16-10-2012, 04:37 PM
INEEL Modular Pebble Bed Reactor
Modular Pebble Bed Reactor.pdf (Size: 384.17 KB / Downloads: 69)
Observations•
No New Construction of Nuclear Plants for Many Years•Current Generation of Plants Can Be Competitive•“Next”Generation of LWRsAre Not Competitive•Focus of LWR Technology is Shifting Outside the US•Nuclear Engineering Education is in Decline
Presentation Objectives
•What’s A Pebble Bed Reactor ?
•MIT/INEEL Program Objectives
•International Activities
•Plan to Build a Reactor Research Facility
•Actions Necessary
•Opportunities
Modular High Temperature Pebble Bed Reactor
•110 MWe
•Helium Cooled
•“Indirect”Cycle
•8 % Enriched Fuel
•Built in 2 Years
•Factory Built
•Site Assembled
•On-line Refueling
•Modules added to meet demand.
•No Reprocessing
•High Burnup>90,000 Mwd/MT
•Direct Disposal of HLW
TRISO Fuel Particle --“Microsphere
0.9mm diameter•~ 11,000 in every pebble•109microspheresin core•Fission products retained inside microsphere•TRISO acts as a pressure vessel•Reliability–Defective coatings during manufacture–~ 1 defect in every fuel pebble