Friday, November 27, 2009

Nuclear Power Plant pump castings DPTesting/crack detection,Bangalore,India

Pump castings & shafts for Nuclear power plant assemblies were tested by Team Trinity NDT using Fluorescent penetrant inspection for crack detection / discontinuity detection at NDT facility in Bangalore, india.

Fluorescent penetrant Inspection FPI revealed fine pinholes both isolated and clustered at some important areas of castings (see adjacent photos with marked areas).'Team Trinity NDT' is equipped with state of art NDT equipment including Ultrasonic flaw detection, Magnetic crack detection, Dye liquid penetrant testing, Radiography, material testing facilities and trained, qualified, certified personnel to carryout most critical applications round the clock in Bangalore, Hyderabad,Visakhapatnam (Vizag), Chennai, Mumbai,Delhi and throughout India. Trinity NDT also conducts ASNT NDT Course trainings (Level 1, Level 2) in Bangalore, Mumbai, Hyderabad, Vizag and at customer's works in India and abroad.

1 comment:


    This type of non-destructive method NDT provides the possibility to measure residual stress and the effect of the service load with an impact device and a vibration measurement sensor. Internal stresses are to be considered as the following: 1) Operational strains referring to loads that the material is subject and calculated 2) Residual stresses in the material caused by heat treatments or stresses caused by welding, forging, casting, etc. The new technique is able to measure the applied load and residual stress that are balanced on the surface of the material, and in a relatively large volume, at times even the same size as the entire structures. This stress is part of the metal’s elasticity field and has a three axis spatial orientation. The system works through the accelerometer mounted with a magnetic base to generate the acceleration value of the vibrations created by the device impacting on the metal surface.
    The acceleration value, in combination with other parameters, permits obtaining the exact value of the residual stress or load applied in the desired point. This value will appear on the display directly in N / mm ². For non-magnetic metals, wax or gel will be used to mount the accelerometer.
    This new system, for buildings, bridges steel inspection is very simple for to use , portable ,measure exact values of residual stress due to welding and the applied loads. After many years of research and tests, and between e discover about elastics behaviour in field of metal steel now is very practice inspection point to point building and bridge constructions. This new system let bridges steel inspection in very simple mode, is portable instrument and let to measure exact values of residual stress due to welding and the applied loads.

    p.i. Ennio Curto

    more info: