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failure investigation

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180061
EISBN: 978-1-62708-256-3
... Undetermined cause 5 Causes of failures in some industry investigations Table 1 Causes of failures in some industry investigations Failure origin Percentage Improper material selection 37 Fabrication defects 16 Improper heat treatment 14 Design error 12 Unexpected...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180091
EISBN: 978-1-62708-256-3
... Fault tree Fig. 6 Corrective action tree Fig. 1 USS Saratoga bridge. Photograph by Daniel P. Dennies, Bikini Atoll, 2003 Fig. 2 Field investigation kit. Not shown are digital camera, cellular phone, and laptop/notebook computer. Fig. 4 Failure Mode Assessment...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.9781627082563
EISBN: 978-1-62708-256-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.9781627082532
EISBN: 978-1-62708-253-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180127
EISBN: 978-1-62708-256-3
... out over the water, making them hard to access Abstract Abstract This chapter describes some common pitfalls encountered in failure investigations and provides guidance to help engineers recognize processes and “quick fixes” that companies often try to substitute for failure analysis...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180001
EISBN: 978-1-62708-256-3
... investigation is an integral part of any design and manufacturing operation, providing critical information to solve manufacturing problems and assist in redesigns. This chapter addresses several aspects of failure investigation, beginning with the challenges of organizing such efforts and the need to define...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270019
EISBN: 978-1-62708-301-0
...Abstract Abstract This chapter discusses the basic steps of a failure investigation. It explains that the first step is to gather and document information about the failed component and its operating history. It advises investigators to visit the failure site as soon as possible to record...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630001
EISBN: 978-1-62708-270-9
...Abstract Abstract Failure analysis is a systematic investigative procedure using the scientific method to identify the causes of a failure. This chapter begins by exploring what failure analysis is followed by a section describing the sequence of stages in the investigation and analysis...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430149
EISBN: 978-1-62708-253-2
...—Failure Investigation of a Low Temperature Superheater Tube Case Study 7—Failure Investigation of Reheater Outlet Tube Case Study 8—Failure Investigation of Primary Superheater Tube of Coal-fired Boiler Case Study 9—Failure of Final Superheater Tube in a Thermal Power Plant Case Study 10...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430107
EISBN: 978-1-62708-253-2
...Abstract Abstract This chapter describes some of the most effective tools for investigating boiler tube failures, including scanning electron microscopy, optical emission spectroscopy, atomic absorption spectroscopy, x-ray fluorescence spectroscopy, x-ray diffraction, and x-ray photoelectron...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910475
EISBN: 978-1-62708-250-1
... methods; corrosion testing techniques; and mechanical testing techniques. A guide to investigative techniques used in corrosion failure analysis is provided in a table, describing the advantages and limitations of each technique. The principal stages of the investigation and analysis of corrosion failures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180217
EISBN: 978-1-62708-256-3
... A. , Metallurgical Failure Analysis , McGraw-Hill , 1993 • Colangelo V.J. and Heiser F.A. , Analysis of Metallurgical Failures , 2nd ed. , John Wiley & Sons , 1987 • Dennies D.P. , “ The Organization of a Failure Investigation ,” Practical Failure Analysis , June 2002...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180151
EISBN: 978-1-62708-256-3
... with the investigation and analysis of metallurgical failures that occur in service. It describes the steps of an orderly failure analysis from collecting and examining samples to performing mechanical and nondestructive tests, preparing and examining fractographs and micrographs, determining failure mode, writing...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180197
EISBN: 978-1-62708-256-3
...Abstract Abstract This chapter is a compilation of terms and definitions related to component failure analysis. Selected References Selected References • ASM Materials Engineering Dictionary , Davis J.R. , Ed., ASM International , 1992 • Failure Analysis and Prevention...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180029
EISBN: 978-1-62708-256-3
... information concerning the examination of other turbopumps noted that the same component was not cracked. But the failure investigation was not complete. The physical cause had been determined, but the root cause had not. Therefore, a team was sent to the supplier who fabricated the part. The welding...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430351
EISBN: 978-1-62708-253-2
... of a bend with a generous radius can be a cause of erosion or erosion-corrosion damage of a boiler tube. Improper boiler water chemistry further aggravates the problem. Case Study 35—Failure Investigation of Low-Temperature Reheater Tubes Case Study 36—Failure Investigation of Economizer Coil Tube...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430204
EISBN: 978-1-62708-253-2
... hydrogen embrittlement occurs near or at room temperature. Case Study 12—Failure Investigation of a Waterwall Tube Background Details A rupture from a high-temperature region of a waterwall tube of a 310 MW capacity boiler was reported. Details regarding the material of construction (MOC...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430325
EISBN: 978-1-62708-253-2
... to vibrations of low amplitude. Case Study 31—Failure Investigation of Final Superheater Tube Case Study 32—Failure Investigation of Final Superheater Tube in a Thermal Power Plant Waterwall tubes in pulverized coal power boilers often show circumferential cracking in the form of horizontal banding...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430314
EISBN: 978-1-62708-253-2
... of the flue gas and the mineral content of the coal. When high ash coals are used, it is not possible to combat fly ash erosion completely; rather, it can only be minimized. Case Study 29—Failure Investigation of Low-Temperature Reheater Tube of Middle Bank Coil Erosion of the tube surface due...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430290
EISBN: 978-1-62708-253-2
... is generally initiated by sulfur. Case Study 26—Failure Investigation of Waterwall Tube of a Waste Heat Boiler Acid dew-point corrosion or cold-end corrosion is quite common in boilers using fossil fuels for steam generation. It is one type of low-temperature corrosion. When sulfur-bearing fuel (all...