Work platform for blowout preventer stacks
US6848539B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2001 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | Aug 28, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
For the safety and convenience of personnel working on upper portions of a blowout preventer stack (10), a work platform (25) is supported at the midheight of the stack. The platform has a main support structure (26) which is affixable to central connection flanges in the stack. Auxiliary support members (33) are releasably affixable to arms (27) of the main structure, and to them are releasably affixable separate personnel support deck units (38). Guard rails (42) can be connected to the deck units. The platform is modular for easy mounting and demounting to the stack. The platform's main support structure (26) can be a long term element of the stack if desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.