Indonesia is one of the countries that has so many oil reserve. In years before, Indonesia just has onshore petroleum mining. But now, oil reserve in Indonesia was being decrease. Indonesia realizes that they should make offshore petroleum mining, because there are huge amount of oil potency in deep water. Based on, Oil and Gas General Directorate of Ministrial Mineral Energy Resources that Indonesia has sign 71 contract of offshore petroleum mining. Industry of offshore petroleum mining has high risk on drilling and production activities. The risk comes from the system process and marine hazards. Marine hazards are all the risks that coming from or has potency of the marine, like atmosphere corrosive, sea situation, the weather (storm, typhoon, etc), earthquake or others natural disasters and also the risks from air and ground transportations. Besides, the example of the system process are all the risks coming from the utilities, process, how to handle the materials and also ...