Test procedure

Dimensional check and visual inspection

• Dimensional and visual inspection of the expansion joints and welding seams in accordance with DIN EN  ISO 17637

Non-destructive test (NDT)

• Dye penetration test (DP) in accordance with DIN EN ISO 3452-1

• X-ray in accordance with DIN EN 1435

Leak test according to DIN EN 1593

• Leakage test of the expansion joints

vacuum test according DIN EN 13185

• Leakage test of expansion joints and hoses with helium at vacuum down to < 1x10E-8 mbar*l/s

Pressure test according DIN EN 13184

• Checking the pressurized parts for strength and tightness using a constant test pressure

Pressure, load cycle and strength test in an independent test laboratory

• By impacting with internal pressure and subjecting to cycled symmetrical movements, the expansion joints are tested for load cycle reliability.