India Nuclear News and Discussion 4 July 2011

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Amber G.
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Re: India Nuclear News and Discussion 4 July 2011

Postby Amber G. » 22 Jul 2020 10:56

Varoon Shekhar wrote:Everytime I see a new posting under this thread, I am just hoping it's to report the commissioning of a reactor, whether in Kalpakkam, Kakrapar, Rawatbhatta or Jaitpur. Alas, no news in this regard :(

Here is one tweet from our PM sent just now :) Congratulations to our nuclear scientists for achieving criticality of Kakrapar Atomic Power Plant-3! This indigenously designed 700 MWe KAPP-3 reactor is a shining example of Make in India. And a trailblazer for many such future achievements!

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Re: India Nuclear News and Discussion 4 July 2011

Postby Mort Walker » 22 Jul 2020 11:16

^^^Good news indeed.

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Re: India Nuclear News and Discussion 4 July 2011

Postby Varoon Shekhar » 22 Jul 2020 13:24

Amber G. wrote:
Varoon Shekhar wrote:Everytime I see a new posting under this thread, I am just hoping it's to report the commissioning of a reactor, whether in Kalpakkam, Kakrapar, Rawatbhatta or Jaitpur. Alas, no news in this regard :(


Here is one tweet from our PM sent just now :) Congratulations to our nuclear scientists for achieving criticality of Kakrapar Atomic Power Plant-3! This indigenously designed 700 MWe KAPP-3 reactor is a shining example of Make in India. And a trailblazer for many such future achievements!


Excellent! Some positive news on this thread at last :)

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Re: India Nuclear News and Discussion 4 July 2011

Postby Vips » 22 Jul 2020 19:48

Fantastic news. Hoping for some update (Good or bad) on Breeder reactor now.

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Re: India Nuclear News and Discussion 4 July 2011

Postby SSridhar » 04 Aug 2020 10:02

Whither Nuclear Energy? - Vinayak Chatterjee, Business Standard

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Re: India Nuclear News and Discussion 4 July 2011

Postby Hiten » 06 Aug 2020 08:06

Vips wrote:Fantastic news. Hoping for some update (Good or bad) on Breeder reactor now.


the PFBR now set to become Critical in December 2021

via https://www.spansen.com/2020/08/decembe ... -pfbr.html

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Re: India Nuclear News and Discussion 4 July 2011

Postby Vips » 07 Aug 2020 04:09

Thanks Hiten for the update. Due to the long issue with the Sodium Cooling that our scientists have not been able to overcome for some years now i was fearing the unthinkable of the present reactor being a design failure and its possible scrapping(setting the program back by at least a decade).

I am keeping my fingers crossed and hoping the reactor reaches criticality at least in Dec 2021.

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Re: India Nuclear News and Discussion 4 July 2011

Postby Hiten » 18 Aug 2020 00:35

These Photographs Of India's Under Construction CIRUS Reactor Is The Stuff That Says, "Forward Thinking Nation"
https://www.spansen.com/2020/08/photogr ... ation.html

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Re: India Nuclear News and Discussion 4 July 2011

Postby Hiten » 20 Sep 2020 13:19


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Re: India Nuclear News and Discussion 4 July 2011

Postby dinesh_kimar » 20 Sep 2020 13:42

^ it may be a schematic for Proton Therapy device, used in medical applications. Safer than X rays.

The focused beams are too weak for the Proton beam synchrotron (PBS) accelerators used at CERN. They apparently need 1000s of tons of magnets.

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Re: India Nuclear News and Discussion 4 July 2011

Postby Anujan » 20 Sep 2020 14:11

It is not a proton therapy device: Look at the size, 13m tall, 6m wide.

It is an accelerator driven sub critical reactor (ADSR)

https://en.wikipedia.org/wiki/Accelerat ... al_reactor

Image

Amber G.
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Re: India Nuclear News and Discussion 4 July 2011

Postby Amber G. » 21 Sep 2020 02:07


Asked it to google and got this ((All in 3 mouse clicks and even before read Anjun's post ):

schematic of 750 MW (thermal one-way coupled ADS :)

(Yes, one-way coupled Indian ADS( accelerator driven systems) with low energy proton beam).

