GOST R 54951-2012

Reciprocating internal combustion engines. Safety requirements for design and construction of engines for use in potentially explosive atmospheres. Part 2. Group I engines for use in underground workings susceptible to fired amp and/or combustible dust

Arc welding. Welded joints in pipelines of copper and copper-nickel alloy. Main types, design elements and dimensions

Air cargo and ground equipment. Terms and definitions

Low voltage systems. Cable systems. Backbone subsystem of structured cable system. Basic principles

Thermal insulation. Physical quantities and definitions

Testing of chemicals of environmental hazard. Fish, Early-Life Stage Toxicity Test