Abstract: At approximately 1:30 p.m. on November 16, 2001, Employee #1, a 21-year-old male, with Parsons Energy & Chemical Group Inc, that operates cogeneration facilities for UCLA. Employee #1 was in the facility where waste heat from boilers is harnessed to generate electrical power. Employee #1 was restarting a stand-by/waste heat boiler; the boiler did not fire the first time it was started, so Employee #1 made a second attempt to fire the boiler, which triggered an explosion in the forced draft fan area (which feeds fresh air and by-pass flue gas.) Employee #1 sustained cuts and a first degree burn on his face. It is suspected that the purging of unused gasses may not have been complete and unused gasses may have been by-passed back to the system causing the explosion at the fan.