By
Idowu Oyebanjo
Electrocution is
basically death caused by an electric shock. While this is not a favoured
topic, it is important to expose the facts about the Nigerian Power System and
the high potential that it possesses to cause more deaths due to electrocution
in the short to medium term if things are done improperly as they are now.
One of the anti-climax
of not having stable electricity for over 50 years now in Nigeria is the
fact that one did not hear so much of deaths due to electric shock from
electrical appliances or devices. This is mainly because there was no “light”.
With the recent increase in availability of gas to power stations, and the
attendant availability of electricity supply, the weakness of the power system
will come to the fore and more electrical safety accidents are bound to occur.
Unfortunately, because electricity is a good servant but a bad master, the
fatal results of not following electrical principles in the design, operation,
maintenance and control of the power system is death by electrocution! In the
last few weeks alone, we have had the death of a staff of one of the
electricity companies while he was carrying out his day to day activities on a
power line. But more recently, the case of Oluchi Anekwe, a 3rd year student at
the University of
Lagos has reinforced the
calls by experts for a holistic review of the operation of the Nigerian Power
System.
The minimum current a
human can feel depends on the current type viz Alternating Current (AC) or
Direct Current (DC) and the frequency for AC systems. If this current is high
enough, it can cause tissue damage and ventricular fibrillation of the heart
which leads to cardiac arrest. The potential seriousness of an electric shock
depends on the path of the body the current passes. It is most dangerous if a
path through the heart is established. Other possible consequences of electric
shocks include but not limited to deep skin burns, nervous breakdown, micro and
macro shocks to mention but a few.
The only way to reverse
the current trend is to allow technically intensive review of the running of
the Nigerian Power System. Specifications and policies guiding the operation,
control, protection and maintenance of power system plants need to be developed
for use in the Nigerian Electricity Supply Industry. These guidelines must be
enforced in such a way that if any company is found in breach of it, the
penalty or consequence must be very severe. There is therefore an urgent need
for an Health & Safety Executive (HSE) body for the power system. The HSE
must be very powerful with the powers to jail and fine erring individuals or
companies found wanting.
To prevent deaths from
electrocution, significant attention has to be placed on power system
protection. From fuses to relays, adequate protection must be available for any
power circuit or plant to minimise the risk of electric shock or death to
personnel or individuals in the vicinity of or in close contact with power
system plants. Protection settings have to be determined for the entire power
network and the coordination of grading stages for all items on the network is
a must.
*Idowu Oyebanjo CEng
MNSE MIET writes from theUnited
kingdom (oyebanjoidowu@yahoo.com)
Interesting!
ReplyDeleteEye-opening. Engr. Oyebanjo, this merely wets the appetite for more - especially on preventive measures. Please, elaborate, especially, on both what the authorities and the consumers ought to do
ReplyDelete