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ASTM E 2191 Document Information:
Title
Standard Test Method for Examination of Gas-Filled Filament-Wound Composite Pressure Vessels Using Acoustic Emission
ASTM International
Publication Date:
Feb 15, 2008
Scope:
This practice provides guidelines for acoustic emission (AE)
examination of filament-wound composite pressure vessels, for
example, the type used for fuel tanks in vehicles which use natural
gas fuel.
This practice requires pressurization to a level equal to or
greater than what is encountered in normal use. The tanks'
pressurization history must be known in order to use this practice.
Pressurization medium may be gas or liquid.
This practice is limited to vessels designed for less than 5000
psi (340 bar) maximum allowable working pressure and water volume
less than 2.5 ft3(0.07 m3).
AE measurements are used to detect emission sources. Other
nondestructive examination (NDE) methods may be used to gain
additional insight into the emission source. Procedures for other
NDE methods are beyond the scope of this practice.
This practice applies to examination of new and in-service
filament-wound composite pressure vessels.
This practice applies to examinations conducted at ambient
temperatures above 70°F (21°C). This practice may be used at
ambient temperatures below 70°F if provision has been made to fill
to the tank's rated pressure at 70°F.
The values stated in inch-pound units are to be regarded as the
standard. SI units which are in parentheses are for information
only.
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
- composite gas cylinders
- composite pressure vessel
- flaws
- gas pressure vessels
- NGV tanks
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