Date: Novem Time: 04:00 AM Location: Frigg Gas Field Semi-submersible Closed Diving Bell2 offshore drilling rig Operated by Dolphin. Photo credit: Byford Dolphin in Dry Dock by Josef Pavlik CC-SA 3.0. Five crew died and a sixth was seriously injured. Denis Su-Feher PhD Student, Chemical Engineering Mary Kay O’Connor Process Safety Center Outline. A drilling rig, the Byford Dolphin, had an accident in 1983. One of their assistants was also fatally wounded. The accident was human error, with some technical factors: Yes, the operator deliberately relaesed the clamp which held the diving bell in place while the. Case Study: Lessons Learned from Explosive Decompression at Byford Dolphin. The Byford Dolphin disaster shook the commercial diving community to its core, prompting increased attention to safety precautions to prevent any further tragedies like the one that befell. On November 5th, 1983, 4 saturation divers instantly died following a massive explosion while working on an offshore drilling rig. In 1983, a horrific catastrophe occurred on the Norwegian-operated oil rig Byford Dolphin, taking the lives of four saturation divers and one crew member. This week I cover a highly-requested topic: the Byford Dolphin explosive decompression accident.
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