GOST R 54907-2012

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  ГОСТ Р 54907-2012

GOST R 54907−2012 Trunk pipeline transport of oil and oil products. Technical diagnostics. The main provisions of the

GOST R 54907−2012

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

Trunk pipeline transport of oil and oil products

TECHNICAL DIAGNOSTICS

The main provisions of the

Trunk pipelines for oil and oil products transportation. Technical diagnosis. Basic principles

OKS 19.100

Date of introduction 2012−10−01

Preface

The objectives and principles of standardization in the Russian Federation established by the Federal law of 27 December 2002 N 184-FZ «On technical regulation», and rules for the application of national standards of the Russian Federation — GOST R 1.0−2004 «Standardization in the Russian Federation. The main provisions"

Data on standard

1 was DEVELOPED by limited liability company «Scientific-research Institute of transport of oil and oil products» (LLC «NII TNN»), an Open joint stock company «Center of technical diagnostics» (JSC «CTD «diaskan»)

2 MADE by PC 7 Subcommittee «Trunk pipeline transport of oil and oil products» of the technical Committee on standardization TC 23 «Technique and technologies of mining and processing of oil and gas"

3 APPROVED AND put INTO EFFECT by the Federal Agency for technical regulation and Metrology dated 24 may 2012 N 75th St

4 this standard takes into account the basic regulatory provisions of the following international and American national standards:

— ISO 13623:2009* «Oil and gas industry. Pipeline transport system» (ISO 13623:2009 «Petroleum and natural gas industries — Pipeline transportation systems»);
________________
* Access to international and foreign documents mentioned here and below, you can get a link on the website shop.cntd.ru. — Note the manufacturer’s database.

— ISO 15649:2001 «the oil and gas Industry. The system of pipes» (ISO 15649:2001 «Petroleum and natural gas industries. Piping»);

API STD 2610 «Design, construction, operation, maintenance and inspection of equipment terminals and tanks» (API STD 2610 «Design, construction, operation, maintenance, and inspection of terminal & tank facilities»);

— API STD 1163 «Requirements for pigs moving diagnosis» (API STD 1163 «In-line inspection systems qualification standard»);

— ANSI/ASME 31.4 In «systems of pipeline transportation of liquid hydrocarbons and other liquids» (ANSI/ASME 31.4 In «Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids»).

5 In this standard follows the requirements of:

— Federal law of 21.07.1997 N 116-FZ «On industrial safety of hazardous production facilities»;

— Federal law of 21.12.1994 # 69-FZ «About fire safety»;

— Federal law of 27.12.2002 N 184-FZ «On technical regulation»;

— Federal law of 30.12.2009 N 384-FZ «Technical regulations on safety of buildings and constructions»;

— Technical regulation «On safety of equipment for work in explosive environments», approved by the decree of the Government of the Russian Federation dated 24.02.2010 N 86;

— Technical regulation «On safety of machines and equipment» approved by decree of the Government of the Russian Federation dated 15.09.2009 N 753

6 INTRODUCED FOR THE FIRST TIME


Information about the changes to this standard is published in the annually issued reference index «National standards», and the text changes and amendments — in monthly indexes published information «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in a monthly information index «National standards». Relevant information, notification and lyrics are also posted in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet

1 Scope

1.1 this standard establishes the basic provisions for the implementation of technical diagnostics and applies to pipelines linear part of trunk pipelines (pipelines), finished the construction, after reconstruction, overhaul, operating, preservation and maintenance mode in a safe condition.

1.2 this standard does not apply:

— pipelines for liquefied hydrocarbon gases and their mixtures, unstable gasoline and condensate oil gas, and other liquefied hydrocarbons with elasticity of saturated vapor at 20 °C of more than 0.2 MPa; pipelines transporting gaseous environment;

— main oil pipelines (pipelines) with the multiphase pumped product (liquid gas);

— flowlines.

This standard is intended for use by organizations:

— operating oil trunk pipelines (pipelines);

— are customers of technical diagnostics;

— performing technical diagnostics of main pipelines (oil pipelines);

— involved in the design, construction, overhaul and reconstruction of oil trunk pipelines (pipelines);

— supervising the construction, repair and reconstruction of oil trunk pipelines (pipelines);

— conducting training and knowledge testing of personnel performing the operation, construction, overhaul, reconstruction, technical diagnostics of trunk pipelines (pipelines).

2 Normative references

This standard uses the regulatory references to the following standards:

GOST R 51164−98 steel pipe mains. General requirements for corrosion protection

GOST 2.501−88 unified system for design documentation. Accounting rules and storage

GOST 9.602−2005 unified system of corrosion protection and aging. The construction of underground. General requirements for corrosion protection

GOST 14782−86 non-destructive Control. Welded connections. Ultrasonic methods

GOST 18442−80 nondestructive testing. Capillary methods. General requirements

GOST 20415−82 nondestructive testing. Methods acoustic. General provisions

GOST 21105−87 nondestructive testing. Magnetic particle inspection

GOST 23479−79 nondestructive testing. Methods optical. General requirements

Note — When using this standard appropriate to test the effect of reference standards in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet or published annually by the information sign «National standards» published as on January 1 of the current year and related information published monthly indexes published in the current year. If the reference standard is replaced (changed), when using this standard should be guided by replacing (amended) standard. If the reference standard is cancelled without replacement, then the situation in which the given link applies to the extent that does not affect this link.

3 Terms and definitions

This standard applies the following terms with respective definitions:

3.1 acoustic emission monitoring: a Form of NDT based on the analysis of parameters of elastic waves radiated by the test object.

