Apparatus and method for repairing welded elbow joints in a core spray line

A clamp assembly (20) is disclosed that can be remotely installed to structurally replace the P4a and P4b welds that join a short radius elbow (17) to the core spray horizontal pipe (12) and the vertical downcomer pipe (18) in the core spray line (10) that delivers cooling water to the reactor core...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	JENSEN, GRANT CLARK
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A clamp assembly (20) is disclosed that can be remotely installed to structurally replace the P4a and P4b welds that join a short radius elbow (17) to the core spray horizontal pipe (12) and the vertical downcomer pipe (18) in the core spray line (10) that delivers cooling water to the reactor core region in a boiling water reactor. The clamp assembly (20) includes three subassemblies, a horizontal pipe clamp subassembly (22), an elbow restraint subassembly (24), and a downcomer pipe subassembly (26).