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power supply circuit

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Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001385
EISBN: 978-1-62708-215-0
... at the service entrance will not trip the main circuit breaker in a home or business since the arcing fault is on the upstream (power company) side of the circuit breaker. In incident 1, the arcing was so severe that it eventually overloaded the fuses in the primary side of the supply transformer which provided...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001473
EISBN: 978-1-62708-229-7
... of main gear wheel and one rim after the accident. The alternator and the supply were connected to the works' busbars by separate circuit breakers. Protection for the alternator was provided by circulating current, negative phase sequence, and reverse power relays. A synchronising relay...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001296
EISBN: 978-1-62708-215-0
...Abstract Abstract A 52000 bearing steel valve guide component operating in the fuel supply system of a transport aircraft broke into two pieces after 26 h of flight. The valve guide fractured through a set of elongated holes that had been electrodischarge machined into the component. Analysis...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003523
EISBN: 978-1-62708-180-1
... similarity with the principles for failure analysis of material incidents that are less complex than a large-scale accident. The article provides a brief review of some general concepts on the use of modeling which can be a very powerful tool for information pertaining to the reconstruction of an accident...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003549
EISBN: 978-1-62708-180-1
.... An external battery was used to impress a voltage. Voltage and current were recorded with the external power supply applied and removed. There was no evidence of stray currents or electrical discharge. It was noted that the ambient temperature and slow or stagnant flow conditions present in the piping...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
... of the current being supplied to the induction coils. In all three cases the frequency was 7250 cycles/s. Since the plate vibration frequency corresponded to the operating frequency of the induction furnace, the furnace frequency was increased to 9000 Hz to see whether a change in frequency would eliminate...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006772
EISBN: 978-1-62708-295-2
... representation of a physical system or process. The use of modeling can be a very powerful tool for information pertaining to the reconstruction of an accident. Whether the modeling consists of simple mathematical modeling of a physical system or more complex computer modeling of a system or part, the results...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003502
EISBN: 978-1-62708-180-1
... to avoid startling customers who are selecting produce as the water jets spray without warning. One innovative design was fitted with an enclosed stainless steel trough, level controls, four ultrasonic misting devices, oscillator circuits, a blower, and electromechanical controls. It was indeed a complex...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001424
EISBN: 978-1-62708-233-4
..., 11,000 volts, 745/592 rpm. It drove two 1,615 kW, 420 volt, D.C. generators with a 25-ton flywheel interposed between them, supplying power to a 4,000 hp 840 volt 43/90 rpm, D.C. motor driving a rolling mill at a steel works. The machine had been in almost continuous operation for seven years, the first...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... and the anode surfaces affects the resistance of the current path in the solution and the external circuit. Thus, if dissimilar pipes are butt welded with the electrolyte flowing through them, the most severe corrosion will occur immediately adjacent to the weld on the anodic member. Effect of Shape...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
... solution with an oxidizing power corresponding to point A and a corrosion rate corresponding to this point. If the oxidizing power of this solution is increased, say, by adding oxygen or ferric ions, the corrosion rate of the metal will increase rapidly. Note that for such a metal, the corrosion rate...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
... the resistance of the current path in the solution and the external circuit. Thus, if dissimilar pipes are butt welded with the electrolyte flowing through them, the most severe corrosion will occur adjacent to the weld on the anodic member. Effect of Shape The geometry of the circuit elements determines...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001396
EISBN: 978-1-62708-229-7
... and oxidation Brittle fracture Hydrogen damage and embrittlement In the middle of the 1950's, an unusual type of corrosion made its appearance in several boilers in the Central Power Stations in the United Kingdom. In many instances it resulted in embrittlement and violent rupture of the generating tubes...
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
.... It also discusses the effects of design, welding practices, and elevated temperatures on the failures of heat exchangers. Selected References Selected References • Reynolds S.D. and Pement F.W. , Corrosion Failures of Tubing in Power Plant Auxiliary Heat Exchangers , Mater. Perform...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003503
EISBN: 978-1-62708-180-1
... approach to analysis; the analyst must determine how every possible failure mode of every system component affects the system operation. The procedure consists of: FAILURE MODES AND EFFECTS ANALYSIS (FMEA) has evolved into a powerful tool that can be used by design engineers during all phases...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006813
EISBN: 978-1-62708-329-4
... D.P. , Advances in Brazing: Science, Technology and Applications , Woodhead , Oxford, U.K. , 2013 3. Montgomery M. , Enemark A. , and Hangaard A. , Failure of Titanium Condenser Tubes after 24 Years Power Plant Service , J. Fail. Anal. Prevent. , Vol 14 , 2014 , p 554...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006815
EISBN: 978-1-62708-329-4
... that either failed or were associated with the failure are identified, the first step is to request and gather all the available evidence pertaining to the failure, for example: The failed parts themselves Drawings Supply documents Change orders Reports Photographs Videotapes Sales...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
.... As of 1972, the characteristics of SCC were known to include ( Ref 9 ): Tensile stress is required. This stress may be supplied by service loads, cold work, mismatch in fitup, heat treatment, and the wedging action of corrosion products. Only alloys are susceptible (no pure metals), although...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
...Abstract Abstract This article explains the main types and characteristic causes of failures in boilers and other equipment in stationary and marine power plants that use steam as the working fluid with examples. It focuses on the distinctive features of each type that enable the failure...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003512
EISBN: 978-1-62708-180-1
... Turbine Materials , EPRI AP-4477, Project 2382-3, Electric Power Research Institute, April 1986 , p 1.1 – 1.17 3. Viswanathan R. and Dooley R.B. , Creep Life Assessment Techniques for Fossil Power Plant Boiler Pressure Parts , Proc. Conf. on Life Prediction for High Temperature Gas...