3.2 verification: Confirmation through the provision of objective evidence that specified requirements have been fulfilled.

3.3 visual and measuring inspection: type of nondestructive testing in which the primary information is perceived by the organs of sight, either directly or using optical instruments, non-controlling and measuring (e.g. with a magnifying glass), and the measurements are performed by means of measurements of geometrical quantities.

3.4 pipeline diagnostics: technical diagnostics, consisting of complex of works provide information about the defects, welds, characteristics of the pipelines and their location, with the use of inline inspection tools that implement various types of nondestructive testing, for identifying on the basis of this information, the presence and nature of defects.

3.5 pig inspection device: a Device that is moved inside the pipeline flow of the pumped product, is equipped with a means of monitoring and recording data on the defects and characteristics of pipe wall, welds, and their location.

3.6 auxiliary pipelines: Pipelines (oil pipelines) drainage and leaks from the pumping units, drainage straining filters, pressure regulators, pressure relief from safety valves, piping tank vent and damping of the shock wave, discharge capacities for the collection and leaks.

3.7 defect geometry pipeline: a Defect that causes change in the flow section of the pipe due to the change of its shape in cross section.

3.8 defect of the pipeline (pipeline): the deviation of the parameters (characteristics) of pipelines (oil pipelines) or elements thereof from the requirements established in the regulations.

3.9 additional defectoscopy: a Complex of works carried out in order to clarify the parameters of the defects of the plot after performing pigs moving diagnostics, acoustic emission control or electrometric diagnosis.

3.10 alignment change: the Complex of works performed on site host start cleaning and diagnostics in order to accommodate cleaning and inspection in the camera start-up.

3.11 interpretation of pigs moving diagnosis: Transcript of electronically received in the result of pigs moving diagnostics information captured during the pass pipeline pigs inspection apparatus, the defects and characteristics of pipe wall, welds, and their location on the pipeline.

3.12 the contractor technical diagnosis: Organization, committed to conduct technical diagnostics at the facility.

3.13 camera launch and receive cleaning agents and diagnostics: Hardware linear part of main oil pipeline (pipeline) designed to zapakovki cleaning and diagnostics (including pistons banner and dock) into the pipeline and removal from the pipeline.

3.14 liquid penetrant inspection: Non-destructive testing method that uses the possibility of penetration of liquids in a special defect on the surface of the test object in order to detect them.

3.15 the linear part of main oil pipeline (oil pipeline):the component part of the main pipeline (oil pipeline) consisting of pipelines (including valves and other armature, transitions through natural and artificial obstacles), installations of electrochemical protection from corrosion, the route of transmission lines, constructions of technological communication and other devices and structures intended for the transportation of oil (oil products).

3.16 the main pipeline (oil pipeline): a Single production-technological complex of pipelines and related pumping stations, storage of oil (petroleum products) that meet the requirements of the current legislation of the Russian Federation in the field of technical regulation, and other technological facilities, providing transportation, acceptance, delivery of oil (oil products) that meet the requirements of the current legislation of the Russian Federation, from the points of receipt to points of delivery to consumers or transshipment to another mode of transport.

3.17 magnetic particle inspection: a Method of nondestructive testing that uses for detecting defects in metal products the attraction of particles of the magnetic powder by the forces of the inhomogeneous magnetic fields that occur on the product surface when there are surface and subsurface defects.

3.18 marker sign: an Identification sign of the pipeline on the ground.

Note — Installs on the linear part of main oil pipeline (pipeline) with the distance between adjacent marker signs not more than 2 km, and also at the junctions of the main pipeline (oil pipeline) through natural and artificial obstacles. The location marker signs should be unchanged. The binding of marker marks on the ground must be reflected in the specifications of the trunk oil pipeline (pipeline) crossings through water obstacles and a linear part.

3.19 marker item: Pre-selected point on the earth’s surface above the axis of the pipeline in place to establish a marker transmitter is designed for precise reference to the terrain data pigs moving diagnosis.

3.20 external pipeline diagnostics: Technical diagnostics conducted with the outer surface of the tubing, without the introduction of equipment into the cavity of the pipeline.

3.21 non-destructive testing: Control of compliance of parameters of technical devices, materials, products, parts, assemblies, welds to requirements of normative documents, which is not prejudicial to the suitability of the test object to the application and exploitation.

3.22 the pipelines which are in conservation mode and contents in a safe condition: Main and technological pipelines (pipelines), is temporarily withdrawn in accordance with the design documentation of the exploitation remaining in good technical condition during the specified period of preservation, after which can be reactivated and put into operation.

3.23 cleaning device (scraper): Intube device designed for cleaning the inner cavity wall of the pipeline from wax and paraffin deposits, foreign objects and contamination.

3.24 clipping gate valves: gate Valves, intended for technological separation systems [process units, pumping stations, linear part of main oil pipeline (pipeline)], connected by pipelines.

3.25 scraper-caliber: in-device designed to assess the minimum value of the passage section of the pipeline determined before starting the treatment of the pigs or inline inspection tools.

3.26 cleaning & diagnosis: the Device that is moved inside the pipeline (pipeline) flow of the pumped product, is designed to perform cleaning and technical diagnostics of pipelines (depending on the type of treatment and diagnosis).

3.27

3.28 technical specification for conducting technical diagnostics: A document containing the purpose, procedure, technical diagnostics, as well as input data required for diagnosis defined in the technical specification of the objects and the release of the technical report.

