1 OPEN JOINT STOCK COMPANY "MOSVODOKANAL" TECHNICAL REQUIREMENTS of JSC "Mosvodokanal" for the design of water supply and sanitation facilities in Moscow during new construction and reconstruction Moscow, 2014 - 1 -
3 I. CONTENTS General requirements to the design of pipelines for water supply and sanitation... Pp. II. Water Supply Composition project documentation Requirements for project documentation Special conditions for design Additional conditions for design Structures of wells and chambers Construction of foundations for pipelines. 17 III. 3rd lift water pumping stations Basic requirements for design solutions Architectural and planning solutions Technological and technical solutions, equipment, pipelines. Constructive decisions, underground and aboveground parts of buildings, load-bearing and enclosing structures Electrical requirements Automation and dispatching Engineering equipment, networks and systems of buildings, structures External engineering support Engineering and technical strength Environmental protection 30 IV. Gravity and pressure sewerage Structure of project documentation Requirements for project documentation Special conditions for design Additional conditions for design
4 5. Structures of wells and chambers Shut-off valves on gravity and pressure pipelines. Construction of foundations for gravity and pressure pipelines V. Sewage pumping stations and APP Basic requirements for design solutions Architectural and planning solutions Technological and technical solutions, equipment, pipelines. Structural solutions, underground and above-ground parts of buildings, load-bearing and enclosing structures Electrical requirements Automation and dispatching Engineering equipment, networks and systems of buildings, structures External engineering support Environmental protection Emergency-regulating reservoir (APP) VI. one. Technical requirements to measuring instruments and cold water metering units and Wastewater General requirements for the installation of cold water metering units and the choice of water meters 2. Requirements for vane water meters Requirements for turbine water meters Requirements for ultrasonic flow meters General requirements for the installation of wastewater metering units VII. Requirements for the design of objects of control and management on water supply networks. Data on instruments, automation equipment and information transfer General requirements for instruments and automation equipment Information transfer
5 3. Flow meters Pressure measuring devices Water quality analyzers VIII. Programmable logic controllers in control circuits of safety and control valves Electrical protection requirements in the design of water supply and sanitation facilities IX. Energy saving requirements X. List of normative and technical documentation Appendix 1: Technical requirements for the use of pipes and materials for the construction and reconstruction of drinking water supply pipelines and sewerage facilities of Mosvodokanal OJSC Appendix 2: Technical requirements for butterfly valves used at JSC "Mosvodokanal" facilities Mosvodokanal" Appendix 3: Technical requirements for gate (knife) valves used at the facilities of Mosvodokanal OJSC Appendix 4: Specifications for wedge-type valves used at the facilities of Mosvodokanal OJSC Appendix 5: Technical requirements for hardware products made of stainless steel 12X18H10T Appendix 6: Technical requirements for hardware products with thermal diffusion zinc coating (TDZ) Appendix 6: Specifications for hardware products with galvanized zinc coating Appendix 8: Technical requirements for fire hydrants Annex 10: Technical requirements for non-return valves Appendix 11: Technical requirements for the equipment of the automated pressure control system of the urban water supply network Appendix 12: Typical terms of reference for the development of a project for the construction of a PS with low-voltage equipment, with a capacity of up to 20 thousand m 3 / day. Table of controlled signals at the pumping station and displayed on the workstation of the SCC SNS. Annex 13: Typical terms of reference for the development of a pro- 5
6 projects for the construction of a sewage pumping station with low-voltage equipment, with a capacity of up to 5.0 thousand m 3 / day. Table of controlled signals at the pumping station and displayed on the AWP DP SENS. Annex 14: Technical requirements for vane water meters. Annex 15: Technical requirements for turbine water meters. 6
7 I. GENERAL REQUIREMENTS FOR THE DESIGN OF PIPELINES AND WATER SUPPLY AND DISCHARGE FACILITIES 1. These requirements apply to the development of technical solutions in the design of water supply and sanitation facilities. 2. Design solutions are developed taking into account the requirements of regulatory and technical documents (Decrees of the Government of Moscow, GOST, SP, SNiP, MGSN, etc.), approved standard albums and the requirements of the operating organization Mosvodokanal OJSC. 3. Design solutions are carried out in full compliance with the issued technical specifications (TS) and design assignments (TOR). 4. In the event that the TU (TOR) provides for the stages of construction, it is allowed to carry out projects in stages. 5. When designing water supply and sewerage for complex buildings or facilities with high water consumption and large volumes of wastewater, as well as transport routes, Schemes are developed, on the basis of which Mosvodokanal OJSC issues technical specifications. 6. For consideration at JSC "Mosvodokanal" project documentation is accepted in the amount of 2 copies (water supply), 2 copies (electrical protection), 3 copies (gravity sewer), 4 copies (gravity sewer), approved by all performers indicated in the stamp of the project. 7
8 II. WATER SUPPLY 1. COMPOSITION OF PROJECT DOCUMENTATION Project documentation should include: 1.1. For highways and networks: - explanatory note (including the composition of the project); - engineering-geological conclusion; - geodetic plan M 1:500 (1:200) master plan of networks with landscaping elements; - situational plan M 1:2000 with the drawing of the designed structures; - detailing with specification; - longitudinal profile M 1:100 (vertical) / M 1:500 or 1:200 (horizontal) with a geological section; - structural drawings of individual chambers, wells, stops, etc. For inputs and on-site networks: - general data; - geodetic plan M 1:500 (1:200) master plan of networks with landscaping elements; - situational plan М 1:2000; - detailing with specification; - profile M 1:100 / M 1:500 (1:200); - plan of the premises, location and scheme of the water meter unit; - plan, diagram of the central heating station, ITP, UATP with the arrangement of water metering units; - structural drawings of individual wells, stops, etc. 2. REQUIREMENTS FOR PROJECT DOCUMENTATION 2.1. The "general data" sheet (for house inputs) should include: - a list of the main sets of working drawings; - statement of working drawings of the main set; - a list of attached and reference documents; - symbols adopted on the master plan; - section "general instructions"; - engineering-geological conclusion; - the "water supply" section, which indicates: - TU, according to which the project was released; - actual and projected pressure; - inlet diameter, mechanical type water meter caliber; eight
9 - a list of existing and planned buildings, powered from the input, indicating the loads (a table of the main indicators, including the cost of fire fighting and fire fighting); - a list of pumping equipment for domestic and drinking and fire needs; - balance of water consumption and water disposal for non-residential premises; - special construction conditions; - provision of external fire extinguishing, indicating the number of fire hydrants and consumption; - conditions of protection against electrocorrosion; - situational plan M 1:2000 with drawing of the designed structures. Situational plan On the situational plan, indicate: - existing and planned water supply system, indicating the diameter, material; - buildings existing and attached, indicating their underground part, house numbers, well numbers, if necessary, numbers of d / inputs; - stationing, numbers of rotation angles; - names of streets, passages Consolidated geodetic plan The geodetic plan must be submitted with the stamp of Mosgorgeotrest (MGGT) On the geodetic plan: - summary plan of networks; - the projected city water supply system stands out in color; - buildings existing and connected to the water supply network, indicating the number of storeys, the underground part of the designed structures, house numbers and numbers of d / inputs; - underground engineering communications at the intersection with the city water supply; - picketing, incl. at the corners of the turn; - binding of new wells (for inputs) to existing wells with indication of distances; - chainage, diameter, material and method of laying or reconstructing a water pipeline Longitudinal profile The "longitudinal profile" sheet should include: 9
10 - existing (black) and planning (red) ground marks in meters, up to the second decimal place; - geological section indicating the calculated soil resistance, groundwater level and conclusion on laying; - marks of the bottom of the pipes in meters, up to the second decimal place; - pipe laying depth in meters, up to the second decimal place; - bias, up to the second decimal place; - marks of the intersected communications in meters, to the second decimal place; - length, up to the second decimal place; - material, pipe diameter in mm; - picketage, angles of rotation; - type of foundation for the pipeline; - laying method; - intersected external buildings Detailing The detailing sheet should show: - a pipeline diagram with wells and chambers being designed and subject to liquidation; - stationing, numbers of designed wells and chambers, rotation angles; - length, diameter, pipe material, method of laying or reconstruction of the pipeline; - types of wells and stops, with reference to standard albums; if the wells and stops are individual, it is necessary to give a link to the structural drawing attached to the project; - dimensions of chambers, wells; - binding of pipes, flanges, fittings, etc. to the internal surfaces of wells and chambers indicating distances, taking into account the requirements of regulatory documentation; - transverse and longitudinal sections of cases, reinforced concrete clips, drops, etc.; - bypass diagram with drawings of fixed supports and stops; - a summary specification indicating the positions, names, symbols, units of measurement, quantity, material of pipes and fittings, type of shut-off and control valves, diameter, nominal pressure, construction length, height of fire hydrants, etc. with reference to regulatory documents (TU, GOST, etc.). ten
