Municipal fire hydrant

(1)市政消火栓宜采用地上式室外消火栓;在严寒、寒冷等冬季结冰地区宜采用干式地上式室外消火栓，严寒地区宜增设消防水鹤。

(1) Municipal fire hydrants should use aboveground outdoor fire hydrants; Dry aboveground outdoor fire hydrants should be used in winter freezing areas such as severe cold, and fire water cranes should be added in severe cold areas.

当采用地下式室外消火栓，地下消火栓井的直径不宜小于1.5m，且当地下式室外消火栓的取水口在冰冻线以上时，应采取保温措施。地下式市政消火栓应有明显的性标志。

When using underground outdoor fire hydrants, the diameter of the underground fire hydrant well should not be less than 1.5m, and when the water intake of the underground outdoor fire hydrant is above the freezing line, insulation measures should be taken. Underground municipal fire hydrants should have obvious permanent markings.

(2)市政消火栓宜采用直径DN150的室外消火栓，并应符合下列要求。

(2) Municipal fire hydrants should use outdoor fire hydrants with a diameter of DN150 and meet the following requirements.

1)室外地上式消火栓应有一个直径为150mm或100mm和两个直径为65mm的栓口。

1) Outdoor aboveground fire hydrants should have one diameter of 150mm or 100mm and two outlets with a diameter of 65mm.

2)室外地下式消火栓应有直径为100mm和65mm的栓口各一个。

2) Outdoor underground fire hydrants should have one hydrant mouth with a diameter of 100mm and one hydrant mouth with a diameter of 65mm.

(3)市政消火栓宜在道路的一侧设置，并宜靠近十字路口，但当市政道路宽度超过60.0m时，应在道路的两侧交叉错落设置市政消火栓，市政桥桥头和城市交通隧道出入口等市政公用设施处，应设置市政消火栓，其保护半径不应超过150m，间距不应大于120m。

(3) Municipal fire hydrants should be installed on one side of the road and should be close to intersections. However, when the width of the municipal road exceeds 60.0m, municipal fire hydrants should be installed at intersections on both sides of the road. Municipal fire hydrants should be installed at municipal public facilities such as municipal bridge heads and urban traffic tunnel entrances and exits, with a protection radius of no more than 150m and a spacing of no more than 120m.

(4)市政消火栓应布置在消防车易于接近的人行道和绿地等地点，且不应妨碍交通。应避免设置在机械易撞击的地点，确有困难时，应采取防撞措施。距路边不宜小于0.5m，并不应大于2.0m，距建筑外墙或外墙边缘不宜小于5.0m。

(4) Municipal fire hydrants should be arranged in easily accessible pedestrian walkways and green spaces for fire trucks, and should not obstruct traffic. It should be avoided to set up in places where machinery is prone to collision. When it is indeed difficult, collision prevention measures should be taken. The distance from the roadside should not be less than 0.5m and should not be greater than 2.0m, and the distance from the exterior wall or edge of the building should not be less than 5.0m.

(5)当市政给水管网设有市政消火栓时，其平时运行工作压力不应小于0.14MPa，火灾时水力不利市政消火栓的出流量不应小于15L/s，且供水压力从地面算起不应小于0.10MPa。

(5) When a municipal water supply network is equipped with a municipal fire hydrant, its normal operating pressure should not be less than 0.14MPa. In case of a fire, the flow rate of the municipal fire hydrant with unfavorable hydraulic conditions should not be less than 15L/s, and the water supply pressure should not be less than 0.10MPa from the ground.

2.室外消火栓

2. Outdoor fire hydrant

(2)建筑室外消火栓的数量应根据室外消火栓设计流量和保护半径经计算确定，保护半径不应大于150.0m，每个室外消火栓的出流量宜按10～15L/s计算，室外消火栓宜沿建筑周围均匀布置，且不宜集中布置在建筑一侧;建筑消防扑救面一侧的室外消火栓数量不宜少于2个。

(2) The number of outdoor fire hydrants in a building should be determined based on the design flow rate and protection radius of the outdoor fire hydrant. The protection radius should not exceed 150.0m, and the outlet flow rate of each outdoor fire hydrant should be calculated at 10-15L/s. Outdoor fire hydrants should be evenly arranged around the building and should not be concentrated on one side of the building; The number of outdoor fire hydrants on one side of the building's firefighting surface should not be less than 2.

(3)人防工程、地下工程等建筑应在出入口附近设置室外消火栓，距出入口的距离不宜小于5m，并不宜大于40m;停车场的室外消火栓宜沿停车场周边设置，与一排汽车的距离不宜小于7m，距加油站或油库不宜小于15m。

(3) Buildings such as civil air defense engineering and underground engineering should have outdoor fire hydrants installed near the entrance and exit, with a distance of not less than 5m and not more than 40m from the entrance and exit; The outdoor fire hydrants in the parking lot should be set along the perimeter of the parking lot, with a distance of no less than 7m from a row of cars, and no less than 15m from a gas station or oil depot.

(4)甲、乙、丙类液体储罐区和液化烃罐罐区等构筑物的室外消火栓，应设在防火堤或防护墙外，数量应根据每个罐的设计流量经计算确定，但距罐壁15m范围内的消火栓，不应计算在该罐可使用的数量内。

(4) Outdoor fire hydrants for structures such as Class A, B, and C liquid storage tank areas and liquefied hydrocarbon tank areas should be installed outside the fire dike or protective wall. The quantity should be determined based on the design flow rate of each tank, but fire hydrants within 15m from the tank wall should not be included in the usable quantity of the tank.

(5)工艺装置区等采用高压或临时高压消防给水系统的场所，其周围应设置室外消火栓，数量应根据设计流量经计算确定，且间距不应大于60.0m。当工艺装置区宽度大于120.0m时，宜在该装置区内的路边设置室外消火栓。当工艺装置区、罐区、堆场、可燃气体和液体码头等构筑物的面积较大或高度较高，室外消火栓的充实水柱无法完全覆盖时，宜在适当部位设置室外固定消防炮。

(5) Places such as process unit areas that use high-pressure or temporary high-pressure fire water supply systems should have outdoor fire hydrants installed around them. The quantity should be determined based on the design flow rate through calculation, and the spacing should not exceed 60.0m. When the width of the process unit area is greater than 120.0m, outdoor fire hydrants should be installed on the roadside within the unit area. When the area or height of structures such as process unit areas, tank farms, storage yards, flammable gas and liquid docks is large or high, and the full water column of outdoor fire hydrants cannot be fully covered, it is advisable to set up outdoor fixed fire monitors in appropriate locations.