Related to the rivers & france- it's specific to a certain plant design, newer plants usually don't have such problems. For building experience: it depends. If

Related to the rivers & france- it's specific to a certain plant design, newer plants usually don't have such problems. For building experience: it depends. If the building time is 4-7 years, you can afford to slowly build plants one after another until old plants need to be decommission so you'll get constant workforce