11 2.6. Structural drawings of wells and chambers The drawing includes: - plan and section of a well or chamber; - placement of viewing mouths; - constructive dimensions of the well or chamber; - reinforcement of reinforced concrete structures; - installation of shut-off valves; - marks of pipes; - volumes of works and materials in tabular form. - scheme of the water measuring unit, if necessary, axonometry; - the diagram should indicate all shut-off valves, indicating the diameter and type, water-measuring insert, stops, dimensions of all fittings; - caliber and type of water meter; - pit, with dimensions; - emphasis, with the application of a structural drawing at the transition point of the bell flange. 3. SPECIAL DESIGN CONDITIONS When designing, it is necessary to provide for: 3.1. Driveways along the routes of water conduits and entrances to chambers and wells The route of the water supply system outside the carriageways of streets and roads , in agreement with JSC "Mosvodokanal" and subscribers, without disrupting the water supply of the remaining consumers Arrangement of individual inputs to each building water inlets after the water metering unit in order to prevent emergencies on the city water supply networks. Checking the diameter and number of input threads, the diameter of the plant metering network, pumps and water meters by hydraulic calculation. eleven
12 3.9. Laying a water pipeline without transit through buildings When justifying the use of storage tanks in the internal water supply systems of buildings in civil and industrial construction Insulation of pipelines and valves in places of possible freezing Selection of pipe material and work method in accordance with approved technical requirements for the use of pipes and materials for construction and reconstruction of pipelines for drinking water supply at the facilities of JSC "Mosvodokanal" (Appendix 1). At the design stage, depending on the laying conditions and the method of work, the material, pipe type (pipe wall thickness, standard dimensional ratio (SDR), ring stiffness (SN), the presence of an external and internal protective coating of the pipe) are selected, the issue of strengthening the pipe being laid with using a reinforced concrete clip or steel case. For all pipe materials, it is necessary to carry out a strength calculation for the effect of the internal pressure of the working medium, soil pressure, temporary loads, the own mass of pipes and the mass of the transported liquid, atmospheric pressure during the formation of vacuum and external hydrostatic pressure of groundwater. All materials used for laying water supply networks (pipes, thin-walled liners, hoses and internal spray coatings) must undergo additional tests for the general toxic effect of constituent components that can diffuse into water in concentrations hazardous to public health and lead to allergenic, skin-irritating , mutagenic and other negative effects on humans Elimination of parallel networks Installation of compensating devices in wells and chambers for pipe diameters DN mm When installed in wells and chambers, the use of adapters on a steel pipeline designed for steel pipes inserts for installation and dismantling of shut-off valves, as well as manholes for internal maintenance of the pipeline during operation 12
13 winding steel grade 12X18H10T or carbon steel with thermal diffusion zinc coating (TDZ) (Appendix 5, 6). Carbon steel hardware with galvanized galvanization may be used for pipe diameters less than 50 mm (Appendix 7) Use of cast fittings from ductile iron with an internal cement-sand coating. The use of welded fittings made of ductile iron is allowed with justification in the absence of a similar product in a cast version in the range of manufacturers or in case of misalignment of pipelines. Welded fittings must have an internal cement-sand and external anti-corrosion coating (zinc-rich paint and bitumen). Welded fittings must pass 100% control on a hydraulic stand with a test pressure for strength Ppr = 1.5 PN. Fittings must be clearly identified for each product. Specifications for the manufacture of welded fittings must be agreed with JSC "Mosvodokanal" in the prescribed manner Installation of safety and control valves on water mains and networks, as well as measuring instruments for measuring water flow and pressure with remote transmission of information Application of shut-off and control valves and fire hydrants corresponding to the approved "Technical requirements" (Appendix 2,4,8) Use of shut-off valves and fire hydrants in a wellless installation option (BKZ). The distance between the BKZ should be no more than 200 m for the possibility of conducting TV-diagnostics. Provide for flange and wafer connection of butterfly valves with diameters from DN100 mm to DN400 mm, flange connection for diameters over DN500 mm. When installing wafer type butterfly valves with a body seal, use "collar" flanges manufactured in accordance with GOST. If necessary, for the construction period, a bypass device with the installation of devices to provide external fire extinguishing. When installing bypasses made of steel pipes for a period of not more than 1 year, it is allowed not to provide for an external protective coating of a very reinforced type and an internal CPP. The applied external anticorrosive paint and varnish coating must have a permit for use in drinking water supply systems Application of telediagnostics of pipelines DN= (visual inspection at DN=900 and above) to determine the quality of the internal surface of pipelines and their sanitary condition before flushing during new construction and reconstruction. 13
14 3.24. In front of the control unit for pumping equipment of internal automatic fire extinguishing (sprinkler and deluge), a water intake device for a sanitary appliance as buffer zone, with the installation of a water meter When designing wheel washing points, a water recycling device and coordination of treatment plant projects with Rospotrebnadzor, Mosvodostok and Mosvodokanal. 4. ADDITIONAL DESIGN CONDITIONS 4.1. If possible, provide for the minimum depth of the pipeline, taking into account the depth of freezing of the soil and structural parts of wells and chambers installation of fittings and fittings for flushing with a discharge device into the drain directly from the distribution network. In the absence of a drain, provide a solution to ensure the removal of water from technical flushing In sections of pipelines with low speeds (determined at the stage of engineering schemes or issued specifications) it is necessary to provide flushing coils with a device for discharge into the drain directly from the distribution network. In the absence of a drain, provide a solution to ensure the drainage of water from technical flushing , as well as the costs for the fire extinguishing needs of the facility in accordance with the joint venture Develop schemes taking into account ensuring the sanitary condition of pipelines When calculating pipelines for throughput, apply water velocity V = 1-1.5 m / s When installing bypasses, provide for thermal insulation in accordance with thermal engineering calculation , and in winter, electric heating (lack of thermal insulation in the warm period is justified). Dismantling the bypass 14
15 eliminate the pipeline section at the bypass tie-in place with subsequent insertion of the coil Develop a schematic diagram of pipeline flushing with determination of the scope of construction and installation work and inclusion in the estimate calculation of the total costs for the cost of flushing arrangement and water consumption during tie-ins and flushes Coordinate the flushing scheme and PPR with all interested organizations according to SNiP *; When arranging vertical lifting and lowering of pipelines, it is necessary to provide for: - on the roadway - a device for lifting and lowering in the well; - on the lawn - behind the wall of the well When arranging drops in the ground, provide for angles of 30 and 45 of the axial deviation of the pipeline siphon route, as a rule, to be made of 2 threads, steel pipes with a wall thickness of at least 12 mm, internal CPP and external insulation of very reinforced type made of extruded polyethylene in accordance with GOST For a siphon with a diameter of up to 500 mm, steel grade St20, with a diameter of 500 mm or more, steel grade 17G1S fistula damage, use the pipe wall thickness of the branch pipe on the air vent to be equal to the thickness of the main pipe. On the networks, provide for the arrangement of valves to ensure that no more than five fire hydrants are turned off. raster transition devices b-smooth end" on the water metering unit, provide a device for a typical or individual stop. 5. DESIGNS OF WELLS AND CHAMBERS 5.1. Wells and chambers on water supply networks should be installed at the points of connection of d / inputs, networks, installation of shut-off and control valves, fire hydrants, air vents, outlets, etc. Wells and chambers should be provided from prefabricated reinforced concrete elements or monolithic reinforced concrete Reinforced concrete rings of wells and necks during installation are connected - 15
16 between each other with metal H-shaped fasteners, which are then plastered. The necks of the wells for descending service personnel into the wells should be provided with a diameter of at least 0.7 m; to install plates and hatches with locking devices on the necks of the wells. floating" type supported on the roadway in urban areas with asphalt pavement (when installed on the roadway of urban highways, in parking lots, courtyards, sidewalks, footpaths); - with a body of a conventional type supported on the mouth of a well in urban areas without asphalt pavement, in areas covered with paving stones or paving slabs (when installed on the roadway, yard areas, in areas of footpaths, sidewalks, in the area of green spaces). - installation of base plates UOP-6 (with hatches made of gray cast iron) and individual hatches made of gray cast iron that do not meet the approved design requirements are not allowed; 5.6. The design of wells with hydrants should be provided with the use of 2-meter rings made of prefabricated reinforced concrete. The step overhang should be 12cm. The maximum height from the floor of wells and chambers to the first step is 500 mm. In the places where the pressure pipelines adjoin the wall of the chambers or the wall of the pumping station, sealing is provided with the installation of steel sleeves according to standard design albums. the need is determined depending on the type of valves) Above the shut-off valves, provide for the arrangement of holes in the ceilings and the installation of the necks of the wells to control the shut-off valves without lowering into the well. The minimum height of the working part of the wells should be 1.8 m. ,5 m provide for the installation of walking ladders from metal structures, as well as their protection against corrosion. 16
