PNST 521-2021

Electric wheelchairs. Method of determination of obstacles climbing ability

Electromagnetic compatibility of technical equipment. Specification for radio disturbance and immunity measuring apparatus and methods. Part 2-3. Methods of measurement of radio disturbances and immunity. Radiated radio disturbance measurements

Leather. Physical and mechanical tests. Method for determination of resistance to horizontal spread of flame

Steel rolled products. General rules of sampling, rough specimens and test pieces selection for mechanical and technological testing

Dependability in technics. Dependability management. Guidance on system dependability specifications

Remote sensing data of the Earth from space. Software for primary processing of remote sensing data of the Earth from space. Basic requirements for external design and functional composition