3.29 the host start cleaning and inspection: Production site with a complex of interconnected equipment for technological operations in the launch and start-up of the inline treatment, diagnostic and separation device in the flow of product being pumped in the main oil pipeline (the pipeline).

3.30 the node receiving treatment and diagnostics: the Production site with a complex of interconnected equipment for technological operations on the reception and extraction of the inline treatment, diagnostic, dividing and sealing devices of trunk pipelines (pipelines).

3.31 node pass cleaning and inspection: Production site located on it a technological piping, providing a pass-line pigs treatment, diagnostic, dividing and sealing devices oil trunk pipelines (pipelines) as a stop, and without stopping the pumping station according to the scheme:

— receiving funds cleaning and diagnostic chamber pass, start cleaning and diagnostics of the camera passes;

— pass cleaning and diagnostics without stopping through the broken station.

3.32 ultrasonic testing: non-destructive Acoustic method of quality control used for detecting defects of an elastic wave of the ultrasonic range, input into the product (welded joint) from the outside and reflected from defects or receivina on them.

3.33 electrometric diagnostics: technical diagnostics provide information about the technical condition of the pipeline by measuring and recording electrical parameters directly or indirectly characterizing the state of the system of protection against corrosion of the metal pipeline and the level of security, as well as characterizing the degree of corrosion danger of the environment surrounding the pipeline.

4 Reduction

This standard applies the following abbreviations:

AEC — acoustic emission monitoring;

VIC — visual and measuring control.

VIP — pig inspection device;

Overhead lines overhead line;

VTD — in-diagnosis;

DDK — additional defectoscopy;

Instrumentation — control and measuring devices;

Transmission of SOD — camera launch and receive cleaning agents and diagnostics;

LCH — linear part;

MK — magnetic particle inspection;

MN — main trunk pipeline;

Optp — trunk pipelines;

NDT — non-destructive testing;

OU — cleaning device;

SOD — cleaning and diagnostics;

TOR — terms of reference;

Ugz — install galvanic protection;

UDZ — installation of drainage protection;

UT — ultrasonic testing;

Ukz — installation of cathodic protection;

UT — ultrasonic thickness measurement;

ED — electrometric diagnosis;

Cathodic protection — electrochemical protection.

5 General provisions

5.1 definition of the objectives and tasks of technical diagnostics

Technical diagnostics begins with the definition of the operating organization of goals and tasks of technical diagnostics and determine requirements for contractor technical diagnostics.

Among the tasks of technical diagnostics — detection and identification of certain types of defects with required accuracy. The main requirements on the accuracy of detection of defects include:

— the sizing accuracy of defects;

— the accuracy of determining the position of defects on the pipeline in the longitudinal direction (distance) and on the circumference of the pipeline cross section (corner).

The operating organization on the basis of the formulated objectives and requirements forms a specification for the carrying out of technical diagnostics. The TOR may specify requirements for the types and methods of technical diagnostics and volume control.

Guided received from the operating organization’s information, by technical diagnosis of the formation of proposals for technical diagnostics using diagnostic equipment and techniques that meet the requirements established in the operating organization.

5.2 Types of technical diagnostics

5.2.1 this standard covers the following types of technical diagnostics applied to the objects included in the scope of this standard:

— VTD in accordance with section 6;

— external diagnosis methods of NDT in accordance with section 7;

— ED in accordance with section 8.

5.2.2 VTD used when examining CL MN (mnpp) in order to detect pipeline geometry defects, defects in pipe walls and welds.

5.2.3 External diagnostics with NDT methods applied during the examination of the elements CL MN (optp), which, due to their structural features, conduct of VTD.

5.2.4 External diagnostics NDT methods (DDK) is carried out on pipelines surveyed the VIP, for the purposes of verification, inspection data and in areas with lack of diagnostic information VIP. This can be used control methods, is given in 7.1.

5.2.5 ED used in the survey CL MN (optp) for the assessment of insulation coating condition, corrosion state determination CL MN (optp), the causes and the corrosion rate assessment of means ECP.

5.2.6 in the absence of the possibility of VTD to determine the technical condition of the pipeline carried out on the basis of:

— analysis of technical documentation for the pipeline;

— examination of corrosion condition and state of corrosion protection of pipeline;

— determine the horizontal and vertical position and the depth of the pipeline according to 7.3;

— survey of the pipeline by the method of the AEC;

— conduct DDK on pipelines with potential defects in the pipe wall, welds, insulation coating according to the results of the AEC, and survey of the corrosion condition of the pipeline according to 7.2;

— conducting WICK according to 7.1.2.2;

— carrying out ultrasonic inspection in accordance with 7.1.3.1;

— conducting UT in accordance with 7.1.3.1;

— the holding of MK in accordance with 7.1.4.1;

— conduct liquid penetrant inspection according to 7.1.4.2.

5.3 Requirements to the contractor technical diagnostics

The contractor technical diagnostics must have:

— NDT laboratory, the competence of which is documented in accordance with the legislation of the Russian Federation. The customer of technical diagnostics has the right to present additional documentary requirements for the competence of laboratory, NC contractor technical diagnostics according to regulatory documents of the organization — the owner of the control object and verify the NDT laboratory for compliance with these requirements;

measuring devices and equipment necessary for carrying out the declared types of technical diagnostics, staffed with permits, issued in the prescribed manner;

— documents confirming qualification of the personnel sufficient for carrying out the claimed technical diagnostics and knowledge of safety rules during the execution of these works;

— documented the process of carrying out the stated types of technical diagnostics.

