Argonne National Laboratory Reports

The behavior of FTR-type, mixed-oxide, pre-irradiated "high-power-structure" fuel during a simulation of an FTR loss-of-flow accident was studied in the Mark-IIA integral TREAT loop. Analysis of the data leads to a postulated scenario (sequence and timing) of events in this test. This scenario is presented, together with the calculated timing of events obtained by use of SAS code

Above cutoff impedance measurements of pumping holes for the collider liner

A holed liner was considered for the Superconducting Super Collider (SSC) Collider Ring because of vacuum problems caused by photon-induced desorption. The liner would serve to shield the cold surface of the beam tube from the synchrotron radiation and the holes (or slots) would allow distributed pumping by gas-absorption material that could be placed between the liner and the beam tube. The impedance of holes and slots in a liner were studied by means of simulations using both MAFIA and HFSS, analytical modelling, wire measurements and electron beam measurements

Argonne National Laboratory Reports

The behavior of FTR-type, mixed-oxide, pre-irradiated, ''intermediate-power-structure'' fuel during a simulation of an FTR loss-of-flow accident was studied in the Mark-IIA integral TREAT loop. Analysis of the data reported here leads to a postulated scenario (sequence and timing) of events in the test. This scenario is presented, together with the calculated timing of events obtained by use of the SAS code

Summary and evaluation: fuel dynamics loss-of-flow experiments (tests L2, L3, and L4)

Three similar experiments conducted to support the analyses of hypothetical LMFBR unprotected-loss-of-flow accidents are summarized and evaluated. The tests, designated L2, L3, and L4, provided experimental data against which accident-analysis codes could be compared, so as to guide further analysis and modeling of the initiating phases of the hypothetical accident. The tests were conducted using seven-pin bundles of mixed-oxide fuel pins in Mark-II flowing-sodium loops in the TREAT reactor. Test L2 used fresh fuel. Tests L3 and L4 used irradiated fuel pins having, respectively, ''intermediate-power'' (no central void) and ''high-power'' (fully developed central void) microstructure. 12 references. (auth

Closing Barts: community and resistance in contemporary UK hospital policy

Debates concerning the nature and extent of hospital provision in London, England are longstanding. Reviews in the 1990s have focused on a perceived over-provision and recommended rationalisation. This paper explores the representations of place which emerged in the discourses surrounding the possible closure of St Bartholomew's Hospital (Barts), London. Through a discourse analysis of official and unofficial reports, Parliamentary debates, press releases, campaign material and coverage in the London Evening Standard and other newspapers, we assess resistance to closure and the construction of communities dedicated to the retention of Barts. Four different representations of Bart's are identified: as community resource, as a site of expertise, as a heritage symbol and as a site pertinent to the identities of Londoners. The effectiveness of these different strategies is considered and their positioning and use within the 'Campaign for Barts' is evaluated. We conclude that, notwithstanding the potential to present the (possibly temporary) retention of Barts as a recognition of its status as a locus of particular medical expertise, the potency of this health care facility as a symbol both of London and of medical tradition was the crucial factor in its reprieve