In response to concerns about the safety of products from Fukushima, many testing procedures have been put in place. This label on Fukushima rice (photo of bag posted earlier today) details the multiple testing which occurs. They describe multiple levels of safety evaluation.
1) both before and after harvesting, government approved testing is carried out,
2) both at the holding facility and at the refining facility, radiation testing is carried out,
3) the Fukushima rice association carries out 3 factor radiation detection: when the rice reaches the refinery (on the truck) and sample evaluation both prior to and after processing.
Some of this appears to be overlapping, but they are obviously trying to do everything possible to reassure the consumer.