17 6. STRUCTURES OF BASES FOR PIPELINES 6.1. The bases for the designed pipelines should be taken based on the hydrogeological conditions, the pipes used, the acting loads, the depth of laying and other factors The areas of peaty soils located below the base of the pipelines are removed from the trench, and if it is impossible to extract, an estimated pile foundation is arranged under the pipeline Compaction of sandy soils in projects, take to a depth of no more than 1.0 meters, because otherwise, even with a compaction coefficient K = 0.95, the pipeline subsidence will exceed 0.05 m. time to avoid destruction of pipes due to heaving of soils. III. WATER PUMPING STATIONS OF THE 3RD LIFTING Projects of water pumping stations are developed according to the specifications of JSC "Mosvodokanal", the technological task and the design task (Appendix 12). When developing project documentation, it is necessary to be guided by federal laws, Decrees of the Government of the Russian Federation, Decrees of the Government of Moscow, regulatory documents (SNiP, SP, MGSN, RD, CO, GOST, SANPiN, Rules, Albums, etc.) Design is carried out according to an agreed task, which includes the following sections: 1. BASIC REQUIREMENTS TO PROJECT DECISIONS 1.1. Urban planning solutions, master plan Effective use site and its underground space Normative level of improvement, landscaping Arrangement of an access road, turnaround areas, fencing along the perimeter of the territory of the pumping station with means of technical reinforcement, with the restoration of a 5-meter zone outside the territory along the perimeter of the fence Diversion of surface runoff from the territory of the pumping station and from adjacent territories to it. 17
18 2. ARCHITECTURAL AND PLANNING DECISIONS (planning of premises, external and internal finishing) The project shall provide for: 2.1. Parameters of the premises of the building in accordance with their purpose External walls of the building with ventilated hinged facades, with a color exterior finish Pitched metal roof made of profiled galvanized material Windows plastic bags, with removable external grilles, lockable from the inside. The number of windows is minimal, taking into account the requirements for illumination industrial premises for engineering systems pump station, fire safety, served by incoming personnel Sanitary premises - for incoming maintenance and repair personnel One room for the electrical panel and control room The outer and inner surface of the walls of the underground part of the pumping station with reinforced, specially injected, penetrating waterproofing Finishing building structures inside the underground part of the pumping station, taking into account changes in temperature and humidity parameters; Tiling the walls of the underground part of the pumping station to a height of 2.0 m from the floor. 3. TECHNOLOGICAL AND TECHNICAL SOLUTIONS, EQUIPMENT, PIPING 3.1. For a pumping station, the I category of reliability of power supply according to the PUE should be taken. The choice of the type of pumps and the number of working units should be made on the basis of calculations of the joint operation of pumps, water conduits, networks, control tanks, daily and hourly water consumption schedules, fire extinguishing conditions, the order of putting the object into operation When choosing types of pumping units, it is necessary to ensure the minimum amount of excess pressure developed by pumps in all operating modes, through the use of control tanks, speed control, changing the number and types of pumps. eighteen
19 3.4. In pumping stations for a group of pumps of the same purpose, supplying water to the same network or conduits, the number of standby units should be taken in accordance with the SP. The number of pumping units should be at least two. combined high-pressure fire water pipelines or when only fire pumps are installed, one standby fire unit should be provided, regardless of the number of working units. axis of the pumps, take into account the permissible vacuum suction height (from the calculated minimum level water) or required by the manufacturer, the necessary backwater from the suction side, as well as pressure losses in the suction pipeline, temperature conditions and barometric pressure The floor elevation of the machine rooms of buried pumping stations should be determined based on the installation of pumps of greater capacity or dimensions The number of suction lines to the pumping station independently the number and groups of installed pumps must be at least two. When one line is switched off, the rest must be designed to pass the full design flow. The number of pressure lines from pumping stations must be at least two. also check the characteristics of the pumps without violating the requirements for the security of water supply. The pressure line of each pump must be equipped with shut-off valves and a check valve installed between the pump and the shut-off valves. When installing mounting inserts, they should be placed between the shut-off valve and the non-return valve. On the suction lines of each pump, shut-off valves should be installed at pumps located under the bay or connected to a common suction manifold. 19
20 3.14. The diameter of pipes, fittings and fittings should be taken on the basis of a feasibility study based on the speed of water movement. The dimensions of the machine room of a pumping station should be determined taking into account the following requirements: - 1m; - between pumps or electric motors and a wall in recessed rooms - 0.7 m, in others - 1 m, while the width of the passage on the side of the electric motor must be sufficient to dismantle the rotor; - between compressors or blowers - 1.5 m, between them and the wall - 1 m; - between fixed protruding parts of the equipment - 0.7 m; - in front of the electrical switchboard - 2m. Notes: 1. Passages around the equipment, regulated by the manufacturer, should be taken according to passport data. 2. For units with a discharge pipe diameter of up to 100 mm inclusive, the following is allowed: - installation of the units against a wall or on brackets; - installation of two units on the same foundation with a distance between the protruding parts of the units of at least 0.25 m with passages around the dual unit with a width of at least 0.7 m as a rule, it is necessary to take: - with a mass of cargo up to 5 tons - a hand-held hoist or a hand-held crane-beam; - with a cargo weight of more than 5 tons - manual overhead crane; - when lifting a load to a height of more than 6 m or with a crane runway length of more than 18 m - electric crane equipment. To move equipment and fittings weighing up to 0.3 tons, it is allowed to use rigging equipment. In rooms with crane equipment, an installation site should be provided. Delivery of equipment and fittings to the installation site should be carried out by rigging or hoist on a monorail leaving the building, and in justified cases - by vehicles. around equipment or vehicle installed on the installation site in the service area of crane equipment, must be provided with 20
21 passages with a width of at least 0.7 m. The dimensions of gates or doors should be determined based on the dimensions of the equipment or vehicle with the load. The load capacity of crane equipment should be determined based on the maximum mass of the transported load or equipment, taking into account the requirements of equipment manufacturers for the conditions of its transportation. In the absence of manufacturers' requirements for the transportation of equipment only in assembled form, the lifting capacity of the crane can be determined based on the part or part of the equipment with the maximum mass. Note: Consideration should be given to the increase in the weight and dimensions of the equipment in cases of its intended replacement with a more powerful one. operation of cranes. In the absence of handling equipment, the height of the premises should be taken in accordance with the SP If the height to the places of maintenance and control of equipment, electric drives and flywheels of valves (gates) is more than 1.4 m from the floor, platforms or bridges should be provided, while the height to the places of maintenance and control from the platform or bridge should not exceed 1m. It is allowed to envisage widening of equipment foundations Installation of equipment and fittings under the installation site or service platforms is allowed at a height from the floor (or bridge) to the bottom of the protruding structures of at least 1.8 m. At the same time, a removable covering of platforms or openings should be provided above the equipment and fittings. Pipelines in buildings and structures should be laid above the floor surface (on supports or brackets) with the installation of bridges over the pipelines and ensuring the approach and maintenance of equipment and fittings. It is allowed to lay pipelines in channels blocked by removable plates, or in basements. The dimensions of the pipeline channels should be taken: - with a pipe diameter of up to 400 mm - a width of 600 mm, a depth of 400 mm more than the diameter; - with a pipe diameter of 500mm and above - the width is 800mm, the depth is 600mm more than the diameter. In places where flange fittings are installed, the channel should be widened. The slope of the bottom of the channels to the pit should be taken at least 0,
