60 dia. Double Hinged Refractory Lined Expansion Joint for a Chemical Refinery in Michigan
U.S. Bellows, Inc. specially designed and manufactured a double hinged refractory lined expansion joint for a chemical refinery in Michigan. This expansion joint with an overall length of 40′-0″ has a 4″ thick refractory lining installed per UOP specifications. It also consists of testable two plies SB-443/Inco 625LCF bellows, 5/8″ thick, A516-70 mitered elbows, 5/8″ thick, A516-70 spool, A240-304 liners, A516-70 hinges, A193, GR 7 tie rods, and A516-70 lugs.
This expansion joint is designed for 50 PSIG and 1440°F with 3″ of lateral movement per B31.3 and EJMA standards. To ensure quality, 100% X-Ray and 100% dye-penetration tests were performed on the bellows after forming. A pneumatic test at 75 PSIG was conducted on the expansion joint assembly prior to shipping.
Clam Shell Bellows for a Shell and Tube Heat Exchanger
U.S. Bellows, Inc fabricated and installed a clam shell bellows for a shell and tube heat exchanger. The clam shell bellows is designed and fabricated per ASME VIII Div. 1 appendix 26. It has a 14″ diameter and was designed at 150ºF and 150 psig. In order to detect any leaks, prior to and following forming, the heat exchanger and its welds were subjected to a series of tests such as the dye penetrant test (100%), X-ray test (100%) and air test.
These joints are designed at 150 PSIG and 450ºF to allow lateral and axial movements in a 42″ steam line. Expansion joints were designed and fabricated per EJMA and B31.1 code. The expansion joints were hydro-tested at 225 PSIG and 75ºF. In order to detect any leaks in the weld, prior to and following forming, bellows long seam welds and attachment welds were 100% dye-penetrant tested.
Three-day Emergency Fabrication of a 40" I.D., Clamshell Expansion Joint for a Chemical Plant in Texas
Within a three day span, U.S. Bellows, Inc., the expansion joint division of Piping Technology & Products, Inc., fabricated a 40 I.D., single coded, clamshell expansion joint for a chemical plant in Beaumont, Texas. The chemical company utilized U.S. Bellows’ 24 x 7 Quick Turn/Emergency service.
Quality Control Performing Dye Penetrant Test
After the representative from the chemical plant completed the online form, the U.S Bellows’ on-call team was immediately paged. Three days later the bellow had been successfully fabricated, welded to an A516-70 heat exchanger shell and shipped to the chemical plant to resume operation. The bellow was fabricated from A240 tp 321SS and designed at 50 PSIG and 750oF. In order to detect any leaks in the weld, the bellow’s long seam weld was 100% x-rayed and its attachment weld was 100% dye-penetrant.
Elbow Tied Universal Expansion Joints For A Power Station In Florida
U.S. Bellows, Inc., the expansion joint division of Piping Technology & Products, Inc., designed and manufactured 16-inch and 30-inch elbow tied universal expansion joints, for a power station in Florida. These expansion joints, which are used to transport hot steam, are designed at 150 psig and 350° F. The bellows material is fabricated from Inco 625 and elbows and spool from carbon steel.
In October 1999, U.S. Bellow, Inc., the expansion joint subsidiary of Piping Technology & Products, Inc., fabricated three expansion joints for an E&C company in Singapore. The expansion joints manufactured included one 36″ single hinged expansion joint, one 36″ double hinged expansion joint and one 36″ double gimbal expansion joint. These expansion joints will be used at a compressor in Singapore. Due to the critical applications of these expansion joints, they were tested per ASME Sect. VIII Div. 1 Appendix 26. The bellows together with the hinge assembly were hydro-tested. Additionally, a dry nitrogen test between the two plies was conducted to ensure that each of the two plies would withstand the design pressure. Gimbal expansion joints allow for restrained angular movement of attached piping in two planes. Expansion joints, in general, allow for axial, lateral, angular and torsional movement in piping systems.
The 24” diameter hinged expansion joint shown above was designed to absorb lateral deflection and limited angular rotation in one plane only. They were supplied by U.S. Bellows, Inc. for an emergency shut down delivery requirement.