"Class II standpipe hose systems are found in a variety of properties where occupants may be expected or may be able to provide suppression operations early in a fire. Unfortunately, this equipment often is subject to tampering by curious individuals or vandals, which then may affect its functionality. In the illustration, the 1 1/2-inch (38-millimeter) hose is stored on a pin rack assembly. Each hose fold is held in place by a small metal pin that falls aside when the hose is removed by the user. When water accumulates in one or more folds, it may bind the hose between the pin and rack to prevent it from being removed. The model fire codes require periodic inspection of these systems to identify and correct problems like this. National Fire Protection Association (NFPA) 25, Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems provides guidance for the inspector. According to NFPA 25, hose and cabinets should be inspected annually, and nozzles should be inspected annually and after each use. Any signs of mildew, cuts, abrasions, deterioration or other damage to the hose is a trigger to replace it. Damaged couplings or hose stations should be repaired or replaced. Hose that is improperly racked or rolled should be removed and returned in its proper position. The hose should be reracked, rereeled or rerolled so that any folds do not occur at the same position on the hose"
Coffee Break Training - Fire Protection Series No. FP-2014-25
U.S. Fire Administration: http://www.usfa.fema.gov/