"Fire pumps are an essential part of many facilities' fire protection features. Whether they draw water from a stationary source, or boost the pressure from a tank or municipal supply, they should be protected in such a way that they will operate under the worst conditions. NFPA [National Fire Protection Association] 20, 'Standard for the Installation of Stationary Pumps for Fire Protection' requires that the fire pump, driver, controller, water supply, and power supply be protected against possible interruption of service through damage caused by explosion, fire, flood, earthquake, rodents, insects, windstorm, freezing, vandalism, and other adverse conditions."
Coffee Break Training - Fire Protection Series No. 2008-5
United States Fire Administration: http://www.usfa.fema.gov/