What are the changes in code in MODU CODE 1979 and 1989?

The MODU Code (Mobile Offshore Drilling Units Code) was revised in 1989 to enhance safety and operational standards for mobile offshore drilling units. Key changes included more stringent structural integrity requirements, improved stability criteria, and updated safety measures for fire protection and emergency evacuation systems. The 1989 revision also emphasized the need for more comprehensive risk assessments and introduced guidelines for environmental protection during drilling operations. These updates aimed to address the evolving challenges and risks associated with offshore drilling activities.