Thomas Marcille, Віце-президент з реакторних технологій Holtec International

1. a generation ahead by design
SMR, LLC
A Holtec International Company
Holtec Technology Center, One Holtec Drive
Camden, NJ 08104, USA
www.smrllc.com
SMR-160
A Safe and Secure Nuclear Energy Future for Ukraine

2. X
a generation ahead by design
2This presentation material’s ownership by Holtec International is protected by international laws on intellectual properties.
SMR-160
The SMR-160 is a unique power plant - offering an important and immediate near- and
long-term solution and opportunity for regional and nation state electric power needs.

3. X
a generation ahead by design
SMR-160 is a small power plant, producing 160MW of carbon free electricity via a uniquely simple
and safe nuclear reactor. Its principal benefits include ultimate safety, physical security, flexible
siting, excellent lifetime economics, national energy security, and with an execution plan option to
include substantial localization for major fabrication works and components within national nuclear
equipment and power plant supply chains.
SMR-160 is an integrated design-for-manufacturability solution that leverages state of the art US
nuclear and manufacturing technology to address regional and national power and security interests
around the world. The United States has strong and certain aspirations to deploy safe and secure
nuclear power plants globally, including helping to decarbonize the earth while producing massive
amounts of stable and secure electricity. The SMR-160 provides unique opportunities for the US to
help major global partners realize critical energy needs, while strengthening strategic national
partnerships, through state of the art US high-technology products and services.
As regards lifetime economics: the SMR-160 Preliminary Design specification underpins a
comprehensive capital cost 80-year cost-of-electricity evaluation as a function of variable cost
elements (capital cost and debt, discount rate, costs of labor, fees, fuel, spares and consumables,
taxes, returns to investors and profits, etc.). Lifetime economics are extraordinary…
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SMR-160

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a generation ahead by design
A walk-away safe power plant, SMR-160 produces safe, secure power with a nuclear reactor that incorporates
a tough, robust and compact construction structure and footprint for immunity to natural disasters and
malicious attacks, while relying on gravity and natural circulation for managing the plant’s heat during all
normal and accident modes, for an indefinite period of time. Translation: this power plant is ultimately secure
and safe. No outside storm or attack, or inside malady or event will harm the plant or people.
oWalk-away safe: this means the plant has an unlimited ability to manage its own heat in the event of an incident or
accident, not relying on offsite power or resources for its assured safety and security.
oNatural circulation provides assured reactor coolant system flow, thereby eliminating the need for reactor coolant
pumps to 1) transfer thermal energy for power production during normal operation and 2) remove decay heat from
the reactor core and spent fuel pool when shutdown. Passive natural circulation cooling of decay heat from all
plant fuel, without the need for electricity or pumps, facilitates a walk-away safe solution that is unique to the
market.
oSMR-160 eliminates the need for external piping to connect the steam generator and pressurizer to the reactor
pressure vessel, which enables this uniquely simple and safe natural circulation machine, and eliminates
susceptibilities to accidents when power is lost, or pipes leak or break.
4This presentation material’s ownership by Holtec International is protected by international laws on intellectual properties.
SMR-160 Characteristics & Features

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a generation ahead by design
Mindful of escalating threats to industrial sites around the world in the 21st century, SMR-160 has been
designed to look after its own safety, even when struck by a surpassingly adverse event such as a
crashing aircraft. Unconditional safety regardless of the severity of an attack delivered to the plant is a
centerpiece of SMR-160's design.
An SMR-160 plant requires little land; merely 20,000 sq. meters of land for a water cooled site, 30,000
sq. meters for an air-cooled site. With its safety and security ensured, SMR-160 can be located close to
population centers without risk to public health and safety.
A revolutionary approach to the security and handling of radioactive nuclear fuel, leveraging state-of-the-
art and globally deployed Holtec International technology and hardware, facilitates a radically safe and
site-able solution for national industrial power needs and populations.
oThe SMR-160 power plant includes a unique spent fuel management solution, whereby an extremely small
volume of irradiated fuel is stored inside the plant’s containment vessel in a passively cooled arrangement.
That spent fuel is quickly moved to an integrated on-site interim storage facility, utilizing Holtec
International’s HI-STORM UMMAX system, an underground array of Vertical Ventilated Module (VVM) dry
spent fuel storage modules. Revolutionary.
5This presentation material’s ownership by Holtec International is protected by international laws on intellectual properties.
SMR-160 Characteristics & Features

