An ISO/IEC 17025:2005 Standard - NABL Accreditation Certified Organization.

NDT TRAINING METHOD IN CHENNAI

RADIOGRAPHIC TEST FILM INTERPRETATION (RTFI)

KEY TOPICS

Radiographs Quality.

Indication Identification & Acceptance criteria.

Inspection records

Radiographs Quality

Density.

Sensitivity.

Re-takes / Re shoots.

Density

The density limitation on the Any Project is 1.8 min and 4.0 max.

Densitometer

Sensitivity

Sensitivity in general refers to the size of the smallest detail that can be seen in a radiograph.

2% is the minimum required sensitivity on the any Project.

% IQI Sensitivity= Thickness of wire visible X 100 รท joint thickness.

Re-takes / Re-shoots

In principle area of interest of all RT films shall be free from mechanical, chemical, or other blemishes to the extent that they are not confused with the image of any discontinuity.

Fogging

Process marks

water marks

chemical strains

scratches

Finger marks

Dirtiness

static marks

Tears

Indications Identification & Acceptance criteria

Relevant indication

Only those indications which exceed the following shall be considered as relevant indications

0.4mm for thickness 3mm to 6mm

0.8mm for thickness 6mm to 50mm.

1.6mm for thickness > 50mm.

CRACKS

TRANSVERSE CRACK

LONGITUDINAL CRACK

SOLIFIDICATION CRACK