N.R.C. Votes for Upgrades to Some Reactor Vents

By MATTHEW WALD

Published: March 19, 2013

WASHINGTON — The Nuclear Regulatory Commission voted 3 to 2 on Tuesday to require improvements to the emergency vents at 31 American reactors that share design similarities with the Japanese reactors that melted down two years ago. The agency stopped short, however, of requiring filters to scrub out radioactive particles coming through those vents.
http://www.nytimes.com/2013/03/20/business/energy-environment/nrc-votes-for-upgrades-to-fukushima-like-reactor-vents.html?_r=0