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a generation ahead by design
Nuclear power plants have long service lives and excellent output capacities. The SMR-160 has an 80-
year service life, made possible by its simple geometry and material and operational characteristics. The
impact of this long life is dramatically favorable lifetime economics and power stability. A fleet of SMR-
160s will be an enduring national asset to any country.
oTo ensure a long service life, SMR-160, unlike other large and small pressurized water reactors, does not
use borated water within the reactor coolant. Instead it uses demineralized water which, along with other
design features, is intended to ensure a minimum 80-year Service Life of the plant.
Fukushima taught the world valuable lessons about the potential for natural disasters to cause massive
national power and electricity delivery disruptions, while recent global cyber actions have demonstrated
real susceptibilities in national and global nuclear and energy infrastructures. Black start capable SMR-
160s are a huge asset to add to a country’s energy safety and security toolbox.
oSMR-160 is truly black start capable for assured energy safety and security, ever more critical in a changing
world, with natural and evil threats to manage. Large nuclear reactors need off site power to restart, and
cyber susceptible grids and infrastructures pose serious safety and security concerns for these plants if they
are unable to restart (quickly).
6This presentation material’s ownership by Holtec International is protected by international laws on intellectual properties.
SMR-160 Characteristics & Features

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a generation ahead by design
7This presentation material’s ownership by Holtec International is protected by international laws on intellectual properties.
SMR-160 Technology Overview

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a generation ahead by design
Integrated Reactor Pressure Vessel (RPV) and Steam Generator
(SG) Design
oSimple, practical Integral PWR (iPWR)
Advanced natural circulation PWR – no reactor coolant pumps
oOffset Design
Direct access to Core without disassembly of Reactor Coolant System
(RCS).
oVessel to vessel connection
Eliminates hot/cold leg piping – no large break LOCA.
oReduced RPV penetrations
no penetrations below top of nuclear Core.
oReduced primary piping.
oDependable external Control Rod Drive Mechanism via RPV Head.
oEasy access for SG inspection and tube plugging.
oIntegral Pressurizer
No piping to RCS - no large break LOCA.
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Reactor Coolant System

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a generation ahead by design
 Simple, safe Natural Circulation Submerged Bundle Cooling
System to operate in liquid (only) phase
 Designed to remove stored energy and decay heat from reactor
coolant system (RCS) for a class of design basis accidents, with
no reliance on electricity or pumps to operate
 Passive, buoyancy driven, directly cools the primary coolant
 Design Features:
o Simple design: no pumps
o Single phase (liquid) cooling instead of two-phase (i.e. evaporation &
condensation)
 Eliminates challenges with non-condensable gas ingress and its effect on
condensation
 Incorporates a simple and reliable heat exchanger (PDHR HX2) in the annular
reservoir
 Eliminates in-service inspection challenges for safety systems
o Small auxiliary safety heat exchanger (PDHR HX1) inside containment
 Reduced operating pressure compared to conventional ECCS systems
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Passive Decay Heat Removal System (PDHR)

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a generation ahead by design
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Secondary Decay Heat Removal System (SDHR)
 Diverse secondary cooling system to provide decay heat removal,
independent from PDHR - with no reliance on electricity or pumps
to operate
 Passive, buoyancy driven and cools primary coolant by
condensing steam from steam generator (SG)
 Steam is condensed in heat exchanger located in annular
reservoir and returned back to SG
 Design Features:
o Diverse alternate means to cool core independent of PDHR
o Uses condensation - efficient means to remove heat
o Heat exchanger is kept flooded prior to initiation eliminating non-
condensable gases
o Maintain thermal equilibrium during cooldown
o Simple design: no pumps

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 De-pressurizes reactor coolant system to allow passive injection of
makeup water to the core following a loss of coolant accident (LOCA)
to maintain water inventory above core
 Simplified system with only two stages and uses traditional valve
types
o First stage allows for PCMWS tanks (accumulators) to inject water into the
reactor pressure vessel
o Second stage allows for gravity injection via sump strainers located in
containment water storage tanks (CWSTs)
 Piping layout including safety relief valve discharge
 Support structures designed to accommodate the forces and
moments developed during valve discharge
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Automatic Depressurization System
Pressurizer
Safety Relief
Valves
ADS
Stage#2
Valves
Pressurizer
ADS
Stage#1
Valves
Valve
Support
Structure

