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Shells (structural forms)

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c0048808
EISBN: 978-1-62708-228-0
...Abstract Abstract The welds joining the liner and shell of a fluid catalytic cracking unit failed. The shell was made of ASTM A515 carbon steel welded with E7018 filler metal. The liner was made of type 405 stainless steel and was plug welded to the shell using ER309 and ER310 stainless steel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0048795
EISBN: 978-1-62708-220-4
...Abstract Abstract A large pressure vessel designed for use in an ammonia plant failed during hydrostatic testing. It was fabricated from ten Mn-Cr-Ni-Mo-V steel plates which were rolled and welded to form ten cylindrical shell sections and three forgings of similar composition. The fracture...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001050
EISBN: 978-1-62708-214-3
... the shell. An ultrasonic examination of all Yankee dryers of the same type was recommended to look for cracking at the edge of the shell. Modification of the head-to-shell joint was recommended as well. Bolted joints Shells (structural forms) Class 60 Corrosion fatigue Background Visual...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c0047529
EISBN: 978-1-62708-230-3
... of the undercut, which was an inherent stress raiser. Recommendations included revised joint design to ensure full root penetration. Fillet welds Heat affected zone Joint design Papermaking Shells (structural forms) Steam preheaters Weld defects Welded steel (Steel, general) Joining-related failures...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001401
EISBN: 978-1-62708-220-4
... Rivets Shells (structural forms) Sodium chloride Stress relieving 18-8 Stress-corrosion cracking Following disruption of the basket of a hydro-extractor used for the separation of crystals of salt (sodium chloride) from glycerine, samples of the broken parts were submitted to the Company...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001395
EISBN: 978-1-62708-220-4
... worked structure is unstable and when activated by the appropriate temperature, could promote the intergranular precipitation of chromium carbides. The shell material was only rolled into cylindrical form and the amount of cold work would be very small by comparison with that introduced during the cold...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
... in.). It was fabricated from ten manganese-chromium-nickel-molybdenum-vanadium steel plates 150 mm (5 7 8 in.) thick, which were rolled and welded to form ten cylindrical shell sections and three forgings of similar composition. The forgings formed two end closures and a flange for attaching one of the forged...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001063
EISBN: 978-1-62708-214-3
... deep pit marks on the shell side, while the top tube sheet was free from any form of corrosion. The baffle plates and the tie rods were completely corroded and practically disintegrated. Similarly, the shell, also of carbon steel, showed heavy corrosion on the inside, with a very rough nonunifonn...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... of the vessel, forming the shell of the heat exchanger. The designer had not provided for complete filling of the water space between the upper tube sheet and the partition head. As a result, the type 316 stainless steel shell of the exchanger was constantly wetted with water in the vapor space below...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001420
EISBN: 978-1-62708-220-4
...-Cr-Mo steel shell and two end plates. It was designed to spin at 2200 rpm, using centrifugal force to expel liquids through nearly 3000 drilled holes in the shell wall. Investigators found that the shell separated completely from the bottom plate. The top plate, though it cracked radially, remained...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003526
EISBN: 978-1-62708-180-1
... (bottom right) Fig. 3 Example of a statically indeterminate structure. Unlike the simple cantilever in Fig. 2 , there is no closed formed solution in classical beam theory for a supported cantilever as shown in (a) for deflection of a beam (top left) or a notched beam (top right). Results from...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c9001393
EISBN: 978-1-62708-230-3
... that gives rise to this form of deterioration. It is well known by the name of “grooving” in this country and is often found in shell type boilers in such localities as the junctions of furnace rings and front end plates. In addition to the fissure that initiated the rupture in the vessel, similar...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001713
EISBN: 978-1-62708-220-4
... Inspection of the Blender Inspection of Interior Shell Vacuum Tube Assembly The stainless steel shell of the blender was structurally sound and had very little damage. We found no evidence that the shell was breached prior to the accident or that the chemical reactions initiated at the surface...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006773
EISBN: 978-1-62708-295-2
... experiences. It may also include numerous analytical, classical, and computer techniques that are available to assist in a structural design failure analysis. A traditional closed-form analytical technique, such as beam analysis or plate theory, provides a simple and quick way to estimate stresses...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c0089716
EISBN: 978-1-62708-231-0
... that the hard spots had been rapidly cooled, but why they formed was not ascertained. The presence of these hard spots indicated that the assembly had not been adequately stress relieved after structural modifications that involved welding in the region of the sill and shell attachment. The shell plate met...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048777
EISBN: 978-1-62708-229-7
...Abstract Abstract A 150 cm ID boiler drum made form ASTM A515, grade 70, steel failed during final hydrotesting at a pressure of approximately 26 MPa. Brittle fractures were revealed in between two SA-106C nozzles and remainder was found to involve tearing. Short, flat segments of fracture area...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001814
EISBN: 978-1-62708-241-9
... the stress rupture voids near the outside surface. Microstructural assessment of the shell wall indicated the degeneration of the typical microstructure phase pearlite and in some locations the formation of spheroidized cementite. Figure 25 shows the pearlite and ferrite structure from a location that did...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001068
EISBN: 978-1-62708-214-3
...; inside surfaces showed the presence of crevices formed because of weld spatter, excess penetration, and, in one tank, a gap between a reinforcement ring and the shell surface. Service water with a high chloride content had been used for hydrostatic testing but had not been drained from three tanks...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001570
EISBN: 978-1-62708-220-4
... the exchanger tubes to impose load on seal welds and the shell side cooling water entered the crevice between the tubesheet and the tubes. The cooling water in the crevice caused galvanic reaction and embrittlement of seal welds. Brittle crack opening and crack propagation in seal welds occurred due...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001852
EISBN: 978-1-62708-241-9
... three directions; ( b ) fixing connecting holes in out of plane (Y) direction only Thermal Shell-131 and Structural Shell-181 have been employed for nonlinear thermo-structural transient analysis using the ANSYS™ [ 11 ] commercial FEA code. Shell-131 is one of the ANSYS™ elements which is a 3D...