Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.
Q: How To Save Undamaged Food Packages Exposed to Flood Water. 1 Remove the labels, if they are the removable kind, since they can harbor dirt and bacteria. 2 Brush or wipe away any dirt or silt. 3 Thoroughly wash the cans or retort pouches with soap and water, using hot water if it is available. Follow these steps to keep your WATER SAFE during and after flood conditions. 1 Only use water from a safe source for drinking and washing or preparing food. 2 Use bottled water that has not been exposed to flood waters, if it is available. 3 If you don't have bottled water, you should boil or disinfect water to make it safe. In the refrigerator, highly perishable food will usually be keep safely cold for about 4 hours, depending on the kitchen temperature. If the power will be out longer, place dry or block ice in the refrigerator to keep it as cold as possible. After Power Outage. NEVER taste a food to determine its safety. That will keep the cold in better. A chest freezer will keep cold in better than an upright. When you open an upright, it loses cold air due to gravity. (heat rises, cold descends). A chest keeps most of that cold air in it. And if you open a freezer a lot when the power is out, it will thaw faster. I would guess about 2 days is safe, but as long as the food is frozen, I would continue to trust it. When it starts getting a little soft, then you better either plan to eat a lot, or throw it out, or get a generator. This helps the food stay cold longer. Have coolers on hand to keep refrigerated food cold if the power will be out for more than 4 hours. Purchase or make ice cubes in advance, and freeze gel packs ahead of time. Store all of these in the freezer for future use in the refrigerator or in coolers. It might last about a day or two, depending on how long before the power went off it was last opened, as well as how long you keep it closed after. It depends on the kind of food. If is rice almost 24 hours, if is milk no more than 6 hours, cheese 2 days. How i said before it depends in the kind of food and most important of all how many times do you open and close the refrigerator all that I said before is if you keep the refrigerator close. When the Power Goes Out . . . Here are basic tips for keeping food safe: Keep the refrigerator and freezer doors closed as much as possible to maintain the cold temperature. The refrigerator will keep food cold for about 4 hours if it is unopened. Typically three days, if you don't open it at all. However, in the middle of winter if your power goes out and the ambient temp in the house is below 32 degrees F, the food will last and last, as I found out when our house caught fire in December 2004. Refrigerated food should be safe as long as the power was out for no more than 4 hours and the refrigerator door was kept shut. Discard any perishable food (such as meat, poultry, fish, eggs, or leftovers) that has been at temperatures above 40 F for 2 hours or more (or 1 hour if temperatures are above 90 F). Prepare Yourself Before Power Emergencies. 1 Make sure you have appliance thermometers in your refrigerator and freezer. 2 Freeze containers of water for ice to help keep food cold in the freezer, refrigerator, or coolers in case the power goes out. If your normal water supply is contaminated or unavailable, the melting ice will also supply drinking water. Freeze refrigerated items such as leftovers, milk, and fresh meat and poultry that you may not need immediately. Query: how long will food stay frozen when my power goes.out
A:
The refrigerator will keep food cold for about 4 hours if it is unopened.