Schemes of incoming and operational quality control of construction and installation works. Schemes of incoming and operational quality control of construction and installation works Scheme of operational quality control of installation works

11.9.1 During production processes and operations, operational controls are carried out in order to identify defects that may be hidden if the process or operation continues, and to take measures to prevent and eliminate these defects.

11.9.2 With operational control, the person carrying out construction checks:

Compliance of the sequence and composition of the technological operations performed with the technological and regulatory documentation applicable to these technological operations;

Compliance with technological regimes established by technological maps and regulations;

Compliance of quality indicators of operations and their results with the requirements of design and technological documentation, as well as regulatory documentation applicable to these technological operations.

11.9.2 During the construction process, an assessment of the work performed, the results of which affect safety, must be carried out object, but in accordance with the adopted technology become unavailable for control after the start of subsequent work, as well as completed building structures and plots utility networks, the elimination of defects identified by inspection is impossible without dismantling or damaging subsequent structures and sections of utility networks. Representatives of the relevant state supervision bodies, designer’s supervision, as well as, if necessary, independent experts may participate in these control procedures. The contractor notifies the other participants of the timing of these procedures no later than three working days in advance.

11.9.3 The results of acceptance of work hidden by subsequent work, in accordance with the requirements of design and regulatory documentation, are documented in certificates of inspection of hidden work ( Appendix M ). The developer (customer) may require a re-inspection after eliminating the identified defects.

11.9.4 To the procedure for assessing the conformity of individual structures, tiers of structures (floors), the work performer must submit inspection reports of all hidden works included in these structures, geodetic as-built diagrams, as well as test reports for structures in cases provided for in the design documentation and (or) construction contract. The developer (customer) can check the accuracy of the as-built geodetic schemes presented by the contractor. For this purpose, the performer of the work must preserve the alignment axes and installation guidelines fixed in kind until the completion of acceptance.

The results of acceptance of individual structures must be documented in acceptance certificates for critical structures ( Appendix H ).

11.9.5 Testing of sections of utility networks and installed engineering equipment are carried out in accordance with the requirements of the relevant regulatory documents and are documented in acceptance certificates for critical structures (Appendix H).

11.9.6 If defects in work, structures, or sections of utility networks are discovered as a result of stage-by-stage acceptance, the corresponding acts must be drawn up only after the identified defects have been eliminated.

In cases where subsequent work must begin after a break of more than 6 months from the completion of phased acceptance, before resuming work, these procedures should be repeated with the execution of the relevant acts.

11.9.7 Places for performing control operations, their frequency, performers, methods and measuring instruments, forms for recording results, the procedure for making decisions when identifying non-compliance with established requirements must comply with the requirements of design, technological and regulatory documentation.

11.9.8 The person carrying out the construction appoints with his administrative documents the responsible executors for the implementation operational control, documenting its results and eliminating defects identified by control.

The results of operational control must be documented in special work logs.

Part IV, issue 2

HEATING NETWORK

TESTING AND WASHING OF HEAT NETWORKS PIPELINES

Technical requirements

SNiP 12-01-2004 Organization of construction.

SNiP 3.05.03-85 Heating network.

SNiP 12-04-2002 Labor safety in construction. Part 2. Construction production.

PB 10-573-03 Rules for design and safe operation steam pipelines and hot water.

SP 41-105-2002 Design and construction of ductless heating networks from steel pipes with industrial thermal insulation made of polyurethane foam in a polyethylene shell.

SP 41-106-2004 Design and installation of underground heating and hot water supply pipelines from asbestos-cement pipes.

SP 41-107-2004 Design and installation of underground hot water supply pipelines from PE-S pipes with thermal insulation from polyurethane foam in a polyethylene shell.

General provisions

Testing and flushing (purging) of heating network pipelines must be carried out in accordance with the requirements of the project, SNiP 3.05.03-85, SNiP 12-04-2002, PB 10-573-03, SP 41-105-2002, SP 41-106- 2004, SP 41-107-2004, PPR, technological maps, operational quality control schemes and other technological documentation approved in in the prescribed manner and operating in the quality management system.

The safety of pipeline testing must be ensured based on the implementation of the following labor protection decisions contained in the organizational and technological documentation (POS, PPR, etc.):

Determination of the test program;

Safety measures when performing work in trenches, wells and at heights;

Special safety measures when conducting pneumatic testing of pipelines.

Pipeline tests must be carried out under the direct supervision of a specially designated person from among the specialists of the installation organization.

