BS ISO 21539:2019规定了一种测试方法，当安装用于室外应用时，使用电阻跟踪加热在低温环境下提供防冰，以评估走道的性能。它包括对试验设施、试验条件、试样、试验程序和试验报告的要求。交叉引用:IEC/IEEE 60079-30-1IEC/IEEE 60079-30-2ISO 14122-2:2001购买时可用的所有现行修订版均包含在本文件的购买中。

BS ISO 21539:2019 specifies a test method to assess the performance of walkways using electrical resistance trace heating to provide anti-icing in low temperature environments, when installed for exterior applications. It includes requirements for the test facility, the test conditions, the test specimens, the test procedures and the test report.Cross References:IEC/IEEE 60079-30-1IEC/IEEE 60079-30-2ISO 14122-2:2001All current amendments available at time of purchase are included with the purchase of this document.