NFPA 10 - Standards for Portable Fire Extinguishers 2023 EXAM WITH 100% CORRECT ANSWERS

The A rating is a water equivalency rating. Each A is equivalent to ________ of water. Answer: 1 1/4 gallons. Note that 4A = 5 gallons of water. The ________ rating is equivalent to the amount of square footage that the extinguisher can cover, handled by a professional. Answer: B:C Note that 20 B:C = 20 square feet of coverage. C indicates it is suitable for use on ________ ________ ________. Answer: electrically energized equipment. 8.8 Condemning Extinguishers 8.8.1 Fails Test or Examination When a fire extinguisher cylinder, shell, or cartridge fails a hydrostatic pressure test or fails to pass a visual examination as specified in 8.4.2, it shall be condemned or destroyed by the owner or the owner's agent. 8.4.2* Examination of Cylinder Condition Where a fire extinguisher cylinder or shell exhibits one or more of the following conditions, it shall not be hydrostatically tested but shall be condemned or destroyed by the owner or at the owner's discretion: A.8.4.2 A condemned cylinder or fire extinguisher can be destroyed only by its owner or at the owner's discretion. It is strongly recommended that a record be kept of cylinders or fire extinguishers that are recommended to be destroyed. (1)* Where repairs by soldering, welding, brazing, or use of patching compound exist A.8.4.2(1) For welding or brazing on mild steel shells, consult the manufacturer of the fire extinguisher. (2) Where the cylinder threads are worn, corroded, broken, cracked, or nicked (3) Where corrosion has caused pitting, including pitting under a removable nameplate or nameband assembly (4) Where the fire extinguisher has been exposed to excessive heat, flame, or fire (5) Where a calcium chloride-type extinguishing agent has been used in a stainless steel fire extinguisher (6) Where the shell is of copper or brass construction joined by softer solder or rivets (7) Where the depth of a dent exceeds 1/10 of the greatest dimension of the dent if not in a weld or exceeds 1/4 in. (6mm) if the dent includes a weld (8) Where any local or general corrosion, cuts, gouges, or dings have removed more than 10 percent of the minimum cylinder wall thickness (9) Where a fire extinguisher has been used for any purpose other than that of a fire extinguisher 8.8.1.1 When a cylinder is required to be condemned, the retester shall notify the owner in writing that the cylinder is condemned and that it cannot be reused. 8.8.1.2 A condemned cylinder shall not be repaired. 8.8.2 Marking Condemned Extinguishers 8.8.2.1 Condemned cylinders shall be stamped "CONDEMNED" on the top, head, shoulder, or neck with a steel stamp. 8.8.2.2 No person shall remove or obliterate the "CONDEMNED" marking. 8.8.2.3 Minimum letter height shall be 1/8 inch. (3 mm) ...