ASTM-E2863 2011

$40.63

E2863-11 Standard Practice for Acoustic Emission Examination of Welded Steel Sphere Pressure Vessels Using Thermal Pressurization

Published By	Publication Date	Number of Pages
ASTM	2011	7

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Categories: 17.140.20 - Noise emitted by machines and equipment, ASTM

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Description

ASTM E2863-11

Historical Standard: Standard Practice for Acoustic Emission Examination of Welded Steel Sphere Pressure Vessels Using Thermal Pressurization

ASTM E2863

Scope

1.1 This practice is commonly used for periodic inspection and testing of welded steel gaseous spheres (bottles) is the acoustic emission (AE) method. AE is used in place of hydrostatic volumetric expansion testing. The periodic inspection and testing of bottles by AE testing is achieved without depressurization or contamination as is required for hydrostatic volumetric expansion testing.

1.2 The required test pressurization is achieved by heating the bottle in an industrial oven designed for this purpose. The maximum temperature needed to achieve the AE test pressure is ≤250°F (121°C).

1.3 AE monitoring of the bottle is performed with multiple sensors during the thermal pressurization.

1.4 This practice was developed for periodic inspection and testing of pressure vessels containing Halon (UN 1044), which is commonly used aboard commercial aircraft for fire suppression. In commercial aircraft, these bottles are hermetically sealed by welding in the fill port. Exit ports are opened by explosively activated burst disks. The usage of these pressure vessels in transportation is regulated under US Department of Transportation (DOT), Code of Federal Regulations CFR 49. A DOT special permit authorizes the use of AE testing for periodic inspection and testing in place of volumetric expansion and visual inspection. These bottles are spherical with diameters ranging from 5 to 16 in. (127 to 406 mm).

1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 8.

Keywords

acoustic emission; corrosion; flaws; HALON 1301; steel

ICS Code

ICS Number Code 17.140.20 (Noise emitted by machines and equipment)

DOI: 10.1520/E2863-11

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Practice Significance and Use Basis of Application Apparatus
3	Safety Precautions Calibration and Verification FIG. 1 FIG. 2
4	Procedure FIG. 3
5	Report Keywords A1. INSTRUMENTATION SPECIFICATIONS A1.1 Sensors A1.2 Signal Cable A1.3 Couplant A1.4 Preamplifier A1.5 Power/Signal Cable A1.6 Power Supply A1.7 Signal Processor
6	X1. EXAMPLE INSTRUMENT SETTINGS AND REJECTION CRITERIA X1.1 X1.2 X1.3 X1.4
7	TABLE X1.1

Additional information

Standard Title	E2863-11 Standard Practice for Acoustic Emission Examination of Welded Steel Sphere Pressure Vessels Using Thermal Pressurization
Published Code	ASTM
Publication Date	2011
Pages Count	7
ICS Codes	17.140.20 - Noise emitted by machines and equipment