Leak rate
Importance of Using Proper Crack Morphology Parameters for Leak-rate Analyses in LBB Evaluations
... The crack morphology parameters in Table 1 were used with the interpolation scheme in Figure 3. In addition, the case of an air fatigue crack using only the local roughness and no number of turns was performed. The crack ...
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Damaged Concrete Wall and Leak Rate under Simulated Conditions
... The leak rate prediction of air and steam through a cracked concrete wall is an extremely important issue in assessing the safety of nuclear reactor containment ...air leak rate and steam ...
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The effect of metabolic depression on proton leak rate in mitochondria from hibernating frogs
... proton leak rate might be reduced in hibernating mammals by measuring mitochondrial state 4 respiration, which is a rough indicator of proton ...respiration rate between hibernating and control ...
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Leak rate prediction for Leak-before-Break assessments in Nuclear pipework using a new finite element method
... in Leak-before-Break analysis. This is because the leak rate can reduce due to crack closure ...a leak rate model and was coupled to the structure through a convection law and pressure ...
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Qinshan Phase 3 CANDU 6 Reactor Buildings Proof Pressure Test and Leak Rate Test
... Integrated Leak Rate Test (ILRT) be conducted to demonstrate the structural integrity and the leak tightness of the containment ...the leak tightness of the R/B containment structure at the ...
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Predicting Leak Rate as a Function of Pressure for Prestressed Concrete Pressure Vessels
... (leak rate) beyond the initial tearing ...a leak rate through aperture formulation put forth by Rizkalla, calculates leak rates which are reasonably close to those measured in the ...
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Practical Application of Restraint of Pressure-induced Bending Phenomenon in Leak Rate Calculations (G412)
... NRC) Leak-Before-Break (LBB) analysis procedures require the calculation of the crack-opening displacement (COD) under plant operating ...postulated leak rate, they may have reduced resistance to ...
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Leak Rate Evaluation For Through-Wall Cracks
... LRCPC also uses net-section plastic collapse criterion to calculate crack opening displacemem of the circumferential through wall crack under simple tension, pure bend[r] ...
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The impact of water on CO2 leak rate measurements for CCS projects
... This has implications for leak monitoring approaches, including how tracers may be used to quantify the leak rates and fate of CO2 in aqueous environments.. Keywords: tracer; leakage; ma[r] ...
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Code development for integrity assessment with respect to new German safety standard
... of leak and break probabilities as well as to calculate leak rates for leak-before- break ...factors, leak areas and leak rates are ...crack-like leak near the drainage pipe of a ...
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Review of Nuclear Power Reactor Coolant System Leakage Events and Leak Detection Requirements
... and leak rate in the ...with leak rate for various types of crack configurations in RCS ...leakage rate, and resulting actions from RCS leaks discovered in ...a leak occurs were ...
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Application of Leak Before Break Assessment for Pressure Tube in Case of Delayed Hydride Cracking
... The Leak-Before-Break (LBB) concept is associated with the nuclear power plant design principles as regards pipe failures and their safety ...this leak during definite time can be detected by leak ...
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Measuring Deformations in a CANDU 6 Concrete Containment Structure
... It is concluded that monitoring of deformations occurring in concrete containment structures during the leak-rate pressure tests as well as continuously over the perio[r] ...
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An Investigation on Weldability of Flared D9 Tube to Cylindrical SS316L (N) Plug Using Electro Magnetic Compression Welding
... EM welding of tapered D9 tube to SS316 L (N) plug was successfully achieved using six turn tapered disc type EMW coil. Ten consecutive welded samples were generated by coil current ranging from 233 to 250 kA at around ...
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Activation of potassium channels contributes to hypoxic injury in proximal tubules
... The mechanisms responsible for the loss of cell potassium during renal ischemia are poorly understood. The present studies examined the hypothesis that potassium channels are activated as an early response to hypoxia and ...
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Mitochondrial proton leak compensates for reduced oxidative power during frequent hypothermic events in a protoendothermic mammal, Echinops telfairi
... the cellular basis supporting this unique pattern is not well-understood. The bioenergetics of liver mitochondria are well-established nominators of (basal) metabolic rates (Porter and Brand, 1995; Polymeropoulos et al., ...
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Quantitative risk assessment of fuel preparation room having high-pressure fuel gas supply system for LNG fuelled ship
... minimum leak rate which can lead to the fuel-air mixture equivalent to the LEL for the given size of the room and the ventilation devices was identified through a simple ventilation simulation (see Appendix ...
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Leak Tests at Real Bolted Flange Joints - Verification of Gasket Characteristics Determined with Standardized Test Procedures
... lower than the test results determined with standardized test procedures prescribe. Or wise versa at the same gasket load in the assembly stage the leak rate at real bolted flange [r] ...
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IoT leak detection system for building hydronic pipes
... One of the monitoring system’s purpose is to identify the state of the flow. Many ways of acknowledging the flow has been researched and invented, one of them is vibration sensor [13]. Cracks in the operating pipe, ...
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Leakage discharge separation in multi-leaks pipe networks based on improved Independent Component Analysis with Reference (ICA-R) algorithm
... The existing leakage assessment methods are not accurate and timely, making it difficult to meet the needs of water companies. In this paper, a methodology based on Independent Component Analysis with Reference (ICA-R) ...
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