NFPA2112 Standard Introduction

NFPA 2112: American Fire Protection Association Flash Fire Clothing Standards The American Fire Protection Association makes provisions for industrial flash fire flame retardant protective clothing in the following areas: Product Marking, User Information, Clothes Design, Fibers, Sutures, Accessories Accessories , signage. NFPA 2112 is a standard for flame-retardant protective clothing for industrial use. It is the test basis for the establishment of laws and regulations for industrial flame retardant protective clothing in the future. It comprehensively describes the thermal protection performance requirements of industrial flame retardant protective clothing, including a series of thermal protection performance tests.

 (1) Vertical burning performance test. Expose the material to a standard flame for 12 s. After removing the flame, determine if it will be ignited and burn the length of damage.

 (2) The thermal stability test is basically the same as the 500°F oven test in the NFPA 1975 standard.

 (3) Thermal radiation and thermal convection mixed protective performance test, abbreviated as TPP method. The test method is to place a 6 square inch fabric under a thermal convection and radiant heat source with a total energy density of 2 cal/(cm2·s), and then record the time required to reach the secondary burn. The TPP value is time multiplied. Take the cal/cal/(cm2·s) value. The higher the TPP value, the stronger the protection provided by the fabric. Different from the vertical burning test, the TPP test can tell us how much energy the simulated human skin needs to absorb to reach secondary burn through various fabrics. In other words, the higher the TPP value, the more exposed the fabric is to high temperature and high heat. The better the body's protection, the more effective the TPP value is the most direct manifestation of thermal protection performance.

(4) Thermal manikin test. The test was to put a 6-inch-high mannequin with 122 temperature testers on the body to put on fire suits and expose it to the 2 cal/cm2·s heat source of the 12 propane flamethrower. The temperature data collected by the temperature tester simulates the degree and degree of secondary and tertiary burns and parts of the human skin that may be affected. This is the most advanced thermal burn assessment system in the world today. In order to further simulate the degree of burn of the human body in the actual flame, it is used to test the degree of protection provided by the clothes under the actual fire conditions of the whole suit. Through this test, we can predict the degree of secondary or tertiary burn that the body may reach. The lower the degree of systemic burn, the greater the chance of survival.

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