22 Suction and pressure manifolds with shut-off valves should be located in the building of the pumping station, if this does not increase the span of the turbine hall. Gate valves (butterfly valves) on pipelines of any diameter with remote or automatic control must be electrically driven Connection of detachable pipeline fittings and shut-off valves should be provided on hardware (bolts, studs) made of stainless steel grade 12X18H10T or carbon steel with thermal diffusion zinc coating ( TDC) (Appendix 5, 6). Carbon steel hardware with galvanized galvanization may be used with pipe diameters less than 50 mm (Appendix 7) "Mosvodokanal" (Appendix 1). All pipe and coating materials used for water supply networks must undergo additional tests for the general toxic effect of constituent components that can diffuse into water in concentrations hazardous to public health and lead to allergenic, skin-irritating, mutagenic and other negative effects on humans. Pipelines in pumping stations, as a rule, should be made of steel pipes for welding (up to 500 mm steel grade St20, steel grade 17G1S with a diameter of 500 mm or more) using flanges for connecting to fittings and pumps. Pumping stations should be equipped with a fire alarm. The internal fire water pipeline is designed in accordance with the requirements normative documents depending on the size of the building. In pumping stations at water wells, fire-fighting water supply is not provided. The suction pipeline, as a rule, must have a continuous rise to the pump of at least 0.005. In places where pipeline diameters change, eccentric transitions should be used. In buried and semi-buried pumping stations, measures should be taken to prevent possible flooding of units in the event of an accident within the machine room at the largest pump in terms of productivity, as well as shut-off valves or pipelines by: 22
23 - location of pump motors at a height of at least 0.5 m from the floor of the machine room; - gravity discharge of an emergency amount of water into the sewer or onto the surface of the earth with the installation of a valve or gate valve; - pumping water from the pit with drainage or emergency pumps. If it is necessary to install emergency pumps, their performance should be determined from the condition of pumping water from the machine room with a layer of 0.5 m for no more than 2 hours, and one standby unit should be provided for water drainage. The floors and channels of the machine room should be designed with a slope to the prefabricated pit. On foundations for pumps, bumpers, grooves and pipes for water drainage should be provided. If gravity drainage of water from the pit is not possible, drainage pumps should be provided. In the pumping station, regardless of the degree of its automation, a sanitary unit (toilet and sink), a room and a locker for storing clothes of the operating personnel (on-duty repair team) should be provided. When the pumping station is located at a distance of no more than 50 m from industrial buildings having sanitary facilities, a sanitary unit may not be provided. In pumping stations above water wells, a sanitary unit should not be provided. In a separately located pumping station for minor repairs, a separate room should be provided. In pumping stations, installation of control and measuring equipment should be provided in accordance with the following guidelines: water conduits and at each pumping unit, water flow in pressure conduits, as well as monitoring the water level in drainage pits, the temperature of the bearings of the units (if necessary), monitoring vibration, emergency flooding (the appearance of water in the machine room at the level of the foundations of electric drives). With a pumping unit power of 100 kW or more, it is necessary to provide for periodic determination of the efficiency factor with an error of no more than 3% Pumping stations for all purposes should, as a rule, be designed with control without permanent attendants: tanks, pressure or water flow in the network); - remote (telemechanical) - from the control point; - local - periodically coming personnel with the transfer of the necessary signals to the control point or point with the constant presence of servicemen;
24 living personnel. With automatic or remote (telemechanical) control, local control should also be provided. For pumping stations with a variable operating mode, it should be possible to regulate the pressure and water flow, minimum flow electricity. Regulation can be carried out stepwise - by changing the number of operating pump units or smoothly - by changing the speed of pumps, the degree of opening of control valves and other methods, as well as a combination of these methods. As a rule, one pump unit in a group of 2-3 working units should be equipped with an adjustable electric drive. . The control of an adjustable electric drive should, as a rule, be carried out automatically depending on the pressure at the dictating points of the network (or on the collector of the pumping station), the flow rate of water supplied to the network, the water level in the tanks. Mathematical support (algorithms) for control of an adjustable electric drive should provide for trouble-free operation of the automated control system in the event of malfunctions of sensors and instrumentation, accidents of SC, electric drives and ZRA, lack of communication with the control object, loss and subsequent restoration of power supply through the feeders, taking into account the possible “skew” of phases, flooding of the turbine hall In automated pumping stations, in case of emergency shutdown of working pumping units, the backup unit should be automatically switched on. When automatically turning on the standby unit, prevent a sharp change in pressure in the suction and pressure pipelines to prevent water hammer Pumping stations should not provide for self-starting of pumping units or automatic switching them on at intervals if simultaneous self-starting is impossible due to power supply conditions Pumping stations should be provided with blocking, excluding drawdown of water in reservoirs below the minimum level In pumping stations, automation of the following auxiliary processes should be provided: adjustment by time or level difference, pumping out of drainage water according to water levels in the pit, heating according to the air temperature in the room, and ventilation When frequency regulation of the performance of pumping units to prevent deterioration of the quality parameters of power supply, increase in electromagnetic background and interference In pumping stations, if necessary, a reservoir should be provided s, the capacity of which includes the regulating, fire and emergency volume of water. 24
25 3.27. The number of tanks must be at least two. In all reservoirs, the lowest and highest levels water should be at the same level respectively. When one tank is turned off, the rest must store at least 50% of the fire and emergency volumes of water. The equipment of the tanks must ensure the possibility of independent switching on and emptying of each tank. The tanks must be provided with water exchange within a period of not more than 48 hours. The tanks and their equipment must be protected from water freezing. The tanks are equipped with inlet and outlet pipelines, an overflow device, a drain pipeline, a ventilation device, ladders. , manholes. Devices are provided for measuring the water level, controlling vacuum and pressure, flushing water, a device for cleaning incoming air, skylights with a diameter of 300 mm, a manhole, ladders (made of stainless steel) for lowering into the RPV. stainless steel with electric heating and insulation. 4. STRUCTURAL SOLUTIONS, UNDERGROUND AND ABOVE-GROUND PART OF BUILDINGS, BEARING AND Fencing STRUCTURES (ceilings, partitions, stairs, roofing) The project shall provide for: 4.1. Execution of the underground part of the pumping station from monolithic reinforced concrete, using concrete of grade not less than VZ5W Entrance doors, gates to the building of the pumping station are metal, insulated Doors to all rooms of engineering systems inside the pumping station Metal stairs for descending into underground part pumping station, at an angle of not more than 45 degrees Metal stairs, fences, platforms, overlapping of openings, metal frames in the openings of building structures, shutters should be made of stainless materials Top of the chambers, not on the roadway, above the layout by at least 20 cm overlapping of the chambers, providing the lowering of submersible pumps into it. Embedded parts in the chambers, metal structures made of stainless materials. The covers on the hatches of the chambers are double, with a locking device. 25
26 4.8. In the specification of engineering systems, standard fasteners technological pipelines, communications, engineering systems equipment. 5. ELECTRICAL REQUIREMENTS The project shall provide for: 5.1. Power supply from 2 independent sources. To ensure the uninterrupted operation of emergency pumps (pumping facilities) - an independent power source based on a diesel generator set, with a capacity sufficient to ensure reliable operation of the pumping station, with its automatic activation in the event of a complete power outage from the external power supply Low voltage switchboards with input and sectional automatic switches and AVR (automatic transfer switch) of sectional and backup power supply Control cabinets, automation, protection, junction boxes, all switching equipment, lighting devices outside the flood zone, at a mark not lower than Compact cabinets of switchboard equipment, RTZO (regulation of technological equipment) The use of all cables and wires with copper conductors, cables from control cabinets to pumping units without couplings Degree of protection of electrical cables, wiring, control systems, automation, lighting, cabinets, instrumentation instrumentation (KIP) in accordance with the temperature and humidity of the premises Local, remote, remote control of technological equipment, gates, gate valves. If possible, use ZRA electric drives with digital control (Profibus DP, Modbus PRU on the RS485 physical standard). When designing new automatic control systems, use only equipment that has been proven and well-proven at the facilities of Mosvodokanal OJSC Lightning protection of the pumping station lighting In power supply systems, energy-saving technologies, equipment Energy-saving lamps in moisture-proof design for indoor lighting in production departments. 26
