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Principal Mission of NDT&E Activities
The NDT&E Department has the following
major objectives:
- Research and development of
production technologies of NDT&E (ultrasonic, radiography,
penetrant, magnetic, eddy current, leak testing, etc.) for
various industrial facilities (power generating equipment,
pipelines, hoisting devices, etc.)
- Expert assessment with the aim of
optimization of the package of NDT&E methods to specific
construction
- Computerization of NDT&E processes
for visualization of NDT&E results, improvement of the test
result validity, processing of large massives of information
- Expert assessment of the condition of
metal constructions
- Training and certification of NDT&E
personnel
- Development of NDT&E codes (draft of
the state standards, etc.)
- Development of methodological
materials for training and certification of NDT&E personnel
Technological Environment
In 1955, while attaching great
importance to progress of NDT&E in welding production, the E.
O. Paton Electric Welding Institute (EWI) established the
laboratory of physical methods of non-destructive testing for
the quality of welded joints, which later developed into a
research department and two design-technological departments.
The best known developments of the E. O. Paton EWI on NDT are
a range of automated units for ultrasonic testing of the
quality of welded joints of large diameter pipes. Such units
are operating in the pipe and metallurgical plants,
pipe-welding bases and in the construction of the line
pipelines in several countries.
Besides large diameter pipes, ultrasonic
testing is used for checking welded joints of light alloys and
non-metallic materials, the welded joints of drill bits,
components of wind-driven electric plants, and for an
integrated inspection of various projects. A gamma of
training devices developed at the Institute allow the
operators to be trained effectively.
A lot of attention is given in the
Institute to the application of acoustic emission and optical
holography for engineering diagnostics of the service life and
the stressed-strained state of welded metal structures.
In the field of radiation methods of
control, development work was performed in order to create the
X-ray detectors with a low content of silver, X-ray TV systems
with improved performance for automatic interpretation of the
x-ray TV images, portable radiometers and dosimeters, creation
of portable equipment for radioscopy of the welded joints of
pipelines, etc.
A unique high-energy radiation
laboratory is functioning at the Institute in which studies
can be performed and thick items can be controlled using
powerful x-ray units and betatrons.
Developments in the field of magnetic
inspection should be noted, namely indirect magneto-acoustic
flaw detector for integrated control of the sleeves of tractor
engine cylinders, multi-purpose flaw detector for control of
complex-shaped welded joints, flaw detector based on the
welding power source, and portable magnetization devices
incorporating permanent magnets.
In order to control the tightness of
welded joints on various products and structures, a range of
units and complexes for control of pipes, pipelines, tanks,
and protective casings were developed; in particular, a set of
put-on vacuum chambers for sheet structures.
One quickly developing field of NDT is
the computerization of NDT processes. Computer processing
allows visualization of the control results, essential
improvement of the test results validity, and processing of
large massives of information.
New technological capabilities in the
performance of ultrasonic testing were implemented in the
application of computerized flaw detectors, which allow
development of new technologies and control of various
critical and complex components.
A package of work on solving various
technology tasks was carried out, using computerized
ultrasonic flaw detectors. Such flaw detectors, for instance,
were used for studying ceramic materials, plastics and
composites. The Department performed a series of studies and
developed the methodology of ultrasonic control of ceramic
parts, using regular and computerized flaw detectors.
High-frequency ultrasound should be used for detection of
small l(~ 50 mcm) defects. Such work was performed using a
scanning ultrasonic microscope developed by the Institute of
Chemical Physics (Russia) together with the E. O. Paton
Electric Welding Institute, which, unlike the optical and
electron microscopes, enables investigation of not only the
surface and near-surface layers, but also the inner structure
of an object; i.e., generation of an image of an object
structure at any depth across its entire thickness.
New technological capabilities in the
performance of ultrasonics of various objects are opened up by
the portable computerized ultrasonic P-scan (FORCE Institute)
flaw detector. The Department specialists performed an expert
assessment of the condition of metal of critical elements of
power generating equipment using the P-scan system after
checking with the manual ultrasonic flaw detectors. The
purpose of this work was an experimental study of the
technological capabilities of the system and their compliance
with the requirements of the inspection codes applied in the
industry.
