Testing of flexible liners

Accredited initial type test accordingly to EN 1856-2

Typical test sequence for a negative pressure (N1), dry (D) flexible liner:

Compressive strength of fittings and supports
Tensile strength
Crushing resistance
Flexibility
Torsion strength
Pulling force
Gas tightness
Thermal performance test
Thermal resistance (calculated)
Flow resistance of liner and fittings (calculated)
Dimensions and tolerances