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• Impact test - The UL impact test calls
for the safe to be heated to 1550 degrees for
30 minutes (1638 degrees for a 2-hour fire rated
safe) then dropped onto concrete rubble from
a height of 30 feet. The safe is then turned
upside down and reheated for another 30 minutes
(45 minutes for a 2-hour fire rated safe). During
this process, it must maintain its integrity
and protect all contents in order to pass the
UL impact test.
• Explosion hazard test - All UL fire-rated
safes must undergo this test, during which the
unit is inserted into a pre-heated 2000 degree
oven. If the safe is not constructed properly,
the rapid heating will likely cause an explosion.
• FR - Fire resistant, unrated insulated
safe - This product is awaiting UL approval.
• Class 350 1/2-hour fire rating - During
this test, the safe is heated for one-half hour
to reach an exterior temperature of 1550 degrees.
Because paper will begin to char at approximately
400 degrees, the unit being tested must maintain
an interior temperature of less than 350 degrees
during heat-up and cool-down testing in order
to earn its rating.
• Class 350 1-hour fire rating - To earn
this rating, the safe is heated for one hour
to reach an exterior temperature of 1550 degrees,
then put through the cool-down test. During
this time the safe must maintain an interior
temperature of less than 350 degrees.
• Cool-down test - This procedure is a
key part of UL's fire testing procedures. After
a one- or two-hour fire rating test, the safe
is left in the oven for cool-down time with
the heat turned off. Because of the intensive
heat of one- and two-hour tests, the temperature
inside the safe will continue to rise for up
to one hour after the oven is turned off. To
pass UL testing, the safe's interior temperature
may not exceed 350 degrees at any time during
heat-up or cool-down procedures.
• Class 350 1-hour fire & impact label
- The safe has passed both UL impact testing
and Class 350 1-hour fire testing (see above).
• Class 350 2-hour fire rating - The safe
is heated for two hours to reach an exterior
temperature of 1550 degrees and must maintain
an interior temperature of less than 350 degrees
to earn this rating. Class 350 2-hour rating
and impact label - The safe has passed both
UL impact testing and Class 350 2-hour fire
testing (see above). |
