Breaking News

Residence Fireproof Safe Scores – How to Decide If Your Safe and sound is Fireproof

Residence Fireproof Safe Scores – How to Decide If Your Safe and sound is Fireproof

Want to Blow Up a Protected?

With these exams for your home fireproof safe, it could explode. This write-up tells you how to test a fireproof dwelling safe and sound to figure out if it satisfies the criteria for fireplace resistant scores established by The Underwriters Laboratories. Please observe that I use the phrase fireproof interchangeably with fireplace resistant, technically they are not interchangeable. I also endorse that you do not truly try out this in your individual house. It is considerably way too highly-priced and risky.

Product Wanted

1. You will need a minimum of two similar household fireproof safes. You will need a 3rd fireproof property safe if you want to do the explosion exam by by itself.

2. Select some paperwork that you can use for a test. Make sure it is a little something that you can spare but do not use blank paper in any other case you will never know if is readable or not. I’ve contemplated using my BS diploma in electrical engineering. I have not utilised it for several years. If you are tests a media safe, then you could want some CDs that you acquired for Christmas and can not stand. Try a flash travel and memory stick also.

3. You can expect to want a furnace major sufficient to heat one protected at a time. If you’ve watched MacGyver or the A Crew, I am positive you can improvise. Otherwise verify out a nearby pottery kiln.

4. Get some protective gear. Oven mitts will not do well opening a risk-free that has been heated to 2,000 levels F.

5. By some means, you will have to have to discover some thermometers and recording equipment that will allow you know the interior temperature in the fireproof protected. I never think an Oregon Scientific temperature station will function unless you are tests for the UL 125 score. It will also want to measure humidity.

6. You will also need to have to measure the exterior temperature of the safe. Fantastic luck discovering a low-priced thermometer that goes to 2,000 degrees.

7. Oh, I virtually forgot. You will possibly will need a small crane to hoist your household fireproof protected 30 ft in the air while it is even now scorching. A rapid launch will also be essential for the drop take a look at.

8. At the base of the drop examination, you will want a pile of bricks on a cement slab.


Assuming you have been equipped to assemble all the content over, it may be very good to uncover out what the various UL rankings mean and the criteria that will determine a effective take a look at. Each and every of the scores can be utilised for a fireproof protected but it is meaningless unless you specify how prolonged the safe and sound will satisfy the conventional.

UL 350 – The secure will have to hold the inside temperature underneath 350 degrees Fahrenheit. Which is beneath the typical temperature for most paper items to burn off, char or turn into worthless.

UL 150 is the score for tapes, cartridges, microfiche, and microfilm. In addition to keeping the inside at or beneath 150 degrees, the humidity need to be underneath 85%.

UL 125 is the typical for diskettes. In this scenario, the temperature cannot exceed 125°F and 80% humidity. I have a emotion that this common is a little bit out of date for the reason that most people really don’t retailer diskettes any longer.

Warmth Exam

The first check is to see if your fireproof property secure will secure the contents for the specified duration of time. You require to get started at standard place temperature and humidity. Load your secure with your take a look at content and haul it about to your furnace.

Warmth your furnace to the subsequent temperatures (all Fahrenheit) for the take a look at you want to operate then set the secure in the furnace. Be careful, when Shadrach, Meshach and Abednego ended up tossed into a tremendous heated furnace, the men assigned to the activity had been killed from the warmth.

o 1,550 for a ½ hour rated harmless
o 1,700 for a 1 hour rated risk-free
o 1,850 for a 2 hour rated safe
o 1,920 for a 3 hour rated safe
o 2,000 for a 4 hour rated secure

Go away your dwelling fireproof secure in the furnace for ½ to 4 hrs. Right here arrives the kicker. You should not get rid of the secure following the allotted time, only transform off the heat and permit it interesting down inside of the furnace. If you have a genuinely good furnace, like the types that the men at UL have, that would take up to 68 several hours.

You are going to want to file the inside temperature all through the warmth up and cool down section. If it goes earlier mentioned the rating, your home fireproof safe flunked the check. When it will get cool ample to open up, you will need to check your test contents to make positive they are even now great.

Effects Exam

I imagine the heat take a look at was somewhat uninteresting. The effects examination is a large amount a lot more exciting and will not acquire as very long. For this test, you require your 2nd household fireproof protected. Get started the exact as just before but the instances and temperatures in the furnace will be considerably less.

o 20 minutes at 1,460 degrees for a ½ hour rated secure
o 30 minutes at 1,550 degrees for a 1 hour rated protected
o 45 minutes at 1,640 for a 2 hour rated safe
o 60 minutes at 1,700 for a 3 and 4 hour rated safes

This aspect sounds like a Television set recreation show. You now have 2 minutes to get the secure out of the furnace, raise it 30 toes in the air and fall it onto your pile of bricks. If you can see the insides by means of any cracks or the door, your fireproof risk-free flunked the next exam. Nevertheless, if it nevertheless seems to be Alright you aren’t completed nevertheless.

Convert your harmless upside down and reheat it once more. This time you can clear away it from the furnace and enable it great. Open the secure and analyze the contents. If every thing is Ok, which includes no damage due to humidity, you are virtually finished.

Explosion Exam

If you are a enthusiast of Mythbusters on Tv, then this has the prospective of becoming the most enjoyable. If you only purchased two safes, then you will want to do this before you do the fall exam.

Get started with an vacant fireproof dwelling safe and sound. Heat it to 2,000 levels then open up it and things the examination files, CDs or other material in actually fast. Slam the doorway shut and maintain the exterior at 2,000 levels for an additional 30 minutes. If your protected hasn’t exploded you are just about carried out. As soon as it has cooled ample to make sure you can cope with it, open your dwelling fireproof risk-free and make positive your paperwork are nonetheless Okay.

Congratulations, you have just proved that your residence fireproof risk-free is certainly fireplace resistant.

Mythbusters Check

None of your safes are any superior any more so this is for these who like to see matters blow up. Get a stick of dynamite and… No, I am not likely there. An individual may well accuse me of endangering folks.


It is a whole lot more cost-effective and safer to just glance inside your safe and sound and see if it has a UL sticker.