Critical limits for storage of chilled and frozen food

Hi everyone, is there any limit time as tolerance associate with temperature limit (CCP) for cold and frozen storage of foods?References normally only refers to temperature, example 5-7C critical limit for chilled and -18C for frozen products. Is there any tolerance time for eventual temperature fluctuation that exceed the limit for a short time? 1hour? 4 hours? I cannot find reference for that time tolerance.

Perishables should not be stored out of temp no longer than 2 hrs.

I hope this article helps

https://web.uri.edu/...-for-safe-food/

Hi everyone, is there any limit time as tolerance associate with temperature limit (CCP) for cold and frozen storage of foods?References normally only refers to temperature, example 5-7C critical limit for chilled and -18C for frozen products. Is there any tolerance time for eventual temperature fluctuation that exceed the limit for a short time? 1hour? 4 hours? I cannot find reference for that time tolerance.

Set both activities as PRPs as implied per iso22002-1 so no need for "Critical Limits".

For chilled storage, recommended limits may vary with geographical location, for example, IIRC in UK target for a refrigerator is <5degC but max acceptable 8degC. For USA IIRC absolute max is 4.4degC.

For frozen storage, IIRC, EC allow "short intervals" of cold storage air temperature up to -15 (maybe -16) degC. (eg when fan coils are defrosting)

References from memory on FSA, EC and FDA websites respectively.

afaik, chilled storage temperature limits are typically not (time) associated with deviations exceeding maximum.