Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [nuclear-engineering]

The tag has no usage guidance.

1
vote
2answers
287 views

How did the RBMK control rod design cause an increase in reactivity when moved downwards?

I have been trying to understand a particular aspect of the Chernobyl accident - the role of the graphite displacers on the end of the control rods. The basic story is that the graphite displacers ...
2
votes
1answer
81 views

Was the explosion of the Chernobyl nuclear reactor a 'true' nuclear explosion?

Was the second - the big - explosion of the reactor core in the Chernobyl catastrophe a true nuclear explosion? There have been those who have said that it was ... but sayings to this effect do not ...
1
vote
0answers
67 views

How can we increase the efficiency of external combustion engines?

Many external combustion engines working on the stirling cycle have been designed. Theoritically they have an efficiency equal to the Carnot efficiency but are unable to reach it experimentally. How ...
-1
votes
1answer
57 views

Can fusion be used to synthesize precious metals? [closed]

According to https://en.wikipedia.org/wiki/Synthesis_of_precious_metals, precious metals can be synthsized using fission. I think that if we found a way to do it with fusion, it would be more ...
1
vote
0answers
20 views

Dose rate through shielding from Co-60 to verify Monte Carlo result?

I need to calculate the dose rate leaking from sealed Co-60 sources. Let's say the activity of a source is 7 TBq. The source is tube shaped, 2 mm radius and 10 mm in height. There is 5 cm of ...
0
votes
2answers
50 views

Would a large dome structure prevent widespread effects of nuclear plant explosions?

In both the Fukushima and Chernobyl incidents, widespread contamination would have been prevented had both facilities been enclosed within a larger structure. While existing plant designs call for ...
0
votes
1answer
60 views

Why didn't the Fukushima turbine supply electricity to the residual heat removal system? [closed]

Instead the pump relied on the diesel generators, why didn't it just use the residual heat to generate electricity? P.s. The question is very specific to the residual heat generated after inserting ...
3
votes
2answers
45 views

Nuclear wastegate thermal dissipation systems?

How do shoreline nuclear facilities lower the temperature of wastewater generated by their cooling systems before it enters the ocean?
5
votes
2answers
123 views

Do ships powered by nuclear reactors use water for shielding?

On a different Stack, I encountered an answer that was making a comparison to nuclear powered naval ships. It was stated that the physical shielding being used was various kinds of metals. This seems.....
0
votes
2answers
90 views

When backup cooling fails in reactors without passive safety, what is the risk of radioactive contamination?

Most/all nuclear fission reactors require cooling. Due to radioactive decay heat, this is true even when the reactor is switched off. Hence, there are requirements for nuclear plants to have power ...
-1
votes
1answer
811 views

How does a nuclear reactor initiate nuclear fission? [closed]

How do we start a nuclear chain reaction? For example, if we wanted to do it this weekend, what would we need, and what are the basic steps? I'm not looking for a text book response or highly detailed ...
6
votes
2answers
88 views

Summary of major outage management works needed in the 4th decade of a nuclear reactor?

I've noticed that quite a few commercial nuclear reactors have an extended outage (they close down for several months) some time late in their third decade, and the maintenance works during the ...
6
votes
2answers
342 views

How does thermonuclear warhead yield scale with size?

The Tsar Bomba packed a yield of 50 megatons into a package 2.1m in diameter by 8m long. Assuming that the lead tamper modification was not used (which boosts the yield of the Tsar Bomba design to ...