초록 ▼

Improvements in a system for escaping from an offshore drilling or production platform in an emergency situation which includes a stable floating structure forming a safe haven anchored near but at a safe distance from the platform, an aerial cableway extending between the platform and the haven, an

Improvements in a system for escaping from an offshore drilling or production platform in an emergency situation which includes a stable floating structure forming a safe haven anchored near but at a safe distance from the platform, an aerial cableway extending between the platform and the haven, and a personnel carrier movable along the cableway. The principal improvement is that the haven is a semi-submersible structure for increased stability.

대표청구항 ▼

In a system for escaping from an offshore drilling or production platform, or the like, in emergency situations which includes an offshore platform in operative position substantially fixed relative to the marine bottom at an offshore location for engaging in hazardous operations involving combustib

In a system for escaping from an offshore drilling or production platform, or the like, in emergency situations which includes an offshore platform in operative position substantially fixed relative to the marine bottom at an offshore location for engaging in hazardous operations involving combustible and explosive fluids entrapped in the marine bottom, a floating haven fixedly anchored near but at a safe distance from the platform, at least one cableway unsupported between its ends attached to and extending above water between the platform and the haven with the cableway inclining downwardly from the platform to the haven, and a personnel carrier suspended from and movable along the cableway for transferring personnel from the platform to the haven, the improvement wherein the haven comprises: at least one upright buoyant cylinder; means for ballasting and deballasting said cylinder; means defining an enlarged watertight compartment mounted to the upper end of said cylinder with the top of said compartment forming a weather deck, said cylinder and said compartment-defining means together forming a structure ballastable to float with said compartment partly submerged for increased stability.