dnaSRPS EN 18213-1:2025

District heating and district cooling pipes - Bonded single and twin pipe systems for directly buried hot and cold water networks - Part 1: Qualification testing of fitter

Scope

This document specifies the methods of examining the knowledge and skill set of the fitter required to carry out on-site sealable joint casing connections on thermally insulated rigid single and twin pipe systems for directly buried hot and cold water networks according to EN 13941-1 [7] and EN 13941-2 [8] also as for flexible pipe systems according to EN 15632-1 [10], EN 15632-2 [11], EN 15632-3 [12], EN 15632-4 [13], EN 17414-1 [17], EN 17414-2 [18], EN 17414-3 [19], EN 17878-1 [23], EN 17878-2 [24], EN 17878-3 [25] and CEN/TS 17889 [26].
The application of these specifications ensures that the examination is carried out according to a standardised examining procedure.
This document covers the following processes:
- preparatory works for joint casing assembly;
- assembling and testing the elements for surveillance systems;
- assembling sealable joint casing system;
- verifying joint tightness (leak tightness testing);
- thermally insulating the joint casing (PUR foaming or half-shells);
- sealing fill & vent openings (weldable or sealable plugs);
- assessing overall installation quality of the completed sealed joint casing assembly (non destructive).
Requirements for test institutes and supervisors are also specified.
NOTE   Due to differences of the specific application methods and equipment from joint casing system suppliers, it might be advisable for the fitter to be certified for the particular sealable joint casing system.