3 Prescriptive Requirements The Act prescribes and the Framework implements a goal-setting safety case regime. However within this goal setting safety case regime, prescriptive requirements can be made where The hazards are well understood and there are established protective or preventive measures adopted in the industry Cost benefit analysis would not necessarily support the adoption of Good Practice or The CER recognises some advantage in having a common approach. This section sets out prescriptive requirements and safety cases must demonstrate compliance with these prescriptive requirements where relevant to their petroleum activity. This Act also allows for standards identified by National Standards Authority of Ireland to be included with the Framework and these are identified in section 3.4.