Before testing you must:

The work manager should familiarize the personnel participating in the tests with the procedure for carrying out the work and measures for their safe implementation;

Warn workers in adjacent areas about the time of testing;

Check instrumentation and plugs;

Fence the testing area and mark it with appropriate signs;

Check that there are no pipes inside foreign objects;

Mark temporary plugs, hatches and flange connections with warning signs;

Install posts at the rate of one post within sight of another, but at least every 200 m from each other, to warn about the danger zone;

Determine the places and conditions for the safe stay of persons involved in testing;

Provide workplace illumination of at least 50 lux;

Determine the persons responsible for implementing the safety measures provided for in the test program.

During the event pneumatic tests pipelines located in trenches, a danger zone must be established, the value of which is indicated in the table below.

The boundaries of the danger zone must be marked with signal barriers or safety signs.

The presence of persons in the danger zone during the period of air injection into the pipeline and when the pipeline is kept under pressure during strength testing is not allowed.

It is not allowed to carry out pneumatic tests of pipelines on overpasses, in channels and trays where existing pipelines are laid.

Work procedure

The test is allowed to begin only after timely warning of surrounding persons and obtaining permission from the test director.

When pneumatically testing pipelines, safety valves must be adjusted to the appropriate pressure.

Connection and disconnection of lines supplying air from the compressor to the pipeline being tested is permitted only after the air supply has been stopped and the pressure has been reduced to atmospheric pressure.

Tapping welds directly during testing of pipelines is not allowed.

Inspection of pipelines is permitted only after pressure reduction, MPa:

up to 0.3 - in steel and plastic pipelines;

up to 0.1 - in cast iron and asbestos-cement pipelines.

Defects in pipelines should be eliminated after reducing the pressure to atmospheric pressure.

When purging pipelines after testing, there must be installed in front of open hatches and fittings safety fences(screens).

Requirements SNiP 3.05.03-85

After completion of construction and installation work, heating network pipelines must be subjected to final (acceptance) tests for strength and tightness. In addition, condensate pipelines and pipelines of water heating networks must be flushed, steam pipelines must be purged with steam, and pipelines of water heating networks must be open system heating and hot water supply networks - washed and disinfected.

Pipelines of heating networks laid without ducts and in non-passable channels are also subject to preliminary tests for strength and tightness during construction and installation work.

Preliminary tests of pipelines should be carried out before installing gland (bellows) compensators, sectional valves, closing channels and backfilling of channelless pipelines and channels.

Preliminary tests of pipelines for strength and tightness should be performed, as a rule, hydraulically.

At negative outside temperatures and the impossibility of heating water, as well as in the absence of water, it is allowed, in accordance with the PPR, to perform preliminary tests using a pneumatic method.

It is not allowed to carry out pneumatic tests of pipelines laid in the same channel (section) or in the same trench with existing engineering communications.

Pipelines of water heating networks should be tested at a pressure equal to 1.25 working, but not less than 1.6 MPa (16 kgf/cm), steam pipelines, condensate pipelines and hot water supply networks - at a pressure equal to 1.25 working, unless other requirements are justified by the design (working project).

Before performing strength and tightness tests, you must:

Carry out quality control of welded joints of pipelines and correction of detected defects;

Disconnect the tested pipelines from the existing ones and from the first one using plugs. shut-off valves installed in a building (structure);

Install plugs at the ends of the tested pipelines and instead of stuffing box (bellows) compensators, sectional valves - during preliminary tests;

Provide access throughout the entire length of the pipelines being tested for their external inspection and inspection of welds during the tests;

Open the valves and bypass lines completely.

The use of shut-off valves to disconnect the pipelines under test is not permitted.

Simultaneous preliminary tests of several pipelines for strength and tightness are allowed to be carried out in cases justified by the PPR.

Pressure measurements when testing pipelines for strength and tightness should be made using two duly certified (one control) spring pressure gauges of class not lower than 1.5 with a body diameter of at least 160 mm and a scale with nominal pressure 4/3 of what is measured.

Testing of pipelines for strength and tightness (density), their purging, washing, disinfection must be carried out according to technological schemes(agreed with operating organizations) regulating the technology and safety precautions for carrying out work (including the boundaries of security zones).

Reports of the established form should be drawn up on the results of tests of pipelines for strength and tightness, as well as on their flushing (purging).

SCHEMES OF INPUT AND OPERATIONAL QUALITY CONTROL OF CONSTRUCTION AND INSTALLATION WORKS

Part IV, issue 2

HEATING NETWORK

GEODETIC WORK

GEODETIC WORK WHEN LAYING PIPELINES

TECHNICAL REQUIREMENTS

SNiP 12-01-2004 Organization of construction.

