PD CEN/TR 13930:2009

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

Gives recommendations for the design of pump intakes and the installation of pumps.

1.1 This technical Report contains recommendations for the design of pump intakes and the installation of pumps.

As far as possible, these recommendations should be adhered to in order to obtain correct operation of the plant.

These recommendations are applicable regardless of the flow rate of the plant:

• plant which works with clear water (or relatively unclouded) and relatively non-aerated water or any other liquid having physical and chemical properties which are similar to those of water;

NOTE This document nevertheless contains several general recommendations for operation with cloudy (or very cloudy) water.

• pumping plant which has its own floor.

1.2 This document deals with various intake configurations:

• Clause 3 contains recommendations which apply to intakes with vertical suction inlet;

• Clause 4 contains recommendations applicable to intakes with top suction inlet;

• Clause 5 contains recommendations applicable to intakes with floor suction inlet;

• Clause 6 contains recommendations applicable to intakes with side-wall suction inlet.