Section 578.5 - Precautionary Pressurization Measures(a) A rechargeable stored pressure type extinguisher shall be pressurized only to the charging pressure specified on the extinguisher nameplate. A regulated source of pressure, set no higher than 25 psi (172 kPa) above the operating (service) pressure, shall be used to pressurize fire extinguishers. An unregulated source of pressure, such as a nitrogen cylinder without a pressure regulator, shall never be used because the fire extinguisher could be over-pressurized and possibly rupture. A fire extinguisher shall never be left connected to the regulator of a high-pressure source for an extended period of time. A defective regulator could cause the container to rupture due to excess pressure.(b) The gauge used to set the regulated source of pressure shall be calibrated at least annually.Cal. Code Regs. Tit. 19, § 578.5
1. New section filed 3-4-92; operative 4-3-92 (Register 92, No. 15).
2. Renumbering of former section 578.5 to section 578.4 and renumbering and amendment of former section 578.6 to section 578.5 filed 12-27-2001; operative 1-1-2002 pursuant to Government Code section 11343.4 (Register 2001, No. 52). Note: Authority: Section 13160, Health and Safety Code. Reference: Section 13160, Health and Safety Code.
1. New section filed 3-4-92; operative 4-3-92 (Register 92, No. 15).
2. Renumbering of former section 578.5 to section 578.4 and renumbering and amendment of former section 578.6 to section 578.5 filed 12-27-2001; operative 1-1-2002 pursuant to Government Code section 11343.4 (Register 2001, No. 52).