The report listed a cascading series of mistakes from May 6, 2021, when operator error caused a pipe to rupture and 21,000 gallons of fuel to spill when fuel was being transferred between tanks. The fuel spilled into a fire suppression line, sat there for six months and then spilled again when a cart rammed into it on Nov. 20.
Article source: https://www.huffpost.com/entry/hawaii-water-navy-investigation-pearl-harbor_n_62be662fe4b00a9334e617ec