| 摘要 |
<p>The process consists in displacing a camera (15), provided with a sensitive support, parallel to the tubular plate (2) of the steam generator inside the water tank (3), successively taking photographs of the primary face (2a) of the tubular plate (2), making from the sensitive support, extracted from the water tank (3), pairs of photographic images of the ends of the tubes (8) flush with the tubular plate (2) with different angles of perspective, orienting the photographic images of the pairs in relation to one another to obtain a stereophotogrammetric view of the end of each of the tubes (8) to be checked, and making measurements and observations on the stereophotogrammetric view. The invention also relates to checking apparatus comprising a camera arrangement movable inside the water tank.</p> |
