The utility behind Japan's nuclear disaster acknowledged for the first time Friday that it could have avoided the crisis. Tokyo Electric Power Co. said in a statement that it had known safety improvements were needed before last year's tsunami triggered three meltdowns, but it had feared the political, economic and legal consequences of implementing them.

"When looking back on the accident, the problem was that preparations were not made in advance," TEPCO's internal reform task force, led by company President Naomi Hirose, said in the statement. "Could necessary measures have been taken with previous tsunami evaluations? It was possible to take action" by adopting more extensive safety measures, the task force said.

The task force said TEPCO had feared efforts to better protect nuclear facilities from severe accidents such as tsunamis would trigger anti-nuclear sentiment, interfere with operations or increase litigation risks. TEPCO could have mitigated the impact of the accident if it had diversified power and cooling systems by paying closer attention to international standards and recommendations, the statement said. TEPCO also should have trained employees with practical crisis management skills rather than conduct obligatory drills as a formality, it said.

The admissions mark a major reversal for the utility, which had defended its preparedness and crisis management since the March 2011 tsunami. The disaster knocked out power to the Fukushima Dai-ichi nuclear plant, leading to the meltdowns, which forced massive evacuations and will take decades to clean up.