Technical Policy of Gazprom in the Field of Welding Production and Nondestructive Quality Testing of Welded Connections

NDT World ◽  
2015 ◽  
Vol 18 (4) ◽  
pp. 29-32
Author(s):  
Вышемирский ◽  
Evgeniy Vyshemirskiy
Keyword(s):  
Nondestructive Testing ◽  
Regulatory Document ◽  
T Joints ◽  
Physical Methods ◽  
Nondestructive Methods ◽  
Ultrasonic Methods ◽  
Regulatory Documents ◽  
Technical Requirements ◽  
Quality Testing ◽  
Nondestructive Quality

Introduction. The article is based on the plenary report taken place on 22–24 September, 2015 in Minsk at the “Gazprom” branch meeting “Gas Transmission Objects. Nondestructive Testing of Welded Connections. Condition and Mainstreams”. Special attention is given to regulatory documents improvement for better implementation of advanced NDT means and materials compliant with “Gazprom” technical requirements. Method. Route and qualification tests of modern NDT systems were fulfilled. On the basis of the tests results the “Program for development of nondestructive methods for welds quality testing for the period 2015-2017” was developed. Results. Route tests have shown that full detection of inadmissible defects is only possible when radiographic and ultrasonic methods are used together. The tests have confirmed that the volume of testing with physical methods should be increased. The results have been processed and analyzed. Conclusions. The updated “Register of nondestructive instruments for welded connections quality testing” has been prepared and then approved. The regulatory document for NDT of welded T-joints with covers has been developed with the aim to estimate their applicability for future operations.

scholarly journals Nondestructive testing of composite T-Joints by TNDT and other methods

2020 ◽  
pp. 107012
Author(s):  
Vladimir Vavilov ◽  
Arsenii Chulkov ◽  
Stanislav Dubinskii ◽  
Douglas Burleigh ◽  
Victor Shpilnoi ◽  
...  
Keyword(s):  
Nondestructive Testing ◽  
T Joints

The Ultrasonic Testing Methods for Special Braze Cladding

2016 ◽  
Vol 834 ◽  
pp. 141-146
Author(s):  
Constantin Stefan Petriceanu ◽  
Corneliu Rontescu ◽  
Gabriel Gârleanu
Keyword(s):  
Electron Microscopy ◽  
Nondestructive Testing ◽  
Production Technology ◽  
Ultrasonic Testing ◽  
Testing Methods ◽  
Experimental Procedure ◽  
Ultrasonic Methods ◽  
Testing Techniques ◽  
Ultrasonic Investigation

The present paper highlights the ultrasonic methods that can be used to detect the problems that can occur in special braze cladding. For this purpose, the sample production technology is described and the nonconformities that can arise during welding have been reviewed. The main nondestructive testing techniques are briefly presented motivating the chosen method for this study. Further, in the paper, the experimental procedure, materials and equipment used for welding are detailed. In the end, a comparison has been made between various parameters resulted from the nondestructive ultrasonic investigation. A validation for the presented method has been made through destructive examination by electron microscopy.

Comparison of Ultrasonic Methods for Thermally Damaged Concrete Nondestructive Testing

2018 ◽  
Vol 776 ◽  
pp. 86-91
Author(s):  
Michal Matysík ◽  
Ladislav Carbol ◽  
Zdenek Chobola ◽  
Richard Dvořák ◽  
Iveta Plšková
Keyword(s):  
Nondestructive Testing ◽  
Elastic Wave ◽  
Measurement Technique ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Ultrasonic Measurement ◽  
Ultrasonic Methods ◽  
Nonlinear Elastic ◽  
Nonlinear Elastic Wave

