Standard for Installation of Fire Safety Devices based on Use and Occupancy Article 210

Outdoor hydrant shall comply with the following subparagraphs:1. The installation of piping, pressure test, outdoor hydrant , and effective water quantity shall apply mutais mutandis to the case as referred to in Article 39, 40.3~5, 41.2 and 3.2. The configuration of pressurization and water distributing devices, except that effective pressure release mechanisms shall be utilized when discharging pressure of a nozzle of outdoor hydrants exceeds 7kg/cm2 or 0.7Mpa, shall apply mutais mutandis to the case as referred to the provision of Article 42.3. The diameter shall be more than 63mm and the horizontal distance between each part of the periphery or outer wall of the protected object shall be less than 40 meters (inclusive), and at least two sets shall be configured.4. When cast iron pipe is used for piping, the iron pipes for pressure pipelines as prescribed in CNS832 or other pipes with equivalent strength shall be used and the nominal pressure shall be more than 16kg/cm2 or 1.6Mpa.5. Effective corrosion protection methods shall be applied to the pipes that are buried under the ground unless cast iron pipes are used.6. When all the outdoor hydrants are used simultaneously, the discharging pressure of each nozzle in hydrant shall be more than 3.5kg/cm2 or 0.35MPa (inclusive), and the water output more than 450L/min (inclusive). However, if there are more than 4 outdoor hydrants in use, the values shall be calculated supposing there are only 4 hydrants.7. The capacity of water source shall be more than the water output of all the outdoor hydrants continuously discharging for 30 minutes. However, if there are more than 4 outside hydrants in use, the values shall be calculated supposing there are only 4 hydrants.The provisions of Article 38 shall apply mutais mutandis to emergency power source of outdoor hydrant, and, additionally, the power capacity thereof shall be sufficient for working effectively for at least 45 minutes.