Documented process of technical diagnostics should contain the following mandatory procedures:

— analysis submitted by the operating organization of technical documents (TOR, questionnaire) to determine the technical capabilities of technical diagnostics and selection of needed diagnostic equipment;

— preparation of diagnostic equipment for technical diagnostics;

— technical diagnostics on the test object;

— an evaluation of the VIP pass;

— analysis of the results of technical diagnostics;

— verification of results of technical diagnostics;

— preparation and transmission operating organization of accounting documentation by results of technical diagnostics.

The contractor technical diagnostics should be guided by regulatory legal acts and technical documents establishing rules of conducting of works on dangerous industrial objects.

6 Pipeline diagnostics

6.1 Determination of requirements to vnutriutrobnomu diagnosis

6.1.1 Before conducting inspection the operating company shall provide the contractor with technical diagnostic information about the parameters of the pipelines and associated limits. This information may be provided in the form of completed questionnaires to determine the possibility of using VIP in the pipeline.

6.1.2 the composition provided by the operating organization of information includes:

— the length, outer diameter, wall thickness of the pipeline;

— parameters of pipeline valves (shut-off and safety valves, tees, nozzles) and curves (bends) of the pipeline, through which passes the VIP, such as the minimum flow area, wall thickness, protrusion inside the pipe, the radius and the bending angle of the pipe axis, the presence of protective gratings;

— types of used pipes, welded joints;

— minimum distance between valves and taps;

— the host parameters, start and reception of ODS;

— parameters of pumped product (liquid, viscosity, density, chemical composition, temperature);

— the flow parameters (direction, speed, pressure);

information on the ongoing cleanup of the pipeline.

6.1.3 To conduct inspection of the tubing should be equipped with nodes and start receiving SOD.

6.1.4 the Contractor technical diagnostics, guided by the goals and objectives of the operating organization, on the basis of analysis of information about the pipeline, due VTD determines the types and list of VIP required to conduct VTD.

6.1.5 the Contractor technical diagnosis of the operating organization provides information on the technical characteristics of VIP, confirming the possibility with their use to perform the VTD in accordance with the requirements of the TOR.

6.1.6 prior To the commissioning of newly constructed pipelines, and after completion of construction works on reconstruction or major repairs of pipelines should be carried out their inspection in the prescribed manner and fixed the defects identified by the results of VTD. Removal of defects shall be performed by and at the expense of the contractor, engaged in construction.

6.2 Selection of pigs moving inspection device

6.2.1 Determination of suitability

6.2.1.1 In order to ensure high quality of VTD operating organization and contractor technical diagnostics interact in the analysis of compliance of the technical capabilities of VIP to the task of VTD.

6.2.1.2 Accuracy and detection ability used by VIP and the kind of VTD must be supported by appropriate research.

6.2.1.3 the Minimum size of detectable defect VIP (in accordance with the technical specifications VIP) must be less than or equal to the size assumed for the defect detection in accordance with the statement of work.

6.2.1.4 location Accuracy of defects and peculiarities of the pipeline, provide VIP should be sufficient to detect these defects and features in the pipeline.

6.2.1.5 Above checks are performed taking into account the available information about the pipe wall thickness.

6.2.1.6 the Maximum distance surveyed VIP, limited mechanical properties (wear resistance, mechanical online sites VIP) must exceed the length of diagnosed pipeline. It is also important to consider the condition of the internal cavity of the pipeline (the presence of abrasive impurities, the roughness of the pipe wall), as it affects the wear of the elements of the VIP. When planning the VTD should be considered the maximum distance and time VIP, limited resource built-in power supply VIP and storage space VIP.

6.2.2 determination of the compatibility

6.2.2.1 In order to prevent the spot the VIP in the cavity of the pipeline (getting stuck) which can result in flow stoppage and the need for recovery operation of VIP in violation of the integrity of the pipeline and to prevent the loss of diagnostic data and damage of VIP operator and contractor technical diagnostics analyze the ability to securely pass VIP pipeline. While performing the following checks:

— the minimal diameter of passage of the VIP is set to less than the minimum flow section of the pipeline;

the parameters of the VIP for the passage of pipe fittings (including tees without safety grids) and elbows (bends) allow it to pass through the pipeline;

— minimum distance between pipe fittings and elbows allow VIP without stopping;

— the host parameters, start and reception of SOD, which is equipped with the pipeline, ensure a safe launch, the start, the reception and extraction of VIP;

— used during VTD mode of operation of the pipeline (flow velocity, pressure along the entire length of the pipeline) moves VIP at a speed within the allowable (in accordance with the technical specifications VIP) range;

— the temperature of the pumped product is permissible (in accordance with the technical specifications VIP) range.

6.2.2.2 When there are deviations and inconsistencies identified by the results of an audit in accordance with 6.2.2.1, the operating organization and contractor technical diagnostics take the following steps:

— elimination of discrepancies by the operating organization;

— joint development of activities to ensure the safe conduct of VTD VIP with the existing inconsistencies;

— completion by the contractor of technical diagnostics of the technical characteristics of VIP in order to bring it into conformity with parameters of the pipeline;

replacement of the VIP.

6.3 the procedure for the preparation of pipes to pass inspection pigs moving device

6.3.1 Before the VTD in order to prevent damage to the pipeline, its components and diagnostic equipment the operating organization and contractor technical diagnostics should ensure that the chosen diagnostic equipment can be freely skipped by the pipeline. To do this, the operating organization is obliged to inform the provider of technical diagnosing of any changes to the geometry of the pipeline and operating conditions (flow rate, internal pressure, temperature of the pumped product and other parameters in accordance with 6.2). The contractor technical diagnostics should confirm the availability of the necessary for the execution of works qualified professionals.