Behaviour of concrete under elevated temperatures is very complex. There is a change of mechanical and physical parameters with temperature. In this paper we study the relations of thermal damage processes in concrete and parameters obtained by different ultrasonic methods. The concrete specimens were heated in programmable laboratory furnace. Selected temperature (200°C, 400°C, 600°C, 800°C, 1000°C and 1200°C) were maintained for 60 minutes. The first ultrasonic measurement technique in this paper was Ultrasonic Pulse Velocity method. The pulse velocity in a concrete depends on its density and its elastic properties. Therefore, it is possible to deduce the quality and the compressive strength of the concrete from the ultrasonic pulse velocity. The second ultrasonic measurement technique in this paper uses broadband pulse-compression signal, with variable amplitude to measure the change of fundamental frequency. This method is based on Nonlinear Elastic Wave Spectroscopy. Nonlinear Elastic Wave Spectroscopy methods takes advantage of the fact, that nonlinearities in material manifest themselves as a resonant frequency shifts and harmonics or dumping coefficients changes. The progress of nondestructive testing parameters was confirmed by results from the destructive tests.

scholarly journals REGULATORY SUPPORT FOR THE ACTIVITIES OF A DENTIST-THERAPIST IN MODERN CONDITIONS

2021 ◽  
Vol 77 (1) ◽  
pp. 21-24
Author(s):  
M.A. Ivanova ◽  
Keyword(s):  
Content Analysis ◽  
Dental Care ◽  
Working Time ◽  
Descriptive Statistics ◽  
Regulatory Document ◽  
Working Process ◽  
The Real ◽  
Normative Documents ◽  
Regulatory Documents ◽  
Real Costs

Introduction: the activities of dentists, like doctors of other specialties, are constantly being improved, which indicates the need to revise the regulatory documents. The aim of the study was to establish the real costs of working time of dentists-therapists when visiting one patient to develop a regulatory document that meets modern requirements. Material and methods: the methods of descriptive statistics, content analysis of normative documents on the organization of dental care for the population, photo-timing studies of the working process of dentiststherapists, calculation of extensive and intensive indicators were used in the work. Results: the real costs of working time of dentists-therapists in the provision of specialized medical care to one patient and the need to develop a new regulatory document were established. Conclusions: standard industry norms have been developed for the visit of one patient to a dentist-therapist.

scholarly journals Usage of additional coefficients for the cost of works during the engineering-technical investigation of buildings

2021 ◽  
Vol 263 ◽  
pp. 05002
Author(s):  
Aleksandr Perunov ◽  
Ivan Doroshin
Keyword(s):  
Regulatory Document ◽  
Regulatory Documents ◽  
Frequency Of Use ◽  
Complicating Factors ◽  
Definition Of ◽  
The Cost

The questions of frequency of using for some correcting coefficients for definition of cost of works on the engineering technical investigation are presented in the article. These coefficients are specified in recommended cost documents. There suggested the using of some other coefficients, suiting for specific investigation organization, that are not recommended in sourcebooks. The list of coefficients, considering the complicating factors and conditions of investigation are brought in regulatory document. The frequency of using for these coefficients in the specific laboratory is given. The conditions are described, at which the value of coefficients is correctly defined, that depends on the frequency of use of these coefficients in the explored organization. The comparison is brought between different regulatory documents (sourcebooks) by which the cost of engineering-technical investigation is calculated. The coefficients are given, that consider complicating factors, used in the specific organization, that is explored, and absent in regulatory documents. The reasons are explained, by which these coefficients must be taken into account at engineering-technical investigation.

scholarly journals Legal aspects of conducting clinical trials and military trials with the participation of military personnel

2021 ◽  
Vol 40 (3) ◽  
pp. 51-56
Author(s):  
Ivan V. Fateev ◽  
Aleksey B. Seleznev ◽  
Evgeniy V. Ivchenko ◽  
Valeriy S. Ivanov
Keyword(s):  
Clinical Trials ◽  
Military Personnel ◽  
Legal Status ◽  
Legal Aspects ◽  
Regulatory Document ◽  
Regulatory Documents ◽  
The Russian Federation ◽  
Conducting Research ◽  
The Right ◽  
Scientific Pedagogical

