Small-break LOCA recovery in B and W plants. [PWR] [electronic resource]
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Online Access |
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Corporate Author: | |
Format: | Government Document Electronic eBook |
Language: | English |
Published: |
Los Alamos, N.M. : Oak Ridge, Tenn. :
Los Alamos National Laboratory ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
1983.
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Subjects: |
Abstract: | A break of approximately 0.0012 m/sup 2/ in the cold leg of a B and W plant results in an interruption of natural circulation when steam accumulates in the hot-leg U-bend. A small-break loss-of-coolant accident of this size was simulated by TRAC-PF1 to evaluate strategies for recovery and for re-establishing natural circulation. In the absence of operator action, core cooling occurs when water supplied by the high-pressure-injection system boils, then is discharged through the break. Raising the steam-generator secondary level, venting steam from the steam-generator secondary, venting steam from the hog-leg U-bend, bumping the reactor-coolant pumps, and injecting a portion of the high-pressure-injection system into the hot-leg U-bend aided in cooling and depressurizing the primary system but were ineffective in re-establishing natural-circulation flows in the primary-coolant loops. |
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Item Description: | Published through SciTech Connect. 01/01/1983. "la-ur-83-2786" " conf-830901-17" "DE84001316" Anticipated and abnormal plant transients in light water reactors conference, Jackson, WY, USA, 26 Sep 1983. Henninger, R.J.; DeMuth, N.S.; Ireland, J.R. |
Physical Description: | Pages: 13 : digital, PDF file. |