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Home Fireproof Safe Ratings – How to Determine If Your Safe is Fireproof

Home Fireproof Safe Ratings – How to Determine If Your Safe is Fireproof

Want to Blow Up a Safe and sound?

With these tests for your household fireproof protected, it could explode. This report tells you how to check a fireproof residence harmless to determine if it satisfies the standards for fire resistant ratings founded by The Underwriters Laboratories. Remember to take note that I use the phrase fireproof interchangeably with fireplace resistant, technically they are not interchangeable. I also endorse that you do not actually attempt this in your very own property. It is significantly way too pricey and dangerous.

Substance Needed

1. You will will need a bare minimum of two equivalent home fireproof safes. You will require a 3rd fireproof home safe and sound if you want to do the explosion take a look at by alone.

2. Find some documents that you can use for a check. Make positive it is a thing that you can spare but do not use blank paper or else you will never know if is readable or not. I’ve contemplated employing my BS degree in electrical engineering. I have not utilised it for years. If you are testing a media protected, then you may possibly want some CDs that you acquired for Xmas and can’t stand. Check out a flash push and memory adhere also.

3. You can expect to have to have a furnace significant more than enough to heat one particular risk-free at a time. If you have watched MacGyver or the A Group, I’m sure you can improvise. In any other case check out a area pottery kiln.

4. Get some protecting gear. Oven mitts will not do well opening a safe that has been heated to 2,000 levels F.

5. Someway, you will will need to come across some thermometers and recording equipment that will enable you know the interior temperature in the fireproof harmless. I you should not imagine an Oregon Scientific weather conditions station will work until you are screening for the UL 125 score. It will also want to evaluate humidity.

6. You will also have to have to measure the exterior temperature of the risk-free. Great luck obtaining a affordable thermometer that goes to 2,000 levels.

7. Oh, I nearly forgot. You will possibly need to have a modest crane to hoist your dwelling fireproof safe 30 ft in the air whilst it is continue to incredibly hot. A fast launch will also be necessary for the fall check.

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


Assuming you have been ready to assemble all the substance previously mentioned, it may well be fantastic to uncover out what the various UL scores indicate and the requirements that will ascertain a productive check. Every of the rankings can be utilized for a fireproof protected but it is meaningless unless you specify how long the risk-free will satisfy the normal.

UL 350 – The harmless need to maintain the inside temperature down below 350 degrees Fahrenheit. Which is down below the ordinary temperature for most paper solutions to burn off, char or become ineffective.

UL 150 is the ranking for tapes, cartridges, microfiche, and microfilm. In addition to keeping the interior at or under 150 degrees, the humidity will have to be under 85%.

UL 125 is the standard for diskettes. In this scenario, the temperature can not exceed 125°F and 80% humidity. I have a emotion that this common is a bit out of date since most individuals you should not retail store diskettes any more.

Heat Exam

The initial exam is to see if your fireproof home safe will safeguard the contents for the specified size of time. You require to start at regular room temperature and humidity. Load your risk-free with your check material and haul it above to your furnace.

Warmth your furnace to the pursuing temperatures (all Fahrenheit) for the examination you want to operate then place the safe in the furnace. Be very careful, when Shadrach, Meshach and Abednego have been tossed into a super heated furnace, the men assigned to the job were killed from the heat.

o 1,550 for a &frac12 hour rated risk-free
o 1,700 for a 1 hour rated protected
o 1,850 for a 2 hour rated protected
o 1,920 for a 3 hour rated risk-free
o 2,000 for a 4 hour rated secure

Leave your property fireproof safe in the furnace for &frac12 to 4 several hours. Here comes the kicker. Never clear away the safe and sound soon after the allotted time, just flip off the heat and let it amazing down inside of the furnace. If you have a actually very good furnace, like the types that the guys at UL have, that would consider up to 68 hours.

You can need to have to report the interior temperature throughout the warmth up and great down period. If it goes above the score, your house fireproof safe and sound flunked the check. When it receives great plenty of to open, you will require to check out your examination contents to make confident they are nevertheless excellent.

Effect Exam

I feel the heat check was somewhat monotonous. The influence take a look at is a whole lot much more enjoyment and won’t choose as lengthy. For this test, you require your 2nd dwelling fireproof protected. Get started the same as right before but the times and temperatures in the furnace will be a lot less.

o 20 minutes at 1,460 levels for a &frac12 hour rated safe and sound
o 30 minutes at 1,550 degrees for a 1 hour rated safe and sound
o 45 minutes at 1,640 for a 2 hour rated harmless
o 60 minutes at 1,700 for a 3 and 4 hour rated safes

This element appears like a Television set match demonstrate. You now have 2 minutes to get the secure out of the furnace, lift it 30 feet in the air and fall it on to your pile of bricks. If you can see the insides by means of any cracks or the door, your fireproof secure flunked the next take a look at. Nonetheless, if it nevertheless appears to be like Okay you usually are not carried out but.

Flip your protected upside down and reheat it yet again. This time you can take away it from the furnace and permit it cool. Open the risk-free and look at the contents. If every little thing is Ok, which includes no injury due to humidity, you are pretty much finished.

Explosion Examination

If you are a admirer of Mythbusters on Television set, then this has the opportunity of becoming the most enjoyable. If you only bought two safes, then you will want to do this right before you do the drop exam.

Begin with an vacant fireproof household safe and sound. Warmth it to 2,000 degrees then open it and things the exam files, CDs or other material in really brief. Slam the doorway shut and retain the exterior at 2,000 levels for a different 30 minutes. If your safe hasn’t exploded you are pretty much finished. When it has cooled plenty of to make sure you can take care of it, open up your house fireproof harmless and make positive your documents are even now Alright.

Congratulations, you have just proved that your household fireproof risk-free is in fact hearth resistant.

Mythbusters Check

None of your safes are any great any more so this is for individuals who like to see matters blow up. Get a stick of dynamite and… No, I’m not going there. Anyone may accuse me of endangering folks.


It is a good deal more cost-effective and safer to just seem inside of your risk-free and see if it has a UL sticker.