불화단백포1 포 소화약제의 종류 (Foam System) 포 소화약제의 종류 (Foam System) 3.1 팽창비 (Expansion Ratio) Low-expansion foam — expansion up to 20 Medium-expansion foam — expansion from 20 to 200 High-expansion foam — expansion from 200 to approximately 1000 NFPA 11 5.1* Types of Hazards. This chapter shall cover design information for the use of low-expansion foam to protect outdoor storage tanks, interior flammable liquid hazards, loading racks, di.. 2023. 9. 21. 이전 1 다음