SNiP 11-02-96. Engineering survey for construction. Basic provisions.

SP 11-104-97 Engineering and geodetic surveys for construction.

GOST R 51872-2002 Geodetic executive documentation. Execution rules.

SNiP 3.01.03-84 Geodetic work in construction.

A manual for geodetic work in construction (to SNiP 3.01.03-84).

Geodetic work when laying pipelines is mandatory integral part technologies for the production of pipeline laying works (self-control, operational control and acceptance control).

Geodetic control means, along with mechanical ones, provide the ability to lay pipelines in the design position (self-control), provide the ability to monitor the compliance of the position of pipelines and its elements with design and regulatory requirements both during installation (operational control) and upon its completion (acceptance control by executive geodetic surveying the planned and altitude position of the laid pipeline).

Before starting work on laying the pipeline, it is necessary to check:

Availability of PPGR, technological map and SOKK or as part of the PPR technological documentation for carrying out geodetic work when laying pipelines, containing methods for performing detailed alignment work, a diagram of the location of signs, marks and landmarks, the order and volume of work performed;

Availability of a road layout certificate; the presence of an as-built drawing based on the results of staking out and fixing the places of connections and connections of communications, angles of rotation of the pipeline, wells, chambers, channels, tunnels, intersections of the pipeline with other networks;

Safety of signs of the external alignment network of the pipeline and axial signs, immutability of their position through repeated measurements of network elements; restoration of lost signs;

Availability of certificates of inspection of previously completed earthworks for the construction of trenches and pits, certificates of acceptance of trenches and pits;

Availability of an as-built drawing (scheme) based on the results of a geodetic check of the compliance of the planned and altitude positions of trenches and pits with the design ones; the presence in the drawing of confirmation by the customer of the correctness of the preparation and compliance of the as-built drawing with nature;

Conducting training for workers in labor organization and methods for aligning pipes and other pipeline elements horizontally and vertically.

Geodetic work when laying pipelines is an integral part of the technological process of work. They must be carried out in accordance with the requirements of SNiP 3.01.03-84, PPR, PPGR, operational quality control schemes and other technological documentation of the quality management system operating in the enterprise.

Before starting work on laying pipelines, the position of the pipeline axis must be secured.

The axis of the route is projected into the trench with a theodolite or a plumb line from a tensioned wire between the pivot points of the axis or turning points.

Fixing the position of the axis of the route, especially wells, can be done using castings, arranged on straight sections of the route at a distance of 40-50 m from one another, as well as at turning points. For cast-offs ( edged boards, attached horizontally to the pillars above the trench, or inventory engineering cast-offs) take out and fix the axes between which the string is stretched. From the string, the axis is transferred by plumb lines to the bottom of the trench.

Laying out the design slope of the trench bottom after completing shortfalls and making up for overshoots and breaking out the bottom of pits for sealing pipeline joints can be done using permanent (fixed) and running sights, geometric leveling, optical levels and laser slope clamps. Marks of permanent (fixed) sights attached to inventory cast-offs, or nailed to a wooden cast-off, or installed on the edge of a trench, are made by a level taking into account the design slope of the trench..jpg" height="17"> - design slope of the trench, DIV_ADBLOCK866">

Laying out the height of the bottom of trenches, pits and pits and relocating the pipeline axis using fixed and moving sights

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1. Fixed cast-offs 2. Running sights 3. Fixed sights on the edge of the trench

When monitoring using the method of geometric leveling along the axis, every 15-20 m, stakes are driven in, placed at a convenient distance from the axis, they are leveled and on each mark the depth of the trench is written, calculated from the difference between the design mark and the mark of the peg. The depth of the trench is controlled by a rod with centimeter divisions, along which the clamp and slider are mixed. The clamp is fixed at a mark equal to the depth of the trench from the top cut of the peg.

Automatic regulation of trench depth can be performed using various slope sensors installed on the earthmoving machine (pendulum, electronic level, gyroscope) or using slope sensors installed parallel to the axis of the route separately from the earthmoving machine (string, laser light beam).

Laying out a well pit includes securing the center of the well, installing a cast-off fixed at a distance of 0.6-0.7 m from the edge of the trench, and transferring marks and axes to the cast-off.

