  The multi-purpose INTEGRAL mission is continuously contributing to Gamma Ray
Burst (GRB) science, thanks to the performances of its two main instruments,
IBIS and SPI, operating in the hard X-ray/soft gamma-ray domain. We investigate
the possibilities offered to the study of GRBs by PICsIT, the high-energy
detector of the IBIS instrument. We searched for transient episodes in the
PICsIT light curves archive from May 2006 to August 2009, using stringent
criteria optimized for the detection of long events. In the time interval under
examination PICsIT provides an energy coverage from 208 to 2600 keV, resolved
in eight energy channels, combined with a fine time resolution of 16 ms. PICsIT
successfully observes GRBs in the 260-2600 keV energy range with an incoming
direction spread over half the sky for the brightest events. We compiled a list
of 39 bursts, most of which are confirmed GRBs or simultaneous to triggers from
other satellites/instruments. We produced light curves with a time sampling
down to 0.25 s in three energy intervals for all events. Because an adequate
response matrix is not yet available for the PICsIT burst sample, we obtained a
calibration coefficient in three selected energy bands by comparing
instrumental counts with physical fluences inferred from observations with
different satellites. The good time resolution provided by the PICsIT data
allows a spectral variability study of our sample through the hardness ratio.
