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Title: TRANSIENT TESTS OF THE BSR-II CORE IN THE SPERT I FACILITY

Technical Report ·
DOI:https://doi.org/10.2172/4681360· OSTI ID:4681360

A series of transient tests was performed in Spert I with the Bulk Shielding Reactor II (BSR-II) core to determine the self-limiting properties of this core and to test the response of the reactor control system. The experimental program included measurements of the static parameters, self- limiting transient tests, control-system-shutdown transient tests, low-level start-up tests, and determinations of the reduced prompt neutron lifetime by dynamic and static techniques. The kinetic behavior of the BSR-II self-limiting transient tests showed a general similarity to behavior of self-limiting transient tests performed on other plate-type cores tested at Spert. The control system was found to be more effective in terminating power bursts than was the inherent self-shutdown of the reactor for excursions initiated by reactivity additions of up to an excess reactivity of about 1.8 dollars, corresponding to a reactor period of about 3 msec. For reactivity insertions larger than 1.8 dollars, self-shutdown was more effective than shutdown by external controls in limiting the excursion. In the short-period region where limited or total core damage can occur, no increased protection to the reactor is provided by the control system. (auth)

Research Organization:
Phillips Petroleum Co. Atomic Energy Div., Idaho Falls, Idaho
Sponsoring Organization:
US Atomic Energy Commission (AEC)
DOE Contract Number:
AT(10-1)-205
NSA Number:
NSA-17-024714
OSTI ID:
4681360
Report Number(s):
IDO-16768
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-63
Country of Publication:
United States
Language:
English