EnviroNews World News, Feb 6, 2017 (emphasis added): The astronomical readings bring major concerns to a cleanup operation already spiraling out of control — flying blindly into territory previously uncharted in the history of nuclear power…. To top it off, 530 sieverts per hour might not be the worst cleanup workers have to worry about. TEPCO also stated that surface-level radiation readings from parts inside the plant’s pressure vessels can reach “several thousand sieverts per hour,” compounding what are already seemingly unsurmountable tasks in the decommissioning process. Esteemed nuclear expert, engineer, and former reactor operator Arnie Gundersen told EnviroNews World News in an email that the position of Fairewinds, his educational non-profit, is that radiation levels are presently way to high to remove the melted fuel, and that the reactors should be entombed, like was done with Chernobyl’s sarcophagus, for at least a century before attempting dismantlement. “[These readings do] make dismantling the facility almost impossible for 100 or more years, as the exposure to workers would be too significant,” Gundersen said.
Dr. Helen Caldicott, Feb 13, 2017: … it will be almost impossible to “decommission” units 1, 2 and 3 as no human could ever be exposed to such extreme radiation; and that this fact means that Fukushima Daichi will remain a diabolical blot upon Japan and the world for the rest of time, sitting as it does on active earthquake zones… Bottom line, these reactors will never be cleaned up nor decommissioned because such a task is humanly impossible…