Nominations of Allison MacFarlane and Kristine Svinicki will go to a floor vote and MacFarlane will be designated chairman if confirmed, succeeding Gregory Jaczko.
MacFarlane is a geologist and nuclear waste expert from George Mason University.
Svinicki has served on the commission since March 2008 and is being renominated for another four-year term.
Sen. Barbara Boxer (D-Calif.), committee chair, agreed to move the nominations to the floor after they agreed to respond to all committee questions and document requests, Charles Clark reported.