Full Content is available to subscribers

Subscribe/Learn More  >

Dresden Units 2 and 3 Isolation Condenser Waterhammer Prevention During Restart Operations

[+] Author Affiliations
John Freeman, Kevin Ramsden

Exelon Nuclear Engineering Department, Warrenville, IL

Paul Kovacs

Dresden Station Engineering Department, Warrenville, IL

Paper No. ICONE16-48808, pp. 279-287; 9 pages
  • 16th International Conference on Nuclear Engineering
  • Volume 1: Plant Operations, Maintenance, Installations and Life Cycle; Component Reliability and Materials Issues; Advanced Applications of Nuclear Technology; Codes, Standards, Licensing and Regulatory Issues
  • Orlando, Florida, USA, May 11–15, 2008
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-4814-0 | eISBN: 0-7918-3820-X
  • Copyright © 2008 by ASME


The Dresden Units 2 and 3 have a history of hydraulic transients occurring in the Isolation Condenser System piping. One of the most significant transients occurred following a spurious trip and isolation of the Isolation Condenser when operators restarted the system. Piping support damage occurred on supports in the condensate return line. A detailed RELAP5 M3 analysis of the Isolation Condenser and reactor system was performed to study the thermal hydraulic behavior of the system through system initiation and subsequently to system isolation and restart. Several post isolation restart times were analyzed to provide guidance for operating procedure changes. Isolation valve operation sequence was also considered. Piping segment force time histories in the condensate return line were generated to evaluate the pipe loadings. The loads computed compared favorably with the historical damage observed and demonstrated that allowing sufficient time for post isolation void transients to complete will allow system restart with minimal loading on the system.

Copyright © 2008 by ASME



Interactive Graphics


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

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