WASHINGTON (AP) — Congress has moved to avert an impending shutdown of the federal helium reserve, a key supplier of the lighter-than-air gas used in a products ranging from party balloons to MRI machines.

The Federal Helium Program, which provides about 42 percent of the nation’s helium from a storage site in Texas, was set to shut down Oct. 7 unless lawmakers intervened. Closing the reserve could cause a worldwide helium shortage.