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DNFSB’s Summers ends board tenure, extending agency’s loss of quorum
Lee
Summers
The Defense Nuclear Facilities Safety Board, the independent agency responsible for ensuring that Department of Energy facilities are protective of public health and safety, announced that the board’s acting chairman, Thomas Summers, has concluded his service with the agency, having completed his second term as a board member on October 18.
Summers’ departure leaves Patricia Lee, who joined the DNFSB after being confirmed by the Senate in July 2024, as the board’s only remaining member and acting chair. Lee’s DNFSB board term ends in October 2027.
Jörg Reimann, Matthias Behnke
Fusion Science and Technology | Volume 38 | Number 3 | November 2000 | Pages 299-309
Technical Paper | Special Issue on Beryllium Technology for Fusion | doi.org/10.13182/FST00-A36143
Articles are hosted by Taylor and Francis Online.
Uniaxial compression tests with monosized and binary beryllium pebble beds were performed in a temperature range between ambient temperature and 480 °C and pressures up to 8 MPa. Empirical correlations for the moduli of deformation are given for the different bed types and first measurements for thermal creep are presented. Stress-strain relations depend sensitively on the initial state of the bed and with this on the filling procedure. This is of special importance for binary beds where it must be ensured that a homogeneous distribution of small pebbles in the bed is obtained. First results for triaxial compression tests for monosized and binary beds are reported. The internal friction of these beds is significantly larger than that of beds with particles with smooth surfaces.