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60″ Ductwork with Spring Supports, Snubbers, a Support Cradle and a Fabric Expansion Joint for a Sulfuric Acid Plant in Texas

June 15, 2006

60” Ductwork with Spring Supports, Snubbers, a Support Cradle and a Fabric Expansion Joint
U.S. Bellows, Inc. and PT&P combined to furnish a fabric expansion joint, duct work, a spring support cradle and snubbers. US Bellows furnished a fabric expansion joint with acid resisting fabric and also a duct work measuring 34″ long and 60″ in diameter which was fabricated from ASTM A 516GR 70 carbon steel. PT&P furnished spring supports, carbon steel cradle supports, and snubbers. The expansion joint was completed within 6 weeks in time for a plant shutdown. A computerized pipe stress analysis, utilizing the Caesar II stress program, was performed to obtain the forces and moments imposed on the equipment nozzles and weights to be carried by the spring supports.
60” Ductwork with Spring Supports, Snubbers, a Support Cradle and a Fabric Expansion Joint

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Slip Type Expansion Joint for Hydrocarbon Flaring System

June 7, 2006

Slip-type Expansion Joint for Hydrocarbon Flaring System
Slip-type Expansion Joint for Hydrocarbon Flaring System

The photographs above show a special slip type expansion joint designed by the Sweco Fab Division of Piping Technology & Products, Inc. for installation in the hydrocarbon flaring system of a combination of design features and material specifications. At the top right of the picture is the inner barrel which is uniquely plated to be corrosion resistant. At the bottom right of the picture is the aluminum bronze bearing sleeve which provides strength and guidance for the inner barrel. At the left is the assembled unit shows the outer barrel which contains the six packing seals, the follower and the retaining ring. This joint is to be installed in a horizontal position in the mid span of 40 feet between guided supports. The design conditions are 12” of movements, 650oF, and 50 PSI of internal pressure.

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60″ Ductwork with Spring Supports, Snubbers, a Support Cradle and a Fabric Expansion Joint

60” Ductwork with Spring Supports, Snubbers, a Support Cradle and a Fabric Expansion Joint for a Sulfuric Acid Plant in Texas

60” Ductwork with Spring Supports, Snubbers, a Support Cradle and a Fabric Expansion Joint for a Sulfuric Acid Plant in Texas

U.S. Bellows, Inc. and PT&P combined to furnish a fabric expansion joint, duct work, a spring support cradle and snubbers. US Bellows furnished a fabric expansion joint with acid resisting fabric and also a duct work measuring 34″ long and 60″ in diameter which was fabricated from ASTM A 516GR 70 carbon steel. PT&P furnished spring supports, carbon steel cradle supports, and snubbers. The expansion joint was completed within 6 weeks in time for a plant shutdown. A computerized pipe stress analysis, utilizing the Caesar II stress program, was performed to obtain the forces and moments imposed on the equipment nozzles and weights to be carried by the spring supports.

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