Work platform for blowout preventer stacks

Details Work platform for blowout preventer stacks Work platform for blowout preventer stacks

2005-02-01

2005-02-01

Thompson, II, Hugh B. (Department: 3634)

Fire escape, ladder, or scaffold

Scaffold supported internally on shaft

C182S113000

Reexamination Certificate

active

06848539

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.

REFERENCES:
patent: 335164 (1886-02-01), Vitalis
patent: 1070910 (1913-08-01), Nichols
patent: 2066984 (1937-01-01), Lamb
patent: 3193974 (1965-07-01), Nelson et al.
patent: 4407392 (1983-10-01), Lazzari
patent: 5203410 (1993-04-01), Cobb et al.
patent: 5653418 (1997-08-01), Olson

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