Principles of Food Sanitation

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Troubleshooting tips..............................................................................


●Discoloration of floors: To restore the
original color of darkened concrete
floors, spread a bleach solution on them
and allow it to stand for at least 30 min-
utes. Then, a mechanical scrubber can
be incorporated.
●White film buildup on equipment: This
condition is caused when too much
cleaning compound is used, when the
equipment is not being properly rinsed,
or when the water is hard.
●Conveyor wheels freezing: The cleaning
water temperature is probably too high.
Wheels lose lubricant at about 90ºC.
The cleaning temperature should not
exceed 55ºC.
●Sewer lines plugged: Sediment bowls are
probably not being cleaned daily and/or
floor sweepings are being flushed into
sewer pipes.
●Yellow protein buildup on equipment:
This condition may be caused by water
temperature used in cleaning being too
high. Brushing away all organic material
will remove daily buildup. If heated soil
is allowed to remain long on equipment,
however, rubbing with steel wool will
remove it.To avoid trouble, do not spray:
liver slicers, cube steak machines, elec-
tronic scales, patty machines, any elec-
trical outlet, motor, or equipment with
open connections (cover all possible
outlets with polyethylene bags), wrap-
ping film or containers, or wrapping
units.

Pre-Operation Flood
Sanitizing Considerations
Flood sanitizing is applying a sanitizer at
a high flow rate. This allows a flow rate
capable of flushing off soils and penetrating
cracks and crevices with sanitizer solution
without taxing the water supply.


Sanitizer compounds can either be injec-
ted at the hose station or sanitizer solution
can be pumped through a central piping sys-
tem. From a cost and durability standpoint,
wall mounted sanitizer stations with dual
orifice inlets for sanitizer selection provide
the best results. Central sanitizing system
concentrations (ppm) are difficult to change
and require pumps, control panels, and a
separate piping layout.
According to Carling-Kelly (2003), most
modern production areas can be physically
cleaned relatively soil free during the sanita-
tion process. But, recontamination issues can
become apparent during the pre-op or start-
up phase of production.
This contamination is caused by several
factors:


  1. Poor consistency during final rinse-
    inspection by sanitation operators
    before pre-op. This problem may be
    caused by a short sanitation window or
    lack of trained sanitors to perform the
    final inspection.

  2. Area or equipment recontamination
    during the actual pre-op inspection
    and set-up process before production
    begins. This complication is caused
    during the set-up process by bringing
    in supplies, preparing equipment for
    operation, and the influx of person-
    nel getting the area ready for produc-
    tion.


Whatever the recontamination cause, two-
stage flood sanitizing will provide a more
effective method for controlling area results
during this critical start-up time. The sani-
tizer solution should be applied at tap water
temperature to reduce condensation poten-
tial in refrigerated areas. The basic concept is:
First Step:
Use wall mounted sanitizer injectors (or a
central sanitize system) to flood all surfaces
in the production room with 600 to 800 ppm

324 PRINCIPLES OFFOODSANITATION

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