Summary: The international space station, a joint venture involving NASA, Japan, Canada, the European Space Agency, and Russia, will be a permanently orbiting laboratory used to conduct scientific research under weightless conditions. NASA estimates its share of the costs to build the space station at $17.4 billion. The space station is now scheduled to be completed by 2002. As of April 1996, the prime contract for the space station was nearly $90 million over cost and about $88 million behind schedule. Overall, the prime contract is 45-percent complete and these variances are within planned funding levels. However, many cost threats remain, and financial reserves needed for unexpected contingencies remain limited during the next several years. If available resources prove inadequate, program managers either will be forced to exceed the annual funding limitation or will have to defer or rephase other activities, potentially delaying the space station's schedule and increasing its overall cost. NASA has tried to ensure that the prime development contractors and its major subcontractors implement effective performance measurement systems for managing their contractors, but a complete performance measurement system is still not in place. Also, NASA has made slower progress implementing effective performance measurement systems on its contractors for developing ground-based and on-orbit capabilities for using and operating the space station.
