GOST 21339-82

Acoustics. Reference sound source used for the determination of sound power levels of machines. Requirements for the performance and calibration

Safety of machinery. Safety distances to prevent danger zones being reached by the lower limbs

Air transport. Safety management system of helicopter activity. Risk management. The standard guide on safety management system for helicopter equipment testing. Main provisions

Internal combustion reciprocating engines. Exhaust emission measurement. Part 3. Definitions and methods of measurement of exhaust gas smoke under steady-state conditions

Dental tweezers. Part 1. General requirements

Liquid pumps and installations. General terms, definitions, quantities, letter symbols and units. Part 2. Pumping systems