Gas supply of a residential building in Kuzmino

Contents

Design Task

Specification No. 1092 issued by PU Bryanskmezhereigaz dated July 4, 2011

Certificate No. 2814 issued by the Snezhskaya Rural Administration MU on July 28

08.11.060-DBE Explanatory Note

1. General part

2. Characteristics of the gas supplied facility

3. Hydraulic calculation

4. External gas pipeline networks

5. Internal gas supply

6. Flue gas ventilation and removal

7. Gas Pipeline Test

08.11.060-Seeker External gas supply

1. General Data

2. External gas pipeline plan

08.11.060-GSN.C Specification

08.11.060-GSV Internal gas supply

1. General Data

2. Internal Gas Pipeline Plan

3. Axonometric diagram

08.11.060-GSW.C Specification

1. Common part.

The working project for gasification of a residential building located at: Bryansk region, Bryansk rn, Kuzmino village, ul. Yesenina, d.42, was developed on the basis of:

- design tasks issued by the customer Matyukhin V.G.

- Specification No. 1092 issued by PU Bryanskmezhraigaz dated July 22, 2011.

The project was developed in accordance with the requirements of SNiP 42012002, "Safety Rules for Gas Distribution and Gas Consumption Systems" PB 1252903, SP 421012003.

2. Characteristics of the gas supplied facility.

This project provides for gasification of a residential building located at the address: Bryansk region, Bryansk Rn, Kuzmino village, ul. Yesenina, d. 42.

The project provides for installation of Baxi LUNA HT Residential 1.650 gas boiler - 1 pc., storage water heater Baxi SAG2 195 T - 1pc., gas plate 4controlled SG-4 and installation of gas flow metering unit BKG 10 with filter FS32 in heated room.

Construction and installation works are performed in the following sequence:

Connection point - from the existing low-pressure gas pipeline on the street. Yesenina, located on the balance of the Snezhskoye rural settlement of the Bryansk region.

1st stage of construction: gasification of the boiler house;

II phase of construction: gasification of the kitchen.

Diameter at connection point: D 219 mm.

Gas pressure at the point of connection: 0.00160.0018 MPa.

Pipe material at connection point: steel.

The type of pipe insulation at the connection point is "Very reinforced" (with sticky ribbons).

Depth at connection point: 1 m.

Gas appliances are installed in the boiler room of a residential building:

- gas meter BKG 10 - 1 pc.

- gas boiler Baxi LUNA HT Residential 1.650 - 1 pc.

- accumulating water heater Baxi SAG2 195 T - 1 pc.

Gas appliances are installed in the kitchen of a residential building:

- gas stove PG4 - 1 pc.

Baxi LUNA HT Residential 1.650 (65 kW) gas boiler is designed for home heating. Storage water heater Baxi SAG2 195 T (7, 8 kW) is designed for hot water supply of a residential building.

The boiler room has a volume of V = 74.38 m3, which meets the requirement for minimum sizes of rooms in which gas-using equipment is installed: 0.2 m3 per 1 kW plus 15.5 m3

0.2х87.0+15.5=32.9 m3

The area of easy-throwing structures (blasting panels) shall be 0.03 m2 per 1 m3 of the room in which the gas-using equipment is installed.

Sq.m Vx0.03=74.38x0.03=2.2

Existing window openings of the boiler room have an area of ​ ​ 2.7 m2, which meets the requirements.

The building is brick. During the survey, the building plans were specified in kind; there are no additional non-capital additions.

Heated area - 350.0 m2.

Total hourly gas flow rate -9.48 m3/h

3. Hydraulic calculation.

Calculation of the diameter of the low pressure gas pipeline.

Source Data:

- low pressure gas pipeline

- gas flow rate 9.48 m3/h .

- initial gas pressure 1600 Pa

- length of gas pipeline 105 m

- gas density 0.73 kg/m3

According to table 3.2 of the Handbook on Gas Supply and Use of Gas, N.L. Staskevich et al., we find that at a flow rate of 9.48 m3/h, the maximum permissible specific losses for friction are 3.0 Pa/m.

The diameter of the pipe to the nearest larger is Du 32 mm .

We accept the diameter of the gas pipeline equal to Du 32 mm.

We increase the actual length of the gas pipeline by 10%:

105x1.1 = 115.5 m

Find the pressure loss at the endpoint:

1600- (3.0x115.5) = 1253.5 Pa or 127.82 mm water

The total pressure loss is:

346.5 Pa or 35.3 mmAW

We accept the maximum diameter of the designed gas pipeline equal to Du 32 mm.

4. External gas pipeline networks.

Connection point - from the existing low-pressure gas pipeline on the street. Yesenina, located on the balance of the Snezhskoye rural settlement of the Bryansk region.

Diameter at connection point: D 219 mm.

Gas pressure at the point of connection: 0.00160.0018 MPa.

Pipe material at connection point: steel.

The type of pipe insulation at the connection point is "Very reinforced" (with sticky ribbons).

Depth at connection point: 1 m.

