Offshore Drilling Safety Agency Updates Report on Fastener Failures

The Bureau of Safety and Environmental Enforcement has published an update to its 2014 technical review regarding fastener failures in offshore drilling. The agency said more research is necessary to prevent fastener failures going forward. It noted at least three incidents since 2003 in which nuts and bolts securing a drilling riser failed, prompting the riser to separate from the assembly. The organization said items to study included fastener material properties, coatings and environmental conditions. “The failure of subsea fasteners due to environmentally-assisted corrosion continues to affect offshore safety and environmental protection,” BSEE said in its report.