Environmental Engineering Reference
In-Depth Information
deny intrusion and are normally coupled with detection and assessment
technology. Keep in mind, however, that when it comes to trying to make
something absolutely secure from intrusion or attack there is no absolute
silver bullet.
Security Hardware and Devices
USEPA (2005) groups the water infrastructure security devices or products
described below into four general categories:
• Physical asset monitoring and control devices
• Water monitoring devices
• Communication/integration
• Cyber protection devices
Physical Asset Monitoring and Control Devices
Aboveground Outdoor Equipment Enclosures
Water and wastewater systems consist of multiple components spread over
a wide area and typically include a centralized treatment plant, as well as
distribution or collection system components that are usually distributed
at multiple locations throughout the community. In recent years, however,
distribution and collection system designers have favored placing critical
equipment—especially assets that require regular use and maintenance—
above ground. A primary reason for doing so is that locating this equip-
ment above ground eliminates the safety risks associated with confined
space entry, which is often required for the maintenance of equipment
located below ground. In addition, space restrictions often limit the amount
of equipment that can be located inside, and there are concerns that some
types of equipment (such as backflow-prevention devices) can, under certain
circumstances, discharge water that could flood pits, vaults, or equipment
rooms; therefore, many pieces of critical equipment are located outdoors and
above ground. Examples of the many different system components that can
be installed outdoors and above ground include
• Backlow-prevention devices
• Air release and control valves
• Pressure vacuum breakers
• Pumps and motors
