Effects of dissolved gas and downstream geometry during blowdown of a subcooled liquid. [PWR]
Conference
·
OSTI ID:6179342
The effects of dissolved gas and downstream geometry during a blowdown transient were investigated experimentally. It was observed that dissolved gas did not significantly affect the blowdown process if no additional surface was available in the test section to provide nucleation sites. However, if sufficient nucleation sites were available in the system, large amplitude, continuous pressure oscillations were observed when the system contained a large amount of dissolved gas. The delay in blowdown times caused by these oscillations is between 20 to 30%. A single-phase, incompressible, quasi-steady model was developed to predict the pressure history in the blowdown vessel and the discharge flowrate.
- Research Organization:
- Argonne National Lab., IL (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6179342
- Report Number(s):
- CONF-781234--2
- Country of Publication:
- United States
- Language:
- English
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Fri Dec 31 23:00:00 EST 1976
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Tue Dec 19 23:00:00 EST 1961
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OSTI ID:4806286
Related Subjects
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210200 -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
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220900* -- Nuclear Reactor Technology-- Reactor Safety
ACCIDENTS
BLOWDOWN
BUBBLES
ECCS
ENGINEERED SAFETY SYSTEMS
FLUID MECHANICS
HYDRAULICS
LOSS OF COOLANT
MECHANICS
PERFORMANCE
PRESSURE GRADIENTS
PWR TYPE REACTORS
REACTOR ACCIDENTS
REACTOR PROTECTION SYSTEMS
REACTOR SAFETY
REACTORS
SAFETY
WATER COOLED REACTORS
WATER MODERATED REACTORS