A ul1709 test evaluates the performance of protective material through a test in a furnace capable of reaching 2,000f 1103c within 5 minutes of operation. Structural steel fire protection testing and certification ul. Approval of structural steel protection materials for. Jet and hydrocarbon fire tests and investigation of the regulations. As a consequence of the data obtained from these tests, a series of time temperature curves for the various exposures have been developed as detailed. Fire safety of buildings based on realistic fire time. The fire test was run following the astm e814 ul 1479 time temperature curve. Since september 1983, ul has tested and listed fireproofing materials on the basis of ul 1709. The standard was originally developed to provide fire testing requirements suitable for materials exposed to the rapidly rising high temperatures typically observed in high intensity, hydrocarbonbased fires. Ul 1709 standard for rapid rise fire tests of protection materials. Fire resistance test an overview sciencedirect topics.
Since september 1983, ul has tested and listed fireproofing materials on the. Fireproofing for hydrocarbon fire exposures applied building. Hydrocarbon fire, or pool fire, is a fire fueled by hydrocarbon compounds oil and gas, having a high flame temperature to c 1832f within 5 minutes, achieved almost instantaneously after ignition. The difference between cellulosic fire and hydrocarbon fire. We have been certifying products to the ansiul 1709 hydrocarbon standard for more than 25 years, but legislation and guidance in many parts of the world impose additional requirements on the products that the current test method is unable to fully address. The unexposed surface temperature of the sample was monitored by eight, 20 gauge type k, fiberglass sheathed thermocouples. The timetemperature curve in ul 1709 represents the conditions associated with burning pools of hydrocarbon fuels. A new temperaturetime curve for fireresistance analysis of. Provides full corrosion protection and passive fire protection in a single system. This new curve describes the transient nonuniform temperature distribution for localized fire.
The ul 1709 timetemperature curve is also shown in figure 1. Ul 1709 specifies that the fire test curve reaches temperatures of 2000f 1093c after 5 minutes. Its function is trying to assess and compare the different behavior of the building materials in the same fire scenario. Fire safety of buildings based on realistic fire timetemperature curves anthony d. Accreditations calibration column according to ul 1709 standard. Ariyanayagam 1, mahen mahendran 2 abstract in recent times, fire has become a major disaster in buildings due to the increase in fire loads, as a result of modern furniture and light weight construction. The intent of the ul 1709 test standard is to evaluate the thermal resistance of protective material applied to steel structures to a rapidtemperature fire exposure in a furnace environment with an average temperature of 109356c within 5 minutes from c the start of the test. Cellulosic curve standard fire tests to which specimens of constructions subject to are based on the use of the cellulosic time temperature curve, as defined in various national standards, e. Mar 31, 2018 the time temperature curves are mathematical formules that regulate the temperature in a test furnace as a function of time. The astm fire test standard is a living document that under. Fire resistance test on protected and unprotected steel.
Ul 1709 standard for rapid rise fire tests of protection. At the other end of the spectrum, discussions have cited the need for a timetemperature curve that has a slower rate of rise than specified in astm e119. What other tests are conducted on fire resistive materials to prove evidence of endurance in hydrocarbonbased fires. Ul1709 standards in refineries and chemical plants unitherm. The severity of two fires was equal if the area under the temperature time curves were equal above a base line of 300 c.
Other test standards include ul 1709, rapid rise fire tests of protection materials for structural steel for hydrocarbon fire exposure, iso 228991, determination of the resistance to jet fires of passive fire protection materials and imo resolution a. Steel strength reduction with temperature 2% strain. About ul 1709 ul 1709, rapid rise fire test of protection materials for structural steel, was first published in 1989. Material with the time temperature curve, for example, ansi ul 1709. Time min fiure 1 the furnace interior temperature during a test is controlled such that the area under the time temperature curve is within 10% of the corresponding area under the standard time temperature curve for 1 hour or less tests, 7. By contrast, the ul 1709 fire curve represents a much more severe fire, in this case a hydrocarbon fire such as might occur at a petrochemical facility, which increases from 75f to 2,000f in 5 minutes.
A ul1709 fire is a rapid rise fire that reaches 2000f within the first 5 minutes of the fire exposure test. Highlights a new time temperature curve based on numerical tests has been developed by the parametric method. Our breadth, established objectivity and proven history mean we are a symbol of trust, enabling us to help provide peace of mind to all. The test method involves mounting the structural component in a load bearing restraint frame. Pdf fire resistance testing for performancebased fire design of. One test structure tested w10 x 49 hsection column one thickness smaller mass structural members are under protected larger mass structural members use more material than required resulting in unnecessary cost and weight failure temperature f 50% of steel strength.
