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Results of the mid-term assessment of the "high performance light water reactor phase 2" project
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2009 (English)In: International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009, Atomic Energy Society of Japan , 2009, 501-511 p.Conference paper (Refereed)
Abstract [en]

The High Performance Light Water Reactor (HPLWR) is a Light Water Reactor (LWR) operating at supercritical pressure (p>22.1 MPa). In Europe, investigations on the HPLWR have been integrated into a joint research project, called High Performance Light Water Reactor Phase 2 (HPLWR Phase 2), which is co-funded by the European Commission. Within the second year of the project, the design of the reactor core, the pressure vessel and its internals have been analysed in detail by means of advanced codes and methods. The mechanical design has been assessed and shows that stresses inside components and possible deformations keep within acceptable limits. The neutronics and the flow inside the core have been investigated. The addition of a water layer in the reflector helps to flatten the radial power profile. The moderator flow path must be changed because of possible reverse flow in the gaps between the assemblies (downward flow). First calculations of transients showed an acceptable behaviour of the cladding temperatures. Material oxidation experiments were successfully performed. The auxiliary loop of the Supercritical Water Loop has been constructed. Heat transfer has been investigated numerically analysing heat transfer deterioration (HTD) and flow around fuel pins with wire wrap spacers.

Place, publisher, year, edition, pages
Atomic Energy Society of Japan , 2009. 501-511 p.
Keyword [en]
Design, Heat transfer, Nuclear power plants, Pressure vessel codes, Stresses, Cladding temperatures, European Commission, Heat transfer deterioration, High-performance light water reactors, Light water reactor (LWR), Radial power profile, Super-critical pressures, Supercritical water, Light water reactors
National Category
Energy Engineering
URN: urn:nbn:se:kth:diva-164529ScopusID: 2-s2.0-84907993501ISBN: 9781617386084OAI: diva2:806292
International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009, Shinjuku, Tokyo, Japan, 10 May 2009 through 14 May 2009

QC 20150420

Available from: 2015-04-20 Created: 2015-04-17 Last updated: 2015-04-20Bibliographically approved

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