Mechanical vibration. Evaluation of machine vibration by measurements on rotating shafts. Part 2. Land-based steam turbines and generators in excess of 50 MW with normal operating speeds of 1500 r/min, 1800 r/min, 3000 r/min and 3600 r/min
Occupational safety standards system. Respiratory protective devices. Valved filtering half masks to protect against gases and or gases and particles. General specifications
