We report on operational experience with an experimental performance o
f the SLD barrel Cherenkov Ring Imaging Detector from the 1992 and 199
3 physics runs. The liquid (C6F14) and gas (C5F12) radiator recirculat
ion systems have performed well, and the drift gas supply system has o
perated successfully with TMAE for three years. Cherenkov rings have b
een observed from both the liquid and gas radiators. The number and an
gular resolution of Cherenkov photons have been measured, and found to
be close to design specifications.