27 5.12. Stationary lamps with emergency power units, in a moisture-proof design, with automatic switching on for internal, emergency lighting, use Control systems, automation, lighting, metering of consumed electricity, with output to the "Automated control system for electricity metering" (ASKUE) Automated system for dispatching and controlling the pumping station station, gate valves with output to ASDKUV of information about the status and switching, outages in power supply, control, protection, automation systems via a fiber-optic communication line to the control room of a pumping station. and video surveillance systems. 6. AUTOMATION AND DISPATCHING All work on the automation of objects is carried out in accordance with the requirements of the APCS and C Department, formulated in the assignment for the development of the project, or TS or technical assignments issued at the request of the designers. standard project automation provides for: 6.1. Full automation of the control mode (local from the local console or control panel; automatic control from the controller with the setting of control modes from control rooms; remote telecontrol through the controller from any of the control rooms: Pump Station Services (SNS), Central Dispatch Control (CDU), Dispatch area of the water supply network) The projects should provide for the programming of controllers at the facilities, the organization of data transfer to SCADA, the development of SCADA mnemonic diagrams, the collection of parameters in the history database technological processes and others necessary work to ensure the automation of facility management Programmable controllers, telecontrol cabinets, instruments and means of monitoring and control must be powered according to the first special category of power supply in accordance with the PUE (from two independent sources through ATS) and equipped with on-line backup power supply units that ensure the operation of the equipment automation for at least 2 hours with a complete blackout of the pumping station
28 not lower than IP-55. In the area of possible flooding in a sealed design. Compliance with the temperature and humidity modes of operation of automation (air conditioning / heating and ventilation) should be provided, depending on the passport requirements for the installed automation equipment. It is recommended to use hydrostatic level gauges for level control and electromagnetic water flow meters for flow control. The devices must be equipped with a digital output, as well as an analog output of 4-20 mA. On the NS, it is required to provide an audible alarm when alarms are triggered, output to the controller and transmission of information from the protection devices RKZ (protection monitoring relay) and their display in the control room of the SNS and CDU B depending on the terms of reference, a complex of technical security systems of the facility is provided: burglar alarm, automatic access control, burglar fire alarm, video surveillance, local system warning system of security video surveillance of the perimeter of the territory of the facility and interior spaces object, using digital systems for receiving, processing, transmitting video information, a video information storage archive designed to store recordings from all video cameras, conducted around the clock, with a picture quality of at least 25cad / s security alarm of buildings and structures located on the territory of the facility, installed using separate devices, sensors and communication lines from fire automation systems. The security alarm should include at least 2 security lines, using sensors based on different physical principles of operation (for example: the perimeter of the building, windows, doors, etc. using SMC sensors or acoustic glass break sensors and the volume of all internal premises using IR sensors). Output of information to the security room, a fire automatics system, in accordance with the joint venture, an automated access control system, using blocking devices both for people passing to the facility and for transport, recognition of human biometric parameters and reading and determining numbers and brands of cars, restricting passage to buildings and structures on the territory of the facility in accordance with the business need, communication with the main ASKD servers located in the administrative building at the address: Pleteshkovsky per., d local public address system, including equipment for receiving wired 3-channel radio, distribution equipment and - 28
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ARCHITECTURAL DESIGN A complete package of documentation for the construction of a house, including internal engineering networks - from 1800 rubles / m 2 PRE-DESIGN OFFER (ARCHITECTURAL CONCEPT) Development stage
JOINT-STOCK COMPANY
"MOSVODOKANAL"
to the design of water supply and sanitation facilities in Moscow during new construction and reconstruction
Moscow, 2016
CONTENT
| Page |
||
| I. | General requirements for the design of water supply and sanitation pipelines ……………………………………... | 7 |
| II. | Water supply………………………………………………………… | 8-17 |
| 1. | | 8 |
| 2. | | 8-11 |
| 3. | | 11-14 |
| 4. | | 14-15 |
| 5. | | 15-16 |
| 6. | Construction of foundations for pipelines …………………………. | 17 |
| III. | Water pumping stations of the 3rd lift . . . . . . . . . . . . . . | 17-31 |
| 1. | | 17 |
| 2. | | 18 |
| 3. | | 18-25 |
| 4. | | 25-26 |
| 5. | | 26-27 |
| 6. | | 27-29 |
| 7. | Engineering equipment, networks and systems of buildings, structures .... | 29 |
| 8. | | 29 |
| 9. | Engineering and technical strength ……………………………... | 30 |
| 10. | | 31 |
| IV. | Gravity and pressure sewerage …………………………….. | 31-45 |
| 1. | Composition of project documentation ……………………………………... | 31 |
| 2. | Requirements for project documentation ……………………………… | 31-32 |
| 3. | Special conditions for design ………………………………… | 33-34 |
| 4. | Additional design conditions ……………………… | 34-37 |
| 5. | Structures of wells and chambers ………………………………………. | 37-44 |
| 6. | Shut-off valves on gravity and pressure pipelines …………………………………………………………. | 44-45 |
| 7. | Construction of bases for gravity and pressure pipelines ………………………………………………………….. | 45 |
| v. | Sewage pumping stations and APP……………………… | 45-56 |
| 1. | Basic requirements for design solutions ……………………… | 46 |
| 2. | Architectural and planning solutions ……………………………... | 46-47 |
| 3. | Technological and technical solutions, equipment, pipelines …………………………………………. | 47-48 |
| 4. | Structural solutions, underground and above ground part of buildings, load-bearing and enclosing structures ………………. | 48-49 |
| 5. | Electrical requirements ……………………………………... | 49-50 |
| 6. | Automation and dispatching …………………………………… | 50-52 |
| 7. | Engineering equipment, networks and systems of buildings, structures ….. | 52-53 |
| 8. | External engineering support ………………………………….. | 53 |
| 9. | Environmental protection …………………………………………… | 53 |
| 10. | Emergency control tank (APP) | 53-56 |
| VI. | Technical requirements for measuring instruments and metering units for cold water and wastewater ……………………………………… | 56-62 |
| 1. | General requirements for the installation of cold water metering units and the choice of water meters ……………………………………………………… | 56-57 |
| 2. | Requirements for vane water meters …………………………... | 57-58 |
| 3. | Requirements for turbine water meters ……………………………. | 58-59 |
| 4. | Requirements for ultrasonic flowmeters ……………………….. | 59-60 |
| 5. | General requirements for the installation of wastewater metering units …………. | 60-62 |
| VII. | Requirements for the design of objects of control and management on water supply networks. Data on instruments, automation equipment and information transfer ……………... | 62-67 |
| 1. | General requirements for instruments and automation equipment ……….. | 62-63 |
| 2. | Transfer of information …………………………………………………… | 63-64 |
| 3. | Flowmeters ……………………………………………………………… | 65 |
| 4. | Pressure measuring instruments …………………………………………… | 65 |
| 5. | Water quality analyzers …………………………………………... | 65-66 |
| 6. | Programmable logic controllers in control circuits for safety and control valves ……… | 66-67 |
| VIII. | Requirements for electrical protection during design water supply and sanitation facilities ……………………….. | 67-68 |
| IX. | Energy Saving Requirements …………………………………. | 68-69 |
| X. | List of regulatory and technical documentation……………… | 70-75 |
| Attachment 1:Technical requirements for the use of pipes and m materials for the construction and reconstruction of pipelines for drinking water supply and sewerage facilities of Mosvodokanal JSC | ||
| Application 2: Technical requirements for butterfly valves used at the facilities of JSC "Mosvodokanal" | ||
| Application 3: Technical requirements for knife (knife) gate valves used at the facilities of JSC "Mosvodokanal" | ||
| Application 4: Technical requirements for wedge-type gate valves used at the facilities of JSC "Mosvodokanal" | ||
| Application5: Technical requirements for hardware products made of stainless steel 12X18H10T | ||
| Appendix 6: Technical requirements for hardware products with thermal diffusion zinc coating (TDZ) | ||
| Appendix 6: Technical requirements for hardware products with galvanized galvanizing | ||
| Application 8: Technical requirements for fire hydrants | ||
| Appendix 9: Technical requirements for supporting and covering elements | ||
| Appendix 10: Technical requirements for check valves | ||
| Application 11: Technical requirements for the equipment of the automated pressure control system of the urban water supply network | ||
| Application12: Typical terms of reference for the development of a project for the construction of a PS with low-voltage equipment, with a capacity of up to 20 thousand m 3 /day. Table of controlled signals at the pumping station and displayed on the workstation of the SCC SNS. | ||
| Application13: Standard terms of reference for the development of a project for the construction of a sewage pumping station with low-voltage equipment, with a capacity of up to 5.0 thousand m 3 / day. Table of controlled signals at the pumping station and displayed on the AWP DP SENS. | ||
| Appendix 14: Technical requirements for vane water meters. | ||
| Appendix 15: Technical requirements for turbine water meters. | ||
| Appendix 16: Technical requirements for the manufacture of panel gates intended for installation in chambers on a sewer network |
I. GENERAL REQUIREMENTS
TO THE DESIGN OF PIPELINES AND FACILITIES
WATER SUPPLY AND WATER SUPPLY
1. These requirements apply to the development of technical solutions for the design of water supply and sanitation facilities.
