Even though an effective Safety Management System is a proactive approach that seeks to prevent or mitigate the occurrence of accidents, injuries and incidences, yet the best of Safety Management Systems according to the Government of Alberta (2010) is said to lack a guarantee against certain natural disasters like earthquake and explosions which can spell grave consequences on operational safety, thus the need to incorporate a well thought-out Emergency Response Plan (ERP) into the overall Safety system. Three key elements were identified and measured.