Laying pipes in height can be carried out:

When building on a prepared foundation (by beacons) according to the level;

Schemes of incoming and operational quality control of construction and installation works. Part I, issue 2. Installation of prefabricated reinforced concrete structures of residential buildings, installation of light enclosing structures. Trust "Orgtekhstroy-11" 2001
Schemes for incoming and operational quality control of construction and installation works are drawn up in accordance with the requirements of SNiP 3.01.01-85* “Organization construction production».
Schemes of incoming and operational control are intended for line engineering and technical workers, foremen and workers, employees of the quality control department of construction and installation work, workers of laboratory, geodetic and welding services who carry out self-control, incoming, operational and acceptance quality control of construction and installation work.
Schemes can be used:
- employees of services for the preparation of construction production as standard ones for their inclusion in projects for construction and installation works or the development on their basis of schemes that reflect the specifics of specific projects of buildings and structures;
- employees of personnel training services as teaching aid in training, retraining and advanced training of workers and engineers;
- teaching staff of higher and secondary technical educational institutions in the training of engineering and technical workers construction profile;
- heads of departments, main functional departments and services, as well as management of construction organizations when checking the knowledge of projects and regulatory requirements for the quality of construction and installation work among line personnel, as well as when carrying out inspection control of the quality of construction and installation work;
- field supervision workers design organizations;
- employees of the customer’s technical supervision who accept the work performed, employees of architectural and construction supervision services, federal and regional centers for licensing construction activities and other organizations supervising construction.

Explanatory note.
Installation of reinforced concrete structures of residential buildings.
Off-site and on-site preparatory work.
Construction of a geodetic alignment basis for construction.
Construction of ground rail crane tracks.
- are common technical requirements.
- geodetic work during the construction of ground rail crane tracks.
- requirements for operation.
Incoming quality control of prefabricated concrete and reinforced concrete products and structures.
- GOST 13015.0-83* Prefabricated concrete and reinforced concrete structures and products. General technical requirements.
- GOST 13015.2-81* Prefabricated concrete and reinforced concrete structures and products. Marking.
- GOST 13015.3-81* Prefabricated concrete and reinforced concrete structures and products. Quality document.
- GOST 13015.4-84 Prefabricated concrete and reinforced concrete structures and products. Transportation and storage rules.
- GOST 11024-84* External concrete and reinforced concrete wall panels for residential and public buildings. Specifications.
- GOST 12504-80* Internal concrete and reinforced concrete wall panels for residential and public buildings. General technical conditions.
- GOST 26434-85** Reinforced concrete floor slabs for residential buildings. Types and basic parameters.
- GOST 9561-91 Reinforced concrete hollow-core floor slabs for buildings and structures. Technical conditions.
- GOST 12767-94 Solid reinforced concrete floor slabs for large-panel buildings. General technical conditions.
- GOST 9574-90 Gypsum concrete panels for partitions. Technical conditions.
- GOST 25098-87 Reinforced concrete partition panels for buildings of industrial and agricultural enterprises. Technical conditions.
- GOST 17079-88 Reinforced concrete ventilation blocks. Technical conditions.
- GOST 17538-82* Reinforced concrete structures and products for elevator shafts of residential buildings. Technical conditions.
- GOST 18048-80* Reinforced concrete sanitary cabins. Technical conditions.
- GOST 9818-85* Reinforced concrete flights and landings of stairs. Technical conditions.
Geodetic work on the original horizon.
Geodetic work on the installation horizon.
Installation of external wall panels.
Installation of internal wall panels.
Installation of floor slabs.
Assemblies of external walls made of single-layer lightweight concrete panels according to series 2.130-1 issue 26.
Installation of ventilation units.
Instructions for the installation of volumetric blocks of elevator shafts from the series 1.189.1-11 Reinforced concrete structures for passenger elevator shafts of residential buildings with a floor height of 3.0 m (issue 1 and 2)
Installation of volumetric blocks of elevator shafts.
Installation of sanitary cabins.
Installation of staircases and flights.
Installation of partition panels.
Mounting units for gypsum concrete partitions according to series 2.130-1 issue 27.
Mounting units reinforced concrete partitions according to series 2.130-1 issue 27.
Sealing of joints and seams.
Sealing of joints of large-panel residential buildings.
Insulation of joints between window blocks and walls according to series 1.132.1-17.
Anti-corrosion protection of embedded and connecting products.
Installation of partitions from plasterboard sheets and panels.
Series 1.131.9-24 “Partitions made of plasterboard sheets for residential buildings”, issue 3 “Partitions element-by-element assembly on metal frame with sound insulation from mineral wool slabs, mineral wool pierced mats with details for laying electrical communications."
Nodes plasterboard partitions according to series 1.131.9-24 issue. 3

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