#REAKTOR 6 CRACK DIRECTIONS SERIES#

535-1979, are based on plate growth, but these naturally-aged 12-year old cells showed no significant plate growth. Presently accepted accelerated-aging methods for qualifying batteries, per IEEE Std. Post-test examination revealed a common failure mode, the cracking at the abnormally brittle, positive lead bus-bar/post interface more » further examination showed that the failure zone was extremely coarse grained and extensively corroded. Of nine electrically active cells, six failed during seismic testing over a range of imposed g-level loads in excess of a 1-g ZPA.

#REAKTOR 6 CRACK DIRECTIONS SERIES#

In general the test philosophy was to monitor the electrical properties including discharge capacity of cells through a graduated series of g-level step increases until either the shake-table limits were reached or until electrical failure of the cells occurred. Seismic tests with three cell configurations were performed using a triaxial shake table: single-cell tests, rigidly mounted multi-cell (three) tests, mounted in a typical battery rack and single-cell tests specifically aimed towards examining propagation of pre-existing case cracks. Fitzpatrick Nuclear Power Station operated by the New York Power Authority. This report covers the first test series of an extensive program using 12-year old, lead-calcium, Gould NCX-2250 cells, from the James A. The seismic-fragility response of naturally-aged, nuclear station, safety-related batteries is of interest for two reasons: (1) to determine actual failure modes and thresholds and (2) to determine the validity of using the electrical capacity of individual cells as an indicator of the end-of-life of a battery, given a seismic event.

Reaktor 6 crack directions