An embodiment of invention directed to prototype fire-escape models of off-shore rigs with an emphasis on a Detachable Island Rig (DIR), said DIR reversibly locked to a roof platform of an under water basement is being mobilized by a ‘steering crew’ to be salvaged upon a rig fire, wherein the under water basement serving as a fire-escape for the remaining crew is ‘water-sealed’ upon a rig fire, the fire-escape scheme of the DIR and the off-shore rigs having the below set forth means and methods:
- (a) provision to instantly lock/unlock by a locking device to be disengaging from or engaging with a completely submerged permanent base structure comprising an underwater basement and an overlying basement roof platform, wherein upon disengaging, the partially submerged DIR separating from the roof platform and adjacent stationary-rig structures of:
- (1) a conduction platform with an appended segment equipped for immediate operations;
- (2) a fire-station;
- (3) a ‘general-purpose’ basement entry structure away from the conduction platform;
- and (4) an intervening stretch of fire-proof corridor conjoining the DIR and the conduction platform, wherein traversing metal tubes and electric wires of the fire-proof corridor are being instantly disconnected for disengaging the DIR, as watertight doors of both the corridor and the DIR are shut, and a short watertight walkway between both is being disconnected,
- (b) the DIR with a working platform sufficiently high to be untouched by rising tides, has in its overall structuring:
- provisions for restoring immediate functions of the conduction platform, tall and hefty equipment, working quarters and working devices, optional living quarters, boat stands, a ‘fire-escape’ entry structure about a spray-room with encompassing accessory provisions, a security monitoring and response station, a metal bottom of air capsule imparting reversible buoyancy to the DIR, a bridging structure to a general purpose basement entry, the standard rig equipment known to the industry, and at the farthest end from the fire-proof corridor, a steering station having powerful engine to smooth steer the DIR in an automated straight course following a remote signal by the crew,
- (c) the DIR having its own fire-station and crew of fire-fighters, as in the stationary rig of the permanent base structure,
- (d) the DIR incorporating locking devices about two sides, said locking devices designed to be allowing room for imprecision and operable by a remote control, the latter having a common button to each side in addition to locking an individual device,
- (e) the metal tubing passing through the stretch of the fire proof corridor conforming to a short segments of rubber tubing having an U or C configuration at the junction of the fire proof corridor and the DIR, to instantly disconnect, for the DIR to be disengaged,
- (f) the DIR having projectile omni-directional wheels facilitating a precise positioning about the base platform,
- (g) while stationing back onto the base structure built to stay submerged, the buoyant DIR is pulled down by cog-wheel motion of motors moving ropes of multiple double pulleys about the basement, the ropes passing through erected ‘roof tubulars’ structured to surpass surface waters, the buoyancy of the DIR mostly overcome by water filling the DIR's bottom metal block of air capsule,
- (h) the DIR and the off-shore rigs having room to store large sheets/rolls of burlaps in a roof structure, to be made wet and thrown on burning mechanical devices, said mechanical devices covered by burlaps and fire-resistant jackets with a water-proof underlay,
- (i) the off-shore rig having wheeled life-boats and lift-boats stationed about a deck to be lowered into the ocean waters in an event the rig catching fire that cannot be contained,
- (j) the DIR and the off shore rigs having additional novel provisions of safe-guarding unprotected interiors and exteriors of the rigs against gas-fueled fire,
- (k) the DIR and the off shore rigs having additional provision of multiple ‘exiting slide tubulars’ as fire-escape models from remote and upper level work stations,
- (l) the DIR having a device of general purpose entry to the basement, said entry houding ‘water-sealed’ upon a rig-fire,
- (m) the DIR and the off-shore rigs having a spray-room with converging spray-walks, or spray-tracks with track drives, or else simpler spray-drives, either device set forth to be conforming to old or new rigs, or rigs with no availing space, and
- (n) the DIR's ‘in-situ’ prototype fire-escape about the basement entry, by a devised ‘water-seal’ upon a rig-fire, serving as a schematic of a ‘water-seal’ for an ‘in-site’ fire-escape modular devised for a conventional jack-up right with an ‘air-gap’, and no provisions for a built-in under-water basement.