Design of fire extinguishing system for apartment building
Our design organization has developed the working documentation of the fire extinguishing system for the apartment building of the residential complex.
DESIGNING FIRE EXTINGUISHING WATER
1. This working documentation of Book 1 of Volume VII of the installation of an internal fire-prevention water supply system with attached sprinklers is designed for building NB 1.3 (new construction).
2. The calculation of fire extinguishing installations was made in accordance with SP5. 13130.2009 "Automatic fire alarm and fire extinguishing installations. Design standards and rules", SNiP2.04.01-85 * "Internal water supply and sewerage of buildings", SP 10.13130.2009. "Fire protection systems. Internal fire water supply. Fire safety requirements."
3. Pipelines are designed from water-gas pipes according to GOST 3262-75 and electric-welded pipes according to GOST 10704-91. Connect the pipelines to flange and socket joints of the company "GRINNELL".
Before carrying out installation work for these pipelines, in the joints, to provide grooves (slots).
4. The color of the components of fire extinguishing installations, including pipeline communications, must comply with GOST 12.4.026, GOST 50680, GOST 14202:
- water filled pipelines of sprinkler AUP, as well as water filled pipelines of the internal fire water supply system are painted green (clause 5.7.21 SP5.13130.2009);
- unfilled pipelines are painted in blue color (paragraph 5.7.21 SP5.13130.2009).
Technical means of AUP (except for sprinklers, measuring devices and pipelines) should be painted in red color according to GOST 12.4.009, GOST R 12.4.026, GOST R 50680 and GOST R 50800 (p.5.8.3 SP5.13130.2009).
5. According to SP5.13130.2009, the distance from the center of the heat-sensitive element of the heat lock of the sprinkler sprinkler to the overlap plane must be within (0.08 to 0.30) m; in exceptional cases, it is allowed to increase this distance to 0.40 m. (Section 5.2.11 SP5.13130.2009).
6. Fastenings of pipelines during installation shall be carried out in accordance with the requirements of section 5.7 of the joint venture 5.13130.2009, joint venture 73.13130.2012, SNiPZ.05.05 and BCH25.09.67
The distance between the means of fastening pipelines on horizontal sections is necessary in accordance with the dimensions specified in Table 2 (p. 6-1.4 SP73.13130.2012).
7. The distance from the holder to the last sprinkler on the distribution pipe for pipes with a diameter of DN25 and less should be no more than 0.9 m, and more than DN25 - no more than 1.2 m
8. Taps on distribution pipelines with a length of more than 0.9 m must be attached an additional distance from the holder to the sprinkler on the outlet should be:
- for pipes with a nominal diameter of 25 mm and less - not more than 0.9 m,
- for pipes with a nominal diameter of more than 25 mm - 1.2 m (Section 5.7.31 SP5.13130.2009).
9. Feed and distribution pipelines of installations should be laid with a slope or discharge devices of at least:
- 0.01 for pipes with a nominal diameter less than DN50;
-0.005 for pipes with a nominal diameter of DN50 and more.
10. Bypass valve between the inputs of the internal fire pipe
11. The symbol number of the detector flow of fluid - ALE-X / X.X / X
Liquid flow detector TYCO
Sprinkler water sprinkler with flat socket TY-B TY325 1/2 ", K-80, t = 68 C °, standard response, 5mm flask, the company" TYCO "
Sprinkler water sprinkler hidden TY3551 (RFII) 1/2 ", K-80,1 = 68 C", standard response, 5 mm bulb, installation in a suspended ceiling, the company "TYCO"
Water Automatic Fire Extinguishing System Pipeline
Pipeline of the internal fire line
Vertical pipeline with the direction of flow of the working medium: up down from the top above
Fire cock
Gate valve
Butterfly valve with limit switch
The slope of the pipeline is less than Du-50
The slope of the pipeline DN-50 and more
14. According to STU ... and project documentation for NB1.1, NB1.2, NB1.3, NB2, NB3 buildings, the protection of day-to-day service premises is not required and is performed by the customer,
Water supply source: city pipeline, which provides for the needs of the automatic fire control system, taking into account the operation of automatic drencher curtains and fire hydrants, the flow rate is 82.0 l / s (dictating the flow rate in the underground parking), besides all other needs, around the clock, uninterruptedly on weekends and holidays, at min = 10 m
The main water feeder: pumps of the company "GRUNDFOS type CR150-3-2 with an electric motor" MG "N = 30kBt with a capacity of 150.12 m3 / h at a design head of 51 m (1 working, 1 standby), serve the internal fire-fighting water supply of the above-ground part of buildings: 1.1, 1.2, 1.3,2,3,
4 (HB1), 5 (HB2), as well as automatic fire extinguishing installation of the underground part of the building 4 (HB1) - minus 1 floor.
Automatic water feeder: - drinking and drinking water supply with a flow rate of 1 l / s and with guaranteed backwater Hmin = 10M
with a feed pump jockey CR 3-9 with capacity ZmZ / h at rated head 48m, with motor “MG” N = 0.75 kW and intermediate capacity Refix DE-60 PN10 bar of the company ’’ Reflex ”.