Round up the usual suspects.

Of the 14 scrams experienced, none was caused by operation exceeding the design parameters. Eight scrams occurred with the control rods withdrawn. … Six scrams occurred while the rods were inserted. Five were intentional to prevent accidental rod withdrawal, and one was the unintentional result of an instrument adjustment.

For your own safety and that of others, follow the suggestion in the verse: “Use country beam When roads are clear, Use traffic beam When cars are near.”

Cannot find one this girdle to invest!