Besides performance studies, development
of equipment and technologies of control, the Departamento
carries out extensive educational and methodological work on
training and certification of NDT personnel. The Department
conducts lectures and practical sessions, and certify the
personnel on various types of controls (UT, X-ray, magnetic,
etc.).
It should be noted that the Departmental
experts used the lion's share of their potential for solving
the problems of the NDT industry, introducing their
developments in the enterprises of various ministries and
departments.
However, in connection with the industry
restructuring and overall decline of industrial production,
the scope of orders from enterprises for performance of
research and development of technologies for control of the
produced items, has markedly decreased. The funding for
performance of the feasibility studies and research work was
also cut back.
On the other hand, a number of new tasks
arose in connection with the difficulties of the period we are
living through, which the Departmental experts, having
reoriented, had to focus on:
- The development of technologies for,
and performance of, NDT for various industrial facilities
subordinated to the State Labour Inspection of Ukraine;
namely, power generating equipment, pipelines, hoisting
devices, etc.
- Development of basic NDT codes
(drafts of the state standards, state labour safety codes,
etc.).
- Development of methodological
materials for training and certification of NDT personnel.
- Introduction of the international
three-level system for certification of NDT personnel in
Ukraine.
The Departmental experts are carrying
out extensive research and social work:
- Taking an active role in the work of
the Ukrainian Society for Non-Destructive Testing and
Technical Diagnostics, National Certification Committee of
Ukraine on Non-Destructive Testing, Technical Committee TK78
of the State Standardization Organization of Ukraine, and
various scientific-technical conferences in the field, etc.
- Publishing books, reference books and
manuals on non-destructive testing in the field, etc., as
well as participating in the publication of the "Technical
Diagnostics and Non-Destructive Testing" journal.
All the welding technologies (all kinds
of equipment and materials) and welded structures need to use
the non-destructive testing methods and means. This accounts
for the broad range of dynamic nature of the subjects
addressed by the Department, its involvement in the the
welding production, and the diversity of the applied processes
which develop at the junction of various sciences.
In 1984 the Scientific Council on the
comprehensive subject of "Technical Diagnostics and
Non-Destructive Testing" was set up at the Presidium of the
Academy of Sciences of Ukraine. This gave an impetus to the
NDT&E development in Ukraine. The Council began making
programs of NDT&E development in the enterprises and
organizations of Ukraine, the scientists and experts started
meeting more often and exchanging experiences at the Council
sessions and at the seminars and meetings conducted by this
Council.
The Ukrainian Society for
Non-Destructive Testing and Technical Diagnostics (US NDT&TD)
was established at the meeting of the leading experts of the
country on October 28, 1990. The aim of the Society's
activity is the consolidation of efforts of scientists and
engineers for the development of creative and business
activity, information exchange, satisfying the professional
interests and the development of international contacts on
NDT&TD. The first National Program of NDT&TD development in
Ukraine was established by the initiative of US NDT&TD. The
program demonstrated the significant scientific and technical
potential of the scientists of Ukraine in the field of
NDT&TD. Later, US NDT&TD set up the National Certification
Committee of Ukraine on NDT, which had the aim of organizing
the personnel certification in keeping with international
standards.
One of the main aspects of US NDT&TD
activity is organizing conferences, seminars, exhibitions and
meetings of experts, as well as conducting the leading
European company seminars in Ukraine. US NDT&TD gives a lot
of attention to contacts and cooperation with similar
foresight societies. In 1995, US NDT&TD was accepted into the
European Committee on NDT (EC NDT), a number of agreements
were signed and negotiations were held on cooperation with the
societies of Russia, Belarus, Poland, Czech, Croatia, Germany,
Great Britain, Denmark, Italy, and others.
The work on standardization in Ukraine
is led by the State Committee of Ukraine on Standardization,
Metrology and Certification (Gosstandardt). All the USSR
standards (GOSTs) are valid in Ukraine and several dozens of
them were elaborated in the NDT field.
For continuation of the work on
standardization in the field of NDT&E, Gosstandardt set up a
Technical Committee on Standardization "Technical Diagnostics
and Non-Destructive Testing" (TC-78). This is a social
organization which unites the leading experts on NDT&E,
determines the priority areas of work and qualified performers
in the field of NDT&E. It's main aim is unification of the
standards of Ukraine with the European norms. |