Pre-Start Up Safety Review
A PSSR is a safety review conducted prior to commissioning of a plant to ensure that the plant meets the requirements of safety as specified in the operating or design document. A PSSR must also be conducted if there is a modification in the original design or there is any introduction of new chemicals in the process or the plant is re-starting after being under shutdown for more than one week. A PSSR not only cover equipment and processes but also training.