The biggest risk of these kind of micro reactors is what happens when they are abandoned and / or receive no investment, maintenance, repairs, etc. for years or decades. What is a catastrophic failure like in that case?

For example, a water and sewer utility near me, serving a similar scale customer base as one of these reactors (a few hundred to a thousand or so), just had to get put into receivership. All the infrastructure has been falling apart for years and the utility had not been investing anything into upkeep, putting its own customers in danger. What if they had owned one of these reactors?