Experimental study of fibrous debris head loss through sump strainer

Saya Lee, Suhaeb Abdulsattar, Rodolfo Vaghetto, Yassin A. Hassan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


In a Loss of Coolant Accident (LOCA), fibrous debris produced during the blowdown phase is transported into the sump and becomes an important cause of head loss through the sump strainer affecting the Emergency Core Cooling System (ECCS) performance. In this study, a vertically installed strainer in horizontal flow loop system was designed to generate fibrous beds on the sump strainer and measure the head loss. Fifteen cases with different approaching velocities and quantities of debris were chosen based on the Double-Ended Guillotine (DEG) accident, 31 "pipe break, and RELAP5-3D simulation of a typical 4-loop Pressurized Water Reactor (PWR) to simulate several sizes of LOCA. NUKON fibrous insulation was used as the fibrous debris using Single shredded by commercial leaf shredder used in NUREG/CR-6224 report and Nuclear Energy Institute (NEI) debris preparation protocol. The experimental head loss results were compared to the head loss model in NUREG/CR-6224 report, and issues of porosity and bed thickness were found. For the vertically installed strainer, which has non-uniform debris bed thickness and less porosity than horizontally deposited beds, a modified head loss correlation is suggested. Also, two results from the NEI preparation were compared with the single shredded fibers.

Original languageEnglish (US)
Title of host publicationAdvances in Thermal Hydraulics 2012, ATH 2012
Number of pages5
StatePublished - 2012
EventAdvances in Thermal Hydraulics 2012, ATH 2012 - San Diego, CA, United States
Duration: Nov 11 2012Nov 15 2012

Publication series

NameAdvances in Thermal Hydraulics 2012, ATH 2012


ConferenceAdvances in Thermal Hydraulics 2012, ATH 2012
Country/TerritoryUnited States
CitySan Diego, CA

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology


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