Chapter 11 Flashcards
Porosity
Porosity is the extent to which a material will absorb liquids. Avoid high-porosity flooring. Its absorbency often makes it ideal for pathogen growth.
Resiliency
Resiliency refers to the type of flooring, this means that the material can react to a shock without breaking or cracking.
Coving
Coving is a curved sealed edge placed between the floor and the wall to eliminate sharp corners or gaps that would be impossible to clean. Coving is required in operations using resilient or hard-surface flooring materials.
NSF
The NSF is an organization that creates these national standards. NSF is accredited by the American National Standards Institute (ANSI). NSF/ANSI standards for food equipment require that it be nonabsorbant, smooth, and corrosion-resistant. Food equipment must also be easy to clean, durable, and resistant to damage. The NSF mark will appear on equipment that meets these standards.
Potable
Drinkable water. This water may come from the following sources: Approved public water mains, Private water sources that are regularly tested and maintained, closed portable water containers, and water transplant vehicles.
Booster Heater
A booster heater is for maintaining water temperature. Mnay dishwashing machines now come with booster heaters. Most general-purpose water heaters will not heat water to temperatures required for hot-water sanitizing.
Cross-Connection
A cross-connection is a physical link between safe water and dirty water, which can come from drains, sewers, or other wastewater sources. This is the greatest challenge to water safety.
Backflow
A cross connection is dangerous because it can let backflow occur. Backflow is the reverse flow of contaminants through a cross-connection into a drinkable water supply. Backflow can be the result of pressure pushing contaminants back into the water supply.
Backsiphonage
When high water use is one area of an operation creates a vacuum in the plumbing system that sucks contaminants back into the water supply.
Vacuum Breaker
A vacuum breaker is a mechanical device that prevents backsiphonage. It does this by closing a check value and sealing the water supply line shut when water flow is stopped.
Air Gap
An air gap is an air space that separates a water supply outlet from a potentially contaminated source. A sink that is correctly designed and installed usually has two air gaps. One between the faucet and the flood rim of the sink. The other is between the drainpipe of the sink and the floor drain of the operation.
Five requirements for hand washing stations
Hand washing stations should include hot and cold running drinkable water, soap, and a way to dry hands. They should also include a garbage container in paper towels are provided, and signage reminding staff to wash hands before returning to work.
