This chapter describes the new Safety and Environmental Management Systems (SEMS) regulation in detail (requirements of the original SEMS and the later SEMS II have been merged into one system). The chapter starts with a discussion of the API RP 75 standard, detailing its background and scope, and showing how RP 75 (SEMP) developed into SEMS. The elements of both SEMS and SEMS II are described in depth, along with a full listing of BSEE requirements for each of these elements. Detailed guidance is provided, particularly regarding hazards analysis, auditing and the Stop Work authority