2. Design solutions are developed taking into account the requirements of the regulatory
but-technical documents (Decrees of the Government of Moscow, GOST, SP, SNiP, MGSN, etc.), approved standard albums and requirements of the operating organization Mosvodokanal JSC.
3. Design solutions are carried out in full compliance with the issued technical specifications (TS) and design assignments (TOR).
4. In the event that the TU (TOR) provides for the stages of construction, it is allowed to carry out projects in stages.
5. When designing water supply and sewerage for complex buildings or facilities with large water consumption and large volumes of wastewater, as well as transport routes, Schemes are developed, on the basis of which Mosvodokanal JSC issues technical specifications.
6. JSC "Mosvodokanal" accepts design documentation for consideration in the amount of 2 copies (water supply), 2 copies (electrical protection), 3 copies (gravity sewerage), 4 copies (gravity-pressure sewerage), approved by all the performers indicated in the project stamp.
II. WATER SUPPLY
1. COMPOSITION OF PROJECT DOCUMENTATION
Project documentation should include:
1 .one. For highways and networks:
Explanatory note (including the composition of the project);
Engineering-geological conclusion;
Situational plan M 1:2000 with drawing of the designed structures;
Detailing with specification;
Longitudinal profile M 1:100 (vertical) / M 1:500 or 1:200 (horizontal) with a geological section;
Structural drawings of individual chambers, wells, stops, etc.
1. 2. For inputs and on-site networks:
Common data;
Geodetic plan M 1:500 (1:200) - a master plan of networks with landscaping elements;
Situational plan M 1:2000;
Detailing with specification;
Profile M 1:100 / M 1:500 (1:200);
Plan of the premises, placement and scheme of the water metering unit;
Plan, diagram of the central heating station, ITP, UATP with the arrangement of water metering units;
Structural drawings of individual wells, stops, etc.
2. REQUIREMENTS TOPROJECT DOCUMENTATION
2.1. Sheet "general data" (for house inputs) should include:
These technical conditions are provided for review. As an example, a projected residential area is used. A stage is a working project.
Water supply
First, as a rule, the presented water supply system is described with construction stages and features. Water supply shall be carried out in accordance with the requirements of the technical specifications. A prerequisite for water supply is compliance with the requirements of SanPiN 2.1.4.1074-01. "Drinking water. Hygienic requirements for water quality of centralized drinking water supply systems. Quality control". In the water supply project of the building under consideration, a hydraulic calculation of the throughput of pipelines should be performed. The diameters of the sections of the distribution water supply network should also be determined on the basis of a hydraulic calculation. The distribution water supply network shall be designed and implemented as a ring network. Ensuring water supply for firefighting needs is up to the author of the project.
Special conditions for water supply
- after finishing construction works and putting the facility into operation resolving the issue of delimitation balance affiliation water supply networks and structures. The following shall be transferred to the ownership of the city of Moscow and to the economic management (on the balance sheet) of the relevant operational unit of MGUP "Mosvodokanal": newly built and reconstructed water conduits, mains, water supply networks and inputs. These networks must be transferred to the balance of MGUP "Mosvodokanal" in the manner prescribed by the Decree of the Moscow Government dated August 22, 2000 No. 660 and the order of the First Deputy Prime Minister of the Moscow Government dated December 21, 2000 No. 1058-RZP. The transfer and acceptance of networks on the balance sheet must be confirmed by a written guarantee obligation of the customer-investor when submitting project documentation to MGUP Mosvodokanal;
- driveways along water supply routes and entrances to chambers and wells;
- design the route of the water supply system with the placement of manholes and chambers outside the carriageways of streets and roads. If it is impossible to arrange wells outside the carriageway, provide for the installation of support-covering elements (floating hatches) of domestic production;
- liquidation of networks with backfilling of pipelines and wells or their dismantling, in accordance with paragraph 7 of the Rules for the production of earthworks and construction works in Moscow, approved by the Decree of the Government of Moscow No. with MGUP "Mosvodokanal";
- relocation by forces at the expense of the customer of water supply networks, inputs, plant-measuring networks that fall under development, before the start of construction, in agreement with MGUP Mosvodokanal and subscribers, without disrupting the water supply of the remaining consumers;
- arrangement of individual inputs to each building with the installation of water meters with a pulse output behind the first wall from the side of the city water supply;
- when designing the central heating substation, ITP, provide for the installation of common water meters with a pulse output behind the first wall from the side of the city water supply;
- installation of check valves at water inlets after the water metering unit in order to prevent emergencies on city water supply networks;
- ring input (according to the calculation) with parallel laying of the pipeline from one well with the installation of a separating valve between the inputs; both inputs must be interchangeable, simultaneously operating and united by one common water meter located behind the first wall of the building from the side of the city water supply in a heated room;
- checking by hydraulic calculation of the diameter and number of input threads, the diameter of the plant-measuring network, pumps and water meters. If necessary, shift the input and the plant measuring network, replace the pumps and the water meter with the forces and means of the customer;
- the use of modern combined fire-fighting pumping equipment with an adjustable drive, in agreement with the UGPS of Moscow;
– laying of water pipes without transit through buildings;
- installation of water meters with a pulse output in front of the boiler in the central heating station and on cold water supply pipelines in each building;
- the use of storage tanks in the internal water supply systems of buildings in civil and industrial construction, as well as in the reconstruction of housing stock for more than 50 years of operation during a feasibility study;
- provide for the insulation of pipelines and shaped fittings in places of possible freezing;
- the use of pipes made of ductile iron (ductile iron) with an internal cement-sand coating and external hot-dip galvanizing, having a Russian hygienic certificate for diameters of 50-1000 mm, including in urban and intra-quarter collectors (with thermal tape insulation or electric heating in automatic mode within a 30-meter zone near the ventilation shafts),
– the use of polymer multilayer pipes produced by co-extrusion of PE100 and modified PE100 with a protective coating of a light-stabilized mineral-filled composition with increased resistance to mechanical damage;
- when laying in through collectors, provide for measures to protect pipelines from corrosion:
– elimination of parallel operating networks;
- the use of steel pipes over 1000 mm with an internal cement-sand coating and an external protective coating of extruded polyethylene in accordance with GOST 9.602 89 with anti-corrosion protection measures, including the installation of insulating inserts, dielectric flanges and the construction of an EZU (electrical protective installation). Laying of steel pipes up to 1000 mm, as a rule, is not allowed;
- provide for the use of LIAM tape (TU 2257-016-16802096-99) for insulating butt joints of steel pipes (development of the Academy public utilities them. K.D. Panfilova);
- installation of stuffing box expansion joints instead of bell-shaped connections in young people for diameters of 50-1200 mm, as well as mounting inserts for internal maintenance of the pipeline during operation;
– fittings with internal cement coating and external polyethylene coating.
