Is mechanical refrigeration allowed to be turned off at night during a temporary event?

Mechanical refrigeration is crucial for maintaining food safety, particularly during temporary events where food may be exposed to warmer temperatures for extended periods. Keeping refrigeration units operational at all times is essential to prevent the growth of harmful bacteria, which can thrive in food left at unsafe temperatures.

Refrigeration systems are designed to keep perishable food items at or below 41°F (5°C). If these systems are turned off, even for a brief period such as overnight, the temperature inside the unit can rise to levels that allow bacteria to multiply, potentially leading to foodborne illness. Therefore, it is critical that refrigeration remains on at all times to protect the integrity of the food being stored and served.

While there are considerations for other scenarios involving food preservation or the presence of cooked items, these do not negate the fundamental requirement that refrigeration must remain operational to ensure food safety.