SMR #5 - evinCi - micro reactor Flashcards by Missy Balachorek

What happens when fuel is spent

A New, fueled eVinci is transported to site, installed and brought online within the spare bay
Spent eVinci fuel, in reactor canister, is transported off-site to be stored at licensed facility and eventually a Deep Geological Repository

How well did you know this?

Not at all

Perfectly

where does fuelling/ refuelling occur

Fuel handling or refueling will be done at Westinghouse facility, not on customer site

How well did you know this?

Not at all

Perfectly

Spent fuel reactor is refuelled ______

refueled in factory and redeployed to same or new site

How well did you know this?

Not at all

Perfectly

eVinci Microreactor Applications

Industrial Heat and Power
Space Missions
Hydrogen Production
Remote Industrial (Mining)
Off Grid Communities (Heat & Power)
Micro-Grids/ Critical Infrastructure
Disaster Recovery
Universities
Strategic Military Installations

How well did you know this?

Not at all

Perfectly

__ MW Electrical Power & ____District Heating

5
Low-Grade

How well did you know this?

Not at all

Perfectly

The eVinci Advantage

*Passively cooled, low pressure
* Facility-scalable in 5-MWe increments
* Operate as grid-forming or grid-following with milli-second load follow response capability
* Transportable for reduced site work and simplified decommissioning

How well did you know this?

Not at all

Perfectly

The eVinci Advantage

*Passively ____, _____ pressure
* Facility-scalable in ____ increments
* Operate as _____or _____ with milli-second load follow response capability
* Transportable for ___ AND ____

cooled
low

5-MWe

grid-forming
grid-following

reduced site work and simplified decommissioning

How well did you know this?

Not at all

Perfectly

advantages

reliable
sustainable
safe
simple

How well did you know this?

Not at all

Perfectly

reliable

Reactor core is designed to run for
eight or more full-power years

How well did you know this?

Not at all

Perfectly

sustainable

Each eVinci microreactor will reduce
up to 55,000 tons of CO2/year

How well did you know this?

Not at all

Perfectly

safe

Designed with diverse and
redundant safety features, from
TRISO to passive heat removal

How well did you know this?

Not at all

Perfectly

simple

Heat pipe technology allows for
simplified design and eliminates
numerous components & controls

How well did you know this?

Not at all

Perfectly

internal components

Control Drum
Heat Pipes
Primary Heat Exchanger
TRISO Fuel (19.75% U235)
Graphite Core Block
Shut Down Rod

How well did you know this?

Not at all

Perfectly

The reactivity control drums are used to ___

moderate the power output of eVinci, such as for load-following applications or shut down. Otherwise, they are stationary

How well did you know this?

Not at all

Perfectly

Nuclear battery designed for ___

safe and
reliable electricity and heat generation

How well did you know this?

Not at all

Perfectly

Technical Capabilities

___MWe + ~__MWth @ 150C cogeneration
Or __MWth @750 C heat only
Minimum _year refueling cycle
_____-following capability
Transportable for ease of _____
____ of spent fuel ____
Flexible for ____
Cost-competitive _____
Minimal ____
Mature _____

5
8
15

8
High speed load

installation

Elimination
storage on site

heat and power
plant lifecycle

onsite personnel
technology, manufacturing, and regulatory readiness

How well did you know this?

Not at all

Perfectly

components

Shut Down Rods
TRSISO fuel
control drums
heat pipes
shielding and bulkhead
graphite core block
steel canister
radial reflector
primary heat exchanger

How well did you know this?

Not at all

Perfectly

What is a heat pipe?

A____device with a ___and____ fluid
Circulates the working fluid from ___to____and back again in a _____using ____
Operates at _____ pressure
Behaves as an _____spreader
_____ response to change in temperature

passive heat transfer
wick & working

liquid to
vapor
sealed container
capillary forces

sub-atmospheric
isothermal heat

Passive thermal power

How well did you know this?

Not at all

Perfectly

What is a heat pipe

A passive heat transfer device with a
wick & working fluid
Circulates the working fluid from liquid to
vapor and back again in a sealed container
using capillary forces
Operates at sub-atmospheric pressure
Behaves as an isothermal heat spreader
Passive thermal power response to
change in temperature

Design, Operational & Safety Benefits Enabled by Heat Pipes

No Active Cooling (Pumps)
Less Instruments
Less Pressure-Induced Failures or Leaks
Fault-Tolerant (Capable of Operating Thru Heat Pipe Failures)
No Flow-Induced Effects (Corrosion & Vibration)
No Reactor Chemical Control
No Pressure for Fission Product Dispersion
No Coolant Filtration
Not a Pressure Vessel

Heat Pipe Technology

___ filled, ____pressure ____enable ____

Sodium
low
heat pipes
passive heat removal

eVinci uses ___% enriched TRISO fuel

19.75

The design uses ____fuel

HALEU UCO TRi-structural ISOtropic particle

Unlike most other reactors, eVinci microreactor is designed to operate at
___ pressures, eliminating risk of ___

atmospheric
fission product release.

