WELDED DECK SEAM SKIN PONTOON INTERNAL FLOATING ROOF

• Main Authors: Johnston, Timothy Kyle, King, Richard Paul, Kaminski, Michael Joseph
• Format: Patent
• Language: English
• Published: 03.05.2018
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; CLADDING OR PLATING BY SOLDERING OR WELDING; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; HANDLING THIN OR FILAMENTARY MATERIAL; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; STORING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

An internal floating roof for a storage tank includes a rim, a first plurality of girders, including a first girder, a second plurality of girders, including a second girder, a deck sheet, a first cap channel, a second cap channel, and a pontoon coupled to the first girder. The first plurality of girders extend in a first direction across the rim, wherein the first plurality of girders comprises a first girder. The second plurality of girders extend in a second direction, cross-wise to the first direction. The deck sheet is disposed on a first top surface of the first girder and a second top surface of the second girder. The first cap channel is coupled to a first top channel of the first girder. The first cap channel comprises a first foot configured to press a first edge of the deck sheet against the first top surface of the first girder. The first foot is welded to the deck sheet along a first length of the first cap channel. The second cap channel is coupled to a second top channel of the second girder, wherein the second cap channel comprises a second foot configured to press a second edge of the deck sheet against the second top surface of the second girder. The second foot is welded to the deck sheet along a second length of the second cap channel.