such as communications towers, flag or light
poles

23. If a storm is near Do NOT:
 Be the tallest object in an area.
 Stand out in the open.
 Stand under a tree. (If the tree is hit, you can be too.)
 Stand in a open shelter, like a bus shelter.
 Stand next to metal objects – pipes or light poles or door frames or
metal fences or communication towers – indoors or out.
 Stay next to water – ponds or running water – indoors or out. (Do
not take a shower.)
 Use plug-in power tools or machines – indoors or out.
 Use a plug-in telephone (or a computer with a modem) – indoors or
out.

24. Do:
 Get into an enclosed building – like a house or shopping centre or school
or office building.
 Get into a car, van, truck, or bus with the windows closed all the way. Do
not touch the doors or other metal inside. (Open cabs on heavy
equipment will not protect you. A convertible with the top up will not
protect you. Rubber tires will not protect you.)

25. Avoid:
BLEACHERS (metal or wood)
METAL FENCES OR METAL OBJECTS such as carts, agricultural or
construction equipment, golf carts, telephone lines or power
lines, pipelines, or steel fabrications
LEANING AGAINST CARS OR METAL OBJECTS, GET OFF OF
BICYCLES AND MOTORCYCLES
HOLDING METAL OBJECTS such as fishing rods, golf clubs, ski
poles, tennis rackets, tools

26. Check Weather channel or NOAA weather radio (at the jobsite—
especially in summer months)
Safe shelters include: fully enclosed metal vehicles with windows up,
large permanent buildings, low ground
Unsafe areas include: near flag poles, fences, light poles, trees, open
fields, golf carts, picnic pavilions, bus stops

27. Relevant INDIAN Standards
Is 5216 :1982 guide for safety procedures and practices in electrical work.
Is 732 : 1989 code of practice for electrical wiring installation.
Is 2309 : 1989 code of practice for protection of buildings and allied
structures against lighting.
Is 3043 : 1987 code of practice for earthing.
Is 7689 : 1987 guide for the control of undesirable static electricity.
Is 8437 : 1993 effects of current passing through human body.

28. Lightning’s distance: Count the time from the flash to the bang—for
each 5 seconds between, the lightning is 1 mile away (activate lightning
safety plan at count of 30 or 6 miles away) and don’t resume activities
for 30 minutes—it’s called the 30-30 rule

29. The presence of explosive and highly flammable in a structure
may increase the risk to persons or structure or high rise buildings and
vicinity in the event of a lighting stroke for this reason higher degree of
protection is essential for the structure or building. Protection of a
different degree may be secure in case of both self protecting and other
structures by installation of various types of protection equipment such
as vertical and horizontal air terminals
Lightning protection for high rise building

30. If you feel your hair stand on end, skin tingle, or hear crackling
noises (signs of an imminent lightning strike) assume a
“lightning-safe position.”

31. Fire fighting system for electrical equipment
Electricity has made life full of comfort and easy and it also create heavy
destructive power
Safety management and monitory system has to ensure that :
 Safety to self
Safety to consumer
Safety to equipment apparatus and building
Safety to fellow workmen
Safety to public

32.  Safety includes safety of equipment as well as safety of personal.
 The safety of the equipment is generally provided by the use of protective
devices such as switch gear and control gears, fuses, relays, etc.
 Safety of the personal is ensured by not only employing protective devices
but also educating them about the safety precautions and practices

33. If outside:
Crouch on the ground
Weight on the balls of your feet
Heels together
Head lowered
Eyes closed
Ears covered

34. Injured persons do not carry an electrical charge; apply first-aid (if
trained) & call emergency number
Administer first aid as quick as possible
if unconscious: Check breathing and pulse
Person has a pulse, but not breathing: Begin CPR
Check for other injuries
Most die from heart attacks/stop breathing

35. If not CPR qualified:
Call EMS immediately
Keep them calm
Stay with them until help arrives