No abstract available

[en] Visual acuity tests for radiographic inspectors should be correlated with the type of tasks encountered in real world radiography. The testing procedures should be capable of assessing differences in day to day performance of a given inspector as well as the performance of one inspector relative to other inspectors. Single line targets with specific parametric values for contrast, width, and blur are recommended to provide a means for testing a radiographic inspector for visual acuity. These targets may be used for periodic tests by the employing organization or for more frequent self testing by the inspector. Statistics from the National Health Survey, procedures recommended by the NAS-NRC Committee on Vision and real world radiographs have been utilized in arriving at recommended test configurations

[en] In the framework of mechanical tests and to answer the different requests for tests, the T.C.R (Transport Conditionnement et Retraitement) laboratory got test facilities. These installations allow to carry out tests of resistance to shocks, mainly at the safety level of components of nuclear power plants, mockups of transport casks for fuel elements and transport containers for radioactive materials. They include a tower and a catapult. This paper give a decription of the facilities and explain their operation way

[en] Development of Nondestructive Tester for industrial application to detect flaws in aluminum die-casted squirrel case rotor is reported in this paper. Electronic currents are supplied to the end-ring and Hall effect sensors are used to detect the variation of currents which flow in the bar of the rotor. Some signal processing techniques are introduced to classify the signals due to the defects in the bars

[en] There are many different mathematical models that can be used to evaluate ah inspection system's Probability of Detection (PoD). Each model has a unique feature, These features can make one model more appropriate than another model. There are more than 12 commonly used PoD models used in NDT and each model has its own unique mathematical form. This article introduces each model and compares them to reveal their unique features. PoD is typically rather heavily explained using mathematics, but understanding the mathematics to a very deep level is not required to generate a good PoD curve. Computers take care of the heavy math. Having an understanding of the differences between model types is essential for creating a PoD that actually represents the inspection situation. This is the main reason behind having a selection of models. (author)

[en] A nondestructive ultrasonic technique is presented for estimating the reinforcement volume fractions of particulate composites. The proposed technique employs a theoretical model which accounts for composite microstructures, together with a measurement of ultrasonic velocity to determine the reinforcement volume fractions. The approach is used for a wide range of SiC particulate reinforced Al matrix (SiC_p/AI) composites. The method is considered to be reliable in determining the reinforcement volume fractions. The technique could be adopted in a production unit for the quality assessment of the metal matrix particulate composite extrusions

[en] Experiences got from the use of NDT in inspection-repairing of boiler AE-101 of fertilizers Plant-Talara is presented after failures by pipes breakage. Applying liquid penetrant testing and visual inspection it was possible to determine the seriousness of the equipment the use of metallographic copies, ultrasonic measurements and hardness gave us an idea of the actual condition of the equipment, allowing a safe performance

[en] Published in summary form only

[en] These proceedings contain 67 communications of which 21 have been analyzed and indexed separately. Methods which are nuclear or applied to the nuclear field (e.g. reactors) are the main part of the subjects covered

[en] A formalism for analyzing the reliability R of an interval for system probability of failure and its confidence C from the component R-C intervals is outlined. In the general formalism one must obtain the network representation of the system with path failure probabilities indicated, derive by an algorithm a representation of the system by disjoint paths, declare an R-reliable interval for each component probability of failure, and derive the confidence in that interval. This formalism is developed with reference to aircraft engine component retirement-for-cause. The network diagram consists of paths for various rotor components. R-C intervals for the path state probabilities and for the system probability failures are calculated. The final solution involves sums and products of a number of integrals which can be quickly evaluated by an integration logorithm