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06/06/2016 Page 1
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BWRVIP Mitigation Committee Meeting
Plant Experience Report
San Antonio
15-16 June 2016
Kathryn James
Lead Chemist
@HorizonNuclear
Horizon overview
Established 2009
Acquired by Hitachi November 2012
Provide at least 5.4GW of new capacity
across two sites - c.10 million homes
Deploy Hitachi-GE UK ABWRs
Expect first unit at Wylfa to be operating
in the first half of the 2020s
c.£20billion investment in the UK
Up to 60% of project value could be
spent in UK
Over 350 staff at new Gloucester HQ,
office on Anglesey growing
Wylfa Newydd
Gloucester HQ
Oldbury
@HorizonNuclear
Nuclear in the future UK energy mix
• Energy infrastructure in UK in need of renewal
• c.£110bn of new investment required over next decade
• 50-60GW of new generating capacity by 2025UK’s energy challenge
• Security of supply
• Low-carbon and sustainable
• Affordable – for UK government and consumersStrategic & policy drivers
• Expect around 16GW from new nuclear by 2030
• Deployed alongside other low carbon and baseload sources of electricity UK’s energy future
@HorizonNuclear
Wylfa Newydd – operations
Two Hitachi-GE UK ABWR units, each
1350MW
Commercial operation in first half of the
2020s (first unit)
Supply enough electricity to power five million
homes
Operational life of at least 60 years
Entire station employee complement will be
up to 850
Up to an additional 1000 staff during outage
periods*
Developing operational capabilities and
capacity – WANO, INPO – with potential to
bring in an operational partner alongside us
*Frequency and length to be defined
@HorizonNuclear
ABWR – a proven technology
Safe, reliable and cost competitive
Constructed to time and to budget
Licensed in Japan, Taiwan, USA
Operational - Kashiwazaki-Kariwa-6/7, Hamaoka-5, Shika-2
Under construction - Lungmen (Taiwan), Shimane 3, Ohma
@HorizonNuclear
ABWR assessment and justificationGeneric Design Assessment (GDA)
Step 1 - Assessment agreements signed
March 2013
Step 2 – overview of basic acceptability of the
proposed reactor design construction in the UK
Step 3 – launched August 2014, increasingly
detailed analysis covering Overall Design,
Safety Case and Security Arguments
Step 4 – launched October 2015
Target completion of final design acceptance
(Step 4), end 2017
To make a comment or pose a question on the
process please visit:
http://www.hitachi-hgne-uk-abwr.co.uk/
Steps mentioned here are for the ONR. EA and NRW have slightly different steps including public consultation.
@HorizonNuclear
Delivering Wylfa Newydd
@HorizonNuclear
Complexity of nuclear new build
Grid
Site
Boundary
Access Supply
chain
and skills
WasteOffsite
works
Defences
EcologyJetty
CW System
@HorizonNuclear
Forward priorities
All consents and permits by mid 2018:
End of tech assessment (GDA)……………2017
Development Consent………………………2018
Nuclear Site Licence…………………….….2018
Final Investment Decision early 2019
@HorizonNuclear
Baseline Schedule
Generic Design Assessment
ConstructionDevelopment
PAC 2
Site Licence Application
Development Consent Order All
agre
em
ents
/perm
issio
ns in
pla
ce
(F
ID)
Operation
Unit 1 Commercial Operation, first half of the 2020s
@HorizonNuclear
Corporate structure
Menter Newydd
@HorizonNuclear
Building the company
DeveloperIntelligent Customer
Site Licence Company
Operator/Utility
@HorizonNuclear
Creating an investible project
Investors
To be Site License Company and operator
Contract for Difference
DECC
Counterparty body
Power suppliers
Investor
Power sales
Infrastructure Guarantee
HM Treasury
Export credit agencies
Lenders
Operations partner
Wider supply chain
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Main Workstreams
Delivering Wylfa Newydd
• Technology approval
• Planning & environmental permissions
• Nuclear Site Licence
• Site Development
Growing the Organisation
• Developer
• Intelligent Customer
• Site Licence Company
• Operator/Utility
Creating an Investible Project
• Contract for Difference
• Treasury Guarantee
• Future power sales
• Additional investors
@HorizonNuclear
Chemistry aims to:
- Reduce risk of corrosion and SSC failure to ALARP
- Reduce radiological (Dose) and environmental impact (waste and
discharge) to ALARP
- Determine the UKABWR source term for normal operations and expected
events
RCS Water Chemistry Regime demonstrated to be ALARP:
• Hydrogen Water Chemistry
• Noble Metal Chemical Addition
• Depleted Zinc Oxide Injection
• Optimum iron control
Ref: UKABWR GDA Generic PCSR Chapter 23
– Reactor Chemistry (GA91-9101-0101-23000)
UK ABWR – Chemistry Lead Chemist – Kathryn James([email protected])
@HorizonNuclear
Production of the detailed safety case for all water chemical aspects of the plant.
Defined risks as ALARP (As Low As Reasonably Practicable) for reactor coolant chemistry during commissioning, 1st start up, at power, shutdown and outages.
Source term reduction through material selection, operating practices and regimes
Consideration in the safety case for conventional safety hazards e.g. radiolytic gases in conjunction with UK Health and Safety Legislation
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Chemistry Status in GDA
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UK Safety Case and ALARP
UK Safety Case approach differs from Safety Evaluations:
• Non prescriptive regulators; Goal setting
• Minimum Levels must be met (Basic Safety Limit)
• As Low As Reasonably Practicable; requirement in law to
demonstrate that risks as ALARP:
- Use of relevant good practice
- Demonstration of gross disproportion of ‘cost’ vs
benefit
• Safety Case presents the ALARP argument:
- Claims – Arguments – Evidence
- ‘Safety Case’ documents provide the road map,
engineering documents provide the evidence
@HorizonNuclear
Production of the detailed safety case for all chemical aspects of the plant including those out of scope of GDA:
Make up water treatment plant (demineralised water plant)
Oil chemistry (turbine, transformers etc.)
Stator water and gas chemistry
Laboratory analytical procedures and instruments
Online chemical instrumentation
Storage and use of chemicals including emergency arrangements
Compliance with UK Health and Safety legislation e.g. legionella
Defined risks as ALARP (As Low As Reasonably Practicable) for reactor coolant chemistry in light of current OPEX.
18
Chemistry Status in Site Specific
@HorizonNuclear
Currently reviewing all available OPEX (BWROG, EPRI as well as
Japanese OPEX) to demonstrate to Regulators all risks are
ALARP for all aspects of chemistry safety case.
www.horizonnuclearpower.com
http://www.hitachi-hgne-uk-abwr.co.uk/
Best Practices
@HorizonNuclear
For more information
Horizon Nuclear Power channel
@HorizonNuclear
www.horizonnuclearpower.com
06/06/2016 Page 21
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Thank you