- On detachable flanges of pipeline fittings, pumping equipment, fittings, parts of pipelines installed in wells, chambers, directly in the ground, at water metering units, in pumping station premises, at water treatment and water treatment facilities, etc., provide for bolted connections with corrosion-resistant thermal diffusion zinc coating (TDC) or stainless steel grade 12X18H10T (technical requirements for hardware products are available on the website of MGUP Mosvodokanal);
- to provide electrical jumpers in existing and planned wells and chambers located in the area of electrical protection in the presence of shaped parts and shutoff valves made of cast iron. The installation of the electrical jumper should be carried out with its output under the hatch for the production of electrical measurements and obligatory provision detailing existing and planned wells and chambers to the Center for Technical Diagnostics;
- use RMS of a pulse-converting type with protective grounding (the need for automatic mode is determined at the stage of survey work) with telemetry;
- provide for deep anode groundings distributed along the pipeline route with a service life of at least 10 years;
- the design parameters of the UKZ should ensure the electrical protection of pipelines with a length of at least 1-1.2 km;
- at the inputs to the central heating station and to the buildings, provide for the installation of insulating inserts (IV);
- the feasibility of installing the IW on plant-measuring networks and determine the location of the location by leakage currents, coordinating the installation with the organizations operating these communications (DEZ, State Unitary Enterprise "Mosgorteplo", State Unitary Enterprise "Moscollector" ...);
- the choice of converters, Ch.A.Z., grades and sections of cables, the installation of IV should be carried out in accordance with the feasibility study;
- provide the necessary electrical jumpers in the chambers and wells in case of violation of the longitudinal conductivity with an output under the hatch for electrical measurements (submit details);
- provide for the installation of control and measuring points (CIPs) on the protected pipelines according to drawing No. EZK-20.00SB in accordance with GOST 9.602-2005, designate the coverage areas of the UKZ;
- the power supply of the UKZ should be carried out only from the networks of the OJSC Moscow City Electric Grid Company;
- installation of safety and control valves on water mains and networks, as well as measuring instruments for measuring water flow and pressure with remote transmission of information;
- shut-off valves with a service life of at least 50 years, a warranty period of at least 10 years, with an anti-corrosion coating that excludes corrosion during the warranty period;
– when installing butterfly valves with a rubber seal along the body with a diameter of more than 150 mm, it is necessary to use mating flanges manufactured in accordance with GOST 12821-80;
- shut-off valve drive gearbox with a resource for the full service life of the valve;
- the presence on the shut-off valves of the marking with the identification number and trademark of the manufacturer;
- when installing shutoff valves, provide for the installation of stationary rods;
- degree of tightness of stop valves according to class A in accordance with GOST 9544-93, safety requirements in accordance with GOST 12.2.063-81, construction length in accordance with GOST 3706-93, connecting dimensions of flanges in accordance with GOST 12815-80;
– sealing material for shut-off and control valves EPDM is a thermopolymer of ethylene, propylene and a diene with the remaining unsaturated part of the diene in the side chain (GOST 28860-90);
- the use (in a wellless version) of fire hydrants designed for operation for 50 years or more, certified on the territory of the Russian Federation;
- provide for the installation of floating hatches;
- if necessary, for the period of construction, provide for a bypass with the installation of a "Bogdanov nut";
- development of a schematic diagram of flushing pipelines with the determination of the volume of construction and installation work and the inclusion in the estimate calculation of the total costs for the cost of arranging flushing and water consumption during tie-ins and flushes;
– To coordinate the flushing scheme and PPR with all interested organizations in accordance with SNiP 3.05.04-85*;
- the use of telediagnostics of pipelines d = 100–600 mm to determine the quality of the internal surface of pipelines and their sanitary condition before and after sanitation and before hydromechanical cleaning before flushing;
- in front of the control unit for pumping equipment for internal automatic fire extinguishing (sprinkler and deluge), provide for a water intake for a sanitary appliance as a buffer zone, with the installation of a water meter;
– When designing wheel washing points, provide for a water recycling device and coordination of treatment facilities projects by TsGSEN, Mosvodostok and Mosvodokanal;
- In order to save water on internal water supply systems, provide for: providing hydrostatic head in the domestic drinking water supply system at the level of the lowest located sanitary device of not more than 40 m. Art. in accordance with MGSN 2.01-99. Technical solutions to ensure the specified pressure, the project should be resolved in the section on water-saving measures, including the use of an apartment pressure regulator (KRD) with a degree of reliability and durability of at least 20 years; installation of new water-saving sanitary fittings in accordance with Appendix No. 3 to the Order of the Prime Minister of the Government of Moscow dated 05.05.97. No. 460-RP.
– Responsibility for the quality of water consumed during internal system after the metering station is assigned to the subscriber.
- On the main pipelines, it is necessary to install shut-off valves with remote control.
- At water metering units, provide for remote transmission of data on the operation parameters of the water metering unit (pressure, flow, water quality and the state of the bypass valve).
sewerage
Sewerage of the object is carried out in accordance with the technical conditions. Accept the diameter of the designed network according to the calculation. Provide for the project:
– measures to eliminate existing sewerage facilities (SPS, pipelines);
– installation of a wastewater metering device. For the type and location of the metering device, get recommendations from the Mosvodosbyt Administration (tel. 8-499-265-38-90);
- installation of a grease trap at the outlet from public catering facilities.
Upon receipt of a permit for the discharge of wastewater, submit an act of delimitation of the balance sheet ownership of sewer networks.
Special conditions for sewerage:
When designing, consider:
– after the completion of construction work and commissioning of the facility, the solution of the issue of delimitation of the balance sheet belonging of sewer networks and structures.
- prior to the start of construction, the relocation of sewerage networks that fall under development, by the forces and at the expense of the customer, in agreement with MGUP "Mosvodokanal" and subscribers without disturbing the sewerage of the remaining consumers.
- in case of installation of sanitary appliances in basements, their sewerage shall be carried out in accordance with SNiP 2.04.01-85, with a device of its own release, equipped with an electrified valve.
- design the sewerage route with the placement of manholes and roadways of streets and roads. If it is impossible to arrange wells outside the carriageway, provide for the installation of support-covering elements (floating hatches) of domestic production.
- design and construction of sewerage networks must be carried out by the forces and at the expense of the customer (investor).
- standard clean water is not accepted into the sewerage system; after treatment at local treatment facilities, they must be sent to the circulating water supply system or to the rainwater sewerage network.
– When designing, use the following types of pipes:
- when laying gravity sewerage in an open way by pulling without destroying the existing pipe - use single-layer pipes made of PE 100 not lower than SDR 17;
- when laying a gravity sewer by pulling with the destruction of an existing pipe ("pneumatic punch" method) - it is possible to use a single-layer pipe made of PE 63, PE80, PE100;
- when laying pressure pipelines by pulling or directional drilling - use pipes made of polyethylene PE 100 not lower than SDR 17 with a reinforced protective coating or multilayer Safe Tech and TS types;
- profiled corrugated pipes made of thermoplastics with a ring stiffness of at least 16 kN / m 2 (TU 2248-001-73011750-2005, album SK-40 / 09MVS);
- profiled pipes made of thermoplastics, reinforced with a metal profile with a ring stiffness of at least 16 kN / m 2 (TU 2248-017-73011750-2011),
– pressure two-layer pipes made of PE100 with an external protective coating to increase resistance to external mechanical damage (STO 73011750-004-2009);
- On detachable flanges of pipeline fittings, pumping equipment, fittings, parts of pipelines installed in wells, chambers, directly in the ground, at water metering units, in pumping station premises, at water treatment and water treatment facilities, etc., bolted connections with corrosion-resistant thermal diffusion zinc coating (TDC) or stainless steel grade 12X18H10T (technical requirements for hardware products are available on the website of MGUP Mosvodokanal).
- in the necks, in the tray part of the manholes, provide for the installation of protective gratings made of reinforcement d = 22mm with a cell of 240 × 240mm.
- when designing chambers on collectors and channels with a diameter of 700 mm and above, provide for the installation of stairs and other metal structures made of stainless steel 12X18H10T.
- when liquidating networks, provide for backfilling of pipelines and wells or their dismantling, in accordance with clause 7.6 of the "Rules for the organization of excavation and construction work in Moscow", approved by Decree of the Government of Moscow No. 857-PP dated 07.12.2004.
