Chernobyl

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HYHYHY!!!

Welcome back once again! 

Today's blog is all about the biggest man made disaster, effects of which are evident till date. YES! Chernobyl it is. The Beirut's recent chemical disaster made me think about Chernobyl and it's aftermath. This information about Chernobyl is from Reader's Digest's special edition. I saw very few people explain the series of events that took place on the day of the disaster while many focused on the aftermath. Here's a little insight on the events that occurred just before the accident.




What exactly happened:

On the night of 25-26, April 1986, while shutting down the reactor for maintenance, a very over due test were being conducted to ascertain the capacity of the turbine's (which was nearing the end of life) power generation, in the event of a a power cut. And due to various reasons, the reactor was running at a low power (unstable). The reactor used here is RBMK-1000 which is very unstable in low power condition. This reactor is mainly selected for the purpose of extracting plutonium by removing the fuel rods from the reactor core while the system is still running (highly calculated risk though) . The Graphite tipped control rods were used to moderate the reaction and the fuel rods with light water is used to cool down the system. 

But when the system became unstable, immediate and emergency shutdown procedure was initiated. And due to the plant's flawed design was taken light and instead of leaving at least 15 control rods in the reactor, only 7 were left removing 204/211 control rods. This lead to the switch off of various other safety switches resulting in a massive catastrophic event effects of which are evident till date. 

Immediate control measures:

To lessen the casualties of the massive mishap, few warriors took great risk and helped to contain the reaction through land and air.

Procedures followed:
  •  40 tonnes of boric acid -to stop the nuclear reaction
  • 800 tonnes of mineral dolomite- to absorb the heat generated
  • 1800 tonnes of sand and mud- to extinguish the fires
  • 2400 tonnes of lead - to screen the radiation
  • A tunnel dug under the reactor and a cooling system using liquid nitrogen was installed to prevent further reaction due to the trapped heat.
Later 'Sarchophagus' (protective concrete shield) was constructed on which a steel roof was erected with the help of aeroplanes and remote controls, in order to decrease the risk of the reaction of the leftover fuel in the reactor.

Even today the health effects due to the radioactive exposure is seen in that accident zone. Events like these can be prevented with proper safety measures. The recent Beirut chemical explosion involving the blast of 2750 tonnes of Ammonium nitrate could have been prevented if  standard storage procedures were taken in prior. 

My prayers are with the people of Beirut. 

See you all soon! 

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Link- https://www.instagram.com/wat_i_read/
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Story source: Reader's Digest special edition, Amazing reads.

BUBYE!!!





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