Last October, at the Fukushima Daiichi Nuclear Power Plant, a hose came off while cleaning pipes at a contaminated water treatment facility, spraying a subcontractor worker with radioactive waste fluid and contaminating his skin. TEPCO says that one of the causes was unscheduled work being carried out at the site, and as a measure to prevent recurrence, TEPCo employees will be present to confirm any changes to work procedures.

“There was a risk of a serious violation, we will continue to monitor improvement efforts.