processes of the quality safeguarding

Checking of the drafts and construction drawings.

Preliminary examination by way of calculation by own or offical control authorities.

Checking of all arriving materials from the sub-supplier.

Nondestructive methods of testing at prefabricated parts.

Ultrasonic and radiographic testing.

Surface crack testings by penetration or magnetic powder testing methods.

Leak test by hydraulic test.

Performance check.

Final test and inspection.