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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c9001564
EISBN: 978-1-62708-230-3
... Abstract An 8 in. diam stainless steel black liquor feed pipe to a carbon steel digester had failed within one year of service. The material was type 316 molybdenum-containing austenitic stainless steel. The service environment was alkaline black liquor at 175 deg C (350 deg F). The pipe had...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001065
EISBN: 978-1-62708-214-3
... Abstract A 460 mm (18 in.) diam suction line to the main feed water pump for a nuclear power plant failed in a violent, catastrophic manner. Samples of pipe, elbow, and weld materials (ASTM A106 grade B carbon steel, ASTM A234 grade WPB carbon steel, and E7018 carbon steel electrode...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001699
EISBN: 978-1-62708-234-1
... corrosion coupons installed in the system, was recommended. The monitoring of residual levels of chemicals and automatic feeding of chemicals was recommended to control corrosion and organic growth. Selected References • Jack T.R. , Biological Corrosion Failures , Failure Analysis and...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001791
EISBN: 978-1-62708-241-9
... plants or generation of electric energy in general, except for small scale units. The work pressure of such boilers can reach up to 26 MPa, i.e., higher than the critical point [ 2 ]. When feeding of vapor generators is carried out with nontreated water, i.e., water which contains soluble salts, it...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001327
EISBN: 978-1-62708-215-0
... Abstract Three ASME SA106 grade B carbon steel feed water piping reducers from a pressurized water reactor showed indications of flaws near welds during ultrasonic testing. Further examination and testing indicated that the cracks resulted from a low-cycle corrosion fatigue phenomenon...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091528
EISBN: 978-1-62708-229-7
... environment. When the cause of failure is inadvertent concentration of a corrodent or inadvertent exposure of the part to a corrosive foreign substance, such as use of a steam line to feed concentrated caustic during chemical cleaning, the preventive measure may be no more complicated than exclusion of the...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001434
EISBN: 978-1-62708-236-5
... subsequently developed. The rod was made from a medium carbon or low-alloy steel in the hardened and fully tempered condition. Evidence indicated that, following modification to the oil feed system, the rod that broke was returned to service with fine cracks present immediately below the weld deposit, which...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0048772
EISBN: 978-1-62708-220-4
... return bend from a triolefin-unit heater ruptured ( Fig. 1a ). The bend was made from 115-mm (4 1 2 -in.) schedule 40 (6.0 mm, or 0.237-in., wall thickness) pipe of ASTM A213, grade T11, ferritic steel. The unit operated at 2410 kPa (350 psi), with a hydrocarbon feed stream (85% propylene...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001398
EISBN: 978-1-62708-229-7
... found to be free from cracking. The de-superheaters were fed with treated feed water which, after demineralisation, was treated with activated sodium sulphite as an oxygen scavenger and sodium hydroxide to adjust the alkalinity. From this stage, water was fed to the de-superheaters and the boiler water...
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
... applications in piping and pressure vessel analysis, impact analysis, and microelectronics. The article describes the steps involved in the design process using the FEA. It concludes with two case histories that involve the use of FEA in failure analysis. failure analysis finite element analysis impact...
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
... both general- and special-purpose applications of FEA. The special-purpose applications of FEA covered are piping and pressure vessel analysis, impact analysis, and microelectronic and microelectromechanical systems analysis. The article provides case histories that involved the use of FEA in failure...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
... the upper central portion of the ingot ( Fig. 1 ) during solidification and contraction of the metal, when there may eventually be insufficient liquid metal to feed the last remaining portions as they contract. A concave cavity thus forms at the top of the ingot because of metal shrinkage during...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003556
EISBN: 978-1-62708-180-1
... intended to reduce microbial populations and corrosion inhibitors that may feed them will become more common. Buried structures and interior surfaces of tanks and piping are often protected by the application of protective coatings. While these coatings have improved over the years, many older...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001477
EISBN: 978-1-62708-229-7
... further explored and it ultimately transpired that the shutdown prior to the decision to proceed with the repairs to water wall tubes was occasioned by the failure of a pipe supplying feed water to an injection type steam desuperheater situated above the drum. The pipe had a dia. of 1 in. and could...
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
... ) 2. Cotton I.J. : Refinery boiler feed water systems: corrosion and control . Mater. Perform. 6 , 46 ( 2000 ) 3. Port R.D. , Herro H.M. : The NALCO Guide to Boiler Failure Analysis . McGraw Hill , New York ( 1991 ) 10.1055/s-2007-1024720 4. Hargrave R.E...
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
... circulation resulting either from general loss of circulation, for example, feed-pump failure, or from local loss of circulation affecting only a few tubes. Two instances of superheater rupture occurred about 10 days apart in a stationary industrial boiler. Three tubes failed the first time, and four...
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
... adiabatic temperature rise of 486 °C. It was estimated that this is an eleven-fold increase in the amount of heat that would be released if Al were not included in the mixture. One early scenario for the accident was that the feed tube became plugged during the second shift and the workers tried to purge...
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
... return bend from a triolefin-unit heater ruptured ( Fig. 3a ). The bend was made from 115-mm (4 1 2 -in.) schedule 40 (6.0 mm, or 0.237-in., wall thickness) pipe of ASTM A213, grade T11, ferritic steel. The unit operated at 2410 kPa (350 psi), with a hydrocarbon feed stream (85% propylene...
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
... from the turbine and intersected with a horizontal pipe that was capped on one end and connected to the condenser on the other end. The horizontal pipe had three expansion joints. The purpose of the expansion joints was to isolate the boiler feed pump turbine from stresses induced by thermal growth of...
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
... fractured rim and portion of dislodged gantry crane. The turbine of the set that sustained the accident was also seriously damaged, the rotor being bent so that it fouled the casing; the column supporting the actuating cylinder for the control valve was broken and the oil feed pipes fractured. The...