Chemicals are routinely monitored in the tank farms. When a Personal Ammonia Monitor alarm occurs, the TF-AOP-015 procedure is initiated.
An AOP-015 is Abnormal Operating Procedure #015 (this is an example of the This is the AOP-015 procedure from Dec. 2017. Procedures are updated regularly as part of the continuous improvement process, this procedure may not reflect the current operating procedure).
In the event of an AOP-015, the affected area is evacuated and employees are moved upwind. Other workers in adjacent areas are notified. Access to the area is restricted. Industrial hygiene technicians monitor vapors in the farm. Employees who exhibit symptoms receive an evaluation at the onsite medical provider. Medical evaluation is also offered to employees working in the area who don’t have symptoms.