Ul 263 fire test to building material standard time temperature curve shown the fire exposure of door assemblies shall be controlled to conform to the applicable portion of the standard time temperature curve shown. In this project, the nrc floor furnace was used to conduct the tests allowing all cables to. This analysis is in line with the philosophy of ansiul 263 and ansiul 1709 but does not restrict the limiting steel temperatures to 593 degrees c704 degrees c. Concrete and steel structural elements rws curve with a minimum. During the period of 10 to 30 minutes, the furnace temperature is slightly higher according to the ul standard, before and after that, the furnace temperature required by the en standard is higher. Thus, any fire temperature time history could be compared to the standard curve. The ul 1709 timetemperature curve is also shown in. An insulating pad was placed over each of the six thermocouples on the gypsum board. The temperature rises from ambient temperature to 1093c close to the test specimen within 5 minutes is 154c above the hc temperature time curve at 5 minutes. These four factors are taken into account while developing the new curve. Fully tested to meet the most rigorous on and offshore specifications for oil and gas installations in particular ul 1709 hydrocarbon curve and iso 22899 jet fire erosion test, mattflex is a flexible system.
As shown in figure 6, temperatures defined in both the en 632 and ul 1709 curves increase at much faster rates, reaching approximately 1100c within 30 minutes in en 632 and 5 minutes in ul 1709 respectively. Hydrocarbon fire temperature time curves are specified in several regulations and various fire test standards. The failure criteria for specimens exposed to the rabtztv time temperature curve is that the temperature of the reinforcement should not exceed 300c. Ul is a global independent safety science company offering expertise across three strategic businesses. The standard fire curve of a cellulosic fire reaches 500c 932f within 5 minutes and rises to 945c 1733f over time. The hydrocarbon time temperature curve is, however, actually a testspecific. There is no requirement for a maximum interface temperature. The traditional fire development curve shows the time history of a fuel limited fire. Fireproofing faq fire protection for petrochemical. Fire growth type, heat release rate, dimension of internal space and fire area are key factors. Activity for high intensityhydrocarbon fires with astm in mid 1970s to meet oil refinery specifications. As more fuel becomes involved in the fire, the energy level continues to increase until all of the fuel available is burning fully developed. Ul 2431 standard for safety for durability of fire. European hydrocarbons curve hc and american ul1709.
The 110 minutes cooling period is applied to both fire curves. Ul 1709 standard the temperature rise of the ul1709 is more severe than the european hydrocarbon fire hc. The tests are often quoted as a timetemperature curve quickly reaching. The tests are often quoted as a time temperature curve quickly reaching and maintaining a test furnace temperature of 1,093 degrees centigrade 2,000 degrees fahrenheit in the case of the astm standard and 1,143 degrees centigrade 2,089 degrees fahrenheit at ul. Section 3 thermal actions for temperature analysis 3. In figure 5, the fire starts at room temperature 75f in this case and gradually increases to 2,000f in 4 hours. This analysis identifies the thickness of coating material necessary to keep a specific substrate below a specific temperature for a precise duration. In laymans terms, ul 1709 is a high temperature fire test to prove that fire protection materials can withstand exposure to high rise temperature fires. Ul1709 standards in refineries and chemical plants. The temperature rise of the ul1709 is more severe than the european hydrocarbon fire hc. The fire resistance test for the nclass division is similar, but with exceptions, to resolution a. Click on a datetime to view the file as it appeared at that time.
The timetemperature curves are mathematical formules that regulate the. Both curves are specified to simulate hydrocarbon pool fires. The drop off for train fires only starts at 60 minutes. The protection of structural steel in hydrocarbon fires ul. Tested in accordance with norsok m501, certified for use without mesh reinforcement. This is considered to be the standard timetemperature curve for buildings. Comparison between astm e119, astm e1529, and ul 1709 is. Temperatures are then held constant for the rest of the test time. Calibration column according to ul 1709 standard jet fire test bench accreditation.
Unique among the fire resistance standards, ul 1709 also has a heat. Ul 1709 national fireproofing contractors association. Aug 01, 2011 in laymans terms, ul 1709 is a high temperature fire test to prove that fire protection materials can withstand exposure to high rise temperature fires. Guide to specification and certification of fire divisions.