Visual Inspection Procedure

I. Scope

This procedure defines the requirements to be followed for visual inspection of parts
to be welded, before welding and completed welds, after repairs and PWHT.

II. Reference

- ASME Section V = Non Destructive Testing
- AWS B1.1. 10. 86R = Non Destructive Inspections of Weld

III. Resposibility

The Inspector shall execute the visual inspection according to this procedure and the applicable codes.

IV. Procedure

Visual examination shall be carried out at the following work stages:

a). After weld edge preparation and prior to welding

b). After fit-up

c). After inside welding and outside welding

d). Before and after welding of parts to be repaired. The DPT has to be
performed to insure that the defect has been completely removed.
After repair, the weld must always be inspected with the same test method
when the defect was detected.

IV.1. Illumination of The Surface

The surface of the object under examination will be illuminated with natural or
an artificial light source with a minimum light intensity of 500 lux.

During the inspection of welds, following will be verified:

a). That all surfaces and edges to be welded are uniform, smooth, free
from oxidation, moisture/water and grease.

b). They shall be carried out according to approved Welding Procedure
and relating construction drawing as far as applicable for the visual
examination.

c). The cut surface and edges performed by thermal cutting or machining
comply with the drawing.


d). Before assembly or welding, all flame cut or machine bevels are free
of defect indications and deep grooves. Any doubtful defect indication
will be evaluated by DPT, MT and/or UT.

IV.2. Tack Welds

a). Tack welds will be removed completely. In this case discontinuities such as
undercut, unfilled craters and porosity need to be removed before welding.

b). Tack welds incorporated into final weld.
Those tack welds shall be welded with electrodes meeting the same quality
requirements as the final SMAW weld.

c). The gap between the two edges to be welded is according to approved
welding procedure.

d). The alignment of parts to be welded are in accordance with Table. 10.3

V. Acceptance Standard
During the inspection of the finished welds following will be verified: in Table 1.

VI. Records
For each visual examination the acceptance is reported on the Dimensional and
Visual Control sheet.