- the project provides for a method of hydraulic testing of the pipeline being designed.
- wastewater from washing cars should be treated at local treatment facilities and sent to the circulating water supply system, with subsequent disposal of the resulting sludge at specialized landfills of the State Unitary Enterprise "Promothody".
- to attach to the project a certificate from the State Unitary Enterprise "Promotkhody" on the disposal of sludge.
– during development design and estimate documentation provide for compensation operating costs to change the operation modes of the sewerage system of the city according to the calculations of the Sewerage Administration.
- When designing, provide for the creation and submission to the OPS of the State Unitary Enterprise "Mosgorgeotrest" of an electronic copy of the sewerage project. An electronic copy of the project must be generated in accordance with the requirements of the State Unitary Enterprise "Mosgorgeotrest" in terms of the structure and data formats of the electronic copy of underground engineering communications projects. An electronic copy of the project must be submitted on CD-ROM.
- Laundry effluents before entering the city sewer must contain surfactants no more than 1 mg / l.
- when designing pressurized sewerage networks, it is necessary to provide for the installation of pressure sensors, electromagnetic flow meters, remote control systems for shut-off and control valves with information output to the Central Dispatch Control Center of the sewerage system.
General conditions for water supply and sewerage
After completion of work on the reconstruction of underground utilities and commissioning of the facility, provide for the provision cadastral passports on real estate objects that have arisen as a result of their reconstruction: on the reconstructed part and on the parts of the object that have not undergone reconstruction.
When installing shut-off and control valves with a diameter of 600 mm and above in chambers, it is necessary to install stationary stainless steel extension rods for remote control from the ground.
When developing pits and engineering structures, the customer should perform geomonitoring of soils and engineering communications falling into the prism of collapses.
The location of the facility being designed in relation to the existing water supply and sewerage networks must comply with the requirements of SNiP 2.04.02-84*, SNiP II-89-80*.
The design of water supply and sewerage for new construction, reconstruction or major repairs can be carried out by design organizations that have a license for the right to design objects located in Moscow.
The design and construction of water supply and sewerage networks must be carried out by the forces and at the expense of the customer (investor).
Develop a project for the electrical protection of steel pipelines from soil corrosion and from corrosion caused by the presence of stray currents (determine the acceptance of adjacent steel structures into the protection system after agreement with the interested organizations). Submit the electrical protection project as part of the project for water supply and (or) sewerage.
If open-laying steel pipelines enter the protection zones of existing SPs, the need for additional measures to protect them should be considered at the stage of design and survey work.
Water supply and sewerage projects with anti-corrosion protection measures are submitted to OAO Mosvodokanal in two copies.
When designing, provide for the creation and delivery to the OPS of the State Unitary Enterprise "Mosgorgeotrest" of an electronic copy of water supply and sewerage projects. Electronic copies of projects must be generated in accordance with the requirements of the State Unitary Enterprise "Mosgorgeotrest" in terms of the structure and data formats of an electronic copy of underground engineering communications projects. Electronic copies of projects must be supplied on CD-ROM.
Validity of technical conditions - 3 years
Met in addition to special conditions on water supply in 2015, the following items:
- use supporting-covering elements (manholes-wells) made of high-strength nodular cast iron (VCSHG) with a detachable hinge and locking latches (latch) that can withstand a load of 40 tons:
1 - with a “floating” type body supported on the roadway in urban areas with asphalt pavement (when installed on the carriageway of city roads, parking lots, courtyards, sidewalks, footpaths);
2 - with a conventional body supported on a well neck in urban areas without asphalt pavement, in areas covered with paving stones or paving slabs (when installed on the roadway, yard areas, in areas of footpaths, sidewalks, in the area of green spaces).
– technical requirements for supporting-covering elements (manhole hatches) are posted on the official website of JSC “Mosvodokanal” in the section “Specialists, technical requirements”;
- installation of base plates UOP-6 (with hatches made of gray cast iron) and individual hatches made of gray cast iron that do not meet the approved design requirements are not allowed.
The design should be carried out taking into account the technical requirements of OAO Mosvodokanal for the design of water supply and sanitation facilities in Moscow during new construction and reconstruction. Technical requirements are located on the official website of JSC "Mosvodokanal".
If necessary, liquidation (removal) engineering networks and facilities of OAO Mosvodokanal, the customer must conclude with OAO Mosvodokanal: — an agreement for the implementation of measures to remove technical restrictions on the placement of the customer's facility in the area where the water supply / sewerage network is located; - or after approval of the design and estimate documentation and receipt of a positive expert opinion on it - an agreement on compensation for losses.
In accordance with clause 5.2. The technical requirements for guidance in the design and construction of water supply and sanitation facilities approved by the City of Moscow City Council of Health and Safety, wells and chambers should be provided from prefabricated reinforced concrete elements or monolithic reinforced concrete.
In 2012, JSC Mosvodokanal, in order to ensure the safe operation of hatches, unify the ordered products for new installation or replacement, it was decided to stop purchasing hatches made of gray cast iron and to switch to the installation of hatches made of ductile iron that meet the requirements approved by the water utility. Taking into account the volume of demand for high-quality hatches, the task was to develop an optimal original design and further serial production of hatches from ductile iron, which can withstand a load of 40 tons.
After studying the regulatory and technical documentation, aspects of production, implementation, design, installation of hatches, accumulated domestic and foreign experience five batches of the best samples of hatches (50 pieces in total) from different world manufacturers with different design features were purchased. Hatches were subjected to comparative tests for compliance with regulatory and technical documentation and declared characteristics. Then, the purchased hatches were tested in real operation.
The work carried out made it possible to develop the technical requirements of Mosvodokanal JSC for a new hatch model. Model prototypes were made and its technical and operational tests were carried out.
On the basis of the innovative research and production work carried out, the specialists of Mosvodokanal JSC developed technical requirements for heavy main hatches for wells of water supply and sewer networks. The design is characterized by an increased level of safety when driving on city roads and highways at any intensity and speed of the traffic flow. The service life of steel structure elements is determined to be at least 50 years.
Specialists of Mosvodokanal JSC proposed a new name for the manholes - the support-covering element OUE-600 (when installed on the neck of the well) and OUE-SM-600 (with a body of a "floating" type of self-supporting structure supported on the roadway).
OUE-600 with a conventional body, based on the neck of the well (or additional rings), are designed for installation in urban areas without asphalt pavement, in areas covered with paving stones or paving slabs (when installed on the roadway, yard areas, in pedestrian areas paths, sidewalks, green spaces). It is possible to manufacture round and square shape of the upper part of the body.
OUE-SM-600 with a self-supporting floating type body supported on the roadway, designed for installation in urban areas with asphalt pavement (when installed on the carriageway of city roads, parking lots, courtyards, sidewalks, footpaths). Support-covering elements can be of two types depending on the height of the hull: 140 and 200 mm.
The use of a "floating" body makes it possible to reduce the specific load on the reinforced concrete structure of the well by 85%, i.e. the well design will take on only 15% of the load that was created when using a conventional flanged body, the remaining 85% will be evenly redistributed to the total surface of the roadway. Another important advantage of hatches with a "floating" body is that during its installation, the body itself is pressed into the asphalt pavement. The "floating" design of the hatch does not protrude above the road, but "breathes" along with the road surface. This allows you to maintain the quality of the road surface, to ensure a constant stable position of the hatch on the same line of the surface with the road surface, regardless of various temperature fluctuations and loads. OUE-SM-600 is ideal for replacing old hatches with new ones due to a fairly simple and quick installation method that ensures a stable position of the hatch on the same line of the surface with the roadway.
The technical requirements for supporting and covering elements are included as an appendix to the approved "Technical requirements of Mosvodokanal JSC for the design of water supply and sanitation facilities in Moscow during new construction and reconstruction."
Work on the manufacture of the first model of the domestic support-covering element was carried out at the Tyazhpressmash plant in Ryazan. OUE are produced from high-strength nodular graphite iron (VCSHG) and comply with the requirements of GOST 3634-99 and the European standard EN 124. Serial production of OUE-600 and OUE-SM-600, which meet the technical requirements of Mosvodokanal JSC, is currently mastered at several Russian enterprises, which significantly reduced their initial cost.
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