* The highest level of safety of fuel and radiation is maintained within many ___

redundant layers of functional containment.

TRISO Benefits

* TRISO fuel is a kernel of Uranium Oxycarbide (UCO) coated with tri-structural isotropic (TRISO) layers * TRISO fuel is the only high temperature fuel that has regulatory acceptance and an extensive qualification basis * The eVinci design baseline safety case credits the TRISO layers as a functional containment barrier

TRISO Benefits * TRISO fuel is a kernel of ____ coated with ____layers * TRISO fuel is the only ____fuel that has ___ acceptance and an extensive qualification basis * The eVinci design baseline safety case credits the TRISO layers as a ___

Uranium Oxycarbide (UCO) tri-structural isotropic (TRISO) high temperature fuel regulatory functional containment barrier

Why HALEU?

* Thousands of coated TRISO fuel particles are compacted into a graphite compact to form the TRISO fuel form * HALEU enrichment levels provide the necessary uranium loading in the kernel to power the eVinci reactor to target power output and lifetime * Compared to fuel of lower enrichment, HALEU allows for smaller reactor designs, longer core lifetimes, and increased fuel efficiency

Why HALEU * ___ of coated TRISO fuel particles are compacted into a ___to form the TRISO fuel form * HALEU enrichment levels provide the necessary ____in the kernel to power the eVinci reactor to ____AND ___ * Compared to fuel of lower enrichment, HALEU allows for ______

Thousands graphite compact uranium loading Target power output and lifetime smaller reactor designs, longer core lifetimes, and increased fuel efficiency

Fuel Fabrication Supply Steps * There is___commercial-scale production of HALEU feed for advanced reactor fuel production outside of Russia * Two challenges to address: enrichment to ___% and change of chemical form post-enrichment to be suitable for enrichment (“deconversion”)

currently no 20 post-enrichment to be suitable for enrichment (“deconversion”)

see image slide 15

HALEU Availability Timeline * The ___ Government is running the “HALEU Availability Program” (HAP) with a goal of funding enrichment and deconversion by approximately ___to establish the market

US 2028

HALEU Availability Timeline * Urenco has privately shared their intention to build HALEU enrichment capacity in the __—with or without HAP funding—with first material available as early as ___

US mid-2028

HALEU Availability Timeline * Centrus is enriching small quantities of HALEU under ____program and will also compete via HAP to expand that capacity

another US government

HALEU Availability Timeline * US Government is making as much legacy stock available as possible until commercial availability—but this stock will be primarily for ___

R&D/test reactors

Commercial HALEU availability expected in ___+

2030

Lack of domestic ____ supply poses risk, but eVinci is engaging with both the Department of Energy (DOE) and independent enrichers

High Assay Low Enriched Uranium (HALEU)

Research Applications * Initial screening shows the following isotopes may be well suited for production in the eVinci Microreactor:

* Chromium-51 * Dysprosium-165 * Holmium-166 * Iodine-125 * Iodine-131 * Iridium-192 * Palladium-103 * Rhenium-186 * Rhenium-188 * Samarium-153 * Sodium-24 * Ytterbium-169 * Scandium-46 * Silver-111 * Sulphur-35 * Tellurium-123m * Thallium-204 * Thulium-170 * Copper-67 * Gold-198 * Mercury-197 * Palladium-109 * Phosphorus-33 * Platinum-195m

slide 18 diagram

Nuclear Test Reactor at INL’s EBR-II Dome * __% scale by power of standard design * __ cross-sectional dimensions of the fuel assembly

20 Prototypic

Nuclear Test Reactor De-Risks Commercialization Primary purpose is ____

to validate our reactor multi-physics ahead of NRC certification

Nuclear Test Reactor De-Risks Commercialization * At same time, it provides ______ - - -

significant risk-reduction as an integrated nuclear system * Licensing certainty of technology & timeline * Customer confidence through nuclear demo * Component costs & supply chain validated

NTR Lifecycle

Initial Assembly Ship structures, system, and components (SSCs) to test facility Install in Demonstration of Microreactor Experiments (DOME) Fuel Test Reactor Testing and Operation Disassembly and Transportation Storage Defueling and Disassembly

slide 22

slide 25 and 26