Dozens of surgeries were postponed Monday at Vermont’s largest hospital because of weekend flooding caused by a burst pipe. A dozen of UVM Medical Center’s 22 operating rooms remained out of commission on Monday, forcing nearly 50 surgeries to be delayed, the hospital said in a statement. It will take about a week for repairs to be made to bring the remaining operating rooms back online, the hospital said. Until then, surgical teams will be reviewing schedules and rescheduling elective surgeries on a case-by-case basis. The pipe burst Saturday night. Workers scrambled to move sensitive equipment to avoid damage, and only two functioning operating rooms were available for emergencies on Sunday.