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fouling

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Published: 30 August 2021
Fig. 105 Example of fouling deposits on the inside of heat-exchanger tubes. Fouling greatly reduces heat transfer between the shell-side and tube-side process fluids. More
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Published: 15 May 2022
Fig. 22 Mechanisms against biofouling. (a) Antifouling coatings create an inhospitable environment for marine creatures to attach to the surface. (b) Fouling-release coatings facilitate removal of marine creatures from the surface. More
Image
Published: 15 January 2021
Fig. 9 Friction factors for flow through test lines under biocide treatment in an oilfield produced-water system indicate the extent of biofouling. In this case, biocide A loses control of microbial fouling after 60 days relative to biocide B. More
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Published: 01 January 2002
Fig. 8 Friction factors for flow through instrumented sidestreams under biocide treatment in an oilfield-produced water system can indicate biofouling. In this case, biocide “A” loses control of microbial fouling after 80 days, relative to biocide “B,” in a comparison carried out in a field More
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
.... 3 One 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...
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
... coatings designed to prevent wear or corrosion in an operating system, or the alteration of flow regimes and heat-transfer coefficients due to the biological fouling of metal surfaces. Given the potential impact of MIC on a wide range of industrial operations, it is not surprising that microbiological...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001769
EISBN: 978-1-62708-241-9
... in oral cavity were due to bacterial activity [ 9 ]. Besides, calcium accumulation was also noticed in hot spring [ 10 ]. Mixed fouling of microorganism and other minerals existing in various water systems take place when the water flows through equipment and pipes. It decreases the performance...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001048
EISBN: 978-1-62708-214-3
.... Circumstances Leading to Failure The coolers were initially made of carbon steel seamless tubes. They showed severe corrosion, scaling, and fouling on the OD side, giving rise to frequent maintenance work and shutdowns. Therefore, the decision was made to upgrade the tubes to type 304L seamless stainless...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001673
EISBN: 978-1-62708-227-3
... International Congress on Marine Corrosion and Fouling , National Bureau of Standards , Gaithersburg, MD , pp. 241 – 263 ( 1972 ). 4. Powell G. W. , “Effect of Sulfides on the Corrosion of Cupro-nickels,” The Ohio State University, private communication ( 1985 ). 5. Pickering H. W...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006939
EISBN: 978-1-62708-395-9
... of the material. The following key criteria should be considered when choosing an additive package ( Ref 3 ): Additives should have good miscibility with the polymer or prepolymer. Additives should be efficient and cost-effective in their function. Additives should be nontoxic, with no foul odor...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001648
EISBN: 978-1-62708-234-1
...) shown seated at flanged end of section of pump housing The operating environment for the pump shaft was fresh water. The water was untreated, with the exception of a biocide used to control freshwater mussels and inhibit fouling of the water delivery and distribution system. The active ingredient...
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
..., and fouling, and fabrication defects, which include most incidents of poor workmanship, improper material, and defective material, together account for more than 75% of all failures of steam-power-plant equipment. Most steam-generator failures occur in pressurized components, that is, the tubing, piping...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006788
EISBN: 978-1-62708-295-2
... facilities, an increase in the pressure drop or loss of flow through piping systems ( Fig. 9 ), a failure of turbine meters to rotate, or a marked decline in the efficiency of heat exchangers are indicators of possible biological fouling. A history of failures due to unexpectedly high corrosion rates can...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006812
EISBN: 978-1-62708-329-4
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006825
EISBN: 978-1-62708-329-4
..., manufacturing and materials defects, and so on. The incidents of overheating, corrosion, and fouling account for more than 75% of all failures of steam power plant equipment. The first step during investigation of the root-cause of failure of boiler tubes is to correctly identify the active damage mechanism...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003568
EISBN: 978-1-62708-180-1
... by high flow velocities; thus, partial fouling of gas passages in tube bands by deposition of fly ash can lead to erosion by forcing the flue gases to flow through smaller passages at higher velocity. This effect, sometimes called laning, exposes tube surfaces to a greater probability of impact...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006795
EISBN: 978-1-62708-295-2
... example of abrasive erosion is the impact of fly ash entrained in the flue gases in screen tubes or superheater tubes of boiler systems ( Ref 91 ). Erosion is enhanced by high flow velocities; thus, partial fouling of gas passages in tube bands by deposition of fly ash can lead to erosion by forcing...
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
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... damage than ferrous-base alloys. Hydrogen damage also results from fouled heat-transfer surfaces. There is some disagreement as to whether hydrogen damage can occur only under acidic conditions or whether it can happen under alkaline and acidic conditions as well. Hydrogen damage may occur from...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
... of rotating ring Fouling or rubbing on housing or shoulder during operation Fractured flange on ring of roller bearing Mounting pressure unevenly distributed around flange; hammer blows during mounting Crack or fracture at root of cage tongues or across cage pocket In bearings generally: insufficient...