Segmented lance assembly
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United States of America Patent
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Jul 2, 2002
Issued Date -
N/A
app pub date -
Jul 29, 1998
filing date -
Jul 29, 1998
priority date (Note) -
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Abstract
A lance assembly for insertion into a steam generator chamber includes a hinged support for guiding the lance within the chamber which may be stored easily in a smaller space outside the chamber when not in use. One embodiment of the support has left and right side support guides formed from multiple hinged segments that surround the lance when inside the chamber. The hinges are axially offset from one another along a length of the assembly and pivot in opposite directions so that the guide is rigid inside the chamber yet allowing the lance to move therein. In an alternate embodiment, a single guide is used having multiple hinged segments. The hinged segments are locked in place immediately prior to being fed into the chamber. The segments may be folded over each other for storage in a smaller space.
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