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A quick look at the post accident review meeting (parm).

出版	Atomic Energy Of Canada Limited, 1986
URL	http://books.google.com.hk/books?id=SQNt0AEACAAJ&hl=&source=gbs_api

註釋Several series of two-phase thermosiphoning experiments have been conducted in the rd-12 loop at the whiteshell nuclear research establishment. this report gives the results of tests in which the primary fluid was gradually drained from the loop while the flow was in natural circulation mode with the surge tank valved out of the system. the object was to investigate the stability of the thermosyphoning flow as the primary coolant became two phase. the experiments indicate that a stable two-phase thermosiphoning flow can usually be established. however as the void in the loop is increased by draining more liquid from the system, large amplitude flow oscillations can occur. under some conditions these flow oscillations lead to cyclical dry-out of the heating elements. generally, the flow oscillations in the two halves of the figure eight geometry are very nearly 180 degrees out-of-phase with each other. three tests were carried out with the outlet headers interconnected. the results suggested that the interconnection prevented oscillations for small quantities of fluid drained. however, even with the interconnection in place flow oscillations were always observed as the quantity of fluid drained was increased. this report describes the test procedure, and gives the results of tests performed up to 1982 august. a complete record of data from all tests is available on magnetic tape at chalk river nuclear laboratories and may be accessed through the cdc-6600 system. funding for this work was shared by atomic energy of canada limited and ontario hydro under the candev program.