Measures for Tsunami Striking Nuclear Power Station in Japan
Planning and Consideration on SFR R&D Activities in China |
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| Vol.1 No.3 NT13 (Nov., 2009) SheetB |
| Core shroud crack Removing Method by Grinding
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| Hitachi-GE Nuclear Energy, Ltd. |
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Grinding is one of repairing methods in case of finding cracks at inner surface of core shroud. As shown in Fig.2, cracks are mechanically removed by grinding head mounted on access equipments. A view of area machined by grinding is shown in Fig.3. The characteristic of grinding is that machined surface is compressed (approx.400MPa) by underwater machining.
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| Contact |
| Japan Society of Maintenology (ejam@jsm.or.jp) |
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Vol.3 No.3 (Nov-25)
 Vol.3 No.2 (Aug-25) Vol.3 No.1 (May-25) Vol.2 No.4 (Feb-11) | |
| < Other Issues | |
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CBM of Motor-Operated Valves in NPPs |
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Replacement Operation Schedule Management of Main Control Boards |
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Current Status of Tec. Dev. of In-pile Tests for IASCC |
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SCC mitigation method by TiO2 technique |
Contacts
(EJAM): ejam@jsm.or.jp
(JSM): secretariat@jsm.or.jp
HP: http://www.jsm.or.jp
(in English)
(small)-Fig.1_Grinding_equipment_for_inner_surface_of_core_shroud.png)
(small)-Fig.2_Situation_of_grinding_mockup_test.png)
