Document Safety Alert 391 - Improper Use of Equipment Results in Shock Loaded Crane and Damaged Tension Packer (747.46 KB) Issued Date Thursday, September 17, 2020 - 5:00am Wednesday, January 1, 2020 - 12:00pm Date for required review Thursday, September 17, 2020 - 12:00pm Safety Alert/Bulletin Number 391 Safety Category Component Failures Cranes/Lifting