Currently, the procedure for conducting clinical trials and military trials is regulated by a number of regulatory documents ranging from Federal laws to local orders of medical organizations. The article analyzes the regulatory documents of the Russian Federation in relation to conducting clinical trials and military trials with the participation of military personnel. It is noted that the legal status of a volunteer (military personnel) when conducting research in full-scale conditions is not fixed. In addition, in the case of conducting research with the involvement of military personnel as volunteers, it should be borne in mind that a serviceman has the right to engage in scientific, pedagogical and other creative activities. There is no regulatory document defining payments to volunteers participating in clinical trials. These organizational aspects require legislative permission to exclude legal conflicts in the planning, organization and conduct of research involving military personnel as volunteers (patients) (bibliography: 9 refs).

scholarly journals Scientific basis for the trainer aircraft anti-g equipment requirements

2021 ◽  
Vol 24 (5) ◽  
pp. 49-59
Author(s):  
M. A. Kiselev ◽  
S. V. Levitsky ◽  
D. V. Moroshkin
Keyword(s):  
Scientific Basis ◽  
Military Aircraft ◽  
Noise Abatement ◽  
Technical Parameters ◽  
Regulatory Documents ◽  
Technical Requirements ◽  
Military Conflicts ◽  
Civil Aircraft ◽  
Additional Costs ◽  
The Military

The design process of a new aircraft (AC) is always associated with the issue of choosing its basic technical parameters, or, in other words, the formation of its conceptual design. In case of a civil aircraft, the choice of these parameters is defined by the requirements for operational safety, market conditions, norms that specify the tolerable harmful impact of the aircraft on the environment, etc. In case of a military aircraft, its outlay mostly depends on the concept of potential military threats, ways of using the military aircraft in military conflicts. Some of these requirements are formulated in regulatory documents – the Aviation Requirements for Civil Aircraft and the General Tactical and Technical Requirements of the Air Force for Military Aircraft. For example, Part 25 of the Aviation Requirements for Civil Aircraft defines the Airworthiness Standards for transport aircraft. It should be noted that the stated above requirements are often a tool of competition, for example, when tightening the aircraft noise abatement procedures provides advantages for particular manufacturers, not admitting other manufacturers to enter the market, whose aircraft do not conform to the new standards. Thus, complying with the requirements virtually involves additional costs both in the aircraft development and during its operation. In addition, the implementation of the requirements stated above can lead to the deterioration of the aircraft’s performance, and hence, to the decrease of its competiveness and combat effectiveness. Therefore, each requirement of the regulatory documents should have a profound scientific rationale. This article analyzes one of the regulatory documents requirements referring to the necessity of anti-g system on board aircraft. The authors propose the approach to specify the existing criterion to provide the scientific basis for the anti-g system on board aircraft by assessing the actual level of pilot load when maneuvering. The subject under study is of particular importance for the Yak-152 trainer aircraft. The actual level of loads during pilotage of the Yak-152 trainer aircraft does not require the use of the anti-g system but if to be based on a formal criterion, namely, in terms of the maximum operational overload value, the aircraft should be fitted out with such a system.

scholarly journals Normative Provision of Biosafety of the Specialized Anti-Epidemic Teams Functioning

2009 ◽  
pp. 21-31 ◽  
Author(s):  
M. V. Pchelintseva ◽  
M. N. Lyapin
Keyword(s):  
Risk Analysis ◽  
Management System ◽  
Practical Realization ◽  
Regulatory Document ◽  
Regulatory Documents ◽  
The Way

Analyzed were normative and methodical documents which were in force at different stages determined as regards current tasks, staff schedule and the equipment table of the specialized anti-epidemic teams (SAET). Substantiated was the necessity to develop the new regulatory document, comprising requirements of biosafety provision of the specialized anti-epidemic teams functioning. Determined was the way of further improvement of normative and methodical provision of biosafety under conditions of practical realization of the conception of SAET modernization. It included the development of the set of regulatory documents specifying the fulfillment of the main provisions of the Standing Оrder and elaboration of management system based on risk analysis.

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