Vogtle Electric Generating Plant Units 3 & 4 (AP1000 Reactors)
Waynesboro, Georgia, USA [INTERNATIONAL] · Construction started 2009; Unit 3 commercial operation July 2023; Unit 4 expected commercial operation early 2024 · Estimated $34 billion (total project cost for Units 3 & 4, equivalent to approx. £27 billion at current exchange rates) from initial $14 billion
The judgement call
Account-gated at launchThe Vogtle project is a critical case study for new nuclear construction in the US, highlighting the complexities and risks associated with large-scale nuclear projects. - The project faced challenges with incomplete designs at the start of construction, leading to costly rework and delays. - Lessons learned from Vogtle are being incorporated into updates for the AP1000 design certification to streamline future nuclear builds. - Despite the challenges, the project represents the first new nuclear units built in the US in decades, contributing to carbon-free energy generation.
Key engineering challenges
Managing massive cost overruns (more than double the original estimate) and significant delays (years behind schedule) due to design changes, regulatory hurdles, and construction inefficiencies. - Implementing modular construction techniques, which proved challenging in practice, leading to rework and quality control issues. - Addressing manufacturing defects and construction errors, such as incorrectly installed supports and welding issues. - Navigating the bankruptcy of original lead contractor Westinghouse, leading to a change in construction management. - Integrating complex systems and components for a first-of-a-kind AP1000 reactor in the US.
Project facts
- Client / owner
- Southern Company (Georgia Power, Oglethorpe Power, MEAG Power, Dalton Utilities)
- Lead contractor
- Westinghouse Electric Company (original lead); Bechtel (took over construction management)
- Lead designers
- Westinghouse Electric Company (AP1000 design)
- Project type
- new build
- Scale
- Two AP1000 pressurized water reactors, each 1100 MWe gross output; Generation III+ reactor; modular construction approach.
- Disciplines
- Nuclear engineering; civil; structural; mechanical; electrical; control systems; materials science; safety engineering
- Standards & frameworks
- US Nuclear Regulatory Commission (NRC) regulations; AP1000 design certification; relevant US engineering and construction standards.
Sources: Wikipedia: Vogtle Electric Generating Plant (https://en.wikipedia.org/wiki/Vogtle_Electric_Generating_Plant) - Columbia University Energy Policy: Vogtle Unit 3 Has Started Commercial Operations. What's Next for the AP1000? (https://www.energypolicy.columbia.edu/vogtle-unit-3-has-started-commercial-operations-whats-next-for-the-ap1000/) - Power-Eng: Westinghouse seeks to update AP1000 design certification with Vogtle lessons built in (https://www.power-eng.com/nuclear/westinghouse-seeks-to-update-ap1000-design-certification-with-vogtle-lessons-built-in/) - World Nuclear News: AP1000 remains attractive option for US market, says MIT (https://world-nuclear-news.org/Articles/AP1000-remains-attractive-option-for-US-market-say)