0

Full Content is available to subscribers

Subscribe/Learn More  >

A Thermal-Hydraulics Analysis of Pipe Breaks in the Pebble Bed Modular Reactor Main Power System

[+] Author Affiliations
Naison Mazana

Pebble Bed Modular Reactor (Pty) Ltd., Pretoria, South Africa

Paper No. ICONE16-48920, pp. 943-950; 8 pages
doi:10.1115/ICONE16-48920
From:
  • 16th International Conference on Nuclear Engineering
  • Volume 3: Thermal Hydraulics; Instrumentation and Controls
  • Orlando, Florida, USA, May 11–15, 2008
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-4816-7 | eISBN: 0-7918-3820-X
  • Copyright © 2008 by ASME

abstract

This paper presents observations from analyses of pipe breaks presumed to occur in the Pebble Bed Modular Reactor’s (PBMR’s) Main Power System (MPS), and a brief insight into the implications of evaluated shear ratio values on dust lift-off and dust deposition in the MPS. The PBMR is a multibillion rand project tasked with the design, construction, commissioning and marketing of first-of-a-kind pebble-bed, high-temperature gas-cooled nuclear technology. The main loop of the envisaged nuclear power plant comprises a single Brayton thermodynamic cycle that integrates the pebble-packed reactor to a system of heat exchangers and to a single-shaft turbine-generator-compressor system. The reactor coolant is helium which, under 9 000 kPa, exits the reactor at approximately 900 °C. This drives the downstream turbine in a direct action set-up, supplying the grid with roughly 165 MWe of electricity. The PBMR’s MPS and support systems have progressed to advanced design phases. Thermal-hydraulics analysis has played an integral role in providing input data to design and systems engineering functions. Twenty-eight critical positions around the MPS have been identified for the capture of parameters used to calculate shear ratios, which are used to estimate dust lift-off fractions that could result from the pipe break scenarios, and to predict nuclear doses likely to affect the reactor’s adjacent compartments and the immediate environment.

Copyright © 2008 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In