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The Nondestructive
Examination (NDE) department
offers both in-laboratory and portable field inspections
utilizing radiographic, magnetic particle, ultrasonic, liquid
penetrant, hydrostatic and videoborescopic examination techniques.
Certified Welding Inspections (CWI) are also performed on
a local, national and international basis as well as in support
of the other divisions of Thielsch Engineering.
Our inspectors are qualified to meet the requirements of the
American Society for Nondestructive Testing Practice SNT-TC-1A.
Each nondestructive examination is performed to the requirements
of major Codes, including the ASME Boiler and Pressure Vessel
Codes, the ASME/ANSI Codes for Pressure Piping, the American
Petroleum Institute Codes, American Welding Society Standards
and military specifications.
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Nondestructive Examinations
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Radiographic Examination
(RT) Radiographic examinations
are performed to detect and evaluate internal defects
and structural variations, including cracks, lack of
fusion, incomplete penetration, porosity and inclusions.
These tests are performed with Iridium 192, Cobalt isotopes,
or low-voltage x-ray. Several dark room trailers are
available for on-site development of radiographs. |
Image of a beehive through
low-voltage x-ray.
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Ultrasonic Examination
(UT) Ultrasonic
examinations are performed for the detection and sizing
of internal defects, flaws or discontinuities in piping,
castings,
forgings, weldments or other components. Exact sizing
techniques have been developed to detect and monitor
progressive cracking
in a variety of equipment.
Magnetic Particle Examination (MT) Dry
magnetic particle examinations and wet fluorescent magnetic
particle examinations
are performed on ferromagnetic materials to detect surface
and slight subsurface discontinuities. Specialized wet
fluorescent magnetic particle techniques are available for
black light
internal examinations of equipment through borescopes.
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| Liquid Penetrant Examination (PT) Various
types of liquid penetrant examination methods are utilized
to detect open
or surface cracks or defects in materials. Red dye or fluorescent
penetrants are utilized as well as various types of wet and
dry developers. |
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Eddy Current Testing (ET) Eddy
current testing is a rapid and accurate technique used
to detect discontinuities in
tubing, heat exchangers, condensers, wires, plates, etc.
Eddy current testing is also performed for alloy separation
and for the determination of treatment conditions. The location
of repair welds, girth welds and seam welds may also be detected
on ground machined surfaces.
Videoprobe Television Inspection Videoprobe television
viewing and inspection equipment is available for examining
the internal
components of turbines, headers and other equipment. With
this technique, a miniature precision camera is mounted on
the tip of a flexible probe. The equipment is used to detect
and evaluate cracks and pits and to view inaccessible areas.
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| Borescope Examination Borescopes
are available for internal examinations and evaluations
of piping and other components.
Videotaping and photography of indications are also available.
Specialized techniques have been developed for borescopic
examinations with black light sources. |
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Nondestructive Testing Training Nondestructive
testing programs are provided under the guidelines of SNT-TC-1A
both
in-house and on-site. ASNT Level III consultation is also
available. NDE procedures are prepared to the specific requirements
of our clients.
Certified Weld Inspectors (CWI). Our Certified
Welding Inspectors (CWI) can pinpoint exactly what testing
is necessary to qualify
a weld, weld procedure, or individual welders. Each welding
code follows three main categories of Welding Qualification;
Welding Procedure Specification (WPS), Welding Procedure
Qualification Record (WPQR), and Welder Performance Qualification
(WPQ).
Leak Testing Leak testing is performed to
detect and locate leaks in pressure containment parts and
structures. This
includes welded, brazed, adhesion bonded and other assemblies. |
For more information contact:
Arthur Haley
Tel: (401) 467-6454
Fax: (401) 467-2398
E-mail: ahaley@thielsch.com
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