On August 17, 2017, the first gravitational wave signal from a binary neutron star inspiral(GW170817) was detected by Advanced LIGO and Advanced VIRGO. Here we presentradioactiveβ-decay rates of three independent sources44Ti,60Co and137Cs, monitoredduring the same period by a precision experiment designed to investigate the decay oflong-lived radioactive sources. We do not find any significant correlations between decayrates in a 5 h time interval following the GW170817 observation. This contradicts aprevious claim published in this journal of an observed 2.5σPearson Correlation betweenfluctuations in the number of observed decays from twoβ-decaying isotopes (32Si and36Cl) in the same time interval. By correcting for the choice of an arbitrary time interval,we find no evidence of a correlation above 1.5σconfidence. In addition, we argue thatsuch analyses on correlations in arbitrary time intervals should always correct for theso-called Look-Elsewhere effect by quoting the global significance.