6.3.2 the Training pipeline to conduct pass VIP

6.3.2.1 Before carrying out inspection, the pipeline needs to be calibrated and cleaned.

6.3.2.2 Calibration pipeline performed the pass through the pipeline scraper pigs moving gauge or other device, allowing to estimate the minimum flow section of the pipeline. Identified minimum flow area must be entered in the relevant document, which is part of the reporting documentation of the technical diagnostics.

6.3.2.3 For the passage of the SOD through the pipeline value is the minimum allowable flow of the piping to the ODS must not exceed the identified minimum flow section of the pipeline.

6.3.2.4 To obtain high-quality diagnostic information the internal cavity of the pipeline should be cleaned. In order to clean a cavity of the pipeline before the VTD, among other methods (purification of the cavity of the tubing with reagents, omitting the gel the pistons) used in-line ow.

6.3.2.5 When conducting OU passes through the pipeline it is necessary to monitor the effectiveness of cleaning, assessing after each pass the number of cleaning products derived from receiving with Oh, and also the tendency to reduction of volumes of cleaning products in relation to the previous pass OU.

6.3.2.6 as a Result of clearing consider the totality of information about the number of OU bring cleaning products (including foreign objects) and about the technical condition of the shelter (the damage, the amount of wear of replaceable parts).

6.3.2.7 in the absence of a positive trend to the cleaning of tubing (reduction of cleaning products from pass to pass) measures should be taken to adjust the plan passes OU (flow chart of treatment), and (where necessary) replacement of the types used OU.

6.3.2.8 Before skipping the VIP should be a quality control pipeline cleaning by pass the most effective of the used op-amp with a presentation of results of control of an appropriate document, which must be part of the reporting documentation of the technical diagnostics.

6.3.2.9 Positive result of quality control of cleaning is the cleaning of pipeline control ow, in which the number of extracted cleaning products does not exceed the established by technical inspection norms (criteria for treatment).

6.3.2.10 during and after the cleaning is done prior to the completion of complex of works on inspection, in preparation for which cleaning is prohibited:

to produce the erosion of bottom sediments of the reservoirs at the pumping stations process area of the pipeline, which includes the diagnosed area;

— to make cleaning and rinsing of backup lines and loopings on the diagnosed section of the pipeline.

6.3.2.11 If there is risk of damage to the structural elements of VIP in the pipeline due to the lack of information about the parameters of the pipeline, which affect the permeability of VIP, or other reasons, the contractor technical diagnostics can make a decision on the need for additional passes pigs moving device for estimating the possibility of passing on the VIP section of the pipeline without damage and malfunction of the measuring system.

6.3.2.12 In preparation for work on VTD in MN (optp), completed construction, and also after reconstruction and capital repairs should be defined ways of ensuring the movement detector SOD (pass water or other process liquid, to pass compressed air or other inert gas, pulling a rope) to diagnose MN (mnpp). Note the nameplate characteristics of the SOD in the part of their work temperature, speed, minimal pressure drop for movement. You should also consider the impact of ambient temperature on the working environment (product transfer) used for the propulsion of SOD, to prevent the phenomena of crystallization in testing the pipeline.

6.3.2.13 Prior to the missing equipment for the diagnosis (before the launch of VIP) the operating organization checks full (100%) opening the linear valves and reports on the readiness of the contractor to technical inspection.

6.3.3 Preparation of diagnostic equipment to conduct VTD

6.3.3.1 Before skipping VIP passes functional tests. This should be confirmed by:

— performance built-in tools VIP, providing explosion safety at work;

— performance built-in power supply system of VIP;

— the correct operation of the measuring system VIP, including odometrical system;

— performance data acquisition systems in General, including verification of the correct operation of the data storage system of VIP;

— correct initialization of system VIP.

6.3.3.2 Before skipping must be made an external inspection of VIP, which includes:

examination of the elements of the VIP, providing the movement and the correct location in the pipeline (seals, discs, supporting members of structure), and subject to damage and unacceptable wear (in accordance with the operating instructions for the VIP);

— inspection items odometrical system VIP (iodometrically wheels, suspension system, wheels, wiring) for the absence of damages;

— inspection of elements of measuring systems of VIP for the absence of damage and unacceptable wear of their elements (in accordance with the operating instructions for the VIP);

— inspection of non-hidden cable connections for the absence of damages;

— General inspection of VIP for any mechanical damage of structural elements.

6.3.3.3 results of the performed functional tests, checks and inspection of VIP draw up relevant documents (acts, checklists) and included in the reporting documentation of the technical diagnostics.

6.3.4 preparation of the escorts VIP

6.3.4.1 In order to bind the identified VTD defects to the sections of the pipeline perform the installation, ground marker points along the entire length of the pipeline. Each marker point must be tied to permanent reference points: the supports of power transmission lines, pipeline valves, instrumentation, etc. During the crossing of VIP is its support for the marker points.

6.3.4.2 Marker points should be located above the axis of the pipeline.

6.3.4.3 the Distance between neighboring marker points should not exceed 2 km. If you want to set marker points on difficult sections of the pipeline should be carried out organizational activities to ensure installation of marker points and support VIP. Also in preparation for escorting the VIP is necessary to consider that the search of defects by results of inspection for seamless pipes is complicated by the inability to identify the desired section of the pipe at the location of longitudinal and spiral welds adjacent to the transverse weld seams.

