Fire Tests Certificates & their Significance

Updated: Jan 21

This article will give you an overview of the various fire tests certificates applicable to high temperature fire safety PPE and fire blankets. To select your product you need to review these fire standards so that relevant products are used as per the user application.


Fire Tests Certificates for Fire Blankets & Welding Blankets


IS 11871 : Vertical Flammability


This is an Indian fire test standard where the fabric sample is exposed to a vertical flame for 12 seconds and parameters such as flashing, duration of flame on the sample, afterglow, char length and whether there is any abnormal behaviour or not. Any fabric used in a fire blanket or fire PPE should not have any flashing, duration of flame or any sort of abnormal behaviour. A typical certificate is shown here.


Any fire blanket or welding blanket must as a bear minimum be certified to IS 11871.


Fiberglass Fabrics, Silicone Coated Fiberglass, Vermiculite Coated Ceramic and High Silica fabric pass this tests.



ISO 6940: Flammability Tests


It is an international standard flammability tests where the surface and edge ignition of the fabric is tested on exposure to 20 seconds of flame. Sample must not ignite upto 20 seconds to pass this standard. An example of the test report has been shown here.


A fire blanket fabric used for welding certified to ISO 6940 gives the added performance guarantee to the end user.


Vermiculite Coated Ceramic and High Silica fabric pass this tests.





BS EN 45545 & BS EN 13501: Combustibility and Fire Tests


This is one of the most difficult fire tests for checking the combustibility and fire properties of fabrics used in construction products and building materials as well as fabrics used for railways application which can be exposed to high heat and extreme fire. Test report shown here.


Any fire blanket used for high duration and close proximity welding blankets in construction or railway industry should be certified to this standard.


Only the High Silica fabrics are approved to these standards.




FM 4950: Welding Tests


This is a specialized tests particularly designed for fabrics which are supposed to withstand welding sparks.