Influence of the distribution of noncondensibles on passive containment condenser performance in PANDA

Bandurski, Th.; Huggenberger, M.; Dreier, J.; Aubert, C.; Pütz, Franz; Gamble, Robert E.; Yadigaroglu, G.

doi:10.1016/s0029-5493(00)00317-4

Cited by 14 publications

(2 citation statements)

References 2 publications

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“…The steam generated in the RPV is transferred into the DW and from there to the PCC where a part condenses and returns into the RPV and a part is vented to the WW pool where it condenses. During this initial phase, the air present in the DW and PCC tubes is vented into the wetwell (WW) [15], so all the active tube length (red in Figure 3) is available for heat transfer, leading to the steam condensation. As the transient continue, further and the decay heat decreases, the PCCs have an overcapacity and the pressure in the DW decreases below the WW pressure.…”

Section: Control Systemmentioning

confidence: 99%

PANDA: A Multipurpose Integral Test Facility for LWR Safety Investigations

Paladino

Dreier

2012

Science and Technology of Nuclear Installations

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The PANDA facility is a large scale, multicompartmental thermal hydraulic facility suited for investigations related to the safety of current and advanced LWRs. The facility is multipurpose, and the applications cover integral containment response tests, component tests, primary system tests, and separate effect tests. Experimental investigations carried on in the PANDA facility have been embedded in international projects, most of which under the auspices of the EU and OECD and with the support of a large number of organizations (regulatory bodies, technical dupport organizations, national laboratories, electric utilities, industries) worldwide. The paper provides an overview of the research programs performed in the PANDA facility in relation to BWR containment systems and those planned for PWR containment systems.

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Section: Control Systemmentioning

confidence: 99%

PANDA: A Multipurpose Integral Test Facility for LWR Safety Investigations

Paladino

Dreier

2012

Science and Technology of Nuclear Installations

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“…Pressure time behaviour defines thus the response of the whole system to the specific transient. As far as condensation issues are concerned, PANDA facility was very useful for investigating the degradation of HTC (and then the influence on the effective condensing length) in presence of non-condensable gases [34], both heavier than steam, initially filling the containment compartments (nitrogen or air), and lighter than steam, released later in the course of the transient from the reactor core (hydrogen, simulated by helium). The provided tests permitted moreover to extend the database available for containment analysis code qualification.…”

Section: Short Review On Experimental Facilitiesmentioning

confidence: 99%

Modelling of Heat Transfer Phenomena for Vertical and Horizontal Configurations of In-Pool Condensers and Comparison with Experimental Findings

Papini

Cammi

2010

Science and Technology of Nuclear Installations

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Decay Heat Removal (DHR) is a fundamental safety function which is often accomplished in the advanced LWRs relying on natural phenomena. A typical passive DHR system is the two-phase flow, natural circulation, closed loop system, where heat is removed by means of a steam generator or heat exchanger, a condenser, and a pool. Different condenser tube arrangements have been developed for applications to the next generation NPPs. The two most used configurations, namely, horizontal and vertical tube condensers, are thoroughly investigated in this paper. Several thermal-hydraulic features were explored, being the analysis mainly devoted to the description of the best-estimate correlations and models for heat transfer coefficient prediction. In spite of a more critical behaviour concerning thermal expansion issues, vertical tube condensers offer remarkably better thermal-hydraulic performances. An experimental validation of the vertical tube correlations is provided by PERSEO facility (SIET labs, Piacenza), showing a fairly good agreement.

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