发明名称 |
METHOD AND APPARATUS FOR ANNULUS SPACER DETECTION AND REPOSITIONING IN NUCLEAR REACTORS |
摘要 |
The present invention provides an apparatus for detecting and/or repositioning annulus spacers used to maintain the position of a pressure tube withm a calandria tube of a nuclear reactor. The method comprises the steps of: vibrationally isolating a section of the pressure tube; vibrating the wall of said pressure tube within said isolated section; detecting vibration of the wall at a minimum of two axial positions within said isolated sections; and detecting the reduction in vibration level of the wall at one or more of said axial positions in comparison to the remaining axial positions. The apparatus comprises a tool head to be inserted into the pressure tube, the tool head comprising a first end and a second and a clamping block m each of said ends. The clamping blocks are used to vibrationally isolate a section of the pressure tube located between said ends. The apparatus also comprises piezo-actuators operable to vibrate said pressure tube; and accelerometers used for measuring vibration of said pressure tube. |
申请公布号 |
CA2698252(C) |
申请公布日期 |
2016.11.08 |
申请号 |
CA20082698252 |
申请日期 |
2008.09.10 |
申请人 |
ATOMIC ENERGY OF CANADA LIMITED |
发明人 |
KING, JAMES M.;SMITH, BRUCE A.W.;FEENSTRA, PAUL |
分类号 |
G21C17/00;F16L7/00;G01V1/00;G21C19/20 |
主分类号 |
G21C17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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