The external gas pipeline shall be laid underground from polyethylene pipes D 32 mm as per GOST 5083895 and steel water and gas pipes D 32 mm as per GOST 326275 .

After tie-in and before the gas pipeline leaves the ground, provide for the installation of a permanent connection "polyethylene steel."

The gas pipeline shall be laid according to the plan of GSN.2 sheet of this project.

The disconnecting device at the outlet of the gas pipeline from the ground is a projected ball crane of 11b27p Du 32 mm at an altitude of 1.8 m from the ground level.

On the gas riser install the welded insulating connection IS32 Du 32 mm.

Lay the above-ground gas pipeline along the facade of the building.

The gas pipeline shall be installed on welding.

Threaded connections on the gas pipeline shall be used only in places of isolation valves installation.

Welding, installation, testing and acceptance of the gas pipeline shall be carried out in accordance with the requirements of SNiP 42012002, "Safety Rules for Gas Distribution and Gas Consumption Systems" PB 1252903.

5. Internal gas supply.

The internal gas pipeline shall be made of 32, 20 and 15 mm DN pipes as per GOST 326275.

Install gas meter BKG 10 with filter FS32 Du 32 mm horizontally not less than 0.8 m from gas equipment in the boiler room on the designed gas pipeline Du 32 mm. Set the counter at a height of 1.6 m from the floor level.

Open the gas pipeline in accessible places and attach with hooks according to 5.9058 series.

The gas pipeline in places of passage through the walls of the building shall be enclosed in a case of steel pipes. Fill the space between the wall and the case with the entire thickness of the structure to be crossed. Seal the ends of the case with cement mortar. The ends of the case must protrude 5 cm beyond the walls according to the 5.90515 series.

Isolating cranes at the gas pipeline lowering to the gas instruments shall be installed at a height of 1.5 m from the floor level.

Baxi LUNA HT Residential 1.650 gas boiler is installed in the boiler room (connection to the gas pipeline is carried out by flexible hoses Du 20 mm) and storage water heater Baxi SAG2 195 T (connection to the gas pipeline is carried out by flexible hoses Du 10 mm).

A gas stove PG4 is installed in the kitchen room. Connection to the gas pipeline is carried out by flexible hose Dn 15 mm.

The gas pipeline shall be installed on welding. Threaded connections shall be provided only in places of installation of shut-off valves and connection of gas instruments.

The gas pipeline shall be installed in accordance with the plan of sheets GCW.2 and GCW.3 of this design.

After testing, paint the gas pipeline with oil paint in 2 times according to GOST 1420269.

During installation, the gas pipelines shall be located at a distance of at least 50 cm from the open wiring, electrical sockets and electrical switches in accordance with the requirements of SNiP 42012002 and PUE. If necessary, transfer the wiring.

In the room with gas equipment do not install the bath.

Welding, installation, testing and acceptance of the internal gas pipeline and gas equipment of the house shall be carried out in accordance with the requirements of SNiP 42012002, "Safety Rules for Gas Distribution and Gas Consumption Systems" PB 1252903.

6. Ventilation and exhaust of flue gases.

The removal of combustion products from domestic gas devices, furnaces and other domestic gas equipment, the design of which provides for the removal of combustion products to the chimney, should be provided from each device, unit or furnace along a separate chimney.

In the upper part of the windows of the kitchen and boiler room, install a window or opening frame.

Air inflow through the window or opening frame.

Drawing - through a louver grille 150x200 mm, emerging into a ventilation channel with a section of 140x270 mm at a height of + 2.700 meters from the floor level, made of silicate brick .

Combustion products removal from the boiler - through coaxial air duct-chimney ∅150/80

fabrication, installation in accordance with the manufacturer's instruction, with output through the wall, at a height of + 2.600 meters from the floor level.

Removal of combustion products from the water heater - through a separate smoke channel with a section of 140x270 mm (height at the point of entry into the chimney + 2.400 meters from the floor level), made of red brick. Connection of gas water heaters and other gas devices to chimneys should be provided by pipes made of roofing steel. The slope of the pipe should be assigned at least 0.01 towards the gas device. Height of the veins. channel + 9,700 meters from ground level. Below the point of connection of the smoke outlet pipe from the device to the chimneys, a "pocket" device with a cleaning hatch should be provided.

7. Gas pipeline test.

After construction and installation works, test the gas pipeline in accordance with the requirements of SNiP 42012002, "Safety Rules for Gas Distribution and Gas Consumption Systems" PB 1252903.

Underground low-pressure polyethylene gas pipeline, including the section of external low-pressure steel gas pipeline, with valves installed on it, shall be tested for tightness with air pressure of 0.3 MPa (3.0 kgf/cm2) and held for 24 hours.

The internal low-pressure gas pipeline with valves installed on it shall be tested for tightness with air pressure of 0.01 MPa (0.1 kgf/cm2) with holding for 5 minutes.

Clean the internal cavity of the pipeline before the leak test with compressed air. After testing to protect the gas pipeline from atmospheric corrosion, paint the pipeline with two layers of PF - 115 enamel, on two layers of GF primer - 021.

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