From: Peter Mattisson Subject: DOE conducted a subcritical test called "Bagpipe" on sep-26 Date: Saturday, September 26, 1998 11:30 PM News Media Contact For Immediate Release Derek S. Scammell, 702-295-3521 September 26, 1998 Scammelld@nv.doe.gov David Schwoegler, Livermore, 925-422-6900 Newsguy@llnl.gov Fourth Subcritical Experiment Conducted Successfully at the Department of Energy's Nevada Test Site The Department of Energy today conducted the fourth "subcritical" experiment at the Nevada Test Site. Subcritical experiments are scientific experiments to obtain technical information in support of the Department of Energy's program to maintain the safety and reliability of the nuclear weapons stockpile without nuclear testing. Analysis of data from monitoring instruments confirmed that the experiment remained subcritical, that is, no nuclear chain reaction occurred. The Department of Energy's Lawrence Livermore National Laboratory conducted the experiment at 3:07 p.m.(PDT) to obtain information about how key properties of plutonium change as the plutonium ages. The data will help support the development of computer simulations that will be used to determine the safety and reliability of the nation's nuclear weapons stockpile, without nuclear testing. The subcritical experiments use chemical high explosives to generate high pressures that are applied to nuclear weapon materials. The experiments are consistent with the Comprehensive Test Ban Treaty because there is no nuclear explosion. NV-98-50 -- 30 -- For more information visit the Shundahai Network: http://www.shundahai.org/ and Nevada test site: http://www.nv.doe.gov/ Peter