Adaptation of a methodology of measuring and assessing anti-electrostatic properties of heterogenous fabrics for protective clothing for work in areas at risk of an explosion

The basic aim of the task was to create possibilities of measurements and assessment criteria that would make it possible to conduct anti-electrostatic qualification of protective clothing for work in areas at risk of an explosion. A method was developed for testing electrostatic properties of clothing fabrics containing core conducting yarn, in accordance with the assumptions in the PN-EN 1149-3:2007 standard. Following the assumptions in that standard, a test stand was designed and constructed. An electric charge is generated on the tested fabric inductively at this stand.The task also consisted in: - measuring the shielding coefficient S and decay time t50 of an electric charge for textile fabrics, including heterogenous ones containing - conductive core yarn,- determining - on the basis of the above results - the uncertainty of the measurement and validating the developed measurement procedure,- developing a procedure for determining the shielding factor and the decay time of an electric charge for textile fabrics according to the PN-EN 1149-3:2007 standard, which will be included in the quality management system in CIOP-PIB's testing laboratories,- measuring anti-electrostatic properties of textiles and garments produced out of those textiles with other methods, regarding a comparison of the qualification of the fabrics for clothing for use in explosive atmosphere,- developing recommendations/assessment criteria for materials and the structure of garments to be worn in areas at risk of an explosion.