High Rate Transient Mechanical Properties of Unirradiated Fast Reactor Cladding

摘要

Out-of-reactor simulation of hypothetical transient undercooled overpower (TUCOP) events is required to experimentally support computer model determinations of the time, location and mode of fast reactor fuel pin failure under TUCOP conditions. For this purpose the TUCOP FCTT system was developed at HEDL to test cladding specimens at heating rates to 550 exp 0 C/s while controlling diametral strain at rates to 0.5/s. Special developmental features of the TUCOP system are (I) rf induction heater control to allow noise free data sampling, and (II) high speed high pressure valves. (ERA citation 06:033358)