Method and apparatus for an expanding split bushing pipe plug assembly

A method and apparatus for securely fastening a pipe collar or a bracket to a riser pipe (51) of a boiling water reactor (BWR) jet pump assembly (50). A pipe plug assembly (1) includes an angled pipe plug (14) that acts as a wedge to expand a bushing assembly (16) as the pipe plug (14) is drawn into...

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Bibliographische Detailangaben
Hauptverfasser:	SPRAGUE, ROBIN D, LENTNER, BRUCE J
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS PIPES REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A method and apparatus for securely fastening a pipe collar or a bracket to a riser pipe (51) of a boiling water reactor (BWR) jet pump assembly (50). A pipe plug assembly (1) includes an angled pipe plug (14) that acts as a wedge to expand a bushing assembly (16) as the pipe plug (14) is drawn into the overall pipe plug assembly (1). Expansion of the bushing assembly (16) allows a tight tolerance to exist between an outer diameter of the pipe plug (14) and an inner diameter of the collar / bracket and riser pipe (51). Expansion of the bushing assembly (16) allows a straight hole to be match drilled into the collar / bracket and riser pipe (51), thereby avoiding a more complicated tapered hole to be drilled into the collar / bracket and riser pipe (51). An ensuing tight fit between the pipe plug assembly (1), the collar / bracket and the riser pipe (51) mitigates vibration of components and minimizes leakage to acceptable levels for use in the flooded environment of the annulus region where the jet pump assem