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Description / Abstract:
This practice establishes the minimum requirements for conducting
liquid penetrant examination of
nonporous metal, and nonmetal components.
The penetrant examination processes described in this practice are
applicable to in-process, final,
and maintenance (in-service) inspections. These processes are
applicable for the detection of
discontinuities, such as lack of fusion, corrosion, cracks, laps, cold
shuts, and porosity, that
are open or connected to the surface of the component under
examination.
Caution must be exercised in the usage of elevated temperature with
components manufactured from
thermoplastic materials. Also, some cleaners, penetrants, and
developers can have a deleterious
effect on nonmetallic materials such as plastics. Prior to
examination, tests should be conducted
to ensure that none of the cleaning or inspection materials are
harmful to the components to be
examined.
The values stated in inch-pound units are regarded as standard. The SI
units given in brackets are
for information only.
All areas of this practice may be open to agreement between the
cognizant engineering organization
and the supplier, or specific direction from the cognizant engineering
organization.
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.