Design of sewage built-in gas boiler for administrative building
Our company has developed working documentation for the gas boiler house built into the administrative building. A set of documentation was developed: gas supply, heat mechanics, automation, power supply and lighting, ventilation, cost estimates, including water supply and sewerage.
DESIGN OF WATER SUPPLY
The building provides for the installation of a gas boiler room for the needs of the heating facility. Earlier, the building was designed and installed a water supply hoses from steel water gas pipes d15-25mm, the input to the building was made from pressure pipes PND d32, type C.
Water supply to the boiler house is provided from the existing water mains of the building (B1).
By fire resistance the building belongs to the II degree, the category of the room of the boiler house for fire hazard category G.
Internal fire extinguishing of the boiler house in accordance with SP 89.13130.2012, p. 18.9 and SP 10.13130.2009 is not provided.
External fire suppression of the building according to SP 8.13130.2009, Table 3 is 10 l / s.
The water in the boiler room in the building consumes the heating system, for the needs of chemical. water treatment.
Water consumption for own needs of the boiler house is:
to feed the heating network - 0.06 m3 / day; 0.02 m3 / h; 0.02 l / s.
for the needs of HVO (regeneration and flushing): 0.64 m3 / day; 0.40 m3 / h; 0.12 l / s; 15.36 m3 / year.
Regeneration of the filters is carried out no more than 2 times a month.
The boiler house is supplied from the internal water supply networks of the building.
The guaranteed pressure - 25m, the required pressure at the entrance to the building is 14.50 m.
To account for the water consumption for the needs of the boiler house, it is planned to install a water metering unit with a wing counter CXB 15.
Internal water supply networks are provided from steel water-gas galvanized normal pipes Æ15x2.8 ... 20x2.8mm according to GOST 3262-80, laid on the building structures with a slope of 0.002 in the direction of water points.
After installation and testing, steel pipelines are painted in 2 layers with PF-115 enamel (GOST 9109-71 *) over GF-021 soil (GOST 25129-82 *).
DRAINAGE PROJECT
The building is equipped with a domestic sewage system (K1).
The boiler room provides for a sewage system with discharge of waste water into existing household sewage networks Æ100mm.
Emergency emissions of water from boilers and drains from chemical plants are dumped into the household sewage system from the boiler house. water treatment.
Water drains from the boiler house mainly from water treatment. Regeneration and washing of filters is performed no more than twice a month, i.e. about 24 times a year.
The calculated discharge of wastewater from the HVO is:
0.64 m3 / day; 0.40 m3 / h; 0.14 l / s; 15.36 m3 / year.
Sewer networks from the boiler house are provided from cast-iron sewer pipes Æ100mm according to GOST 6942-91 and steel electric-welded pipes Æ40mm according to GOST 10704-91.
Discharge of water from boilers and HVO are provided for in the ladder and further to the existing domestic sewer riser
Cast-iron sewage pipelines after installation and testing are painted Kuzbasslakom (GOST 5631-79).
After installation and testing, steel pipelines are painted in 2 layers with PF-115 enamel (GOST 9109-71 *) over GF-021 soil (GOST 25129-82 *).