That is not accurate.
Before a nuclear power plant begins operations, the licensee must establish or obtain a financial mechanism such as a trust fund or a guarantee from its parent company to ensure there will be sufficient money to pay for the ultimate decommissioning of the facility. Each nuclear power plant licensee must report to the NRC every two years the status of its decommissioning funding for each reactor or share of a reactor that it owns. The report must estimate the minimum amount needed for decommissioning by using the formulas found in 10 CFR 50.75(c). Licensees may alternatively determine a site-specific funding estimate, provided that amount is greater than the generic decommissioning estimate.
Source: http://www.nrc.gov/reading-rm/doc-collections/fact-sheets/decommissioning.html#funds
You think it really follows that process?
If you believe that, then you also believe that they fine and imprison those that finance or materially support terrorism.