6.3.4.4 Mandatory installation of marker posts for pipeline crossings of rivers, canals, ponds, Railways, roads, inaccessible areas (swamps, mountainous areas), in areas near industrial sites and settlements. We recommend the additional installation of marker points on the borders of ravines and in places the rotation axis of the pipeline.

6.3.4.5 Devices support should allow to detect a passage of a VIP. The depth of MN (mnpp) in the locations of the marker points should enable the instrument support to ensure the reception (transfer) of signal from the VIP. When calculating the maximum allowable depth of the pipeline axis from the point of installation support (in accordance with the technical characteristics of the devices support) it is necessary to consider the thickness of the wall of the pipeline. When exceeding the depth of the pipeline at the installation location of the marker points, the maximum allowed by the technical characteristics of the appliance maintenance, should provide for the required depth by making soil.

6.3.4.6 Before beginning work on the launch and the launch of VIP operator provides verification of the presence of the marker signs throughout the route of the diagnosed pipeline.

6.4 the Procedure of crossing pigs moving inspection device

6.4.1 General provisions

6.4.1.1 Activities covering manufacturing operations for launch, launch, pass, reception and extraction of the ODS must be developed and approved in advance by the operating organization.

6.4.1.2 Pass pipeline ODS is prohibited in the presence of the pipeline geometry defects of the pipeline, bends, with settings that do not meet the specifications SOD, and other piping elements that impede the passage of the SOD.

6.4.1.3 Before zapakovki VIP you need:

— verify the integrity and operability of all components and devices SOD transmission, transmitter, installed in the VIP, devices and equipment designed to control the passage of VIP and for setting marker points;

— free CAT SOD from the pumped product;

— check the position of the shut-off valve (regulating) valves of the start node of the SOD and the alarm device;

— check the communication with the dispatcher of the operating organization.

Paragraph 6.4.1.4. Programming of trip computer VIP should be performed outside the hazardous area and closed the checkpoint SOD.

As paragraph 6.4.1.5. the Node receiving the SOD on the diagnosed site must be configured to accept prior to zapakovki SOD at the camera start-up.

6.4.2 alignment change and start pigs moving inspection device

6.4.2.1 above Reeving is carried out in accordance with the requirements of operational documentation for the VIP.

6.4.2.2 completing the transmission of the ODS product transfer from MN (optp) prior to the start Oh and VIP is conducted through the auxiliary drainage pipeline.

6.4.2.3 pressure Equalization between MN (optp) (selection pressure in the well KIP) and the camera start-up (pressure gauge) is performed via a shut-off (regulating) valves of small diameter.

6.4.2.4 When programming the VIP to turn on when a pressure of the environment (to ensure that the requirements of the pressure equipment) the chamber pressure of the start-up of the ODS must be above the value required to enable the VIP to run it.

6.4.2.5 When filling the pumped product camera start ODS invalid:

— injury to the flow of the pumped product structural elements of VIP, located near the inlet nozzles of the pumped product;

— appearance of VIP movement during filling of the chamber start ODS the pumped product;

— incomplete air removal from the chamber of start ODS;

— the occurrence of a pressure difference between the extended and nominal parts of the camera start-up ODS.

6.4.3 Pass and escort of VIP

6.4.3.1 For controlling the movement of the VIP are the transmitters (transceivers) and other emitting devices installed on VIP and OU, and an external standalone instruments support. When approaching the VIP, equipped with a device of radiation (transmitter, receiver), with external device support registration of the fact and/or the time of passage of VIP marker points.

6.4.3.2 Registration of the fact and/or the time of passage of VIP marker item needed for binding of the diagnostic information of the distance to specific points on the pipeline route and in the event of cardiac SOD in the pipeline — operative detection of the stopping point.

6.4.3.3 To control the movement of ODS used regular telemetry system installed on the pipeline, and acoustic methods of control. Additionally it is allowed to register the characteristic noise of the ODS to use a sensory method (human hearing).

6.4.3.4 For controlling movement and for finding the location of the magnetic duct scrapers and magnetic flaw detectors can be used devices, registered the change of the magnetic field.

6.4.3.5 using the devices support is determined in the operating documents for these devices.

6.4.3.6 Pass VIP pipeline is monitored at the marker points brigade support in accordance with the schedule of passing the VIP pipeline, which is compiled before the launch of VIP, indicating the installation locations of the marker points. The number of teams support is determined based on the length of the site, the planned speed VIP pipeline and conditions of entrance to the marker points.

6.4.3.7 Nodes pass ODS must be configured to permit ODS to his approach.

6.4.3.8 Parallel MN (optp) (lupingu) and connecting lines (jumper) between them is disconnected from the diagnosed pipeline at a time, ensuring the safe passage of the SOD, and include the work after the passage of the SOD.

6.4.3.9 the passage of the SOD through the tees with the existing inbound and outbound flow of product transfer can cause damage, stop, jam SOD.

6.4.3.10 If pass ODS in MN (optp) and it passes the nodes of the start, pass, receiving, ODS, regardless of technological schemes for data nodes are not allowed:

— the impacts of SOD on the valving elements;

— the movement of SOD at speeds above or below the operating range on the passport;

movement in the opposite direction, if it is not provided in the design of ODS.

6.4.4 Reception and extraction of VIP

6.4.4.1 When receiving ODS at the receiving hosts of SOD to the closing of the section valves (crane) you need to make sure that SOD is in camera does not preclude the closure of the valves.

6.4.4.2 Reception and extraction of the ODS must be carried out in the presence of representatives of the operating organization and contractor technical diagnostics.

