FOOD QUALITY AND SAFETY
FOOD SAFETY MANAGEMENT SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cross-connection
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back-flow
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Back-siphonage
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Floor drains
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Detailed explanation-1: -Definition of plumbing cross connection: a plumbing cross-connection is defined as any physical connection or arrangement between potable water and any source of contamination. Examples of cross connections are shown at left. Also see: DEFINITION of BACKFLOW & BACKFLOW PREVENTERS.
Detailed explanation-2: -What is backflow? Backflow is the flow through a cross-connection from a possible source of contamination back into the drinking water system. It occurs when a cross-connection is created and a pressure reversal, either as backsiphonage or backpressure, occurs in the water supply piping.
Detailed explanation-3: -Common examples of cross-connections include a garden hose submerged in a pesticide mixture, a piped connection providing potable feed water to an industrial process, such as a cooling tower, or a submerged outlet of an irrigation system. Connections to firefighting equipment are other very common cross-connections.
Detailed explanation-4: -Check valves are generally installed in pipelines to prevent backflow. A check valve is basically a one-way valve, in which the flow can run freely one way, but if the flow turns, the valve will close to protect the piping, other valves, pumps etc.