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leak testing

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003229
EISBN: 978-1-62708-199-3
... Abstract Leak testing is used to determine the rate at which a liquid or gas penetrates from inside a component or assembly to the outside, or vice versa. This article discusses the type of leaks, namely real leaks, and virtual leaks. It describes the leak testing of fluid systems at pressure...
Image
Published: 30 August 2021
Fig. 17 Pipe section with miter joint girth weld after leak testing More
Image
Published: 30 September 2015
Fig. 7 Typical flange pipe assembly used in a hot vibration leak test More
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006336
EISBN: 978-1-62708-179-5
..., and leak testing. The technique, strengths, and weaknesses of each of the nondestructive methods are also discussed. cast iron dimensional inspection eddy-current inspection leak testing liquid penetrant inspection magnetic-particle inspection nondestructive inspection radiographic inspection...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005341
EISBN: 978-1-62708-187-0
... Abstract The commonly used nondestructive testing of cast products include liquid penetrant inspection, radiographic inspection, fluoroscopic inspection and automated defect recognition, ultrasonic inspection, eddy current inspection, process-controlled resonant testing (PCRT), leak test...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001478
EISBN: 978-1-62708-173-3
... and remove oxidation during the heating cycle. The entrapped flux prevents the flow of the filler metal into that particular area, thus reducing joint strength. It can also cause a false leak in vacuum service or during a proof test. Noncontinuous Fillets Noncontinuous fillets are usually found...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003228
EISBN: 978-1-62708-199-3
... Abstract This article reviews nondestructive testing (NDT) and inspection techniques, namely liquid penetrant, magnetic particle, ultrasonics, X-ray, eddy current, visual and radiography that are commonly used to detect and evaluate flaws or leaks in an engineering system. This article compares...
Image
Published: 01 January 1993
current 130 A (DCEP) 130 A (DCEP) 154 A (DCEP) 145 to 150 A (DCEP) Leak test (b) Welds rejected Welds accepted Welds rejected Welds accepted Welding time per cover 40 h 25 h 40 h 25 h Weld penetration:  Bead 1 1.6 mm ( 1 16 in.) into steel 3.2 mm ( 1 8 More
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006814
EISBN: 978-1-62708-329-4
... testing should be used to detect such cracking, and the part rejected or repaired before being placed into service. Other portions of this Volume that deal with manufacturing operations discuss this type of failure. When the first type of failure occurs (that is, when there is a manufacturing-related...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003237
EISBN: 978-1-62708-199-3
... on the structure and the test conditions. If there is a high rate of occurrence, the individual burst-type signals combine to form a continuous emission. In some cases, AE inspection relies on the detection of continuous emission as in the case of leak testing. The instrumentation of an AE inspection provides...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006822
EISBN: 978-1-62708-329-4
... or potential anomalies. Computed tomography may be used for smaller specimens or sections. Ultrasonic testing (UT) or phased-array UT to characterize cracklike flaws, if present One of the primary goals of NDE is to identify features and flaws that may be related to the damage, leak, or rupture...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001473
EISBN: 978-1-62708-173-3
..., radiographic testing, and ultrasonic testing. Although visual inspection is not strictly a test method, it does have an important role in NDE procedures and is often the only inspection method used. Acoustic emission (AE) testing and leak testing are described separately, because they are somewhat different...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006438
EISBN: 978-1-62708-190-0
..., ultrasound, radiography, penetrant test, magnetic particle test, leak test, eddy current tests, potential drop tests, flash and vibro thermography, shearography, acoustic emissions, and many other methods. This article provides discussion on general NDE science and considerations for specific technique...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006098
EISBN: 978-1-62708-175-7
... tests for the flanges are described as follows: Hot vibration leak test: Designed to determine leak tightness in the as-assembled condition and after subjecting it to heat, water quenching, and vibration and load cycling ( Fig. 7 ). The leak rate under a specified air pressure is measured...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006454
EISBN: 978-1-62708-190-0
... at approximately 150 kHz. However, it is not uncommon to use sensors with 60 and 30 kHz resonances in applications such as detecting leaks, testing composite materials and concrete, testing pipelines, and testing large storage tanks for internal corrosion. Higher-frequency sensors (300 kHz resonant) are used...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005900
EISBN: 978-1-62708-167-2
...-ray test of coil profile Pressure test at max 10 bar Leak testing (helium-spray test) Corona test (glow discharge) of each coil segment in vacuum chamber under low-vacuum atmosphere, applying 800 VAC to the coil against surrounding ground. The checking method is based on the fact...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005758
EISBN: 978-1-62708-171-9
... be pressure and leak tested in accordance with the appropriate standard. Do not use gas lines for grounding! Bulk Supply Operation and Maintenance Considerations The following are bulk supply operation and maintenance considerations: A gas supplier should have the primary responsibility...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006462
EISBN: 978-1-62708-190-0
... consequential failure. Hydrostatic leak testing prior to use is a nondestructive test requirement for all vessels within the regulatory scope of the BPVC. The ASME BPVC and the European Union’s Pressure Equipment Directive (as well as other pressure vessel regulations and design codes around the globe...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006457
EISBN: 978-1-62708-190-0
... Typical configuration of bonded honeycomb assembly. (a) Trailing edge. (b) Leading edge Water in Core Cells Upon completion of the bonded assembly, some manufacturers perform a hot-water leak test to determine if the assembly is leakproof. If the assembly emits bubbles during the leak test...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003659
EISBN: 978-1-62708-182-5
... to facilitate plugging. Nondestructive testing is frequently performed in the area near the leak to determine the extent of the damage before repair or shutdown. These holes are required in reinforcing pads applied to support nozzles in pressure vessels. In these cases, leakage from the hole signals...