GHG emissions (g CO2 equivalent / kWh)
25.1 — Extract, enrich and deliver fuel
8.2 — Plant construction
11.6 — Plant operation
9.2 — Spent fuel conditioning and storage
12.0 — Deconstruct plant and reclaim land
Since a typical NPP puts out 1000 MW, multiply the above by 1 million to get grams CO2 equivalent for each hour of operation.
NREL document
https://onlinelibrary.wiley.com/doi/full/10.1111/j.1530-9290.2012.00472.x