Canada, July 31 -- Questerre Energy Corporation announced that its PX Energy oil shale processing facility in southern Brazil has been temporarily shut down for emergency corrective maintenance. This follows a critical pipe failure in the furnace that supplies heat to the main processing facility. Operations personnel initiated the shutdown promptly to limit any further impact to equipment.No injuries resulted from the incident and no damage was sustained to the main processing facility. The shutdown is currently estimated to last approximately three to four weeks. During this time, the facility will be offline, resulting in lost production and revenue for the period. The Company estimates the direct cost of the corrective work at approxima...