CEN/TR 13930:2009/AC:2010

Foreword
Introduction
1 Scope
2 General
  2.1 Factors which influence the operation of the plant
  2.2 General design principles for a pumping plant
3 Plant with vertical suction inlet
  3.1 General arrangements
  3.2 Diameter (D) at the entrance of the bellmouth
      or the tapered suction
  3.3 Distance (C) between the bellmouth or the
      tapered suction inlet and floor
  3.4 Distances between suction inlet axis and
      walls
      3.4.1 Distance (L) between suction inlet axis
            and side walls
      3.4.2 Distance (E) between suction inlet
            axis and rear wall
  3.5 Submergence (S)
      3.5.1 Conditions to be satisfied for the
            determination of submergence
      3.5.2 Determination of submergence (S)
  3.6 Strainer
  3.7 Feed intake - Pump environment
      3.7.1 Feed intake
      3.7.2 Immediate environment of the pump
  3.8 Case of pumping plant with vertical suction inlet
      and flow rate less than 50 m[3]/h
4 Plant with intake with top suction inlet
5 Plant with intake with floor suction inlet
  5.1 Bellmouth
  5.2 Submergence of horizontal plate
  5.3 Special anti-vortex devices
6 Plant with intake with wall suction inlet
  6.1 Shape and position of suction inlet
  6.2 Submergence
  6.3 Special anti-vortex devices
Bibliography