For those who believe entering a PRCS would not happen when the Oxygen level is measured at 19.5% (IDLH for O2 Deficiency)…
November 22, 2022, @ 1:00 p.m., an employee from a local chemical company was cleaning the inside of a tanker trailer. The employee was required to enter the tank and wash out the tank with soap and water. Before entry, the oxygen level in the tank was 19.5%. The employee entered the tank and began his cleaning process. An attendant monitored the employee in the tanker but briefly stepped away to get another coworker to replace him.