Amber G.
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Re: India Nuclear News and Discussion 4 July 2011

Postby Amber G. » 24 Sep 2020 20:04

Dr. Sekhar Basu, former Secretary of the Department of Atomic Energy, an unassuming thinker of keen insights, a problem solver, a committed scientist- technologist and a big hearted cheerful man passed away.

He leaves a rich legacy and a wide imprint that will always be remembered . He worked on several mega science projects and many Indian and international scientists had privilege of knowing/working with him

You will be missed Dr. Basu.

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Re: India Nuclear News and Discussion 4 July 2011

Postby Mukesh.Kumar » 27 Sep 2020 22:46

Finally mainstreaming of a rationale viewpoint on Nuclear Power. Apologies but it's the BeeB finally putting this out.

Nuclear power: Are we too anxious about the risks of radiation?

Tongue in cheek I would like to say that BRF as usual ahead of the curve. Recall the lengthy discussions and posts by people when we were discussing 123 and Kudankulum. And Shiv jis posts on the effect of a TNW.

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Re: India Nuclear News and Discussion 4 July 2011

Postby Hiten » 29 Sep 2020 18:32

Amber G. wrote:

Asked it to google and got this ((All in 3 mouse clicks and even before read Anjun's post ):

schematic of 750 MW (thermal one-way coupled ADS :)

(Yes, one-way coupled Indian ADS( accelerator driven systems) with low energy proton beam).


yes. That is the proposed Indian design. Hybrid design to lower Accelerator's Power consumption.

a write-up
https://www.spansen.com/2020/09/this-ad ... india.html

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Re: India Nuclear News and Discussion 4 July 2011

Postby nam » 02 Oct 2020 19:10

I never thought there will be video of this incident.

https://twitter.com/CrazyinRussia/status/1311931152169660416

The Soviets used a nuke to block a burning oil well and the whole incident was secret. Fundamentally a nuke test, which was not known to the west.

This is an example of how big countries can carry out nuke test and none will be wiser..

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Re: India Nuclear News and Discussion 4 July 2011

Postby Mukesh.Kumar » 18 Oct 2020 21:24

Interesting research by Dr. Meera Chadha on how to lessen impact of large explosions with possible applications on Nuclear attacks.

Mathematician Dr Meera Chadha Finds A Way To Reduce Effects Of A Nuclear Explosion; Here’s Her Inspiring Story

Using mathematical modelling, Dr Chadha has shown that the deadly effects of nuclear weapons can be mitigated to some extent with the introduction of dust particles. The otherwise-irritating substance (allergic folks can testify) is found to reduce the energy released from the blast and curtail the distance over which damage can occur.

“The aim of the study was clear from the beginning,” Dr Chadha tells Swarajya. “To mitigate or reduce the effects of an explosion, like the one in Beirut, but a nuclear explosion in particular.”

Dr Chadha used the bombing of Hiroshima as a reference. That bomb had a yield of 15 kilotonnes and was dropped over the city from a height of more than half a kilometre. Flash burns were felt nearly 1 km away and buildings were destroyed over a 1.6 km radius.

“I thought that if I could reduce that 1.6 km radius and take it down to about 1 km or 1.2 km, we would be moving in the right direction,” she said contemplatively.

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Re: India Nuclear News and Discussion 4 July 2011

Postby Mukesh.Kumar » 18 Oct 2020 21:28

Here's the Abstract of her paper and the full paper can be requested from here.

Abstract
In this paper, we have studied the impact created by the introduction of up to 5% dust particles in enhancing the decay of blast waves produced by a nuclear explosion. A mathematical model is designed and modified using appropriate assumptions, the most important being treating a nuclear explosion as a point source of energy. A system of partial differential equations describing the one-dimensional, adiabatic, unsteady flow of a relaxing gas with dust particles and radiation effects is considered. The symmetric nature of an explosion is captured using the Lie group invariance and self-similar solutions obtained for the gas undergoing strong shocks. The enhancements in decay caused by varying the quantity of dust are studied. The energy released and the damage radius are found to decrease with time with an increase in the dust parameters.


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