EN 13941:2009 (E)
The calculated values shall not exceed table B.1 of prEN 488.
Application rule
Installation of valves in expansion sections shall be avoided. However circumstances (e.g. installation in urban areas with intense underground
infrastructure and limited space) may be such that installation in these sections cannot be avoided.
7 Installation
7.1 General
The installation shall be done:
a) in accordance with the installation plan and the system manufacturers' instructions,
b) in accordance with the design documentation so to ensure the adequate safety of fitters and other personnel
on site as well as any third persons,
c) so that installation and operation do not harm to other structures or installations, e.g. roads; conversely, those
structures and installations shall not be able to cause damage to the pipe system.
According to 4.4, project classes have been determined, thus also the required design documentation.
For the installation and assembly of pipes and components only materials and methods, which meet the specified
instructions, regulations, and standards shall be used
Application rule:
Pipeline sections, which cannot be installed in compliance with this standard such as other than preinsulated pipe sections, e.g. bridge
crossings, water course crossings, casing pipes should be installed by skilled personnel according to the project drawings and corresponding
other standards, codes and regulations.
If changes are made during installation the design documentation shall be changed accordingly. The constructive
and static consequences of any changes that may become necessary shall be examined.
7.2 Transportation and storage
Handling, transportation and storage of pipes and fittings, etc., shall take account of the properties of the different
materials, the special instructions given by the manufacturer of this material and current external conditions in order
to avoid that subjecting the components to harmful impacts and in order to avoid impurities, etc., in pipes and
fittings.
Precautions shall be taken to avoid scratches and notches. The special conditions for PE casing pipes shall be
taken into account during transportation and storage.
Adequately wide straps, according to the dimension in question, shall be used as lifting tools as well as adequate
supports.
Application rule:
Steel pipe ends should remain sealed by means of end caps.
PUR foam should be protected against moisture e.g. by foam skin.
Due to the risk of brittle fracture, precautionary measures should be taken in the case of temperatures below 10
º
C.