Non-destructive testing, penetrant testing EN , Non-destructive testing of steel forgings — Part 2: Liquid penetrant inspection is performed by examining defects made visible by a penetrant fluid. This is why it is very important to provide early detection on such structures as cranes, bridges, vessels, piping, where there is risk of possible hard economic consequences and loss of lives. This broadly diversified competence is also requested elsewhere: Trapped penetrant will cause defects in welds if further welding is done or will bleed out over time and contaminate paint and process fluids.
Liquid Penetrant Examination (LPE) | Inspectioneering
During this dwell time, penetrant is forced into any surface abnormalities via capillary action. With the aid of proper lighting, visual inspection is performed to detect any indications that may be present. A line or dotted line marks a crack, lap, forging burst or cold shut. Laboratories Division around the world. These cookies collect anonymous information on how people use the website:
In tubular applications, the inspection head contain is made up of drive and sensor coils and a position transducer that are connected by cable back to the power source and signal processing computer. Product information, approvals, technical datasheets can be found in our product database. After applying the penetrant and letting it dwell for a certain period of time, the excess is removed and a developer is applied. It is then left to site for an amount of time to allow as much dye penetration as possible. The most common sound frequencies used in UT are between 1. We have an in-house NDT laboratory and a team of field technicians to help assist you with your non-destructive testing needs.