EN 12255-10:2000

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
  4.1 Confined spaces, hazards and warning systems
  4.2 Vehicular and pedestrian traffic routes
  4.3 Fixed ladders, manhole steps and staircases
  4.4 Manholes
  4.5 Falling preventions and covers
  4.6 Emergency exits
  4.7 Work places, work platforms and maintenance
       platforms
  4.8 Lifting equipment
  4.9 Ventilation
  4.10 Areas at risk from explosions
  4.11 Hygienic facilities
  4.12 General warning signs
5 Special requirements
  5.1 Systems for separating solids from wastewater
  5.2 Wastewater pumping stations
  5.3 Aeration tanks
  5.4 Digestion tanks, low-pressure gas holders
  5.5 Digester gas pipes
  5.6 Desulphurizing plants
  5.7 Gas engine rooms and gas engines
  5.8 Gas flares
  5.9 Sludge dewatering
  5.10 Installations for storage and handling of
       chemicals and hazardous substances
Annex A (informative)
Bibliography

This standard is for the protection of employees and defines safety requirements for wastewater treatment plants to be constructed or reconstructed as follows: - for structures and parts of structures where safety factors have to be taken into account; - all components of the technical equipment, as far as safety requirements have to be observed in the planning and construction of these parts of the plant.