Lessons Learned

A small fire broke out in a laboratory in the Department of Physics when a service technician plugged a heat gun into a power strip that was plugged into an isolation transformer. When a transformer is overloaded, the transformer can experience high operating temperatures, causing it to overheat. In this case, the overheated transformer caused a small fire to break out.

Fortunately, there were no injuries and damage was very minimal. The service technician notified the lab manager as soon as they noticed smoke. The Lab Manager...

A researcher walking towards an optical table was exposed to a laser beam that reflected off a hex ball driver tool. Another researcher at a nearby bench was installing an optical component on a breadboard when the hex ball driver he was using inadvertently moved into an active beam path. The hex ball tool had a reflective surface.

The following lessons learned reports detail what went wrong and what corrective actions have been taken or will take place to address the incidents.

Using dry Dimethyl Sulfoxide (DMSO) as solvent, a reaction between an organic macrocycle and bromoethane was placed in a round bottom pressure vessel. The reaction was heated using armor aluminum beads in a stainless steel bowl sitting atop a hotplate. The setup was briefly left unattended inside a fume hood with the sash closed.

Without a means for temperature control, the hotplate generated excess heat, which in turn produced excess pressure. Overpressurization caused the round bottom vessel to shatter. Glass shards along with the aluminum heating beads...