1.3 The Safety Case Permissioning System 1.3.1 Overview The Act establishes a permissioning system for certain petroleum activities that are classed as designated petroleum activities. A petroleum undertaking shall not carry on a designated petroleum activity (other than an established petroleum activity) unless a) It has submitted a safety case to the CER; b) The CER has approved the safety case and c) A safety permit has been issued in respect of the designated petroleum activity. 11 A petroleum undertaking carrying on an established petroleum activity must also submit a safety case to the CER within the time period specified in the Act The CER may only issue a safety permit in respect of a designated petroleum activity where it has approved a safety case submitted in respect of that activity. Responsibility for safety rests with each petroleum undertaking and each petroleum undertaking must satisfy itself as to the adequacy and implementation of measures to reduce risks to safety to the levels required by the Act this must be demonstrated within its safety case. Approval of a safety case by the CER and the issuing of a safety permit shall not be interpreted as relieving a petroleum undertaking of its duties under the Act. 1.3.2