Previous in Forum: Digital Law? Ownership of File vs. Content?   Next in Forum: How to Profit from Data Collection
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
Rate Comments: Nested
Lehman57
Guru
Engineering Fields - Nuclear Engineering - New Member

Join Date: Sep 2009
Location: Louisville, OH
Posts: 1925
Good Answers: 36

Fast Nuclear Reactor Burn-Up

07/20/2013 9:55 AM

I have several time seen that thermal reactors have <1% burn-up, and that fast reactors can achieve >99%, but have not seen the reason. Is <1% burn-up for thermal reactors due to the percentage of U-235, as I have recently seen; or to the buildup of neutron absorbing fission products? I find the former hard to believe, because, in my understanding, the fuel charge is usually enriched.

__________________
 Lehman57
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
truth is not a compromise
Guru

Join Date: Apr 2011
Posts: 8006
Good Answers: 286
#1

Re: Fast Nuclear Reactor Burn-Up

07/21/2013 12:54 AM

The 1% figure quoted for burn up probably is calculated based on total uranium. Thermal fission reactprs don't birn 239, which is a majority ofnatural and low enriched uranium. . Thermal reactors can run on uranium enriched to 4% U235, but won't maintain criticality with the buildup of fission produxt poisons probably below 3% enrichment. . Fast reactors convert more u238 to p239 to use as fuel.

__________________
 Eternal vigilance is the price of knowledge. - George Santayana
Register to Reply Score 1 for Good Answer
No more "Almost" Good Answers.
Register to Reply
Have a Different Question?

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!

Previous in Forum: Digital Law? Ownership of File vs. Content?   Next in Forum: How to Profit from Data Collection

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
General Discussion:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (92 right now)
Show Members
Advertisement