One reactor pressure vessel like this is ~1 GW for, if well maintained, 60+ years. Yes, you can produce them like this. If the demand is up and regulation is right. If not, because of organised anti-nuclear propaganda that gets weaved into the minds and the bureaucracy over decades, drizzling sand in every single administrative act around the nuclear industry, you get just a few tries with one-of-a-kind production that is vastly more expensive. That's how you get the messes like Hinkley Point C or Flamanville 3.
This constant grinding against that technology is crazy given its potential to saving the environment and to be cheap. If it would meet fair ground like renewables, get the chance to settle in and mass produce, nuclear power has the chance to be one of the cheapest sources of power in Europe.
Why?
Even if it all went great, so cheap batteries, PV, onshore wind, hydrogen economy etc, this all together with large grid expansion to utilise the weather portfolio effects all over Europe, we'd be looking at a power supply that needs more than twice the resources than a full nuclear one. For several materials like steel and copper, we'd be looking at close to an order of magnitude more than an all nuclear Europe.
Looking at the bill of raw materials you need for different power plants, nuclear power is somewhere around 16 to 25 ct/W. Photovoltaics is at ~15 ct/W, onshore wind is at >25 ct/W. But keep in mind, from one Watt of nuclear you get 3 to 8 times more power compared to PV and, 2 - 4 times more compared to onshore wind.
To get the full plant up and running, you need to triple the PV value or apply factor 6 on onshore wind. The recent nuclear builds in France and UK are looking at the factor of ~60!
That's the result if you need to learn to build and regulate nuclear construction again, if you want to apply your own set of security rules, and if you want to build up the supply chain from scratch. What you see down there resulted in the factor of 10. So with proper regulation and a trained supply chain, this is possible again. Then, we're looking at ~50 €/MWh production costs. Add 25 €/MWh and you are fully supplied at the city gate (with grid, overbuild, a bit of storage and backup). The normalised equivalent with renewables, if things go really well, are ~45 €/MWh base + ~75 €/MWh full supply at city gate adder. So 75 vs. 120...
So anyone who's not pushing for rebuilding a well trained nuclear supply chain in Europe, like indicated below, with strong but efficient regulations, doesn't like cheap power in Europe. It's sadly that easy and that complicated, given the current state of industry, nuclear stigma and bureaucracy on that continent.
For an all electric Europe, we'd need about 900 of those pressure vessels. Luckily 10% are already there. And still will be if you maintain them well and not shutting them down (looking at you, Spain or Belgium!).
Despite 3 years of progress, AI is still worse than me at stuff I understand, but unfathomably brilliant outside my area of expertise. Wonder why this is