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a generation ahead by design
 The SMR-160 power plant includes a unique spent fuel
management solution, whereby an extremely small volume of
irradiated fuel is stored inside the plant’s containment vessel in a
passively cooled arrangement
o Uniquely safe amongst all designed and operating reactors
 Spent fuel is managed and handled inside containment, then
quickly moved to an integrated on-site interim storage facility,
utilizing Holtec International state-of-the-art, globally licensed and
deployed MPC and HI-TRAC technology and casks
 This spent fuel handling and management solution makes the plant
both safer and smarter, circumventing costly future plant
modifications, typical for virtually all existing reactors when they
must transition to long-term fuel storage outside the plant
 The SMR-160 reference plant incorporates on-site spent fuel
storage with Holtec International’s HI-STORM UMMAX system, an
underground array of Vertical Ventilated Module (VVM) dry spent
fuel storage modules, impervious to dangers or threats
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Integral Spent Fuel Management

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 The Containment Structure is a free standing cylindrical steel
pressure vessel, to enclose and secure the reactor
 That pressure vessel is a large passive heat exchanger, rejecting
heat to the environment to passively cool the containment during
containment pressurization accidents
o Heat rejection from the Containment via a Containment Reservoir for
more than 85 days passive cooling through the vessel wall
 The Containment integrates equipment hatches and flanges to
facilitate simplified construction, maintenance and operations
 Preliminary mechanical design complete
o Individual modules/panels - accommodates shipping, reduced field weld
and field fit-up challenges
o Support structures anchor the vessel to the basemat
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Containment Structure (CS)
Containment
Structure
Support
Main Equipment
Hatch
Steam
Generator
Replacement
Hatch

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 The Containment Enclosure Structure is a Seismic Category-I
steel-concrete structure that provides protection from external
events, and contains a reservoir of water (annular reservoir)
o Steel-concrete (SC) fabrication modules form a tough, robust shield
and enclosure structure for all reactor and plant safety systems,
ensuring immunity from natural disasters and man-made attacks
 Mechanical/civil layout
o Vapor vent and access to replace steam generator combined
o Vent is protected from aircraft/missile impact and prevents rain water
ingress
 Individual fabrication modules developed
o Accommodates shipping limitations
o Reduces field welds
o Addresses field fit up concerns
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Containment Enclosure Structure (CES)
CES Vent
Fabrication
Module
Containment
Structure Supports
Basemat

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 Layout of internal systems
o Steam generator access for maintenance
o Permits refueling operations
o Piping and HVAC layouts to minimize cost and maximize
functional operational spaces
o Meets system separation/independence requirements
 Water Management Post-LOCA
o Containment Water Storage Tanks (CWSTs) provide
sufficient volume required for minimum water head required
for gravity injection and long term cooling
o Containment areas to minimize flooded areas post-LOCA
o Water volume sufficient for 24 hours without any water return
from condensation on the containment structure
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Containment Internals (CIS)
CWSTs
Spent Fuel
Pool

16. X
a generation ahead by design
 Fuel – SMR-160 utilizes a proven fuel configuration in
parameters known to be within the manufacturing limits of
existing suppliers. Enveloping parameters used for design,
working forward with GE within their GESTAR licensing pathway
 Instruments – Incorporated instruments utilize proven
technologies, including in-core gamma thermometers
 Valves – Available size and types of valves selected for
application, with articulated valve testing programs
 Penetrations – Environmentally qualified components to ensure
practical technologies and supply chain solutions
16This presentation material’s ownership by Holtec International is protected by international laws on intellectual properties.
Certainty to Deployment – Challenges and Opportunities
SMR-160 Eco-System
SMR-160
Eco-System
HTC
Valves
Penetrations
CRDMs
Fuel
Tubes
Forging
EPCM
Turbine
Instrumentation
& Control
Instruments
O&M

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a generation ahead by design
 Forgings – All forgings designed in close communication with
potential supply partners. First unit lead times (RPV / SG) ~ 1
year
 EPCM – EPCM Partners, SNC-Lavalin within integrated work
plan; early engagement in design minimizes risk
 Turbine – Small LP turbines available to readily meet steam
conditions, with identified commercial partner options
 Instrumentation & Control – Partner Mitsubishi provides proven,
accepted solution. Assures certainty in I&C, HFE, Simulator
 O&M – Partner PSEG provides insights and oversight with
respect to operations and maintenance
 CRDMs – Alignment with CRDM supplier, with Nth-of-a-kind
technology solutions for state-of-the-art performance and cost
17This presentation material’s ownership by Holtec International is protected by international laws on intellectual properties.
Certainty to Deployment – Challenges and Opportunities
SMR-160 Eco-System
SMR-160
Eco-System
HTC
Valves
Penetrations
CRDMs
Fuel
Tubes
Forging
EPCM
Turbine
Instrumentation
& Control
Instruments
O&M