[en] The improvement of searching techniques has two aims: a maximum defect detectability and a high ability to classify into relevant and irrelevant or spurious indications. Major contributions for the improvement of the inspection techniques come from various fields. Three of them are shown in this paper: theoretical echodynamic models, data acquisition and processing and alternative techniques. As the examples and results demonstrate, all three possibilities are of great importance for an optimization of inservice inspections. (author)

[en] The concept of in-service inspection (ISI) has developed enormously in Spain over the last years, and now includes a series of activities beyond what is strictly understood as a mere requirement of standards. The enhanced ISI program is one which basically takes into account: simultaneous compliance with several requirements; scope widened to include those components which experience has shown are susceptible to failure; contemplation of aspects related to studies of life extension (PLEX); application of the most suitable inspection and evaluation techniques. 3 figs

No abstract available

[en] The phased array ultrasonic testing method is available for beam steering and focusing, and then the focused beam divergence angle can be narrowed and the sound level can be intensified at the focused region. In the present study, two examples of phased array application which are the linear scanning mode operation and the sector scanning mode operation, were conducted in order to establish the availability of this technique as an actual NDT technique. As the result of the experiments, it was recognized that both types of scanning mode had the capability for defect detection and successful estimation of the defect size. Furthermore, it was well realized that the real time B-scope display without mechanical scanning was effective to reduce the operating time of inspection. (orig.)

[en] This invention concerns a device for positioning a part opposite any tube debouching on a tube plate fitted with evenly distributed tubes. This device is used for positioning a part to be placed in turn in front of all the tubes of the tube bundle of the steam generator of a nuclear power station. This part can be either a guide tube for an inspection appliance or a machining or welding head

No abstract available

[en] This regulation applies to the contents, structure, presentation and elaboration of the check-off list and inspection instructions included therein, summarized in the inspection manual, for a specific stationary nuclear power plant. It applies to all in service inspections of systems and component essential for the safety, as defined in the licencing procedure in accordance with atomic law. (orig./HP)

[en] Assurance of the integrity of the sodium coolant pressure boundaries of the Fast Flux Test Facility systems and components is essential for safe operation. A program has been developed to monitor the integrity of the coolant boundaries and certain plant conditions. Specific equipment and features have been designed into the plant for monitoring. The purpose of SISI is to prevent failures or minimize their consequences through early detection. The program which administers the requirements for monitoring applicable plant conditions whose integrity is necessary to protect public health and safety is known as the Surveillance and In-service Inspection (SISI) Program. The SISI program utilizes a wide range of monitoring techniques to ensure that material degradation or structural deficiencies will not result in the loss of the ability to shut down the reactor, cool the reactor core, or cause the release of radioactive material to the environment

[en] Published in summary form only

[en] This invention relates to an apparatus for the on-site inspection of tubes. It specifically concerns an apparatus for the on-site inspection of steam generator tubes whilst immersed in the primary coolant coming from a nuclear reactor