The Advanced Test Reactor (ATR) located at the Id[Naval Reactor Test Loop]aho National Laboratory (INL) contains six pressurized water loops used for in-pile testing. Each loop contains its own in-pile tube, pump pressurizer, purification and heat exchanger for controlling pressure temperature and chemistry conditions. For four of the loops, pumps have been running over more than 45 years exceeding by far their original service and design life. To ensure continuity in the research program conducted at the ATR, the need to replace the pumps of the existing loop has been anticipated.  In this context, the NRTL facility has been designed and built at Oregon State University. Its objectives are to test the reliability of the new designed pumps by operating them in series in a wide range of conditions and extensively monitoring all parameters associated with their operation (bearing and motor temperature, power input, vibration, head….). The NRTL facility has been operated since fall 2017 and is designed for pressure up to 2500 psi at 650F.

Image of structure (left) and correlated geometry (right)

NRTL Facility


NRTL Facility Contacts


Facility Manager

Research Faculty Guillaume Mignot

Guillaume Mignot

Assistant Professor
Senior Research Faculty
School of Nuclear Science and Engineering
Oregon State University 
Corvallis, OR 97331

Office: 541-737-3579
Guillaume.Mignot@oregonstate.edu

Principle Investigator

Wade Marcum

Wade Marcum

Senior Associate Dean and Associate Dean for Undergraduate Programs
Henry W. and Janice J. Schuette Professor in Nuclear Science
and Engineering

School of Nuclear Science and Engineering
Oregon State University
Corvallis, OR 97331

Office: 541-737-3018
Wade.Marcum@oregonstate.edu