Flexible Sandtraps: Final Report

Kaspar Vereide, Wolfgang Richter, Ola Haugen Havrevoll, Kiflom Betete, Usha Shrestha, Ushanth Navaratnam, Leif Lia, Gasper Mauko

Research output: Book/ReportOther reportpeer-review


The Flexible Sandtraps (FlekS) project has been a four-year research project on upgrading of existing pressurized
sandtraps in operational hydropower plants. Upgrading of existing sandtraps have several challenges compared
with construction of new sandtraps; (i) limitations imposed by the existing infrastructure and (ii) the need to
limit downtime to avoid production losses. The purpose of FlekS has thus been to develop cost-efficient solutions
that can be installed with limited downtime to retrofit existing sandtraps in operational hydropower
Original languageEnglish
PublisherNorwegian Research Centre for Hydropower Technology
Number of pages46
ISBN (Print)978-82-93602-21-7
Publication statusPublished - 2021

Publication series

NameHydroCen Report
ISSN (Print)2535-5392


  • Hydropower
  • Upgrading
  • Sandtrap
  • HYdraulic Model test

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