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UL 2085 fuel tanks and UL 2080, what is the difference? Part II


Following our Part I from an earlier post, we are now switching gears to take a look at the name UL 2080.  If you are finding part II first, you can read part I of the post here.

In our previous post, we clarified that the the UL 2085 Standard is the most stringent standard for shop-fabricated atmospheric tanks (ASTs), meeting the requirements of UL 2080 and UL 142.  A far superior design, heavy, and almost bullet proof.

UL 142 tanks Houston

Now, the label "FlameShield"  became equivalent with the SwRI 97-04 Standard because it was originally manufactured under that listing, heavily marketed.  However, according to spec's on the SwRI website, two products only reference 97-04 on their SwRI label: SuperVault MH, and Pyrotector of Mexico. Ok so what does this mean? it means that the tanks that carry the label Flameshield have been built in accordance with UL 142, complying with Sections 2-4.5(a) of NFPA 30A, as a Fire Resistant Tank.

However, here is where the NFPA 30A will throw a curve at us. The NFPA defines a Fire Resistant Tank as follows: "in accordance with the provisions contained in UL 2080, Standard for Fire Resistant Tanks for Flammable and Combustible Liquids, or an equivalent standard”. SwRI 97-04 does not appear as a standard, only because of the temperature criteria (previous post, read here) , as does UL 2080. Nor does FlameShield appear to meet the definition of Fire Resistant Tank according to the 2003 edition of NFPA 30A.

UL 2085 Houston

According to Convault's website, here is the main criteria for UL 2080 fuel tanks. 

"In the 2003 editions, NFPA 30 and 30A recognize the UL 2080 Standard as a standard for Fire Resistant tanks. (See sections in NFPA 30 and sections, 4.3.4 and D.1.2.5 in NFPA 30A.) However, when defining Fire Resistant tanks, the 2000 editions of NFPA 30, section and NFPA 30A, section (and prior editions) specified only that Fire-Resistive tanks provide “fire-resistive protection from exposure to a high intensity liquid pool fire”. The codes did not specifically determine the testing requirements and the temperature criteria needed for the fire test to meet the intent of the code. The NFPA code writers left it to the standards developing organizations such as Underwriters Laboratories (UL) to design a standard to satisfy the code’s intentions. In 1997, UL developed the UL 2080 Standard for Fire Resistant tanks to meet the code intent. Among other requirements, UL 2080 Standard for Fire Resistant tanks specifies that the tanks must be tested in a 2000 °F furnace for two hours. The temperature pass/fail criteria for the primary tank after 2 hours of fire test are:

  1. The average maximum temperature rise recorded on the primary tank shall not exceed 800 °F and
  2. The maximum temperature of any single thermocouple on the tank shall not exceed 1000 °F.

Even though the 2080 Standard for Fire Resistant tanks is inferior to UL 2085, at least it has some temperature rise limitations and has the option for listing for resistance against vehicle and ballistic impacts."

I realize this has been a lengthly two part series but we hope it has shed some light into the "Flameshield standard" UL 2080, UL 2085 fuel tanks.

UL 2085 Fireguard





Most of our customers are very familiar with the UL 2085 Fireguard standard, but that is not to say that the UL 2080 does not have its own merits.

A few applications: gasoline fuel storage tanks, jet fuel storage tanks, double wall fuel tanks, aviation fuel storage tanks, heli fuel storage tanks.

TransLiquid Technologies, supplying UL 2085, UL 2080, UL 142 fuel storage tanks to the Houston and surrounding areas.

Note: special thanks to Convault, great manufacturers on the west coast.

Thank you for reading our Blog.

Transliquid Technologies - not only thinking different, but doing business different.  Call us today at 281-377-5845

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"Nor does FlameShield appear to meet the definition of Fire Resistant Tank according to the 2003 edition of NFPA 30A." It's not just according to NFPA 30A - it's also according to Wayne Geyer of STI: "As a result, STI discontinued calling Flameshield a fire resistant tank. Instead, our 
literature states that it is a two hour fire tested tank." In my opinion, while the SwRI 97-04 test may have met the verbatim requirements of 1996 fire code, it fell far short of the intent since SwRI 97-04 passes single wall, uninsulated tanks without regard to the fact that the steel needs to remain structurally sound while bearing a load. That's the purpose of the temperature rise requirements of UL 2080.
Posted @ Thursday, July 29, 2010 9:38 AM by CrnkyBstrd
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