Danielle Allen: Hello and welcome to the After pop. This is the part of the show where we take a conversation from the main episode and slow things down a bit, unpack some of the terms, and explain how the nuclear industry actually works behind the scenes in the episode with Ahmet Tokpinar from Bechtel we talked about something that shows up constantly in major infrastructure projects, but doesn't always get explained clearly that term is E-P-C-E-P-C stands for Engineering, procurement and Construction. If you've ever wondered who actually builds a nuclear power plant.

The answer usually involves an EPC company. Utilities operate plans, reactor vendors, design reactors, regulators license them. But EPC companies are the ones who take the entire system and physically bring it into reality.

They turned thousands of drawings, analysis, safety systems and regulatory requirements into concrete steel pipes, control systems, and eventually a working power plant. So today we're going to break down what an EPC actually means, and more importantly, why these companies are going to matter enormously over the next two decades as the world tries to build more nuclear plants.

Again, first engineering. Let's start with the E. In EPC,

Engineering is where the project becomes technically real. When a reactor vendor develops a design, whether that's a large reactor or a small modular reactor, that design still has to be adapted to the specific site where it will be built.

That means engineers have to answer questions like, how does this reactor integrate with the electrical grid? How will the cooling systems interact with the local water source? How do we design structures that can withstand earthquakes, floods, and extreme weather? How do we route thousands of pipes, cables, and safety systems, through the plant without interfering with one another?

And in nuclear plants, this gets extremely complex very quickly.

A single nuclear facility, can contain tens of thousands of components and millions of individual parts.

That means all of the nuclear parts have to meet nuclear safety standards, regulatory requirements, and quality assurance protocols. That means engineering isn't just design, it's systems integration. It's figuring out how mechanical systems, electrical systems, civil structures, instrumentation, and digital controls all work together in a way that is safe, testable, and licensable.

And the better the engineering is upfront, the smoother everything else goes later

Next. Procurement.

Now we're onto the PE and EPC. This is where the project turns from drawings into physical components. Procurement involves sourcing the massive list of equipment and materials needed to build the plant and for nuclear projects, this is not like ordering office supplies.

These components can include things like reactor vessels, steam generators, pumps and valves, control systems, specialized piping, concrete structures, steel modules and electrical equipment to name a few. Many of these components require specialized manufacturing, sometimes years in advance, and because this is nuclear, every component has to meet extremely strict quality assurance and traceability standards.

You need to know where a material came from, how it was fabricated, how it was tested, and how it was transported. Procurement teams coordinate with manufacturers all over the world to make sure these parts arrive at the right time, in the right order, and meet the required specifications.

If procurement slips up, construction can grind to a halt.

So this phase is actually about supply chain orchestration at an enormous scale.

If we're serious about building the next generation of nuclear power plants, we need more than concrete and containment domes. We need people, engineers welders, licensing professionals, project managers, I&C specialists, operators, the people behind the build. That's where a nuclear talent scout comes in.

We source directly for companies to find the people who can actually move projects forward, the ones who understand safety culture, regulatory rigor, and how to execute on time and on budget. If you're ready to step into the next phase of nuclear, or you're hiring for it, head over to nucleartalentscout.com

Danielle Allen: Because the future of nuclear energy isn't just designed, it's staffed now, back to the show.

Danielle Allen: Finally, construction.

That's where we reach the C. In EPC, this is the phase most people picture when they think about building a power plant. Huge cranes, concrete pours, steel structures rising from the ground.

But nuclear construction is also one of the most precision driven construction environments in the world. Components have high tolerances measured in millimeters. Installation must follow detailed procedures. Welding inspections and testing are performed under strict oversight, and the sequencing matters a lot.

You can't install certain systems until the structures are complete. You can't energize electrical systems until safety verifications are done. You can't load nuclear fuel until an enormous amount of checks and regulatory approvals are completed.

Construction is really the culmination of everything that happened in the engineering and procurement phase. It's where all of those plans and parts finally come together. So why does all of this matter?

Because over the next two decades, the world is going to need a lot more energy, which means a lot more nuclear infrastructure, not just reactors, but the entire ecosystem around them.

If countries want clean, reliable electricity, industrial heat, hydrogen production, and potentially nuclear powered chipping or remote energy systems, they will need companies capable of executing extremely complex builds. That's where EPC companies come in.

They provide the organizational capacity to manage massive projects that involve thousands of workers, dozens or hundreds of suppliers, complex regulatory environments and multi-year construction timelines. They coordinate engineers, craft workers, manufacturers, project managers, safety teams, and regulators, and they do it while trying to keep projects on schedule, on time, on budget.

Historically, nuclear construction slowed down in many countries over several decades, which means one of the challenges now is rebuilding the workforce and industrial capability needed to deliver these projects consistently.

That includes licensing engineers, welders, project managers, quality assurance specialists. In other words, building nuclear plants isn't just about reactor technology, it's about industrial capacity.

There are a few trends that EPC companies are focusing on to make future builds faster and more predictable.

One is modular construction. Instead of building everything piece by piece at the site, larger components or entire sections of the plant can be fabricated in factories than transported to the construction site.

That allows for higher quality control and potential shorter construction timelines. Another area is digital engineering and project management tools, modern modeling, simulation and digital twin technologies help teams coordinate design, track construction, progress, and identify issues earlier.

And finally, there's a big focus on standardization. If multiple plants use the same reactor design and construction approach, teams can replicate successful builds rather than reinventing the process every single time. This is something countries like France and South Korea demonstrated in their earlier waves of nuclear construction, and it's something many developers are trying to return to as the industry grows.

Again,

So. When you hear the term EPC, remember that it represents the full arc of bringing a nuclear project to life engineering design and integrating the systems procurement, sourcing the specialized components and construction, assembling the facilities safely and precisely. It's the bridge between reactor innovation and actual power plants producing electricity on the grid.

And as the world looks towards expanding nuclear energy in the future, EPC capability will be one of the biggest factors determining how quickly and how successfully those projects can happen.

If you wanna hear the full episode with Ahmet Tokpinar from Bechtel, check out the main episode where we go deeper into how these projects are actually managed and what the future of nuclear construction could look like.

On our next episode, we'll be hearing from a laborer and welder who actually worked on Vogtle units three and four. Thank you so much for listening to Naked Nuclear. Until next time, stay curious.