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A common rating for gun safes is "350-1 hour" or "350-2 hour", which means that when the safe is in a fire, the inside will not get warmer than 350 degrees Fahrenheit for 1 or 2 hours. [16] [20] It has been noted that fireproof safes may be insecure against unauthorized entry. [21]
This rating is the requirement in data safes and vault structures for protecting digital information on magnetic media or hard drives. Temperatures inside the protected chamber must be held below 125 °F (52 °C) for the time period specified, such as Class 125-2 Hour, with temperatures up to 2,000 °F (1,090 °C) outside the vault.
UL provides a variety of fire rating classifications, 125, 150, and 350 representing the maximum internal temperature in degrees Fahrenheit the safe may not exceed during the test. The classifications come in durations from 1 ⁄ 2-hour to 4 hours in length. The safe is exposed to gradually higher temperatures depending on the duration of the test.
The factory side entrance of the Linden Avenue plant in Rochester, NY. At the base of the silos are a furnace (used to fire-test safes) and a rock pit (used for drop-testing safes from a height of 30 ft.) Brush & Co. moved into a new plant at 900 Linden Avenue in Rochester in 1968, with over 50,000 sq ft (5,000 m 2). In 1987, it began doing ...
Canada de-rates closures, where, for instance a 2-hour closure is acceptable for use in a 3-hour fire separation, so long as the fire separation is not an occupancy separation or firewall. The lowered rating is then referred to as a fire protection rating, both for firestops, unless they contain plastic pipes and regular closures. Firestops ...
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