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riser location

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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001114
EISBN: 978-1-62708-214-3
... Abstract An API type 2 steel clamp located on the riser of a semisubmersible drilling rig between the lower ball joint and riser blowout preventer (BOP) conductor failed after 7 years of service. Failure analysis revealed the cause of failure to be the low toughness of the clamp material...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001524
EISBN: 978-1-62708-221-1
... Abstract A 140 ft. (42.7 m) long boom on a dragline crane used in coal strip-mining operations failed. One of the principal load-bearing longitudinal beams or chords of the trussed boom had fractured adjacent to a bolt hole at a location about halfway along the length of the boom. Over...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0089551
EISBN: 978-1-62708-218-1
... of the casting. The mass of a feeder-riser system located near the tear retarded cooling in this region, creating a hot spot. This supported the conclusion that the tear causing the fracture of the axle housing was formed during solidification by hindered contraction and was enlarged in service by fatigue...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001284
EISBN: 978-1-62708-215-0
... fronts fail to fuse during the casting process. Fig. 1 Overall view of a riser removed from stock (top) and a broken riser. Arrow indicates the location of cold shuts in the stock riser. Fig. 2 Closeup view of the thumb position on the stock riser. Arrow indicates flow lines...
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Published: 01 December 1993
Fig. 1 Overall view of a riser removed from stock (top) and a broken riser. Arrow indicates the location of cold shuts in the stock riser. More
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001826
EISBN: 978-1-62708-241-9
... S a … 7.7 2.2 a From EDX analysis Fig. 5 EDX profile of the inner (steam side) scales in the boiler riser tube Fig. 6 EDX profile of the external scales at a location near the punch Fig. 7 EDX profile of the external scales at location opposite of the punch...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001639
EISBN: 978-1-62708-229-7
... (172 ft) Middle horizontal weld at 59 m (192 ft) Middle horizontal weld at 63 m (207 ft) Fig. 1 Tank 15 riser layout sketch The approximate radial locations of annulus access risers are illustrated in Fig. 1 . Locations are in feet from the south riser. The north, south, east...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001074
EISBN: 978-1-62708-214-3
..., as well as proper risering. Conclusion and Recommendations Most Probable Cause The yoke body pin failed because of the presence of shrinkage cavities, which reduced the load-bearing capability of the component. Casting defects were always found at the location corresponding to an abrupt change...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001675
EISBN: 978-1-62708-220-4
... of reaction from within the reformer tubes, and the riser, through which the product passes once more within the radiation zone. The manifold lies horizontally, with the riser situated centrally in a vertical position, there being forty-four reformer tubes disposed symetrically, and welded to the manifold...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001083
EISBN: 978-1-62708-214-3
... contained pockmarks on the base plate surfaces, some of which were through-wall, but no damage was observed on the vanes. Table 1 summarizes the features or markings that were observed on each impeller, the approximate location of through-wall pockmarks, and the laboratory designation assigned to each...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001555
EISBN: 978-1-62708-217-4
... breakage of the axle had occurred intergranularly in a brittle manner, possibly, initiated by a shallow zone of fatigue along the sharp radius acting as stress riser. Aircraft components Axles Landing gear Radii Fe-0.33C-1.50Ni-1.15Cr Fatigue fracture Brittle fracture Intergranular fracture...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001815
EISBN: 978-1-62708-241-9
... , the service fractures were consistently at the intersection of the shank and the forged square head section, which was a stress riser. This location corresponded closely to the bottom of the threaded hole in the head necessary for the electrical connection within the chamber and was the maximum stress plane...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001375
EISBN: 978-1-62708-215-0
... location. The crack in casting 1 was found in the drain area. The crack extended radially through the seating surface and the internal casting wall adjoining the drain. Figure 1 illustrates the crack observed on the top of the seating surface in casting 1. Figure 2 documents the crack propagation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001594
EISBN: 978-1-62708-229-7
... to detect a crack prior to the component leaking would involve frequent inspections at a given location and that the cost of the inspection program would far exceed the benefits of avoiding a leak. Instead, TU Electric locates these cracks by visually monitoring for leaks. Field experience with fatigue...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
... in some locations. Moreover, many castings (especially aluminum and steel castings) generally lend themselves to being weld repaired, with proper attention to the details of weld repair procedures. In many instances, the “repair” is cosmetic rather than a structural repair. Some may make a distinction...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... is insufficient to feed the shrinkage occurring in the thick section. The shape, location, and size of the risers govern the degree to which they feed the casting. Small errors in designing the risers often cause great differences in the results. Gating can often affect the efficiency of a riser. A riser must...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001738
EISBN: 978-1-62708-220-4
... (typically made of HK40 or HP40+Nb) and flows down through each tube and is collected in a bottom manifold. The partially reformed gases contain hydrogen, carbon monoxide, carbon dioxide, methane and steam. Then the gases flow towards the riser (typically made of HP40+Nb or Supertherm), and from...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001832
EISBN: 978-1-62708-241-9
.... A manual damper is opened or closed to control airflow based on tank vacuum. Air in-leakage through tank penetrations on risers also provides a source of purge air to the tank vapor space. The air is drawn through piping connected to a tank riser, through the tank vapor space, and exhausted through a riser...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001148
EISBN: 978-1-62708-228-0
... and microfractographic examination followed. Tensile testing and a flattening test completed the experimental portion of the investigation. Initial Site Inspection The failure analysis began with an initial inspection of the failed section of pipeline on location. This included collecting the several fragments...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001569
EISBN: 978-1-62708-229-7
... intensification and significantly lower the overall stress necessary for fatigue to occur. Rupture and reformation of protective oxide films may also act as a stress riser or promote further localized oxidation or corrosion which can then become self perpetuating. Case Histories Water Wall/Lower Furnace...