HENGONE Inspection Technology

ISO 2768-1, General Tolerances - Part 1: Tolerance for linear and angular dimensions without individual tolerance indications ISO 2768-2, General Tolerances - Part 2: Geometrical tolerances for features without individual tolerance indications ISO 13920, Welding - General tolerance for welded constructions - Dimensions for lengths and angles - Shape and position Rev.1 (Nov.10, 2021) The tolerance class shall be stated on the drawing or the contract document. If the tolerance class is not specified, the following class shall be applied as per the common practice. ISO 2768-1, Tolerance Class: m ISO 2768-2, Tolerance Class: K ISO 13920, Tolerance Class: B & F The QC inspector cannot decide the tolerance class for the acceptance criteria. Prior to the dimension inspection, the QC inspector and the buyer's engineer shall discuss the applicable tolerance class. If the discussion is not possible due to the several reason, the applicable tolerance class shall be stated in the i...

This guide is used for the purchaser's inspection. ITP Step 2.1 Edge Preparation & Fit-up Inspection Please perform the visual and dimension inspection as per the applicable WPS which is placed at the fabrication shop (not in the office) for the check of material thickness, groove angle or bevel angle, root gap, tack weld condition and filler metal specification. Also, the storage method of the filler metal shall be checked. Please verify the welder IDs with the the welder list. The fabrication shop overview to be fabricated our tanks, welding machine condition, shield- gas gauge shall be reported with the evidence photos. Please identify the material specification with the permanent or temporary marking on the main materials. The heat numbers shall be matched between the materials and the material certificates. (End)

Third Party Inspection (TPI), Vendor Inspection and Shop Inspection are carried out in accordance with the inspection and test plan (ITP). Basically, ITP is written by the manufacturer QC engineer. The ITP is submitted to the purchaser for the purchaser's review or approval. STD-ITP-0001 is providing the standard ITPs of general equipment or items for supporting the QC engineers of Manufacturer, Supplier, EPC contractor and Company (End User). The standard ITP consist of the following inspections and tests; Material Inspection Visual & Dimension Inspection Function Test or Performance Test Paint Inspection Packing Inspection IRC(Inspection Release Certificate) Standard ITP