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Controle Mesure Systemes Contrôle Mesure Systèmes designs, develops and manufactures nearly 30 years a complete NDT range of products in eddy current and ultrasonic testing methods. 825 views Technical Discussions Martin KUNA Engineering, VUJE Trnava a.s., Slovak Republic, Joined Nov 1998, 1 Martin KUNA Engineering, VUJE Trnava a.s., Slovak Republic, Joined Nov 1998 1 04:54 Jul-10-2002 UT detection of SG tube sheet cracks I need information about the UT technique for detection axial cracks in the tube sheet of horizontal steam generator of NPP WWER 440 type. Material of tube sheet is Cr18N10T. The tube sheet has cylindrical shape with inner diameter 800mm and the wall thickness 135mm. Cracks may start from inner surface or from the holes of tube sheet. Inspection possibilty is only from inner side of tube sheet.    Reply  Translate  Close   Jim Knowles Jim Knowles 05:48 Jul-10-2002 Re: UT detection of SG tube sheet cracks : I need information about the UT technique for detection axial cracks in the tube sheet of horizontal steam generator of NPP WWER 440 type. Material of tube sheet is Cr18N10T. The tube sheet has cylindrical shape with inner diameter 800mm and the wall thickness 135mm. Cracks may start from inner surface or from the holes of tube sheet. Inspection possibilty is only from inner side of tube sheet. . It may be possible to supply special tube to tube sheet scanner for this geometry using conventional ultrasonic equipment. Please provide detail and sizes for consideration.    Reply  Translate  Close   Leif Jeppesen R & D FORCE Technology, Denmark, Joined Nov 1998, 6 Leif Jeppesen R & D FORCE Technology, Denmark, Joined Nov 1998 6 08:22 Jul-11-2002 Re: UT detection of SG tube sheet cracks Dera Sir,, A scanner for WWER steam generator inspection has already been made for the P-scan System 4 and is used by one of our customers. The scanner can be seen at www.p-scan.com under the "Spec. applications scanners" tab. If you provide me with you address I can forward a CD showing the operation of the 5-axis scanner. Regards Leif Jeppesen : I need information about the UT technique for detection axial cracks in the tube sheet of horizontal steam generator of NPP WWER 440 type. Material of tube sheet is Cr18N10T. The tube sheet has cylindrical shape with inner diameter 800mm and the wall thickness 135mm. Cracks may start from inner surface or from the holes of tube sheet. Inspection possibilty is only from inner side of tube sheet. .    Reply  Translate  Close

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