6.4.4.3 the Operation for extraction should be in accordance with the maintenance documentation of ODS.

6.5 Evaluation of pigs moving pass inspection device

6.5.1 After extracting the VIP from receiving must be carried out visual inspection, performed similarly to a visual inspection before the VIP pass, as described in 6.3.3.2, and the results of the inspection must be documented, where it says:

the date and time of receipt, extraction and inspection of VIP;

— quantity (volume), composition (sand, clay, asphalt-resin-paraffin deposits, scale, etc.) of impurities, the number of foreign objects with their description and location of impurities and foreign objects relative to the structural elements of VIP;

— all mechanical damages of VIP with detailed description of their parameters, location on the detector, the orientation in the circumferential direction (in degrees or clockwise);

— the state of the measuring system (sensors, closed impurities, signs indicating malfunction of the measuring system — the deflection transducers of the measuring system from the normal position, damage to the structural elements of the measuring system, including cable connection).

6.5.2 After inspection of VIP by technical diagnostics conducts functional tests and quality assessment of diagnostic data, resulting in check:

— the correct operation of the measuring system VIP, including odometrical system for the VTD;

— the correct operation of the data collection systems of VIP for the VTD;

— according to amount of collected information the actual length of the pipeline (stated in the TOR for VTD);

— values of the statistical data at the recorded speed VIP, pressure and temperature of the pumped product to the allowed values in accordance with the operating instructions for the VIP;

— correct displaying typical elements and sections of the pipeline (nodes, start, receiving, ODS, valves) for which there is reliable information, with visualization of diagnostic information VIP.

6.5.3 the Results of performed functional tests and inspections and issue relevant regulations (checklists) and included in the reporting documentation of the technical diagnostics.

6.6 verification of the results of diagnosing the pigs moving

6.6.1 Interpretation of data VIP

6.6.1.1 Interpretation of VIP is carried out in order to convert the obtained VIP information information about the types of detected defects (piping components) and their parameters.

6.6.1.2 When interpreting data VIP in accordance with the rules and techniques of the contractor technical diagnosis enables identification of defects with the specified parameters.

6.6.1.3 Rules and interpretation of VIP data are based on the systematization of the principles of the VIP, the characteristics of the NDT methods that are implemented in VIP, and their limitations and experience of using appropriate types of VIP and the analysis of the data.

6.6.1.4 the result of the interpretation of the data is a list of the detected defects and the features and elements of the pipeline parameters, including size, location on the pipeline (distance, angular position).

6.6.2 data Analysis

6.6.2.1 When analyzing the interpreted data of VIP compared with the results of previous inspections of the pipeline and data documentation for the inspected pipeline submitted by the operating organization.

6.6.2.2 During data verification of differences in the location parameters of the defects and peculiarities of the pipeline identified during the current survey with data from previous inspections and documentation for pipeline must not go beyond the allowable error and probability of detection.

6.6.2.3 if the analysis data of VIP are not supported by the results of previous inspections of the pipeline and data documentation for the inspected pipeline or values discrepancy in the location and parameters of defects is beyond the allowable error and probability of detection, it is necessary to conduct additional research in order to establish the reasons for the discrepancies. If the cause of this discrepancy is not installed, it is necessary to conduct DDK.

6.6.2.4 Data of VIP, confirmed by DDK results are considered verified if the differences in the location parameters of the defects and peculiarities of the pipeline on confirm data and DDK do not go beyond the allowable error and probability of detection.

6.6.2.5 If the VIP has not been verified for reasons not related to lack of operating organization the documentation for the pipeline and the possibility of the DDK, by technical diagnosing is analyzing and identifying the causes of data discrepancies VIP and DDK. After establishing the reasons for the operating organization decides on the acceptance of VIP.

7 External diagnosis

7.1 External diagnostics by methods of nondestructive testing

7.1.1 Acoustic emission monitoring

7.1.1.1 the Main purpose of the implementation of the AEC is the detection, location and monitoring of acoustic emission sources caused by discontinuities on the surface or in the volume of pipe wall, welds, and structural elements.

7.1.1.2 AEC is carried out in accordance with GOST 20415. Surveys of ECA are subject to the pipelines, which because of their structural parameters do not conduct foreign trade activities, and areas with lack of diagnostic information on the results of VTD.

7.1.2 Visual-measuring control

7.1.2.1 VIC is carried out in order to identify deviant connecting elements, unacceptable visible defects or indirect evidence of defects and failures (leaks, smells or «sweating» of metal protrusions on the outer surface of pipelines of liquid droplets).

7.1.2.2 VIC carried out in accordance with RD 03−606−03 [1] and performed on all pipelines both independently and as a complement to other NDT methods.

7.1.2.3 VIC includes a viewing surface of the pipe at a distance of not more than 0.6 m and an angle of at least 30°.

7.1.2.4 In VIC can be used a mirror and magnifying glass. Requirements for the ambient light control — according to GOST 23479.

7.1.3 Ultrasonic testing and ultrasonic thickness measurement

7.1.3.1 ultrasonic testing is carried out in order to control the ring (circuit) of welds, seams, flap transitions and segmented bends and tees nezapadnogo of manufacture, as well as to control the wall thickness of the pipe. UT and UT is carried out in accordance with GOST 14782, and ultrasonic flaw detection techniques developed for a specific type of used welding equipment.

7.1.3.2 in the study of circular welds should be checked adjacent longitudinal and spiral seams for not less than 250 mm.

7.1.4 Magnetic particle inspection and liquid penetrant inspection

7.1.4.1 MK is carried out in accordance with GOST 21105. In this case by detecting magnetic stray fields that occur near the defects after the magnetization of the test object, detecting surface and subsurface defects of metal (cracks, sunsets, inclusions, delaminations).

7.1.4.2 liquid penetrant inspection performed in accordance with GOST 18442. Thus due to the penetration of the tracer fluids in the cavity surface and through the discontinuities of the metal object, and registering the formed display traces of a visual method to identify surface discontinuities (cracks, sunsets, delamination).

If you cannot provide required by GOST 18442 surface of the test part, the capillary need to be replaced by MK.

7.2 Additional defectoscopy

7.2.1 Opening and DDK pipelines is carried out in order to confirm and clarify the type and parameters of the defects detected according to the results of VTD, AEC and ED.

7.2.2 Specialist conducting the DDK for the objective assessment of the results and zones of control should be provided with complete information about all defects that are on the study section.

7.2.3 the sequence of the DDK:

— preparatory work;

— VIC, which task is to identify in the area of control of surface defects (scratches, scores, cracks of all kinds, corrosion), including not identified in ITD, and measurement of identified defects;

— identification of defects, including internal and measurement (clarification) their parameters, other NDT methods (ultrasonic testing, UT, MK, capillary control).

7.3 Determination of planned-high-altitude position and depth of pipeline

7.3.1 Determination of planned-high-altitude position and the depth of the pipeline is carried out in order to detect deviations of the depth of the pipeline axis from the design values and measure the horizontal displacements of the pipeline in operation.

7.3.2 Determination of planned-high-altitude position and the depth of the pipeline is carried out in accordance with the requirements of SP 11−104−97 [2].

8 Electrometric diagnosis

8.1 preparations for the electrometric diagnosis

ED used on the pipelines of underground gasket. To conduct ED pipeline needs to be determined category corrosion risk, based on the project documentation, operational documentation, as well as the results of previous technical diagnostics of the pipelines. The category of sections on corrosion risk is determined according to GOST R 51164.

8.2 the Volume and scope of work for the electrometric diagnosis

8.2.1 the Volume and scope of work for the ED section of the pipeline is determined in TK and may include:

— study and analysis of statistical data on the corrosion condition of the inspected pipeline section;

— test to evaluate the corrosion condition of the pipeline;

— a survey to assess the insulation condition of the pipeline;

— the health check on insulating joints;

— definition of a technical condition of means ECP (ukz, UDZ, PDO) and their means of control;

— to determine the effect of ol 110 kV and above in places of their intersection and convergence with MN (optp) and 10 kV cables in places of their intersection with MN (optp);

— to determine the effect on ECP protection grounding equipment MN (optp);

— determination of the effectiveness of ECP;

— determination of corrosion aggressiveness of soil;

the impact of stray currents from sources of AC and DC currents on MN (mnpp) in accordance with the requirements of GOST 9.602;

— identification of possible harmful effects of cathodic protection on adjacent and related facilities.

8.2.2 In the case of detection according to the results of electrometric measurements on LCH MN (optp) reduce the insulation resistance below the values specified in GOST R 51164 used on the piping insulation type set place of damage to the protective coating seeker damage the insulation, conduct DDK wall of the pipe.

8.2.3 data ED can be confirmed by the results of VTD.

9 presentation of results of technical diagnostics

9.1 requirements for the content

9.1.1 requirements for the contents of reporting documentation of the technical diagnosis of the operating organization outlines in the TOR to carry out works on technical diagnosis.

9.1.2 Reporting documentation technical diagnostics must include:

technical specifications of the diagnostic equipment;

the parameters of the pipeline;

— permits the contractor’s technical diagnosing, confirming the right of work;

— documents (statements, control sheets), issued in the process of carrying out diagnostic work, including the preparation of piping and diagnostic equipment;

— information about the location of the marker points;

lists of constructive elements of the pipeline;

— lists of the revealed defects and peculiarities of the pipeline;

— the results of the data verification;

— the results of the analysis of the obtained data;

the results of calculations on strength and durability;

information about the crash diagnostic equipment, violation of technology of preparation and conduct of diagnostic work, as well as any deviations of the order of the diagnostic work of the established normative document contractor’s technical diagnosing and/or operating organization.

9.2 design Requirements

9.2.1 the results of technical diagnosis of issue reporting documentation in accordance with the requirements of the TOR (contract for the technical diagnostics).

9.2.2 documentation for technical diagnosis are included in the composition of the Executive documentation for finished construction of the pipeline.

9.2.3 Storage of the accounting documentation is subject to the requirements of GOST 2.501:

— all the records accepted for storage, is logged in the inventory book;

— each report must be assigned a unique inventory number.

9.2.4 report documents the results of technical diagnostics store:

on paper — one copy to the organization that operates the pipeline, and the contractor technical diagnostics;

— in electronic form (CD-ROM, CD-ROM, status of «read») — one copy from the organization that operates the pipeline, and the contractor’s technical diagnosis.

9.2.5 storage Period of reporting documents on the results of technical diagnostics of MN (optp):

— on paper — before depositing of the next (ordinary or extraordinary), technical diagnostics of the pipeline, but not less than 12 years;

— in electronic form (CD-ROM CD-ROM status «for reading») until the conclusion of object from operation.

9.2.6 the Destruction of reporting documentation, made in paper, is performed on the basis of the order in which is stored accounting documentation.

9.2.7 Initial results of technical diagnosing of MN (optp) is stored electronically by the contractor of technical diagnostics to the conclusion of object from operation.

Bibliography